diff --git a/ChangeLog b/ChangeLog index 801ec5dab..bbc227be4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,6 +1,10 @@ 2007-12-01 Mickael Remond - * doc/guide.tex: Updated Windows compilation instructions. + * doc/Makefile: echo seems to interpret \n and \v under MacOSX + Leopard. I fixed the problem but let me know if it breaks build + chain in other contexts. + + * Doc/guide.tex: Updated Windows compilation instructions. * src/configure.erl: Likewise. * doc/ejabberd.hrl: Preparing ejabberd 2.0.0 beta release. diff --git a/doc/Makefile b/doc/Makefile index 1f7f96147..e0d13bb44 100644 --- a/doc/Makefile +++ b/doc/Makefile @@ -9,8 +9,7 @@ release: @echo "* Do not forget to update the features in introduction.tex (including \new{} and \improved{} tags)." @read -p "press any key to continue" @echo "% ejabberd version (automatically generated)." > version.tex - @echo "\newcommand{\version}{"`cat ../src/ejabberd.hrl | grep VERSION |\ - sed s/-define\(VERSION,\ \"//g | sed s/\"\).//g`"}" >> version.tex + @echo "\\\newcommand{\\\version}{"`cat ../src/ejabberd.hrl | grep VERSION | sed s/-define\(VERSION,\ \"//g | sed s/\"\).//g`"}" >> version.tex html: guide.html dev.html features.html @@ -31,7 +30,7 @@ clean: guide.html: guide.tex hevea -fix -noiso -pedantic guide.tex - + dev.html: dev.tex hevea -fix -noiso -pedantic dev.tex diff --git a/doc/dev.html b/doc/dev.html index e705c7047..6330339a5 100644 --- a/doc/dev.html +++ b/doc/dev.html @@ -1,23 +1,15 @@ - -Ejabberd 2.0.0 beta Developers Guide - - - + + +Ejabberd 2.0.0b1 Developers Guide + + + + - -

+ + + + + -

-

Ejabberd 2.0.0 beta Developers Guide

Alexey Shchepin
- mailto:alexey@sevcom.net
- xmpp:aleksey@jabber.ru

+
+
+ -logo.png + + +
+

Ejabberd 2.0.0b1 Developers Guide

+

Alexey Shchepin
+mailto:alexey@sevcom.net
+xmpp:aleksey@jabber.ru


+
+
+ + logo.png + +
+
+ +
+
I can thoroughly recommend ejabberd for ease of setup – + Kevin Smith, Current maintainer of the Psi project
+ + +

Contents

-
I can thoroughly recommend ejabberd for ease of setup – -Kevin Smith, Current maintainer of the Psi project
-

Contents

Introduction -

ejabberd is a free and open source instant messaging server written in Erlang.

ejabberd is cross-platform, distributed, fault-tolerant, and based on open standards to achieve real-time communication.

ejabberd is designed to be a rock-solid and feature rich XMPP server.

ejabberd is suitable for small deployments, whether they need to be scalable or not, as well as extremely big deployments.

-

1  Key Features

+3.1  Router +

  • 3.2  Local Router +
  • 3.3  Session Manager +
  • 3.4  S2S Manager + +
  • 4  Authentication + +
  • 5  XML Representation +
  • 6  Module xml +
  • 7  Module xml_stream +
  • 8  Modules + + + +Introduction +
    +
    +
    +
    +ejabberd is a free and open source instant messaging server written in Erlang.
    +
    +ejabberd is cross-platform, distributed, fault-tolerant, and based on open standards to achieve real-time communication.
    +
    +ejabberd is designed to be a rock-solid and feature rich XMPP server.
    +
    +ejabberd is suitable for small deployments, whether they need to be scalable or not, as well as extremely big deployments.
    +
    + + +

    1  Key Features

    + -

    ejabberd is: -


    +
    +
  • Open Standards: ejabberd is the first Open Source Jabber server claiming to fully comply to the XMPP standard.
    • -

    2  Additional Features

    +

  • XML-based protocol. +
  • Many protocols supported. + + + +

    2  Additional Features

    + -

    Moreover, ejabberd comes with a wide range of other state-of-the-art features: -

    +
  • Databases -
  • Authentication +
  • Native PostgreSQL support. +
  • Mnesia. +
  • ODBC data storage support. +
  • Microsoft SQL Server support. +
  • Authentication -
  • Others +LDAP and ODBC.
  • External Authentication script. +
  • Internal Authentication. + +
  • Others -
    • -

    3  How it Works

    -

    A Jabber domain is served by one or more ejabberd nodes. These nodes can +

  • Interface with networks such as AIM, ICQ and MSN. +
  • Statistics via Statistics Gathering (XEP-0039). +
  • IPv6 support both for c2s and s2s connections. +
  • Multi-User Chat module with logging.
  • Users Directory based on users vCards. +
  • Publish-Subscribe component. +
  • Support for virtual hosting. +
  • HTTP Polling service. +
  • IRC transport. + + + + + +

    3  How it Works

    + + +A Jabber domain is served by one or more ejabberd nodes. These nodes can be run on different machines that are connected via a network. They all must have the ability to connect to port 4369 of all another nodes, and must have the same magic cookie (see Erlang/OTP documentation, in other words the file ~ejabberd/.erlang.cookie must be the same on all nodes). This is needed because all nodes exchange information about connected users, S2S -connections, registered services, etc…

    Each ejabberd node have following modules: -

    + + +

    3.1  Router

    + +This module is the main router of Jabber packets on each node. It routes them based on their destinations domains. It has two tables: local and global routes. First, domain of packet destination searched in local table, and if it found, then the packet is routed to appropriate process. If no, then it searches in global table, and is routed to the appropriate ejabberd node or process. If it does not exists in either tables, then it sent to the S2S -manager.

    -

    3.2  Local Router

    This module routes packets which have a destination domain equal to this server +manager.
    +
    + + +

    3.2  Local Router

    + +This module routes packets which have a destination domain equal to this server name. If destination JID has a non-empty user part, then it routed to the -session manager, else it is processed depending on it's content.

    -

    3.3  Session Manager

    This module routes packets to local users. It searches for what user resource +session manager, else it is processed depending on it's content.
    +
    + + +

    3.3  Session Manager

    + +This module routes packets to local users. It searches for what user resource packet must be sended via presence table. If this resource is connected to this node, it is routed to C2S process, if it connected via another node, then -the packet is sent to session manager on that node.

    -

    3.4  S2S Manager

    This module routes packets to other Jabber servers. First, it checks if an +the packet is sent to session manager on that node.
    +
    + + +

    3.4  S2S Manager

    + +This module routes packets to other Jabber servers. First, it checks if an open S2S connection from the domain of the packet source to the domain of packet destination already exists. If it is open on another node, then it routes the packet to S2S manager on that node, if it is open on this node, then it is routed to the process that serves this connection, and if a connection -does not exist, then it is opened and registered.

    -

    4  XML Representation

    -

    Each XML stanza is represented as the following tuple: -

    XMLElement = {xmlelement, Name, Attrs, [ElementOrCDATA]}
+does not exist, then it is opened and registered.
    
+
    
+
+
+
    4  Authentication
    
+
+
+
+
    4.0.1  External
    
+
+
+
+The external authentication script follows
+the erlang port driver API.
    
+
    
+That script is supposed to do theses actions, in an infinite loop:
+
    • 
+read from stdin: AABBBBBBBBB.....
+ 
      • 
+ A: 2 bytes of length data (a short in network byte order)
+ 
      • B: a string of length found in A that contains operation in plain text
+ operation are as follows:
+ 
        • 
+ auth:User:Server:Password (check if a username/password pair is correct)
+ 
        • isuser:User:Server (check if it's a valid user)
+ 
        • setpass:User:Server:Password (set user's password)
+ 
        
+ 
      
+
    • write to stdout: AABB
+ 
      • 
+ A: the number 2 (coded as a short, which is bytes length of following result)
+ 
      • B: the result code (coded as a short), should be 1 for success/valid, or 0 for failure/invalid
+ 
      
+
    
+Example python script
+
    +#!/usr/bin/python
+
+import sys
+from struct import *
+
+def from_ejabberd():
+    input_length = sys.stdin.read(2)
+    (size,) = unpack('>h', input_length)
+    return sys.stdin.read(size).split(':')
+
+def to_ejabberd(bool):
+    answer = 0
+    if bool:
+        answer = 1
+    token = pack('>hh', 2, answer)
+    sys.stdout.write(token)
+    sys.stdout.flush()
+
+def auth(username, server, password):
+    return True
+
+def isuser(username, server):
+    return True
+
+def setpass(username, server, password):
+    return True
+
+while True:
+    data = from_ejabberd()
+    success = False
+    if data[0] == "auth":
+        success = auth(data[1], data[2], data[3])
+    elif data[0] == "isuser":
+        success = isuser(data[1], data[2])
+    elif data[0] == "setpass":
+        success = setpass(data[1], data[2], data[3])
+    to_ejabberd(success)
+
    
+
+
+
    5  XML Representation
    
+
+
+Each XML stanza is represented as the following tuple:
+
    +XMLElement = {xmlelement, Name, Attrs, [ElementOrCDATA]}
         Name = string()
         Attrs = [Attr]
         Attr = {Key, Val}
@@ -183,30 +320,45 @@ does not exist, then it is opened and registered.
    
-
    5  Module xml
    
-
    
-
    element_to_string(El) -> string()
-
    El = XMLElement
-
    Returns string representation of XML stanza El.
    crypt(S) -> string()
-
    S = string()
+
    
+
+
+
    6  Module xml
    
+
+
+
    element_to_string(El) -> string()
+
    +El = XMLElement
+
    Returns string representation of XML stanza El.
    
+
    
+
    crypt(S) -> string()
+
    +S = string()
 
    Returns string which correspond to S with encoded XML special
-characters.
    remove_cdata(ECList) -> EList
-
    ECList = [ElementOrCDATA]
+ characters.
    
+
    
+
    remove_cdata(ECList) -> EList
+
    +ECList = [ElementOrCDATA]
 EList = [XMLElement]
-
    EList is a list of all non-CDATA elements of ECList.
    get_path_s(El, Path) -> Res
-
    El = XMLElement
+
    EList is a list of all non-CDATA elements of ECList.
    
+
    
+
    get_path_s(El, Path) -> Res
+
    +El = XMLElement
 Path = [PathItem]
 PathItem = PathElem | PathAttr | PathCDATA
 PathElem = {elem, Name}
@@ -215,56 +367,74 @@ PathCDATA = cdata
 Name = string()
 Res = string() | XMLElement
 
    If Path is empty, then returns El. Else sequentially
-consider elements of Path. Each element is one of:
-
    
-
    {elem, Name} Name is name of subelement of
-El, if such element exists, then this element considered in
-following steps, else returns empty string.
-
    {attr, Name} If El have attribute Name, then
-returns value of this attribute, else returns empty string.
-
    cdata Returns CDATA of El.
-
    TODO:
-
             get_cdata/1, get_tag_cdata/1
+ consider elements of Path. Each element is one of:
+ 
    {elem, Name} Name is name of subelement of
+ El, if such element exists, then this element considered in
+ following steps, else returns empty string.
+ 
    {attr, Name} If El have attribute Name, then
+ returns value of this attribute, else returns empty string.
+ 
    cdata Returns CDATA of El.
+ 

    
+
    
+
    TODO:
+
    +         get_cdata/1, get_tag_cdata/1
          get_attr/2, get_attr_s/2
          get_tag_attr/2, get_tag_attr_s/2
          get_subtag/2
-
    
-
    6  Module xml_stream
    
-
    
-
    parse_element(Str) -> XMLElement | {error, Err}
-
    Str = string()
+
    
+
+
+
    7  Module xml_stream
    
+
+
+
    parse_element(Str) -> XMLElement | {error, Err}
+
    +Str = string()
 Err = term()
 
    Parses Str using XML parser, returns either parsed element or error
-tuple.
-
    
-
    7  Modules
    
-
    
-
    7.1  Module gen_iq_handler
    
-
    The module gen_iq_handler allows to easily write handlers for IQ packets
-of particular XML namespaces that addressed to server or to users bare JIDs.
    In this module the following functions are defined:
-
    
-
    add_iq_handler(Component, Host, NS, Module, Function, Type)
-
    Component = Module = Function = atom()
+ tuple.
+
    
+
+
+
    8  Modules
    
+
+
+
+
+
    8.1  Module gen_iq_handler
    
+
+
+The module gen_iq_handler allows to easily write handlers for IQ packets
+of particular XML namespaces that addressed to server or to users bare JIDs.
    
+
    
+In this module the following functions are defined:
+
    add_iq_handler(Component, Host, NS, Module, Function, Type)
+
    +Component = Module = Function = atom()
 Host = NS = string()
 Type = no_queue | one_queue | parallel
 
    Registers function Module:Function as handler for IQ packets on
-virtual host Host that contain child of namespace NS in
-Component. Queueing discipline is Type. There are at least
-two components defined:
-
    
-
    ejabberd_local Handles packets that addressed to server JID;
-
    ejabberd_sm Handles packets that addressed to users bare JIDs.
-
    
-
    remove_iq_handler(Component, Host, NS)
-
    Component = atom()
+ virtual host Host that contain child of namespace NS in
+ Component. Queueing discipline is Type. There are at least
+ two components defined:
+ 
    ejabberd_local Handles packets that addressed to server JID;
+ 
    ejabberd_sm Handles packets that addressed to users bare JIDs.
+ 
    
+
    remove_iq_handler(Component, Host, NS)
+
    +Component = atom()
 Host = NS = string()
 
    Removes IQ handler on virtual host Host for namespace NS from
-Component.
-
    Handler function must have the following type:
-
    
-
    Module:Function(From, To, IQ)
-
    From = To = jid()
-
    -module(mod_cputime).
+ Component.
+
    
+Handler function must have the following type:
+
    Module:Function(From, To, IQ)
+
    +From = To = jid()
+
    
+
    +-module(mod_cputime).
 
 -behaviour(gen_mod).
 
@@ -298,9 +468,14 @@ process_local_iq(From, To, {iq, ID, Type, XMLNS, SubEl}) ->
                [{"xmlns", ?NS_CPUTIME}],
                [{xmlelement, "cputime", [], [{xmlcdata, SCPUTime}]}]}]}
     end.
-
    
-
    7.2  Services
    
-
    -module(mod_echo).
+
    
+
+
+
    8.2  Services
    
+
+
+
    +-module(mod_echo).
 
 -behaviour(gen_mod).
 
@@ -334,10 +509,10 @@ stop(Host) ->
     Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
     Proc ! stop,
     {wait, Proc}.
-
    
+
    
 
 
 
 
    This document was translated from LATEX by
-HEVEA.
    
+HEVEA.
 
diff --git a/doc/guide.html b/doc/guide.html
index e7c5bf4a4..3c13c72f0 100644
--- a/doc/guide.html
+++ b/doc/guide.html
@@ -1,14 +1,19 @@
 
 
+
 
+
 
  
  
 
- ejabberd 2.0.0 beta 
+
+ejabberd 2.0.0b1 
+
  
- Installation and Operation Guide
+
+Installation and Operation Guide
  
  
 
@@ -30,23 +35,13 @@
  
  
  
-
 
 
 
-
-
+
+
 
 
-
-
-
    
 
-
    
+
    
+
+
+
+
+
+
+
+
    
+
    
+
+
+ 
+
-
    
+
    
 

    
 
    
 
-
-
-
-
     ejabberd 2.0.0 beta 
     
     Installation and Operation Guide

    
+
+
+
+
+
+
+
    ejabberd 2.0.0b1 
     
    Installation and Operation Guide

    
 
    
 
 
    
@@ -108,371 +99,591 @@ SPAN{width:20%; float:right; text-align:left; margin-left:auto;}
 
    
 
    
 
-
    
-
    ejabberd Development Team
    
-
    Contents

    
+
+
+
    Contents
    
+
 
-
  • Chapter 2  Installing ejabberd +Chapter 1  Introduction +
  • Chapter 2  Installing ejabberd -
  • 2.5  Creating an Initial Administrator -
    • -
  • Chapter 3  Configuring ejabberd +2.1  Installing ejabberd with Graphical Installer +
  • 2.2  Installing ejabberd with Operating System specific packages +
  • 2.3  Installing ejabberd with CEAN +
  • 2.4  Installing ejabberd from Source Code +
  • 2.5  Creating an Initial Administrator + +
  • Chapter 3  Configuring ejabberd -
  • 3.2  Database and LDAP Configuration +3.1  Basic Configuration -
  • 3.3  Modules Configuration +3.1.1  Host Names +
  • 3.1.2  Virtual Hosting +
  • 3.1.3  Listened Sockets +
  • 3.1.4  Authentication +
  • 3.1.5  Access Rules +
  • 3.1.6  Shapers +
  • 3.1.7  Default Language + +
  • 3.2  Database and LDAP Configuration -
    • -
  • Chapter 4  Managing an ejabberd server +3.2.1  MySQL +
  • 3.2.2  Microsoft SQL Server +
  • 3.2.3  PostgreSQL +
  • 3.2.4  ODBC Compatible +
  • 3.2.5  LDAP + +
  • 3.3  Modules Configuration + +
  • Chapter 4  Managing an ejabberd server -
    • -
  • Chapter 5  Securing ejabberd +4.1  Online Configuration and Monitoring -
  • Chapter 6  Integrating ejabberd with other Instant Messaging servers +4.1.1  Web Interface +
  • 4.1.2  ejabberdctl + + +
  • Chapter 5  Securing ejabberd -
  • Chapter 7  Clustering +5.1  Firewall Settings + +
  • Chapter 6  Integrating ejabberd with other Instant Messaging servers +
  • Chapter 7  Clustering -
  • 7.2  Clustering Setup -
  • 7.3  Service Load-Balancing +7.1  How it Works -
    • -
  • Chapter 8  Debugging +7.1.1  Router +
  • 7.1.2  Local Router +
  • 7.1.3  Session Manager +
  • 7.1.4  s2s Manager + +
  • 7.2  Clustering Setup +
  • 7.3  Service Load-Balancing -
  • Appendix A  Internationalization and Localization -
  • Appendix B  Release Notes -
  • Appendix C  Acknowledgements -
  • Appendix D  Copyright Information -
    • -

    Chapter 1  Introduction

    -

    ejabberd is a free and open source instant messaging server written in Erlang.

    ejabberd is cross-platform, distributed, fault-tolerant, and based on open standards to achieve real-time communication.

    ejabberd is designed to be a rock-solid and feature rich XMPP server.

    ejabberd is suitable for small deployments, whether they need to be scalable or not, as well as extremely big deployments.

    -

    1.1  Key Features

    +7.3.1  Components Load-Balancing +

  • 7.3.2  Domain Load-Balancing Algorithm +
  • 7.3.3  Load-Balancing Buckets + + +
  • Chapter 8  Debugging + +
  • Appendix A  Internationalization and Localization +
  • Appendix B  Release Notes +
  • Appendix C  Acknowledgements +
  • Appendix D  Copyright Information + + + + +

    Chapter 1  Introduction

    + + + +ejabberd is a free and open source instant messaging server written in Erlang.
    +
    +ejabberd is cross-platform, distributed, fault-tolerant, and based on open standards to achieve real-time communication.
    +
    +ejabberd is designed to be a rock-solid and feature rich XMPP server.
    +
    +ejabberd is suitable for small deployments, whether they need to be scalable or not, as well as extremely big deployments.
    +
    + + +

    1.1  Key Features

    + -

    ejabberd is: -


    +
    +
  • Open Standards: ejabberd is the first Open Source Jabber server claiming to fully comply to the XMPP standard.
    • -

    1.2  Additional Features

    +

  • XML-based protocol. +
  • Many protocols supported. + + + +

    1.2  Additional Features

    + -

    Moreover, ejabberd comes with a wide range of other state-of-the-art features: -

    +
  • Databases -
  • Authentication +
  • Native PostgreSQL support. +
  • Mnesia. +
  • ODBC data storage support. +
  • Microsoft SQL Server support. +
  • Authentication -
  • Others +LDAP and ODBC.
  • External Authentication script. +
  • Internal Authentication. + +
  • Others -
    • -

    Chapter 2  Installing ejabberd

    -

    2.1  Installing ejabberd with Graphical Installer

    The easiest approach to install an ejabberd Instant Messaging server +

  • Interface with networks such as AIM, ICQ and MSN. +
  • Statistics via Statistics Gathering (XEP-0039). +
  • IPv6 support both for c2s and s2s connections. +
  • Multi-User Chat module with logging.
  • Users Directory based on users vCards. +
  • Publish-Subscribe component. +
  • Support for virtual hosting. +
  • HTTP Polling service. +
  • IRC transport. + + + + + +

    Chapter 2  Installing ejabberd

    + + + +

    2.1  Installing ejabberd with Graphical Installer

    + +The easiest approach to install an ejabberd Instant Messaging server is to use the graphical installer. The installer is available in ejabberd Process-one -downloads page.

    The installer will deploy and configure a full featured ejabberd -server and does not require any extra dependancies.

    -

    2.2  Installing ejabberd with Operating System specific packages

    Some Operating Systems provide a specific ejabberd package adapted to +downloads page.
    +
    +The installer will deploy and configure a full featured ejabberd +server and does not require any extra dependencies.
    +
    + + +

    2.2  Installing ejabberd with Operating System specific packages

    + +Some Operating Systems provide a specific ejabberd package adapted to your system architecture and libraries, which also checks dependencies and performs basic configuration tasks like creating the initial administrator account. Some examples are Debian and Gentoo. Consult the -resources provided by your Operating System for more information.

    -

    2.3  Installing ejabberd with CEAN

    CEAN +resources provided by your Operating System for more information.
    +
    + + +

    2.3  Installing ejabberd with CEAN

    + +CEAN (Comprehensive Erlang Archive Network) is a repository that hosts binary packages from many Erlang programs, including ejabberd and all its dependencies. The binaries are available for many different system architectures, so this is an -alternative to the binary installer and Operating System's ejabberd packages.

    -

    2.4  Installation from Source

    - -

    -

    2.4.1  Installation Requirements

    +alternative to the binary installer and Operating System's ejabberd packages.
    +
    + + +

    2.4  Installing ejabberd from Source Code

    + + + + + +

    2.4.1  Requirements

    + -

    -

    `Unix-like' operating systems

    -

    To compile ejabberd on a `Unix-like' operating system, you need: -

    + + +

    2.4.2  Download Source Sode

    + + + +Released versions of ejabberd can be obtained from
    +http://www.process-one.net/en/ejabberd/downloads
    +
    + +The latest development version can be retrieved from the Subversion repository using this command: +
    +  svn co http://svn.process-one.net/ejabberd/trunk ejabberd
+
    + + +

    2.4.3  Compile

    + -

    -

    `Unix-like' operating systems

    -

    Compile ejabberd on a `Unix-like' operating system by executing:

      ./configure
+
+To compile ejabberd execute the commands:
+
    +  ./configure
   make
-  su
+
    The compilation process may report several warnings related to unusued variables.
+This is common, and is not a problem.
    
+
    
+The build configuration script provides several parameters.
+To get the full list run the command:
+
    +  ./configure --help
+
    
+Some options that you may be interested in modifying:
+
    
+	–prefix=/
     
+	Specify the path prefix where the files will be copied when running the make install command.
    
+
    
+	
    –enable-pam
     
+	Enable the PAM authentication method.
    
+
    
+	
    –enable-odbc or –enable-mssql
    
+	Required if you want to use an external database.
+	See section 3.2 for more information.
    
+
    
+	
    –enable-full-xml
     
+	Enable the use of XML based optimisations.
+	It will for example use CDATA to escape characters in the XMPP stream. 
+	Use this option only if you are sure your Jabber clients include a fully compliant XML parser.
    
+
    
+	
    –disable-transient-supervisors
    
+	Disable the use of Erlang/OTP supervision for transient processes. 
+
    
+
+
+
    2.4.4  Install
    
+
+
+
+To install ejabberd in the destination directories, run the command:
+
       make install
-
    These commands will:
-
    • 
-install ejabberd into the directory /var/lib/ejabberd,
-
    • install the configuration file into /etc/ejabberd,
-
    • create a directory called /var/log/ejabberd to store log files.
-
    
-
    Build options
    If you want to enable the use of XML based optimisations, you can use
-the option –enable-full-xml when running the configure
-command. It will for example use CDATA to escape characters in the
-XMPP stream. Do not use this option if all your clients are not using
-a fully compliant XML parser.
    In some case, you might want to disable the use of Erlang OTP supervision for transient processes. In this case, you can configure ejabberd with the option –disable-transient-supervisors.
    If you want to use an external database, you need to execute the configure
-script with the option(s) –enable-odbc or –enable-odbc
-–enable-mssql. See section 3.2 for more information.
    
-
    Windows
    
-
    • 
-Install Erlang emulator (for example, into C:\Program Files\erl5.3).
-
    • Install Expat library into C:\Program Files\Expat-1.95.7
-directory.
      Copy file C:\Program Files\Expat-1.95.7\Libs\libexpat.dll
-to your Windows system directory (for example, C:\WINNT or
-C:\WINNT\System32)
-
    • Build and install the Iconv library into the directory
-C:\Program Files\iconv-1.9.1.
      Copy file C:\Program Files\iconv-1.9.1\bin\iconv.dll to your
-Windows system directory (more installation instructions can be found in the
-file README.woe32 in the iconv distribution).
      Note: instead of copying libexpat.dll and iconv.dll to the Windows
-directory, you can add the directories
-C:\Program Files\Expat-1.95.7\Libs and
-C:\Program Files\iconv-1.9.1\bin to the PATH environment
-variable.
-
    • While in the directory ejabberd\src run:
-
      configure.bat
-nmake -f Makefile.win32
-
    • Edit the file ejabberd\src\ejabberd.cfg and run
-
      werl -s ejabberd -name ejabberd
-
    
-
    2.4.4  Starting
    
+
    Note that you may need to have administrative privileges in the system.
    +
    +The files and directories created are, by default: +
    + /etc/ejabberd/
    Configuration files: +
    + ejabberd.cfg
    ejabberd configuration file +
    ejabberd.inetrc
    Network DNS configuration +
    ejabberdctl.cfg
    Configuration file of the administration script +
    +
    /sbin/ejabberdctl
    Administration script +
    /var/lib/ejabberd/
    +
    + .erlang.cookie
    Erlang cookie file +
    db
    Database spool files +
    ebin
    Binary Erlang files (*.beam) +
    priv
    +
    + lib
    Binary system libraries (*.so) +
    msgs
    Translated strings (*.msgs) +
    +
    +
    /var/log/ejabberd/
    Log files: +
    + ejabberd.log
    Messages reported by ejabberd code +
    sasl.log
    Messages reported by Erlang/OTP +
    +
    + + +

    2.4.5  Start

    + -

    Execute the following command to start ejabberd: -

      erl -pa /var/lib/ejabberd/ebin -name ejabberd -s ejabberd
-

    or -

      erl -pa /var/lib/ejabberd/ebin -sname ejabberd -s ejabberd
-

    In the latter case the Erlang node will be identified using only the first part -of the host name, i. e. other Erlang nodes outside this domain cannot contact -this node.

    Note that when using the above command, ejabberd will search for the -configuration file in the current directory and will use the current directory -for storing its user database and for logging.

    To specify the path to the configuration file, the log files and the Mnesia -database directory, you may use the following command: -

      erl -pa /var/lib/ejabberd/ebin \
-      -sname ejabberd \
-      -s ejabberd \
-      -ejabberd config \"/etc/ejabberd/ejabberd.cfg\" \
-                log_path \"/var/log/ejabberd/ejabberd.log\" \
-      -sasl sasl_error_logger \{file,\"/var/log/ejabberd/sasl.log\"\} \
-      -mnesia dir \"/var/lib/ejabberd/spool\"
-

    You can find other useful options in the Erlang manual page -(erl -man erl).

    To use more than 1024 connections, you should set the environment variable -ERL_MAX_PORTS: -

      export ERL_MAX_PORTS=32000
-

    Note that with this value, ejabberd will use more memory (approximately 6 MB -more).

    To reduce memory usage, you may set the environment variable -ERL_FULLSWEEP_AFTER: -

      export ERL_FULLSWEEP_AFTER=0
-

    But in this case ejabberd can start to work slower.

    -

    2.5  Creating an Initial Administrator

    -

    Before the web interface can be entered to perform administration tasks, an -account with administrator rights is needed on your ejabberd deployment.

    Instructions to create an initial administrator account: -

    1. -Register an account on your ejabberd deployment. An account can be -created in two ways: -
      1. -Using the tool ejabberdctl (see -section 4.1.2): -
        % ejabberdctl node@host register admin example.org password
-
      2. Using In-Band Registration (see section 3.3.15): you can -use a Jabber client to register an account. -
      -
    2. Edit the configuration file to promote the account created in the previous -step to an account with administrator rights. Note that if you want to add -more administrators, a seperate acl entry is needed for each administrator. -
        {acl, admins, {user, "admin", "example.org"}}.
+You can use the ejabberdctl command line administration script to start and stop ejabberd.
+Please refer to the section 4.1.2 for details about ejabberdctl.
      
+
      
+The command line parameters used by the ejabberdctl administration script 
+when starting the Erlang/OTP virtual machine are:
+
      
+ -pa /var/lib/ejabberd/ebin
       
+	Specify the directory where Erlang binary files (*.beam) are located.
+ 
      -sname ejabberd
       
+	The Erlang node will be identified using only the first part
+	of the host name, i. e. other Erlang nodes outside this domain cannot contact
+	this node. This is the preferable option in most cases.
+ 
      -name ejabberd
       
+	The Erlang node will be fully identified.
+ This is only useful if you plan to setup an ejabberd cluster with nodes in different networks.
+ 
      -s ejabberd
       
+	This paramaters tells the Erlang machine to start the ejabberd application
+ 
      -mnesia dir "/var/lib/ejabberd/spool"
      
+	Specify the Mnesia database directory.
+ 
      -ejabberd config "/etc/ejabberd/ejabberd.cfg"
       
+	Specify the ejabberd configuration file.
+ 
      -ejabberd log_path "/var/log/ejabberd/ejabberd.log"
       
+	Specify the directory for the ejabberd.log file.
+ 
      -sasl sasl_error_logger {file, "/var/log/ejabberd/sasl.log"}
      
+	Specify the directory for the sasl.log file.
+ 
      -env ERL_MAX_PORTS=32000
      
+	Allow up to 32000 connections. The default limit is just 1024.
+	With this value, ejabberd will use more memory (approximately 6 MB more).
+ 
      -env ERL_FULLSWEEP_AFTER=0
      
+	May reduce memory usage, but ejabberd may consume more processor.
+
      
+Note that some characters need to be escaped when used in shell scripts, for instance " and {}.
      
+
      
+You can find other options in the Erlang manual page (erl -man erl).
      
+
      
+
+
+
      2.4.6  Specific Notes for BSD
      
+
+
+
+The command to compile ejabberd in BSD systems is:
+
      +  gmake
+
      
+
+
+
      2.4.7  Specific Notes for Microsoft Windows
      
+
+
+
+
+
+
      Requirements
      
+
+
+To compile ejabberd on a Microsoft Windows system, you need:
+
+
+
+
      Compilation
      
+
+
+We assume that we will try to put as much library as possible into C:\sdk\ to make it easier to track what is install for ejabberd.
+
      1. 
+Install Erlang emulator (for example, into C:\sdk\erl5.5.5).
+
      2. Install Expat library into C:\sdk\Expat-2.0.0
+ directory.
        
+
        
+Copy file C:\sdk\Expat-2.0.0\Libs\libexpat.dll
+ to your Windows system directory (for example, C:\WINNT or
+ C:\WINNT\System32)
+
      3. Build and install the Iconv library into the directory
+ C:\sdk\GnuWin32.
        
+
        
+Copy file C:\sdk\GnuWin32\bin\lib*.dll to your
+ Windows system directory (more installation instructions can be found in the
+ file README.woe32 in the iconv distribution).
        
+
        
+Note: instead of copying libexpat.dll and iconv.dll to the Windows
+ directory, you can add the directories
+ C:\sdk\Expat-2.0.0\Libs and
+ C:\sdk\GnuWin32\bin to the PATH environment
+ variable.
+
      4. Install OpenSSL in C:\sdk\OpenSSL and add C:\sdk\OpenSSL\lib\VC to your path or copy the binaries to your system directory.
+
      5. Install ZLib in C:\sdk\gnuWin32. Copy 
+ C:\sdk\GnuWin32\bin\zlib1.dll to your system directory. If you change your path it should already be set after libiconv install. 
+
      6. Make sure the you can access Erlang binaries from your path. For example: set PATH=%PATH%;"C:\sdk\erl5.5.5\bin"
+
      7. Depending on how you end up actually installing the library you might need to check and tweak the paths in the file configure.erl.
+
      8. While in the directory ejabberd\src run:
+
        +configure.bat
+nmake -f Makefile.win32
+
      9. Edit the file ejabberd\src\ejabberd.cfg and run
+
        +werl -s ejabberd -name ejabberd
+
      
+
+
+
      2.5  Creating an Initial Administrator
      
+
+
+Before the web interface can be entered to perform administration tasks, an
+account with administrator rights is needed on your ejabberd deployment.
      
+
      
+Instructions to create an initial administrator account:
+
      1. 
+Register a Jabber account on your ejabberd server. An account can be
+ created in two ways:
+ 
        1. 
+ Using the tool ejabberdctl (see
+ section 4.1.2):
+ 
          +% ejabberdctl node@host register admin example.org password
+
        2. Using In-Band Registration (see section 3.3.15): you can
+ use a Jabber client to register an account.
+ 
        
+
      2. Edit the configuration file to promote the account created in the previous
+ step to an account with administrator rights. Note that if you want to add
+ more administrators, a separate ACL entry is needed for each administrator.
+ 
        +  {acl, admins, {user, "admin", "example.org"}}.
   {access, configure, [{allow, admins}]}.
-
      3. Restart ejabberd to load the new configuration.
-
      4. Open the web interface (http://server:port/admin/) in your
-favourite browser. Make sure to enter the full JID as username (in this
-example: admin@example.org. The reason that you also need to enter the
-suffix, is because ejabberd's virtual hosting support.
-
      
-
      Chapter 3  Configuring ejabberd
      
-
      3.1  Basic Configuration
      
+
    3. Restart ejabberd to load the new configuration. +
    4. Open the web interface (http://server:port/admin/) in your + favourite browser. Make sure to enter the full JID as username (in this + example: admin@example.org. The reason that you also need to enter the + suffix, is because ejabberd's virtual hosting support. +
    + + +

    Chapter 3  Configuring ejabberd

    + + + +

    3.1  Basic Configuration

    + -

    The configuration file will be loaded the first time you start ejabberd. The -content from this file will be parsed and stored in a database. Subsequently the + +The configuration file will be loaded the first time you start ejabberd. The +content from this file will be parsed and stored in the internal ejabberd database. Subsequently the configuration will be loaded from the database and any commands in the -configuration file are appended to the entries in the database. The -configuration file contains a sequence of Erlang terms. Lines beginning with a +configuration file are appended to the entries in the database.
    +
    +Note that ejabberd never edits the configuration file. +So, the configuration changes done using the web interface +are stored in the database, but are not reflected in the configuration file. +If you want those changes to be use after ejabberd restart, you can either +edit the configuration file, or remove all its content.
    +
    +The configuration file contains a sequence of Erlang terms. Lines beginning with a `%' sign are ignored. Each term is a tuple of which the first element is the name of an option, and any further elements are that option's values. If the configuration file do not contain for instance the `hosts' option, the old -host name(s) stored in the database will be used.

    You can override the old values stored in the database by adding next lines to +host name(s) stored in the database will be used.
    +
    +You can override the old values stored in the database by adding next lines to the configuration file: -

      override_global.
+
    +  override_global.
   override_local.
   override_acls.
-
    With these lines the old global options (shared between all ejabberd nodes in a
+
    With these lines the old global options (shared between all ejabberd nodes in a cluster), local options (which are specific for this particular ejabberd node) -and ACLs will be removed before new ones are added.

    -

    3.1.1  Host Names

    +and ACLs will be removed before new ones are added.
    +
    + + +

    3.1.1  Host Names

    + -

    The option hosts defines a list containing one or more domains that -ejabberd will serve.

    Examples: -

    + + +

    3.1.2  Virtual Hosting

    + -

    Options can be defined separately for every virtual host using the + +Options can be defined separately for every virtual host using the host_config option. It has the following syntax: -

      {host_config, <hostname>, [<option>, <option>, ...]}.
-

    Examples: -

    +If you have several virtual hosts, and you want to define options such as modules with values specific for some virtual host, instead of defining each option with the syntax -

      {<option-name>, <option-value>}
-

    you must use this syntax: -

      {{add, <option-name>}, <option-value>}
-

    Example: -

    + + +

    3.1.3  Listened Sockets

    + -

    The option listen defines for which addresses and ports ejabberd + +The option listen defines for which addresses and ports ejabberd will listen and what services will be run on them. Each element of the list is a tuple with the following elements: -

    - - - - - - - - -
    ejabberd_c2sDescriptionHandles c2s connections.
     Optionsaccess, certfile, inet6, -ip, max_stanza_size, shaper, ssl, -tls, starttls, starttls_required, -zlib
    ejabberd_s2s_inDescriptionHandles incoming s2s -connections.
     Optionsinet6, ip, -max_stanza_size
    ejabberd_serviceDescriptionInteracts with external -components (*).
     Optionsaccess, hosts, inet6, -ip, shaper
    ejabberd_httpDescriptionHandles incoming HTTP -connections.
     Optionscertfile, http_poll, -inet6, ip, tls, web_admin
    -

    (*) The mechanism for external components is defined in Jabber Component Protocol (XEP-0114).

    The following options are available: -

    -{access, <access rule>}
    This option defines -access to the port. The default value is all. -
    {certfile, Path}
    Path to a file containing the SSL certificate. -
    {hosts, [Hostnames], [HostOptions]}
    This option -defines one or more hostnames of connected services and enables you to -specify additional options including {password, Secret}. -
    http_poll
    -This option enables HTTP Polling (XEP-0025) support. HTTP Polling -enables access via HTTP requests to ejabberd from behind firewalls which -do not allow outgoing sockets on port 5222.

    If HTTP Polling is enabled, it will be available at -http://server:port/http-poll/. Be aware that support for HTTP Polling -is also needed in the Jabber client. Remark also that HTTP Polling can be -interesting to host a web-based Jabber client such as -JWChat (there is a tutorial to -install JWChat with -instructions for ejabberd). -

    inet6
    Set up the socket for IPv6. -
    {ip, IPAddress}
    This option specifies which network -interface to listen for. For example {ip, {192, 168, 1, 1}}. -
    {max_stanza_size, Size}
    -This option specifies an -approximate maximum size in bytes of XML stanzas. Approximate, -because it is calculated with the precision of one block of readed -data. For example {max_stanza_size, 65536}. The default -value is infinity. Recommanded values are 65536 for c2s -connections and 131072 for s2s connections. s2s max stanza size -must always much higher than c2s limit. Change this value with -extreme care as it can cause unwanted disconnect if set too low. -
    {shaper, <access rule>}
    This option defines a -shaper for the port (see section 3.1.6). The default value -is none. -
    ssl
    This option specifies that traffic on -the port will be encrypted using SSL. You should also set the -certfile option. It is recommended to use the tls option -instead. -
    starttls
    This option -specifies that STARTTLS encryption is available on connections to the port. -You should also set the certfile option. -
    starttls_required
    This option -specifies that STARTTLS encryption is required on connections to the port. -No unencrypted connections will be allowed. You should also set the -certfile option. -
    tls
    This option specifies that traffic on -the port will be encrypted using SSL immediately after connecting. You -should also set the certfile option. -
    zlib
    This -option specifies that Zlib stream compression (as defined in XEP-0138) -is available on connections to the port. Client connections cannot use -stream compression and stream encryption simultaneously. Hence, if you -specify both tls (or ssl) and zlib, the latter -option will not affect connections (there will be no stream compression). -
    web_admin
    This option -enables the web interface for ejabberd administration which is available -at http://server:port/admin/. Login and password are the username and -password of one of the registered users who are granted access by the -`configure' access rule. -
    component_check_from
    -This option can be used with ejabberd_service only. It is -used to disable control on the from field on packets send by an -external components. The option can be either true or -false. The default value is true which conforms to XEP-0114. -

    In addition, the following options are available for s2s connections: -

    -{s2s_use_starttls, true|false}
    -This option defines whether to -use STARTTLS for s2s connections. -
    {s2s_certfile, Path}
    Path to a -file containing a SSL certificate. -
    {domain_certfile, Domain, Path}
    Path -to the file containing the SSL certificate for the specified domain. -

    For instance, the following configuration defines that: -

    +
    +  {acl, blocked, {user, "bad"}}.
   {access, c2s, [{deny, blocked},
                  {allow, all}]}.
   {shaper, normal, {maxrate, 1000}}.
@@ -695,11 +1002,12 @@ connected to port 5237 with password `ggsecret'.
                               {service_check_from, false}]}
    ]
   }.
-  {S2s_use_starttls, true}.
+  {s2s_use_starttls, true}.
   {s2s_certfile, "/path/to/ssl.pem"}.
-

    Note, that for jabberd 1.4- or WPJabber-based +Note, that for jabberd 1.4- or WPJabber-based services you have to make the transports log and do XDB by themselves: -

      <!--
+
    +  <!--
      You have to add elogger and rlogger entries here when using ejabberd.
      In this case the transport will do the logging.
   -->
@@ -727,461 +1035,746 @@ services you have to make the transports log and do XDB by themselves:
       <spool><jabberd:cmdline flag='s'>/var/spool/jabber</jabberd:cmdline></spool>
     </xdb_file>
   </xdb>
-
    
-
    3.1.4  Authentication
    
+
    + + +

    3.1.4  Authentication

    + -

    The option auth_method defines the authentication method that is used + +The option auth_method defines the authentication method that is used for user authentication: -

      {auth_method, [<method>]}.
-

    The following authentication methods are supported by ejabberd: -

    -

    Internal

    +

    +  {auth_method, [<method>]}.
+
    +The following authentication methods are supported by ejabberd: + + + +

    Internal

    + -

    ejabberd uses its internal Mnesia database as the default authentication method.

    + + +

    SASL Anonymous and Anonymous Login

    + -

    The anonymous authentication method can be configured with the following + +The anonymous authentication method can be configured with the following options. Remember that you can use the host_config option to set virtual -host specific options (see section 3.1.2). Note that there also +host specific options (see section 3.1.2). Note that there also is a detailed tutorial regarding SASL -Anonymous and anonymous login configuration.

    + + +

    PAM Authentication

    + + + +ejabberd supports authentication via Pluggable Authentication Modules (PAM). +PAM is currently supported in AIX, FreeBSD, HP-UX, Linux, Mac OS X, NetBSD and Solaris. +PAM authentication is disabled by default, so you have to configure and compile +ejabberd with PAM support enabled: +
    +./configure --enable-pam && make install
+
    +Options: +
    +pam_service
    This option defines the PAM service name. +Default is "ejabberd". Refer to the PAM documentation of your operation system +for more information. +
    +Example: +
    +  {auth_method, [pam]}.
+  {pam_service, "ejabberd"}.
+
    +Though it is quite easy to set up PAM support in ejabberd, PAM itself introduces some +security issues: + + + +

    3.1.5  Access Rules

    + -

    -

    ACL Definition

    + + + +

    ACL Definition

    + -

    Access control in ejabberd is performed via Access Control Lists (ACLs). The + +Access control in ejabberd is performed via Access Control Lists (ACLs). The declarations of ACLs in the configuration file have the following syntax: -

      {acl, <aclname>, {<acltype>, ...}}.
-

    <acltype> can be one of the following: -

    -all
    Matches all JIDs. Example: -
    {acl, all, all}.
-
    {user, <username>}
    Matches the user with the name -<username> at the first virtual host. Example: -
    {acl, admin, {user, "yozhik"}}.
-
    {user, <username>, <server>}
    Matches the user with the JID -<username>@<server> and any resource. Example: -
    {acl, admin, {user, "yozhik", "example.org"}}.
-
    {server, <server>}
    Matches any JID from server -<server>. Example: -
    {acl, exampleorg, {server, "example.org"}}.
-
    {user_regexp, <regexp>}
    Matches any local user with a name that -matches <regexp> on local virtual hosts. Example: -
    {acl, tests, {user_regexp, "^test[0-9]*$"}}.
-
    {user_regexp, <regexp>, <server>}
    Matches any user with a name -that matches <regexp> at server <server>. Example: -
    {acl, tests, {user_regexp, "^test", "example.org"}}.
-
    {server_regexp, <regexp>}
    Matches any JID from the server that -matches <regexp>. Example: -
    {acl, icq, {server_regexp, "^icq\\."}}.
-
    {node_regexp, <user_regexp>, <server_regexp>}
    Matches any user -with a name that matches <user_regexp> at any server that matches -<server_regexp>. Example: -
    {acl, yohzik, {node_regexp, "^yohzik$", "^example.(com|org)$"}}.
-
    {user_glob, <glob>}
    -
    {user_glob, <glob>, <server>}
    -
    {server_glob, <glob>}
    -
    {node_glob, <user_glob>, <server_glob>}
    This is the same as -above. However, it uses shell glob patterns instead of regexp. These patterns -can have the following special characters: -
    -*
    matches any string including the null string. -
    ?
    matches any single character. -
    [...]
    matches any of the enclosed characters. Character -ranges are specified by a pair of characters separated by a `-'. -If the first character after `[' is a `!', any -character not enclosed is matched. -
    -

    The following ACLs are pre-defined: -

    -all
    Matches any JID. -
    none
    Matches no JID. -
    -

    Access Rights

    +

    +  {acl, <aclname>, {<acltype>, ...}}.
+
    <acltype> can be one of the following: +
    +all
    Matches all JIDs. Example: +
    +{acl, all, all}.
+
    {user, <username>}
    Matches the user with the name + <username> at the first virtual host. Example: +
    +{acl, admin, {user, "yozhik"}}.
+
    {user, <username>, <server>}
    Matches the user with the JID + <username>@<server> and any resource. Example: +
    +{acl, admin, {user, "yozhik", "example.org"}}.
+
    {server, <server>}
    Matches any JID from server + <server>. Example: +
    +{acl, exampleorg, {server, "example.org"}}.
+
    {user_regexp, <regexp>}
    Matches any local user with a name that + matches <regexp> on local virtual hosts. Example: +
    +{acl, tests, {user_regexp, "^test[0-9]*$"}}.
+
    {user_regexp, <regexp>, <server>}
    Matches any user with a name + that matches <regexp> at server <server>. Example: +
    +{acl, tests, {user_regexp, "^test", "example.org"}}.
+
    {server_regexp, <regexp>}
    Matches any JID from the server that + matches <regexp>. Example: +
    +{acl, icq, {server_regexp, "^icq\\."}}.
+
    {node_regexp, <user_regexp>, <server_regexp>}
    Matches any user + with a name that matches <user_regexp> at any server that matches + <server_regexp>. Example: +
    +{acl, yohzik, {node_regexp, "^yohzik$", "^example.(com|org)$"}}.
+
    {user_glob, <glob>}
    +
    {user_glob, <glob>, <server>}
    +
    {server_glob, <glob>}
    +
    {node_glob, <user_glob>, <server_glob>}
    This is the same as + above. However, it uses shell glob patterns instead of regexp. These patterns + can have the following special characters: +
    + *
    matches any string including the null string. +
    ?
    matches any single character. +
    [...]
    matches any of the enclosed characters. Character + ranges are specified by a pair of characters separated by a `-'. + If the first character after `[' is a `!', any + character not enclosed is matched. +
    +
    +The following ACLs are pre-defined: +
    +all
    Matches any JID. +
    none
    Matches no JID. +
    + + +

    Access Rights

    + -

    An entry allowing or denying access to different services looks similar to + +An entry allowing or denying access to different services looks similar to this: -

      {access, <accessname>, [{allow, <aclname>},
+
    +  {access, <accessname>, [{allow, <aclname>},
                           {deny, <aclname>},
                           ...
                          ]}.
-
    When a JID is checked to have access to <accessname>, the server
-sequentially checks if that JID mathes any of the ACLs that are named in the
+
    When a JID is checked to have access to <accessname>, the server +sequentially checks if that JID matches any of the ACLs that are named in the second elements of the tuples in the list. If it matches, the first element of the first matched tuple is returned, otherwise the value `deny' is -returned.

    Example: -

      {access, configure, [{allow, admin}]}.
+returned.
    
+
    
+Example:
+
    +  {access, configure, [{allow, admin}]}.
   {access, something, [{deny, badmans},
                        {allow, all}]}.
-
    The following access rules are pre-defined:
-
    
-all
     Always returns the value `allow'.
-
    none
     Always returns the value `deny'.
-
    
-
    Limiting Opened Sessions with ACL
    
+
    +The following access rules are pre-defined: +
    +all
    Always returns the value `allow'. +
    none
    Always returns the value `deny'. +
    + + +

    Limiting Opened Sessions with ACL

    + -

    The special access max_user_sesssions specifies the maximum + +The special access max_user_sessions specifies the maximum number of sessions (authenticated connections) per user. If a user tries to open more sessions by using different resources, the first opened session will be disconnected. The error session replaced will be sent to the disconnected session. The value for this option can be either a number, or infinity. The default value is -infinity.

    The syntax is: -

      {access, max_user_sessions, [{<maxnumber>, <aclname>},
+infinity.
    
+
    
+The syntax is:
+
    +  {access, max_user_sessions, [{<maxnumber>, <aclname>},
                                ...
                               ]}.
-
    Examples:
-
    • 
+
    +Examples: + -

    3.1.6  Shapers

    +

    +  {access, max_user_sessions, [{10, all}]}.
+
    + + +

    3.1.6  Shapers

    + -

    Shapers enable you to limit connection traffic. The syntax of + +Shapers enable you to limit connection traffic. The syntax of shapers is like this: -

      {shaper, <shapername>, <kind>}.
-

    Currently only one kind of shaper called maxrate is available. It has the +

    +  {shaper, <shapername>, <kind>}.
+
    Currently only one kind of shaper called maxrate is available. It has the following syntax: -

      {maxrate, <rate>}
-

    where <rate> stands for the maximum allowed incomig rate in bytes per -second.

    Examples: -

    + + +

    3.1.7  Default Language

    + -

    The option language defines the default language of server strings that + +The option language defines the default language of server strings that can be seen by Jabber clients. If a Jabber client do not support xml:lang, the specified language is used. The default value is en. In order to take effect there must be a translation file -<language>.msg in ejabberd's msgs directory.

    Examples: -

    + + +

    3.2  Database and LDAP Configuration

    + -

    ejabberd uses its internal Mnesia database by default. However, it is -possible to use a relational database or an LDAP server to store persistant, + +ejabberd uses its internal Mnesia database by default. However, it is +possible to use a relational database or an LDAP server to store persistent, long-living data. ejabberd is very flexible: you can configure different authentication methods for different virtual hosts, you can configure different authentication mechanisms for the same virtual host (fallback), you can set -different storage systems for modules, and so forth.

    The following databases are supported by ejabberd: -

    + + +

    3.2.1  MySQL

    + -

    Although this section will describe ejabberd's configuration when you want to + +Although this section will describe ejabberd's configuration when you want to use the native MySQL driver, it does not describe MySQL's installation and database creation. Check the MySQL documentation and the tutorial Using ejabberd with MySQL native driver for information regarding these topics. Note that the tutorial contains information about ejabberd's configuration -which is duplicate to this section.

    Moreover, the file mysql.sql in the directory src/odbc might be interesting for +which is duplicate to this section.
    +
    +Moreover, the file mysql.sql in the directory src/odbc might be interesting for you. This file contains the ejabberd schema for MySQL. At the end of the file -you can find information to update your database schema.

    -

    Driver Compilation

    +you can find information to update your database schema.
    +
    + + +

    Driver Compilation

    + -

    You can skip this step if you installed ejabberd using a binary installer or -if the binary packages of ejabberd you are using include support for MySQL.

    1. + +You can skip this step if you installed ejabberd using a binary installer or +if the binary packages of ejabberd you are using include support for MySQL. +
      1. First, install the Erlang -MySQL library. Make sure the compiled files are in your Erlang path; you can -put them for example in the same directory as your ejabberd .beam files. -
      2. Then, configure and install ejabberd with ODBC support enabled (this is -also needed for native MySQL support!). This can be done, by using next -commands: -
        ./configure --enable-odbc && make install
-
      -

      Authentication

      + MySQL library. Make sure the compiled files are in your Erlang path; you can + put them for example in the same directory as your ejabberd .beam files. +

    2. Then, configure and install ejabberd with ODBC support enabled (this is + also needed for native MySQL support!). This can be done, by using next + commands: + 
      +./configure --enable-odbc && make install
+
    + + +

    Authentication

    + -

    The option value name may be misleading, as the auth_method name is used + +The option value name may be misleading, as the auth_method name is used for access to a relational database through ODBC, as well as through the native MySQL interface. Anyway, the first configuration step is to define the odbc auth_method. For example: -

    {host_config, "public.example.org", [{auth_method, [odbc]}]}.
-

    The actual database access is defined in the option odbc_server. Its +

    +{host_config, "public.example.org", [{auth_method, [odbc]}]}.
+
    +The actual database access is defined in the option odbc_server. Its value is used to define if we want to use ODBC, or one of the two native -interface available, PostgreSQL or MySQL.

    To use the native MySQL interface, you can pass a tuple of the following form as +interface available, PostgreSQL or MySQL.
    +
    +To use the native MySQL interface, you can pass a tuple of the following form as parameter: -

    {mysql, "Server", "Database", "Username", "Password"}
-

    mysql is a keyword that should be kept as is. For example: -

    {odbc_server, {mysql, "localhost", "test", "root", "password"}}.
-

    Optionally, it is possible to define the MySQL port to use. This +

    +{mysql, "Server", "Database", "Username", "Password"}
+
    +mysql is a keyword that should be kept as is. For example: +
    +{odbc_server, {mysql, "localhost", "test", "root", "password"}}.
+
    +Optionally, it is possible to define the MySQL port to use. This option is only useful, in very rare cases, when you are not running MySQL with the default port setting. The mysql parameter can thus take the following form: -

    {mysql, "Server", Port, "Database", "Username", "Password"}
-

    The Port value should be an integer, without quotes. For example: -

    {odbc_server, {mysql, "localhost", Port, "test", "root", "password"}}.
-
    -

    Storage

    +

    +{mysql, "Server", Port, "Database", "Username", "Password"}
+
    +The Port value should be an integer, without quotes. For example: +
    +{odbc_server, {mysql, "localhost", Port, "test", "root", "password"}}.
+
    + + +

    Storage

    + -

    MySQL also can be used to store information into from several ejabberd -modules. See section 3.3.1 to see which modules have a version + +MySQL also can be used to store information into from several ejabberd +modules. See section 3.3.1 to see which modules have a version with the `_odbc'. This suffix indicates that the module can be used with relational databases like MySQL. To enable storage to your database, just make sure that your database is running well (see previous sections), and replace the suffix-less or ldap module variant with the odbc module variant. Keep in mind -that you cannot have several variants of the same module loaded!

    -

    3.2.2  Microsoft SQL Server

    +that you cannot have several variants of the same module loaded!
    +
    + + +

    3.2.2  Microsoft SQL Server

    + -

    Although this section will describe ejabberd's configuration when you want to + +Although this section will describe ejabberd's configuration when you want to use Microsoft SQL Server, it does not describe Microsoft SQL Server's installation and database creation. Check the MySQL documentation and the tutorial Using ejabberd with MySQL native driver for information regarding these topics. Note that the tutorial contains information about ejabberd's configuration -which is duplicate to this section.

    Moreover, the file mssql.sql in the directory src/odbc might be interesting for +which is duplicate to this section.
    +
    +Moreover, the file mssql.sql in the directory src/odbc might be interesting for you. This file contains the ejabberd schema for Microsoft SQL Server. At the end -of the file you can find information to update your database schema.

    -

    Driver Compilation

    +of the file you can find information to update your database schema.
    +
    + + +

    Driver Compilation

    + -

    You can skip this step if you installed ejabberd using a binary installer or -if the binary packages of ejabberd you are using include support for ODBC.

    If you want to use Microsoft SQL Server with ODBC, you need to configure, + +You can skip this step if you installed ejabberd using a binary installer or +if the binary packages of ejabberd you are using include support for ODBC.
    +
    +If you want to use Microsoft SQL Server with ODBC, you need to configure, compile and install ejabberd with support for ODBC and Microsoft SQL Server enabled. This can be done, by using next commands: -

    ./configure --enable-odbc --enable-mssql && make install
-
    -

    Authentication

    +

    +./configure --enable-odbc --enable-mssql && make install
+
    + + +

    Authentication

    + -

    The configuration of Microsoft SQL Server is the same as the configuration of -ODBC compatible serers (see section 3.2.4).

    -

    Storage

    + +The configuration of Microsoft SQL Server is the same as the configuration of +ODBC compatible servers (see section 3.2.4).
    +
    + + +

    Storage

    + -

    Microsoft SQL Server also can be used to store information into from several -ejabberd modules. See section 3.3.1 to see which modules have + +Microsoft SQL Server also can be used to store information into from several +ejabberd modules. See section 3.3.1 to see which modules have a version with the `_odbc'. This suffix indicates that the module can be used with relational databases like Microsoft SQL Server. To enable storage to your database, just make sure that your database is running well (see previous sections), and replace the suffix-less or ldap module variant with the odbc module variant. Keep in mind that you cannot have several variants of the same -module loaded!

    -

    3.2.3  PostgreSQL

    +module loaded!
    +
    + + +

    3.2.3  PostgreSQL

    + -

    Although this section will describe ejabberd's configuration when you want to + +Although this section will describe ejabberd's configuration when you want to use the native PostgreSQL driver, it does not describe PostgreSQL's installation and database creation. Check the PostgreSQL documentation and the tutorial Using ejabberd with MySQL native driver for information regarding these topics. Note that the tutorial contains information about ejabberd's configuration -which is duplicate to this section.

    Also the file pg.sql in the directory src/odbc might be interesting for you. +which is duplicate to this section.
    +
    +Also the file pg.sql in the directory src/odbc might be interesting for you. This file contains the ejabberd schema for PostgreSQL. At the end of the file -you can find information to update your database schema.

    -

    Driver Compilation

    +you can find information to update your database schema.
    +
    + + +

    Driver Compilation

    + -

    You can skip this step if you installed ejabberd using a binary installer or + +You can skip this step if you installed ejabberd using a binary installer or if the binary packages of ejabberd you are using include support for -PostgreSQL.

    1. +PostgreSQL. +
      1. First, install the Erlang PgSQL library from -Jungerl. Make sure the compiled -files are in your Erlang path; you can put them for example in the same -directory as your ejabberd .beam files. -
      2. Then, configure, compile and install ejabberd with ODBC support enabled -(this is also needed for native PostgreSQL support!). This can be done, by -using next commands: -
        ./configure --enable-odbc && make install
-
      -

      Authentication

      + Jungerl. Make sure the compiled + files are in your Erlang path; you can put them for example in the same + directory as your ejabberd .beam files. +

    2. Then, configure, compile and install ejabberd with ODBC support enabled + (this is also needed for native PostgreSQL support!). This can be done, by + using next commands: + 
      +./configure --enable-odbc && make install
+
    + + +

    Authentication

    + -

    The option value name may be misleading, as the auth_method name is used + +The option value name may be misleading, as the auth_method name is used for access to a relational database through ODBC, as well as through the native PostgreSQL interface. Anyway, the first configuration step is to define the odbc auth_method. For example: -

    {host_config, "public.example.org", [{auth_method, [odbc]}]}.
-

    The actual database access is defined in the option odbc_server. Its +

    +{host_config, "public.example.org", [{auth_method, [odbc]}]}.
+
    +The actual database access is defined in the option odbc_server. Its value is used to define if we want to use ODBC, or one of the two native -interface available, PostgreSQL or MySQL.

    To use the native PostgreSQL interface, you can pass a tuple of the following +interface available, PostgreSQL or MySQL.
    +
    +To use the native PostgreSQL interface, you can pass a tuple of the following form as parameter: -

    {pgsql, "Server", "Database", "Username", "Password"}
-

    pgsql is a keyword that should be kept as is. For example: -

    {odbc_server, {pgsql, "localhost", "database", "ejabberd", "password"}}.
-

    Optionally, it is possible to define the PostgreSQL port to use. This +

    +{pgsql, "Server", "Database", "Username", "Password"}
+
    +pgsql is a keyword that should be kept as is. For example: +
    +{odbc_server, {pgsql, "localhost", "database", "ejabberd", "password"}}.
+
    +Optionally, it is possible to define the PostgreSQL port to use. This option is only useful, in very rare cases, when you are not running PostgreSQL with the default port setting. The pgsql parameter can thus take the following form: -

    {pgsql, "Server", Port, "Database", "Username", "Password"}
-

    The Port value should be an integer, without quotes. For example: -

    {odbc_server, {pgsql, "localhost", 5432, "database", "ejabberd", "password"}}.
-
    -

    Storage

    +

    +{pgsql, "Server", Port, "Database", "Username", "Password"}
+
    +The Port value should be an integer, without quotes. For example: +
    +{odbc_server, {pgsql, "localhost", 5432, "database", "ejabberd", "password"}}.
+
    + + +

    Storage

    + -

    PostgreSQL also can be used to store information into from several ejabberd -modules. See section 3.3.1 to see which modules have a version + +PostgreSQL also can be used to store information into from several ejabberd +modules. See section 3.3.1 to see which modules have a version with the `_odbc'. This suffix indicates that the module can be used with relational databases like PostgreSQL. To enable storage to your database, just make sure that your database is running well (see previous sections), and replace the suffix-less or ldap module variant with the odbc module variant. -Keep in mind that you cannot have several variants of the same module loaded!

    -

    3.2.4  ODBC Compatible

    +Keep in mind that you cannot have several variants of the same module loaded!
    +
    + + +

    3.2.4  ODBC Compatible

    + -

    Although this section will describe ejabberd's configuration when you want to + +Although this section will describe ejabberd's configuration when you want to use the ODBC driver, it does not describe the installation and database creation of your database. Check the documentation of your database. The tutorial Using ejabberd with MySQL native driver also can help you. Note that the tutorial contains information about ejabberd's configuration which is duplicate to -this section.

    -

    Compilation

    -

    You can skip this step if you installed ejabberd using a binary installer or +this section.
    +
    + + +

    Compilation

    + + +You can skip this step if you installed ejabberd using a binary installer or if the binary packages of ejabberd you are using include support for -ODBC.

    1. +ODBC. +
      1. First, install the Erlang -MySQL library. Make sure the compiled files are in your Erlang path; you can -put them for example in the same directory as your ejabberd .beam files. -
      2. Then, configure, compile and install ejabberd with ODBC support -enabled. This can be done, by using next commands: -
        ./configure --enable-odbc && make install
-
      -

      Authentication

      + MySQL library. Make sure the compiled files are in your Erlang path; you can + put them for example in the same directory as your ejabberd .beam files. +

    2. Then, configure, compile and install ejabberd with ODBC support + enabled. This can be done, by using next commands: + 
      +./configure --enable-odbc && make install
+
    + + +

    Authentication

    + -

    The first configuration step is to define the odbc auth_method. For + +The first configuration step is to define the odbc auth_method. For example: -

    {host_config, "public.example.org", [{auth_method, [odbc]}]}.
-

    The actual database access is defined in the option odbc_server. Its +

    +{host_config, "public.example.org", [{auth_method, [odbc]}]}.
+
    +The actual database access is defined in the option odbc_server. Its value is used to defined if we want to use ODBC, or one of the two native -interface available, PostgreSQL or MySQL.

    To use a relational database through ODBC, you can pass the ODBC connection +interface available, PostgreSQL or MySQL.
    +
    +To use a relational database through ODBC, you can pass the ODBC connection string as odbc_server parameter. For example: -

    {odbc_server, "DSN=database;UID=ejabberd;PWD=password"}.
-
    -

    Storage

    +

    +{odbc_server, "DSN=database;UID=ejabberd;PWD=password"}.
+
    + + +

    Storage

    + -

    An ODBC compatible database also can be used to store information into from -several ejabberd modules. See section 3.3.1 to see which + +An ODBC compatible database also can be used to store information into from +several ejabberd modules. See section 3.3.1 to see which modules have a version with the `_odbc'. This suffix indicates that the module can be used with ODBC compatible relational databases. To enable storage to your database, just make sure that your database is running well (see previous sections), and replace the suffix-less or ldap module variant with the odbc module variant. Keep in mind that you cannot have several variants of the same -module loaded!

    -

    3.2.5  LDAP

    +module loaded!
    +
    + + +

    3.2.5  LDAP

    + -

    ejabberd has built-in LDAP support. You can authenticate users against LDAP + +ejabberd has built-in LDAP support. You can authenticate users against LDAP server and use LDAP directory as vCard storage. Shared rosters are not supported -yet.

    -

    Connection

    -

    Parameters: -

    -ldap_server
    IP address or dns name of your +yet.
    +
    + + +

    Connection

    + + +Parameters: +
    +ldap_server
    IP address or dns name of your LDAP server. This option is required. -
    ldap_port
    Port to connect to your LDAP server. -The default value is 389. -
    ldap_rootdn
    Bind DN. The default value -is "" which means `anonymous connection'. -
    ldap_password
    Bind password. The default -value is "". -

    Example: -

      {auth_method, ldap}.
+
    ldap_port
     Port to connect to your LDAP server.
+ The initial default value is 389, so it is used when nothing is set into the 
+configuration file. 
+If you configure a value, it is stored in ejabberd's database. 
+Then, if you remove that value from the configuration file, 
+the value previously stored in the database will be used instead of the default 389.
+
    ldap_rootdn
     Bind DN. The default value
+ is "" which means `anonymous connection'.
+
    ldap_password
     Bind password. The default
+ value is "".
+
    +Example: +
    +  {auth_method, ldap}.
   {ldap_servers, ["ldap.example.org"]}.
   {ldap_port, 389}.
   {ldap_rootdn, "cn=Manager,dc=domain,dc=org"}.
   {ldap_password, "secret"}.
-

    Note that current LDAP implementation does not support SSL secured communication -and SASL authentication.

    -

    Authentication

    -

    You can authenticate users against an LDAP directory. Available options are:

    -ldap_base
    LDAP base directory which stores -users accounts. This option is required. -
    ldap_uids
    LDAP attribute which holds a list -of attributes to use as alternatives for getting the JID. The value is of -the form: [{ldap_uidattr}] or [{ldap_uidattr, -ldap_uidattr_format}]. You can use as many comma separated tuples -{ldap_uidattr, ldap_uidattr_format} that is needed. The default -value is [{"uid", "%u"}]. The defaut ldap_uidattr_format -is "%u". The values for ldap_uidattr and -ldap_uidattr_format are described as follow: -
    -ldap_uidattr
    LDAP attribute which holds -the user's part of a JID. The default value is "uid". -
    ldap_uidattr_format
    Format of -the ldap_uidattr variable. The format must contain one and -only one pattern variable "%u" which will be replaced by the -user's part of a JID. For example, "%u@example.org". The default -value is "%u". -
    -
    ldap_filter
    -RFC 2254 LDAP filter. The -default is none. Example: -"(&(objectClass=shadowAccount)(memberOf=Jabber Users))". Please, do -not forget to close brackets and do not use superfluous whitespaces. Also you -must not use ldap_uidattr attribute in filter because this -attribute will be substituted in LDAP filter automatically. -
    -

    Examples

    -

    -
    Common example

    Let's say ldap.example.org is the name of our LDAP server. We have + +Note that current LDAP implementation does not support SSL secured communication +and SASL authentication.
    +
    + + +

    Authentication

    + + +You can authenticate users against an LDAP directory. Available options are: +
    +ldap_base
    LDAP base directory which stores + users accounts. This option is required. +
    ldap_uids
    LDAP attribute which holds a list + of attributes to use as alternatives for getting the JID. The value is of + the form: [{ldap_uidattr}] or [{ldap_uidattr, + ldap_uidattr_format}]. You can use as many comma separated tuples + {ldap_uidattr, ldap_uidattr_format} that is needed. The default + value is [{"uid", "%u"}]. The defaut ldap_uidattr_format + is "%u". The values for ldap_uidattr and + ldap_uidattr_format are described as follow: +
    + ldap_uidattr
    LDAP attribute which holds + the user's part of a JID. The default value is "uid". +
    ldap_uidattr_format
    Format of + the ldap_uidattr variable. The format must contain one and + only one pattern variable "%u" which will be replaced by the + user's part of a JID. For example, "%u@example.org". The default + value is "%u". +
    +
    ldap_filter
    + RFC 2254 LDAP filter. The + default is none. Example: + "(&(objectClass=shadowAccount)(memberOf=Jabber Users))". Please, do + not forget to close brackets and do not use superfluous whitespaces. Also you + must not use ldap_uidattr attribute in filter because this + attribute will be substituted in LDAP filter automatically. +
    + + +

    Examples

    + + + + +
    Common example
    + +Let's say ldap.example.org is the name of our LDAP server. We have users with their passwords in "ou=Users,dc=example,dc=org" directory. Also we have addressbook, which contains users emails and their additional infos in "ou=AddressBook,dc=example,dc=org" directory. Corresponding -authentication section should looks like this:

      %% authentication method
+authentication section should looks like this:
+
    +  %% authentication method
   {auth_method, ldap}.
   %% DNS name of our LDAP server
   {ldap_servers, ["ldap.example.org"]}.
@@ -1192,10 +1785,13 @@ authentication section should looks like this:
      %% aut
   {ldap_base, "ou=Users,dc=example,dc=org"}.
   %% We want to authorize users from 'shadowAccount' object class only
   {ldap_filter, "(objectClass=shadowAccount)"}.
-
    Now we want to use users LDAP-info as their vCards. We have four attributes
-defined in our LDAP schema: "mail" — email address, "givenName"
-— first name, "sn" — second name, "birthDay" — birthday.
-Also we want users to search each other. Let's see how we can set it up:
      {modules,
+
    
+Now we want to use users LDAP-info as their vCards. We have four attributes
+defined in our LDAP schema: "mail" — email address, "givenName"
+— first name, "sn" — second name, "birthDay" — birthday.
+Also we want users to search each other. Let's see how we can set it up:
+
    +  {modules,
     ...
     {mod_vcard_ldap,
      [
@@ -1236,12 +1832,20 @@ Also we want users to search each other. Let's see how we can set it up:
    Note that mod_vcard_ldap module checks for the existence of the user before
-searching in his information in LDAP.
    
-
    Active Directory
    
+
    
+Note that mod_vcard_ldap module checks for the existence of the user before
+searching in his information in LDAP.
    
+
    
+
+
+
    Active Directory
    
+
 
-
    Active Directory is just an LDAP-server with predefined attributes. A sample
-configuration is shown below:
      {auth_method, ldap}.
+
+Active Directory is just an LDAP-server with predefined attributes. A sample
+configuration is shown below:
+
    +  {auth_method, ldap}.
   {ldap_servers, ["office.org"]}.    % List of LDAP servers
   {ldap_base, "DC=office,DC=org"}. % Search base of LDAP directory
   {ldap_rootdn, "CN=Administrator,CN=Users,DC=office,DC=org"}. % LDAP manager
@@ -1287,179 +1891,348 @@ configuration is shown below:
      {auth_method, ldap}.
     ]},
     ...
   }.
-
    
-
    3.3  Modules Configuration
    
+
    
+
+
+
    3.3  Modules Configuration
    
+
 
-
    The option modules defines the list of modules that will be loaded after
+
+The option modules defines the list of modules that will be loaded after
 ejabberd's startup. Each entry in the list is a tuple in which the first
 element is the name of a module and the second is a list of options for that
-module.
    Examples:
-
    • 
+module.
      
+
      
+Examples:
+
      • 
 In this example only the module mod_echo is loaded and no module
-options are specified between the square brackets:
-
          {modules,
+ options are specified between the square brackets:
+ 
        +  {modules,
    [{mod_echo,      []}
    ]}.
-
      • In the second example the modules mod_echo, mod_time, and
-mod_version are loaded without options. Remark that, besides the last entry,
-all entries end with a comma:
-
          {modules,
+
      • In the second example the modules mod_echo, mod_time, and
+ mod_version are loaded without options. Remark that, besides the last entry,
+ all entries end with a comma:
+ 
        +  {modules,
    [{mod_echo,      []},
     {mod_time,      []},
     {mod_version,   []}
    ]}.
-
      
-
      3.3.1  Overview
      
+
    
+
+
+
    3.3.1  Overview
    
+
 
-
    The following table lists all modules available in the official ejabberd
+
+The following table lists all modules available in the official ejabberd
 distribution. You can find more
-contributed modules on the
+contributed modules on the
 ejabberd website. Please remember that these contributions might not work or
 that they can contain severe bugs and security leaks. Therefore, use them at
-your own risk!
    You can see which database backend each module needs by looking at the suffix:
-
    • 
+your own risk!
      
+
      
+You can see which database backend each module needs by looking at the suffix:
+
      • 
 `_ldap', this means that the module needs an LDAP server as backend.
-
      • `_odbc', this means that the module needs a supported database
-(see 3.2) as backend.
-
      • No suffix, this means that the modules uses Erlang's built-in database
-Mnesia as backend.
-
      If you want to
+
    • `_odbc', this means that the module needs a supported database
+ (see 3.2) as backend.
+
    • No suffix, this means that the modules uses Erlang's built-in database
+ Mnesia as backend.
+
    
+If you want to
 It is possible to use a relational database to store pieces of
 information. You can do this by changing the module name to a name with an
 _odbc suffix in ejabberd config file. You can use a relational
-database for the following data:
    • 
+database for the following data:
+
      • 
 Last connection date and time: Use mod_last_odbc instead of
-mod_last.
-
      • Offline messages: Use mod_offline_odbc instead of
-mod_offline.
-
      • Rosters: Use mod_roster_odbc instead of mod_roster.
-
      • Users' VCARD: Use mod_vcard_odbc instead of mod_vcard.
-
      
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
      ModuleFeatureDependenciesNeeded for XMPP?
      mod_adhocAd-Hoc Commands (XEP-0050) No
      mod_announceManage announcementsmod_adhocNo
      mod_configureSupport for onlinemod_adhocNo
       configuration of ejabberd  
      mod_discoService Discovery (XEP-0030) No
      mod_echoEchoes Jabber packets No
      mod_ircIRC transport No
      mod_lastLast Activity (XEP-0012) No
      mod_last_odbcLast Activity (XEP-0012)supported database (*)No
      mod_mucMulti-User Chat (XEP-0045) No
      mod_muc_logMulti-User Chat room loggingmod_mucNo
      mod_offlineOffline message storage No
      mod_offline_odbcOffline message storagesupported database (*)No
      mod_privacyBlocking Communication Yes
      mod_privatePrivate XML Storage (XEP-0049) No
      mod_private_odbcPrivate XML Storage (XEP-0049)supported database (*)No
      mod_proxy65SOCKS5 Bytestreams (XEP-0065) No
      mod_pubsubPublish-Subscribe (XEP-0060) No
      mod_registerIn-Band Registration (XEP-0077) No
      mod_rosterRoster management Yes (**)
      mod_roster_odbcRoster managementsupported database (*)Yes (**)
      mod_service_logCopy user messages to logger service No
      mod_shared_rosterShared roster managementmod_roster orNo
        mod_roster_odbc 
      mod_statsStatistics Gathering (XEP-0039) No
      mod_timeEntity Time (XEP-0090) No
      mod_vcardvcard-temp (XEP-0054) No
      mod_vcard_ldapvcard-temp (XEP-0054)LDAP serverNo
      mod_vcard_odbcvcard-temp (XEP-0054)supported database (*)No
      mod_versionSoftware Version (XEP-0092) No
      
-
      • 
-(*) For a list of supported databases, see section 3.2.
-
      • (**) This module or a similar one with another database backend is needed for
+ mod_last.
+
      • Offline messages: Use mod_offline_odbc instead of
+ mod_offline.
+
      • Rosters: Use mod_roster_odbc instead of mod_roster.
+
      • Users' VCARD: Use mod_vcard_odbc instead of mod_vcard.
+
      
+
      
+ 
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
      ModuleFeatureDependenciesNeeded for XMPP?
      mod_adhocAd-Hoc Commands (XEP-0050) No
      mod_announceManage announcementsmod_adhocNo
      mod_configureSupport for onlinemod_adhocNo
       configuration of ejabberd  
      mod_discoService Discovery (XEP-0030) No
      mod_echoEchoes Jabber packets No
      mod_ircIRC transport No
      mod_lastLast Activity (XEP-0012) No
      mod_last_odbcLast Activity (XEP-0012)supported database (*)No
      mod_mucMulti-User Chat (XEP-0045) No
      mod_muc_logMulti-User Chat room loggingmod_mucNo
      mod_offlineOffline message storage No
      mod_offline_odbcOffline message storagesupported database (*)No
      mod_privacyBlocking Communication Yes
      mod_privatePrivate XML Storage (XEP-0049) No
      mod_private_odbcPrivate XML Storage (XEP-0049)supported database (*)No
      mod_proxy65SOCKS5 Bytestreams (XEP-0065) No
      mod_pubsubPublish-Subscribe (XEP-0060) No
      mod_registerIn-Band Registration (XEP-0077) No
      mod_rosterRoster management Yes (**)
      mod_roster_odbcRoster managementsupported database (*)Yes (**)
      mod_service_logCopy user messages to logger service No
      mod_shared_rosterShared roster managementmod_roster orNo
        mod_roster_odbc 
      mod_statsStatistics Gathering (XEP-0039) No
      mod_timeEntity Time (XEP-0090) No
      mod_vcardvcard-temp (XEP-0054) No
      mod_vcard_ldapvcard-temp (XEP-0054)LDAP serverNo
      mod_vcard_odbcvcard-temp (XEP-0054)supported database (*)No
      mod_versionSoftware Version (XEP-0092) No
      
+
      
+
      • 
+(*) For a list of supported databases, see section 3.2.
+
      • (**) This module or a similar one with another database backend is needed for
 XMPP compliancy.
-
      
-
      3.3.2  Common Options
      
-
      The following options are used by many modules. Therefore, they are described in
-this separate section.
      
-
      iqdisc
      
+
    
+
+
+
    3.3.2  Common Options
    
+
+
+The following options are used by many modules. Therefore, they are described in
+this separate section.
    
+
    
+
+
+
    iqdisc
    
+
 
-
    Many modules define handlers for processing IQ queries of different namespaces
-to this server or to a user (e. g. to example.org or to
+
+Many modules define handlers for processing IQ queries of different namespaces
+to this server or to a user (e. g. to example.org or to
 user@example.org). This option defines processing discipline for
 these queries. Possible values are:
-
    
-no_queue
     All queries of a namespace with this processing discipline are
-processed immediately. This also means that no other packets can be processed
-until this one has been completely processed. Hence this discipline is not
-recommended if the processing of a query can take a relatively long time.
-
    one_queue
     In this case a separate queue is created for the processing
-of IQ queries of a namespace with this discipline. In addition, the processing
-of this queue is done in parallel with that of other packets. This discipline
-is most recommended.
-
    parallel
     For every packet with this discipline a separate Erlang process
-is spawned. Consequently, all these packets are processed in parallel.
-Although spawning of Erlang process has a relatively low cost, this can break
-the server's normal work, because the Erlang emulator has a limit on the
-number of processes (32000 by default).
-
    Example:
-
      {modules,
+
    
+no_queue
     All queries of a namespace with this processing discipline are
+ processed immediately. This also means that no other packets can be processed
+ until this one has been completely processed. Hence this discipline is not
+ recommended if the processing of a query can take a relatively long time.
+
    one_queue
     In this case a separate queue is created for the processing
+ of IQ queries of a namespace with this discipline. In addition, the processing
+ of this queue is done in parallel with that of other packets. This discipline
+ is most recommended.
+
    parallel
     For every packet with this discipline a separate Erlang process
+ is spawned. Consequently, all these packets are processed in parallel.
+ Although spawning of Erlang process has a relatively low cost, this can break
+ the server's normal work, because the Erlang emulator has a limit on the
+ number of processes (32000 by default).
+
    
+Example:
+
    +  {modules,
    [
     ...
     {mod_time, [{iqdisc, no_queue}]},
     ...
    ]}.
-
    
-
    host
    
+
    
+
+
+
    host
    
+
 
-
    This option defines the Jabber ID of a service provided by an ejabberd module.
-The keyword "@HOST@" is replaced at start time with the real virtual host string.
    This example configures
+
+This option defines the Jabber ID of a service provided by an ejabberd module.
+The keyword "@HOST@" is replaced at start time with the real virtual host string.
    
+
    
+This example configures
 the echo module to provide its echoing service 
 in the Jabber ID mirror.example.org:
-
      {modules,
+ 
    +  {modules,
    [
     ...
     {mod_echo, [{host, "mirror.example.org"}]},
     ...
    ]}.
-
    However, if there are several virtual hosts and this module is enabled in all of them,
+
    
+However, if there are several virtual hosts and this module is enabled in all of them,
 the "@HOST@" keyword must be used:
-
      {modules,
+ 
    +  {modules,
    [
     ...
     {mod_echo, [{host, "mirror.@HOST@"}]},
     ...
    ]}.
-
    
-
    3.3.3  mod_announce
    
+
    
+
+
+
    3.3.3  mod_announce
    
+
 
-
    This module enables configured users to broadcast announcements and to set
+
+This module enables configured users to broadcast announcements and to set
 the message of the day (MOTD). Configured users can do these actions with their
 Jabber client using Ad-hoc commands or by sending messages to specific JIDs. These JIDs are listed in
 next paragraph. The first JID in each entry will apply only to the virtual host
 example.org, while the JID between brackets will apply to all virtual
 hosts:
-
    
-example.org/announce/all (example.org/announce/all-hosts/all)
     The
-message is sent to all registered users. If the user is online and connected
-to several resources, only the resource with the highest priority will receive
-the message. If the registered user is not connected, the message will be
-stored offline in assumption that offline storage
-(see section 3.3.10) is enabled.
-
    example.org/announce/online (example.org/announce/all-hosts/online)
    The
-message is sent to all connected users. If the user is online and connected
-to several resources, all resources will receive the message.
-
    example.org/announce/motd (example.org/announce/all-hosts/motd)
    The
-message is set as the message of the day (MOTD) and is sent to users when they
-login. In addition the message is sent to all connected users (similar to
-announce/online).
-
    example.org/announce/motd/update (example.org/announce/all-hosts/motd/update)
    
-The message is set as message of the day (MOTD) and is sent to users when they
-login. The message is not sent to any currently connected user.
-
    example.org/announce/motd/delete (example.org/announce/all-hosts/motd/delete)
    
-Any message sent to this JID removes the existing message of the day (MOTD).
-
    Options:
-
    
-access
     This option specifies who is allowed to
-send announcements and to set the message of the day (by default, nobody is
-able to send such messages).
-
    Examples:
-
    • 
+
      
+example.org/announce/all (example.org/announce/all-hosts/all)
       The
+ message is sent to all registered users. If the user is online and connected
+ to several resources, only the resource with the highest priority will receive
+ the message. If the registered user is not connected, the message will be
+ stored offline in assumption that offline storage
+ (see section 3.3.10) is enabled.
+
      example.org/announce/online (example.org/announce/all-hosts/online)
      The
+ message is sent to all connected users. If the user is online and connected
+ to several resources, all resources will receive the message.
+
      example.org/announce/motd (example.org/announce/all-hosts/motd)
      The
+ message is set as the message of the day (MOTD) and is sent to users when they
+ login. In addition the message is sent to all connected users (similar to
+ announce/online).
+
      example.org/announce/motd/update (example.org/announce/all-hosts/motd/update)
      
+ The message is set as message of the day (MOTD) and is sent to users when they
+ login. The message is not sent to any currently connected user.
+
      example.org/announce/motd/delete (example.org/announce/all-hosts/motd/delete)
      
+ Any message sent to this JID removes the existing message of the day (MOTD).
+
      
+Options:
+
      
+access
       This option specifies who is allowed to
+ send announcements and to set the message of the day (by default, nobody is
+ able to send such messages).
+
      
+Examples:
+
      • 
 Only administrators can send announcements:
-
          {access, announce, [{allow, admins}]}.
+ 
        +  {access, announce, [{allow, admins}]}.
 
   {modules,
    [
@@ -1467,8 +2240,9 @@ Only administrators can send announcements:
     {mod_announce, [{access, announce}]},
     ...
    ]}.
-
      • Administrators as well as the direction can send announcements:
-
          {acl, direction, {user, "big_boss", "example.org"}}.
+
      • Administrators as well as the direction can send announcements:
+
        +  {acl, direction, {user, "big_boss", "example.org"}}.
   {acl, direction, {user, "assistant", "example.org"}}.
   {acl, admins, {user, "admin", "example.org"}}.
   ...
@@ -1481,117 +2255,147 @@ Only administrators can send announcements:
     {mod_announce, [{access, announce}]},
     ...
    ]}.
-
      Note that mod_announce can be resource intensive on large
+
    
+Note that mod_announce can be resource intensive on large
 deployments as it can broadcast lot of messages. This module should be
-disabled for instances of ejabberd with hundreds of thousands users.
    
-
    3.3.4  mod_disco
    
+disabled for instances of ejabberd with hundreds of thousands users.
    
+
    
+
+
+
    3.3.4  mod_disco
    
+
 
-
    This module adds support for Service Discovery (XEP-0030). With
+
+This module adds support for Service Discovery (XEP-0030). With
 this module enabled, services on your server can be discovered by
 Jabber clients. Note that ejabberd has no modules with support
 for the superseded Jabber Browsing (XEP-0011) and Agent Information
 (XEP-0094). Accordingly, Jabber clients need to have support for
 the newer Service Discovery protocol if you want them be able to discover
-the services you offer.
    Options:
-
    
-iqdisc
     This specifies 
+the services you offer.
    
+
    
+Options:
+
    
+iqdisc
     This specifies 
 the processing discipline for Service Discovery (http://jabber.org/protocol/disco#items and
-http://jabber.org/protocol/disco#info) IQ queries (see section 3.3.2).
-
    extra_domains
     With this option,
-extra domains can be added to the Service Discovery item list.
-
    Examples:
-
    • 
+ http://jabber.org/protocol/disco#info) IQ queries (see section 3.3.2).
+
      extra_domains
       With this option,
+ extra domains can be added to the Service Discovery item list.
+
    
+Examples:
+
    • 
 To serve a link to the Jabber User Directory on jabber.org:
-
        {modules,
+ 
      +  {modules,
    [
     ...
     {mod_disco, [{extra_domains, ["users.jabber.org"]}]},
     ...
    ]}.
-
    • To serve a link to the transports on another server:
-
        {modules,
+
    • To serve a link to the transports on another server:
+ 
      +  {modules,
    [
     ...
     {mod_disco, [{extra_domains, ["icq.example.com",
                                   "msn.example.com"]}]},
     ...
    ]}.
-
    • To serve a link to a few friendly servers:
-
        {modules,
+
    • To serve a link to a few friendly servers:
+ 
      +  {modules,
    [
     ...
     {mod_disco, [{extra_domains, ["example.org",
                                   "example.com"]}]},
     ...
    ]}.
-
    
-
    3.3.5  mod_echo
    
+
    
+
+
+
    3.3.5  mod_echo
    
+
 
-
    This module simply echoes any Jabber
+
+This module simply echoes any Jabber
 packet back to the sender. This mirror can be of interest for
-ejabberd and Jabber client debugging.
    Options:
-
    
+ejabberd and Jabber client debugging.
    
+
    
+Options:
+
    
 
-host
      This option defines the Jabber ID of the
-service. If the host option is not specified, the Jabber ID will be the
-hostname of the virtual host with the prefix `echo.'. The keyword "@HOST@"
-is replaced at start time with the real virtual host name.
+ host
      This option defines the Jabber ID of the
+ service. If the host option is not specified, the Jabber ID will be the
+ hostname of the virtual host with the prefix `echo.'. The keyword "@HOST@"
+ is replaced at start time with the real virtual host name.
 
-
    Example: Mirror, mirror, on the wall, who is the most beautiful
-of them all?
-
      {modules,
+
    
+Example: Mirror, mirror, on the wall, who is the most beautiful
+ of them all?
+ 
    +  {modules,
    [
     ...
     {mod_echo, [{host, "mirror.example.org"}]},
     ...
    ]}.
-
    
-
    3.3.6  mod_irc
    
+
    + + +

    3.3.6  mod_irc

    + -

    This module is an IRC transport that can be used to join channels on IRC -servers.

    End user information: -

    +Options: +
    -host
    This option defines the Jabber ID of the -service. If the host option is not specified, the Jabber ID will be the -hostname of the virtual host with the prefix `irc.'. The keyword "@HOST@" -is replaced at start time with the real virtual host name. + host
    This option defines the Jabber ID of the + service. If the host option is not specified, the Jabber ID will be the + hostname of the virtual host with the prefix `irc.'. The keyword "@HOST@" + is replaced at start time with the real virtual host name. -
    access
    This option can be used to specify who -may use the IRC transport (default value: all). -
    default_encoding
    Set the default IRC encoding (default value: "koi8-r"). -

    Examples: -

    + + +

    3.3.7  mod_last

    + -

    This module adds support for Last Activity (XEP-0012). It can be used to + +This module adds support for Last Activity (XEP-0012). It can be used to discover when a disconnected user last accessed the server, to know when a connected user was last active on the server, or to query the uptime of the -ejabberd server.

    Options: -

    -iqdisc
    This specifies -the processing discipline for Last activity (jabber:iq:last) IQ queries (see section 3.3.2). -
    -

    3.3.8  mod_muc

    +ejabberd server.
    +
    +Options: +

    +iqdisc
    This specifies +the processing discipline for Last activity (jabber:iq:last) IQ queries (see section 3.3.2). +
    + + +

    3.3.8  mod_muc

    + -

    With this module enabled, your server will support Multi-User Chat -(XEP-0045). End users will be able to join text conferences. Notice -that this module is not (yet) clusterable.

    Some of the features of Multi-User Chat: -

    +The MUC service allows any Jabber ID to register a nickname, +so nobody else can use that nickname in any room in the MUC service. +To register a nickname, open the Service Discovery in your +Jabber client and Register in the MUC service.
    +
    +The MUC service allows the service administrator to send a message +to all existing chatrooms. +To do so, send the message to the Jabber ID of the MUC service.
    +
    +This module supports clustering and load +balancing. One module can be started per cluster node. Rooms are +distributed at creation time on all available MUC module +instances. The multi-user chat module is clustered but the room +themselves are not clustered nor fault-tolerant: if the node managing a +set of rooms goes down, the rooms disappear and they will be recreated +on an available node on first connection attempt.
    +
    +Options: +
    -host
    This option defines the Jabber ID of the -service. If the host option is not specified, the Jabber ID will be the -hostname of the virtual host with the prefix `conference.'. The keyword "@HOST@" -is replaced at start time with the real virtual host name. + host
    This option defines the Jabber ID of the + service. If the host option is not specified, the Jabber ID will be the + hostname of the virtual host with the prefix `conference.'. The keyword "@HOST@" + is replaced at start time with the real virtual host name. -
    access
    You can specify who is allowed to use -the Multi-User Chat service (by default, everyone is allowed to use it). -
    access_create
    To configure who is -allowed to create new rooms at the Multi-User Chat service, this option -can be used (by default, everybody is allowed to create rooms). -
    access_persistent
    To configure who is -allowed to modify the 'persistent' chatroom option -(by default, everybody is allowed to modify that option). -
    access_admin
    This option specifies -who is allowed to administrate the Multi-User Chat service (the default -value is none, which means that only the room creator can -administer his room). By sending a message to the service JID, -administrators can send service messages that will be displayed in every -active room. -
    history_size
    A small history of the -current discussion is sent to users when they enter the room. With this option -you can define the number of history messages to keep and send to users -joining the room. The value is an integer. Setting the value to 0 -disables the history feature and, as a result, nothing is kept in memory. The -default value is 20. This value is global and thus affects all rooms on -the server.
    max_users
    This option defines at -the server level, the maximum number of users allowed per MUC -room. It can be lowered in each room configuration but cannot be -increased in individual MUC room configuration. The default value is -200.
    max_users_admin_threshold
    - This option defines the -number of MUC admins or owners to allow to enter the room even if -the maximum number of allowed users is reached. The default limits -is 5. In most cases this default value is the best setting.
    min_message_interval
    +
    access
    You can specify who is allowed to use + the Multi-User Chat service (by default, everyone is allowed to use it). +
    access_create
    To configure who is + allowed to create new rooms at the Multi-User Chat service, this option + can be used (by default, everybody is allowed to create rooms). +
    access_persistent
    To configure who is + allowed to modify the 'persistent' chatroom option + (by default, everybody is allowed to modify that option). +
    access_admin
    This option specifies + who is allowed to administrate the Multi-User Chat service (the default + value is none, which means that only the room creator can + administer his room). By sending a message to the service JID, + administrators can send service messages that will be displayed in every + active room. +
    history_size
    A small history of the + current discussion is sent to users when they enter the room. With this option + you can define the number of history messages to keep and send to users + joining the room. The value is an integer. Setting the value to 0 + disables the history feature and, as a result, nothing is kept in memory. The + default value is 20. This value is global and thus affects all rooms on + the server.
    +
    +
    max_users
    This option defines at + the server level, the maximum number of users allowed per MUC + room. It can be lowered in each room configuration but cannot be + increased in individual MUC room configuration. The default value is + 200.
    +
    +
    max_users_admin_threshold
    + This option defines the + number of MUC admins or owners to allow to enter the room even if + the maximum number of allowed users is reached. The default limits + is 5. In most cases this default value is the best setting.
    +
    +
    min_message_interval
    This option defines the minimum interval between two messages send by a user in seconds. This option is global and valid for all chat rooms. A decimal value can be used. When this option is not defined, @@ -1673,7 +2512,7 @@ broadcasted by the service. A good value for this minimum message interval is 0.4 second. If a user tries to send messages faster, an error is send back explaining that the message have been discarded and describing the reason why the message is not acceptable. -
    min_presence_interval
    +
    min_presence_interval
    This option defines the minimum of time between presence changes coming from a given user in seconds. This option is global and valid for all chat rooms. A decimal value can be used. When this option is @@ -1685,30 +2524,32 @@ interval, the presence is cached by ejabberd and only the last presence is broadcasted to all users in the room after expiration of the interval delay. Intermediate presence packets are silently discarded. A good value for this option is 4 seconds. -
    default_room_opts
    This option allow -to define the desired default room options. -Obviously, the room creator can modify the room options at any time. -The available room options are: -allow_change_subj, allow_private_messages, -allow_query_users, allow_user_invites, -anonymous, logging, members_by_default, -members_only, moderated, password, -password_protected, persistent, -public, public_list, title. -All of them can be set to true or false, -except password and title which are strings. -

    Examples: -

    + + +

    3.3.9  mod_muc_log

    + -

    This module enables optional logging of Multi-User Chat (MUC) conversations to + +This module enables optional logging of Multi-User Chat (MUC) conversations to HTML. Once you enable this module, users can join a chatroom using a MUC capable Jabber client, and if they have enough privileges, they can request the -configuration form in which they can set the option to enable chatroom logging.

    Features: -

    + + +

    3.3.10  mod_offline

    + -

    This module implements offline message storage. This means that all messages + +This module implements offline message storage. This means that all messages sent to an offline user will be stored on the server until that user comes online again. Thus it is very similar to how email works. Note that ejabberdctl has a command to delete expired messages -(see section 4.1.2).

    -user_max_messages
    This option -is use to set a max number of offline messages per user (quota). Its -value can be either infinity or a strictly positive -integer. The default value is infinity. -
    -

    3.3.11  mod_privacy

    +(see section 4.1.2). +

    + user_max_messages
    This option + is use to set a max number of offline messages per user (quota). Its + value can be either infinity or a strictly positive + integer. The default value is infinity. +
    + + +

    3.3.11  mod_privacy

    + -

    This module implements Blocking Communication (also known as Privacy Rules) + +This module implements Blocking Communication (also known as Privacy Rules) as defined in section 10 from XMPP IM. If end users have support for it in their Jabber client, they will be able to: -

    +
    • Retrieving one's privacy lists. -
    • Adding, removing, and editing one's privacy lists. -
    • Setting, changing, or declining active lists. -
    • Setting, changing, or declining the default list (i.e., the list that -is active by default). -
    • Allowing or blocking messages based on JID, group, or subscription type -(or globally). -
    • Allowing or blocking inbound presence notifications based on JID, group, -or subscription type (or globally). -
    • Allowing or blocking outbound presence notifications based on JID, group, -or subscription type (or globally). -
    • Allowing or blocking IQ stanzas based on JID, group, or subscription type -(or globally). -
    • Allowing or blocking all communications based on JID, group, or -subscription type (or globally). -
    +
  • Adding, removing, and editing one's privacy lists. +
  • Setting, changing, or declining active lists. +
  • Setting, changing, or declining the default list (i.e., the list that + is active by default). +
  • Allowing or blocking messages based on JID, group, or subscription type + (or globally). +
  • Allowing or blocking inbound presence notifications based on JID, group, + or subscription type (or globally). +
  • Allowing or blocking outbound presence notifications based on JID, group, + or subscription type (or globally). +
  • Allowing or blocking IQ stanzas based on JID, group, or subscription type + (or globally). +
  • Allowing or blocking all communications based on JID, group, or + subscription type (or globally). + (from http://www.xmpp.org/specs/rfc3921.html#privacy) -

    • Options: -

    -iqdisc
    This specifies -the processing discipline for Blocking Communication (jabber:iq:privacy) IQ queries (see section 3.3.2). -
    -

    3.3.12  mod_private

    +

    +Options: +
    +iqdisc
    This specifies +the processing discipline for Blocking Communication (jabber:iq:privacy) IQ queries (see section 3.3.2). +
    + + +

    3.3.12  mod_private

    + -

    This module adds support for Private XML Storage (XEP-0049): -

    + +This module adds support for Private XML Storage (XEP-0049): +
    Using this method, Jabber entities can store private data on the server and retrieve it whenever necessary. The data stored might be anything, as long as it is valid XML. One typical usage for this namespace is the server-side storage of client-specific preferences; another is Bookmark Storage (XEP-0048). -

    Options: -

    -iqdisc
    This specifies -the processing discipline for Private XML Storage (jabber:iq:private) IQ queries (see section 3.3.2). -
    -

    3.3.13  mod_proxy65

    +

    +Options: +
    +iqdisc
    This specifies +the processing discipline for Private XML Storage (jabber:iq:private) IQ queries (see section 3.3.2). +
    + + +

    3.3.13  mod_proxy65

    + -

    This module implements SOCKS5 Bytestreams (XEP-0065). + +This module implements SOCKS5 Bytestreams (XEP-0065). It allows ejabberd to act as a file transfer proxy between two -XMPP clients.

    Options: -

    -host
    This option defines the hostname of the service. +XMPP clients.
    +
    +Options: +
    +host
    This option defines the hostname of the service. If this option is not set, the prefix `proxy.' is added to ejabberd hostname. -
    name
    Defines Service Discovery name of the service. +
    name
    Defines Service Discovery name of the service. Default is "SOCKS5 Bytestreams". -
    ip
    This option specifies which network interface +
    ip
    This option specifies which network interface to listen for. Default is an IP address of the service's DNS name, or, if fails, {127,0,0,1}. -
    port
    This option defines port to listen for -incoming connections. Default is 7777. -
    auth_type
    SOCKS5 authentication type. +
    port
    This option defines port to listen for +incoming connections. Default is 7777. +
    auth_type
    SOCKS5 authentication type. Possible values are anonymous and plain. Default is anonymous. -
    access
    Defines ACL for file transfer initiators. +
    access
    Defines ACL for file transfer initiators. Default is all. -
    max_connections
    Maximum number of +
    max_connections
    Maximum number of active connections per file transfer initiator. No limit by default. -
    shaper
    This option defines shaper for +
    shaper
    This option defines shaper for the file transfer peers. Shaper with the maximum bandwidth will be selected. Default is none. -

    Examples: -

    • +
    +Examples: + -

    3.3.14  mod_pubsub

    + + + +

    3.3.14  mod_pubsub

    + -

    This module offers a Publish-Subscribe Service (XEP-0060). + +This module offers a Publish-Subscribe Service (XEP-0060). Publish-Subscribe can be used to develop (examples are taken from the XEP): -

    +
    • -news feeds and content syndacation, -
    • avatar management, -
    • shared bookmarks, -
    • auction and trading systems, -
    • online catalogs, -
    • workflow systems, -
    • network management systems, -
    • NNTP gateways, -
    • vCard/profile management, -
    • and weblogs. -
    -

    -Another example is J-EAI. +news feeds and content syndication, +

  • avatar management, +
  • shared bookmarks, +
  • auction and trading systems, +
  • online catalogs, +
  • workflow systems, +
  • network management systems, +
  • NNTP gateways, +
  • vCard/profile management, +
  • and weblogs. + +
    • + +Another example is J-EAI. This is an XMPP-based Enterprise Application Integration (EAI) platform (also known as ESB, the Enterprise Service Bus). The J-EAI project builts upon -ejabberd's codebase and has contributed several features to mod_pubsub.

    Options: -

    +ejabberd's codebase and has contributed several features to mod_pubsub.
    +
    +Options: +
    -host
    This option defines the Jabber ID of the -service. If the host option is not specified, the Jabber ID will be the -hostname of the virtual host with the prefix `pubsub.'. The keyword "@HOST@" -is replaced at start time with the real virtual host name. + host
    This option defines the Jabber ID of the + service. If the host option is not specified, the Jabber ID will be the + hostname of the virtual host with the prefix `pubsub.'. The keyword "@HOST@" + is replaced at start time with the real virtual host name. -
    served_hosts
    To specify which hosts needs to -be served, you can use this option. If absent, only the main ejabberd -host is served.
    access_createnode
    -This option restricts which users are allowed to create pubsub nodes using -ACL and ACCESS. The default value is pubsub_createnode.

    Example: -

      {modules,
+
    served_hosts
     To specify which hosts needs to
+ be served, you can use this option. If absent, only the main ejabberd
+ host is served. 
    access_createnode
     
+ This option restricts which users are allowed to create pubsub nodes using
+ ACL and ACCESS. The default value is pubsub_createnode.
    +Example: +
    +  {modules,
    [
     ...
     {mod_pubsub, [{served_hosts, ["example.com",
@@ -2046,32 +2932,39 @@ ACL and ACCESS. The default value is pubsub_createnode. 
    Ex
                   {access_createnode, pubsub_createnode}]}
     ...
    ]}.
-
    -

    3.3.15  mod_register

    + + + +

    3.3.15  mod_register

    + -

    This module adds support for In-Band Registration (XEP-0077). This protocol + +This module adds support for In-Band Registration (XEP-0077). This protocol enables end users to use a Jabber client to: -

    + + +

    3.3.16  mod_roster

    + -

    This module implements roster management as defined in RFC 3921: XMPP IM.

    Options: -

    -iqdisc
    This specifies -the processing discipline for Roster Management (jabber:iq:roster) IQ queries (see section 3.3.2). -
    -

    3.3.17  mod_service_log

    + +This module implements roster management as defined in RFC 3921: XMPP IM.
    +
    +Options: +

    +iqdisc
    This specifies +the processing discipline for Roster Management (jabber:iq:roster) IQ queries (see section 3.3.2). +
    + + +

    3.3.17  mod_service_log

    + -

    This module adds support for logging end user packets via a Jabber message + +This module adds support for logging end user packets via a Jabber message auditing service such as Bandersnatch. All user packets are encapsulated in a <route/> element and sent to the specified -service(s).

    Options: -

    -loggers
    With this option a (list of) service(s) -that will receive the packets can be specified. -

    Examples: -

    + + +

    3.3.18  mod_shared_roster

    + -

    This module enables you to create shared roster groups. This means that you can + +This module enables you to create shared roster groups. This means that you can create groups of people that can see members from (other) groups in their rosters. The big advantages of this feature are that end users do not need to manually add all users to their rosters, and that they cannot permanently delete -users from the shared roster groups.

    Shared roster groups can be edited only via the web interface. Each group +users from the shared roster groups.
    +
    +Shared roster groups can be edited only via the web interface. Each group has a unique identification and the following parameters: -

    -Name
    The name of the group, which will be displayed in the roster. -
    Description
    The description of the group. This parameter does not affect -anything. -
    Members
    A list of full JIDs of group members, entered one per line in -the web interface. -
    Displayed groups
    A list of groups that will be in the rosters of this -group's members. -

    Examples: -

    + + +

    3.3.19  mod_stats

    + -

    This module adds support for Statistics Gathering (XEP-0039). This protocol + +This module adds support for Statistics Gathering (XEP-0039). This protocol allows you to retrieve next statistics from your ejabberd deployment: -

    +Options: +
    +iqdisc
    This specifies +the processing discipline for Statistics Gathering (http://jabber.org/protocol/stats) IQ queries (see section 3.3.2). +
    +As there are only a small amount of clients (for example Tkabber) and software libraries with support for this XEP, a few examples are given of the XML you need to send in order to get the statistics. Here they are: -

    + + +

    3.3.20  mod_time

    + -

    This module features support for Entity Time (XEP-0090). By using this XEP, -you are able to discover the time at another entity's location.

    Options: -

    -iqdisc
    This specifies -the processing discipline for Entity Time (jabber:iq:time) IQ queries (see section 3.3.2). -
    -

    3.3.21  mod_vcard

    + +This module features support for Entity Time (XEP-0090). By using this XEP, +you are able to discover the time at another entity's location.
    +
    +Options: +

    +iqdisc
    This specifies +the processing discipline for Entity Time (jabber:iq:time) IQ queries (see section 3.3.2). +
    + + +

    3.3.21  mod_vcard

    + -

    This module allows end users to store and retrieve their vCard, and to retrieve + +This module allows end users to store and retrieve their vCard, and to retrieve other users vCards, as defined in vcard-temp (XEP-0054). The module also implements an uncomplicated Jabber User Directory based on the vCards of -these users. Moreover, it enables the server to send its vCard when queried.

    Options: -

    +these users. Moreover, it enables the server to send its vCard when queried.
    +
    +Options: +
    -host
    This option defines the Jabber ID of the -service. If the host option is not specified, the Jabber ID will be the -hostname of the virtual host with the prefix `vjud.'. The keyword "@HOST@" -is replaced at start time with the real virtual host name. + host
    This option defines the Jabber ID of the + service. If the host option is not specified, the Jabber ID will be the + hostname of the virtual host with the prefix `vjud.'. The keyword "@HOST@" + is replaced at start time with the real virtual host name. -
    iqdisc
    This specifies -the processing discipline for vcard-temp IQ queries (see section 3.3.2). -
    search
    This option specifies whether the search -functionality is enabled (value: true) or disabled (value: -false). If disabled, the option host will be ignored and the -Jabber User Directory service will not appear in the Service Discovery item -list. The default value is true. -
    matches
    With this option, the number of reported -search results can be limited. If the option's value is set to infinity, -all search results are reported. The default value is 30. -
    allow_return_all
    This option enables -you to specify if search operations with empty input fields should return all -users who added some information to their vCard. The default value is -false. -
    search_all_hosts
    If this option is set -to true, search operations will apply to all virtual hosts. Otherwise -only the current host will be searched. The default value is true. -

    Examples: -

    • +
      iqdisc
      This specifies +the processing discipline for vcard-temp IQ queries (see section 3.3.2). +
      search
      This option specifies whether the search + functionality is enabled (value: true) or disabled (value: + false). If disabled, the option host will be ignored and the + Jabber User Directory service will not appear in the Service Discovery item + list. The default value is true. +
      matches
      With this option, the number of reported + search results can be limited. If the option's value is set to infinity, + all search results are reported. The default value is 30. +
      allow_return_all
      This option enables + you to specify if search operations with empty input fields should return all + users who added some information to their vCard. The default value is + false. +
      search_all_hosts
      If this option is set + to true, search operations will apply to all virtual hosts. Otherwise + only the current host will be searched. The default value is true. +
    +Examples: + -

    3.3.22  mod_vcard_ldap

    + + + +

    3.3.22  mod_vcard_ldap

    + -

    ejabberd can map LDAP attributes to vCard fields. This behaviour is + +ejabberd can map LDAP attributes to vCard fields. This behaviour is implemented in the mod_vcard_ldap module. This module does not depend on the -authentication method (see 3.2.5). The mod_vcard_ldap module has +authentication method (see 3.2.5). The mod_vcard_ldap module has its own optional parameters. The first group of parameters has the same meaning as the top-level LDAP parameters to set the authentication method: ldap_servers, ldap_port, ldap_rootdn, ldap_password, ldap_base, ldap_uids, and -ldap_filter. See section 3.2.5 for detailed information +ldap_filter. See section 3.2.5 for detailed information about these options. If one of these options is not set, ejabberd will look for the top-level option with the same name. The second group of parameters -consists of the following mod_vcard_ldap-specific options:

    +consists of the following mod_vcard_ldap-specific options: +
    -host
    This option defines the Jabber ID of the -service. If the host option is not specified, the Jabber ID will be the -hostname of the virtual host with the prefix `vjud.'. The keyword "@HOST@" -is replaced at start time with the real virtual host name. + host
    This option defines the Jabber ID of the + service. If the host option is not specified, the Jabber ID will be the + hostname of the virtual host with the prefix `vjud.'. The keyword "@HOST@" + is replaced at start time with the real virtual host name. -
    iqdisc
    This specifies -the processing discipline for vcard-temp IQ queries (see section 3.3.2). -
    search
    This option specifies whether the search -functionality is enabled (value: true) or disabled (value: -false). If disabled, the option host will be ignored and the -Jabber User Directory service will not appear in the Service Discovery item -list. The default value is true. -
    ldap_vcard_map
    With this option you can -set the table that maps LDAP attributes to vCard fields. The format is: -[Name_of_vCard_field, Pattern, List_of_LDAP_attributes, ...]. -Name_of_vcard_field is the type name of the vCard as defined in -RFC 2426. Pattern is a -string which contains pattern variables "%u", "%d" or -"%s". List_of_LDAP_attributes is the list containing LDAP -attributes. The pattern variables "%s" will be sequentially replaced -with the values of LDAP attributes from List_of_LDAP_attributes, -"%u" will be replaced with the user part of a JID, and "%d" -will be replaced with the domain part of a JID. The default is: -
      [{"NICKNAME", "%u", []},
+
    iqdisc
     This specifies 
+the processing discipline for vcard-temp IQ queries (see section 3.3.2).
+
    search
    This option specifies whether the search
+ functionality is enabled (value: true) or disabled (value:
+ false). If disabled, the option host will be ignored and the
+ Jabber User Directory service will not appear in the Service Discovery item
+ list. The default value is true.
+
    ldap_vcard_map
    With this option you can
+ set the table that maps LDAP attributes to vCard fields. The format is:
+ [Name_of_vCard_field, Pattern, List_of_LDAP_attributes, ...].
+ Name_of_vcard_field is the type name of the vCard as defined in
+ RFC 2426. Pattern is a
+ string which contains pattern variables "%u", "%d" or
+ "%s". List_of_LDAP_attributes is the list containing LDAP
+ attributes. The pattern variables "%s" will be sequentially replaced
+ with the values of LDAP attributes from List_of_LDAP_attributes,
+ "%u" will be replaced with the user part of a JID, and "%d"
+ will be replaced with the domain part of a JID. The default is:
+ 
    +  [{"NICK", "%u", []},
    {"FN", "%s", ["displayName"]},
-   {"FAMILY", "%s", ["sn"]},
-   {"GIVEN", "%s", ["givenName"]},
+   {"LAST", "%s", ["sn"]},
+   {"FIRST", "%s", ["givenName"]},
    {"MIDDLE", "%s", ["initials"]},
    {"ORGNAME", "%s", ["o"]},
    {"ORGUNIT", "%s", ["ou"]},
@@ -2370,13 +3366,14 @@ will be replaced with the domain part of a JID. The default is:
    {"BDAY", "%s", ["birthDay"]},
    {"ROLE", "%s", ["employeeType"]},
    {"PHOTO", "%s", ["jpegPhoto"]}]
-
    ldap_search_fields
    This option
-defines the search form and the LDAP attributes to search within. The format
-is: [Name, Attribute, ...]. Name is the name of a search form
-field which will be automatically translated by using the translation
-files (see msgs/*.msg for available words). Attribute is the
-LDAP attribute or the pattern "%u". The default is:
-
      [{"User", "%u"},
+
    ldap_search_fields
    This option
+ defines the search form and the LDAP attributes to search within. The format
+ is: [Name, Attribute, ...]. Name is the name of a search form
+ field which will be automatically translated by using the translation
+ files (see msgs/*.msg for available words). Attribute is the
+ LDAP attribute or the pattern "%u". The default is:
+ 
    +  [{"User", "%u"},
    {"Full Name", "displayName"},
    {"Given Name", "givenName"},
    {"Middle Name", "initials"},
@@ -2388,40 +3385,49 @@ LDAP attribute or the pattern "%u". The default is:
    {"Email", "mail"},
    {"Organization Name", "o"},
    {"Organization Unit", "ou"}]
-
    ldap_search_reported
    This option
-defines which search fields should be reported. The format is:
-[Name, vCard_Name, ...]. Name is the name of a search form
-field which will be automatically translated by using the translation
-files (see msgs/*.msg for available words). vCard_Name is the
-vCard field name defined in the ldap_vcard_map option. The default
-is:
-
      [{"Full Name", "FN"},
-   {"Given Name", "GIVEN"},
+
    ldap_search_reported
    This option
+ defines which search fields should be reported. The format is:
+ [Name, vCard_Name, ...]. Name is the name of a search form
+ field which will be automatically translated by using the translation
+ files (see msgs/*.msg for available words). vCard_Name is the
+ vCard field name defined in the ldap_vcard_map option. The default
+ is:
+
    +  [{"Full Name", "FN"},
+   {"Given Name", "FIRST"},
    {"Middle Name", "MIDDLE"},
-   {"Family Name", "FAMILY"},
-   {"Nickname", "NICKNAME"},
+   {"Family Name", "LAST"},
+   {"Nickname", "NICK"},
    {"Birthday", "BDAY"},
    {"Country", "CTRY"},
    {"City", "LOCALITY"},
    {"Email", "EMAIL"},
    {"Organization Name", "ORGNAME"},
    {"Organization Unit", "ORGUNIT"}]
-

    Examples: -

    • -

      Let's say ldap.example.org is the name of our LDAP server. We have +

    +Examples: + -

    3.3.23  mod_version

    + + + +

    3.3.23  mod_version

    + -

    This module implements Software Version (XEP-0092). Consequently, it -answers ejabberd's version when queried.

    Options: -

    -show_os
    Should the operating system be revealed or not. -The default value is true. -
    iqdisc
    This specifies -the processing discipline for Software Version (jabber:iq:version) IQ queries (see section 3.3.2). -
    -

    Chapter 4  Managing an ejabberd server

    -

    4.1  Online Configuration and Monitoring

    -

    -

    4.1.1  Web Interface

    + +This module implements Software Version (XEP-0092). Consequently, it +answers ejabberd's version when queried.
    +
    +Options: +

    +show_os
    Should the operating system be revealed or not. + The default value is true. +
    iqdisc
    This specifies +the processing discipline for Software Version (jabber:iq:version) IQ queries (see section 3.3.2). +
    + + +

    Chapter 4  Managing an ejabberd server

    + + + +

    4.1  Online Configuration and Monitoring

    + + + + +

    4.1.1  Web Interface

    + -

    To perform online configuration of ejabberd you need to enable the + +To perform online configuration of ejabberd you need to enable the ejabberd_http listener with the option web_admin (see -section 3.1.3). Then you can open +section 3.1.3). Then you can open http://server:port/admin/ in your favourite web browser. You will be asked to enter the username (the full Jabber ID) and password of an ejabberd user with administrator rights. After authentication -you will see a page similar to figure 4.1.

    +you will see a page similar to figure 4.1. +
    + + webadmmain.png + -webadmmain.png +
    +
    +
    Figure 4.1: Top page from the web interface

    +
    - -
    -
    Figure 4.1: Top page from the web interface
    - -

    + +

    Here you can edit access restrictions, manage users, create backups, manage the database, enable/disable ports listened for, view server -statistics,…

    Examples: -

    + + +

    4.1.2  ejabberdctl

    + -

    It is possible to do some administration operations using the command -line tool ejabberdctl. You can list all available options by -running ejabberdctl without arguments: -

    % ejabberdctl
-Usage: ejabberdctl node command
+The ejabberdctl command line script allows to start, stop and perform 
+many other administrative tasks in a local or remote ejabberd server.
    
+
    
+When ejabberdctl is executed without any parameter,
+it displays the available options. If there isn't an ejabberd server running, 
+the available parameters are:
+
    
+start
     Start ejabberd in background mode. This is the default method.
+
    debug
     Attach an Erlang shell to an already existing ejabberd server. This allows to execute commands interactively in the ejabberd server.
+
    live
     Start ejabberd in live mode: the shell keeps attached to the started server, showing log messages and allowing to execute interactive commands.
+
    
+If there is an ejabberd server running in the system,
+ejabberdctl shows all the available commands in that server.
+The more interesting ones are:
+
    
+status
     Check the status of the ejabberd server.
+
    stop
     Stop the ejabberd server which is running in the machine.
+
    reopen-log
     If you use a tool to rotate logs, you have to configure it
+ so that this command is executed after each rotation.
+
    backup, restore, install-fallback, dump, load
     You can use these
+ commands to create and restore backups. 
+
    import-file, import-dir
     
+ These options can be used to migrate from other Jabber/XMPP servers. There
+ exist tutorials to migrate from other software to ejabberd.
+
    delete-expired-messages
     This option can be used to delete old messages
+ in offline storage. This might be useful when the number of offline messages
+ is very high.
+
    
+The ejabberdctl script also allows the argument –node NODENAME.
+This allows to administer a remote node.
    
+
    
+The ejabberdctl administration script can be configured in the file ejabberdctl.cfg.
+This file provides detailed information about each configurable option.
    
+
    
+
 
-Available commands:
-  status                        get ejabberd status
-  stop                          stop ejabberd
-  restart                       restart ejabberd
-  reopen-log                    reopen log file
-  register user server password register a user
-  unregister user server        unregister a user
-  backup file                   store a database backup to file
-  restore file                  restore a database backup from file
-  install-fallback file         install a database fallback from file
-  dump file                     dump a database to a text file
-  load file                     restore a database from a text file
-  import-file file              import user data from jabberd 1.4 spool file
-  import-dir dir                import user data from jabberd 1.4 spool directory
-  registered-users              list all registered users
-  delete-expired-messages       delete expired offline messages from database
+
    Chapter 5  Securing ejabberd
    
+
+
+
+
    5.1  Firewall Settings
    
 
-Example:
-  ejabberdctl ejabberd@host restart
-

    Additional information: -

    -reopen-log
    If you use a tool to rotate logs, you have to configure it -so that this command is executed after each rotation. -
    backup, restore, install-fallback, dump, load
    You can use these -commands to create and restore backups. -
    import-file, import-dir
    -These options can be used to migrate from other Jabber/XMPP servers. There -exist tutorials to migrate from other software to ejabberd. -
    delete-expired-messages
    This option can be used to delete old messages -in offline storage. This might be useful when the number of offline messages -is very high. -
    -

    Chapter 5  Securing ejabberd

    -

    5.1  Firewall Settings

    -

    You need to take the following TCP ports in mind when configuring your firewall: -

    - - - - - - -
    PortDescription
    5222SASL and unencrypted c2s connections.
    5223Obsolete SSL c2s connections.
    5269s2s connections.
    4369Only for clustering (see 7).
    port rangeOnly for clustring (see 7). This range -is configurable (see 2.4.4).
    -
    -

    Chapter 6  Integrating ejabberd with other Instant Messaging servers

    -

    6.1  SRV Records

    + +You need to take the following TCP ports in mind when configuring your firewall: +

    + + + + + + + + + + + + + + + + + + +
    PortDescription
    5222SASL and unencrypted c2s connections.
    5223Obsolete SSL c2s connections.
    5269s2s connections.
    4369Only for clustering (see 7).
    port rangeOnly for clustring (see 7). This range + is configurable (see 2.4.5).
    +
    + + +

    Chapter 6  Integrating ejabberd with other Instant Messaging servers

    + + + +

    6.1  SRV Records

    + -

    + + +

    Chapter 7  Clustering

    + -

    -

    7.1  How it Works

    + + + +

    7.1  How it Works

    + -

    A Jabber domain is served by one or more ejabberd nodes. These nodes can + +A Jabber domain is served by one or more ejabberd nodes. These nodes can be run on different machines that are connected via a network. They all must have the ability to connect to port 4369 of all another nodes, and must have the same magic cookie (see Erlang/OTP documentation, in other words the file ~ejabberd/.erlang.cookie must be the same on all nodes). This is needed because all nodes exchange information about connected users, s2s -connections, registered services, etc…

    Each ejabberd node has the following modules: -

    + + +

    7.1.1  Router

    + -

    This module is the main router of Jabber packets on each node. It + +This module is the main router of Jabber packets on each node. It routes them based on their destination's domains. It uses a global routing table. The domain of the packet's destination is searched in the routing table, and if it is found, the packet is routed to the -appropriate process. If not, it is sent to the s2s manager.

    -

    7.1.2  Local Router

    +appropriate process. If not, it is sent to the s2s manager.
    +
    + + +

    7.1.2  Local Router

    + -

    This module routes packets which have a destination domain equal to + +This module routes packets which have a destination domain equal to one of this server's host names. If the destination JID has a non-empty user part, it is routed to the session manager, otherwise it is processed depending -on its content.

    -

    7.1.3  Session Manager

    +on its content.
    +
    + + +

    7.1.3  Session Manager

    + -

    This module routes packets to local users. It looks up to which user + +This module routes packets to local users. It looks up to which user resource a packet must be sent via a presence table. Then the packet is either routed to the appropriate c2s process, or stored in offline -storage, or bounced back.

    -

    7.1.4  s2s Manager

    +storage, or bounced back.
    +
    + + +

    7.1.4  s2s Manager

    + -

    This module routes packets to other Jabber servers. First, it + +This module routes packets to other Jabber servers. First, it checks if an opened s2s connection from the domain of the packet's source to the domain of the packet's destination exists. If that is the case, the s2s manager routes the packet to the process -serving this connection, otherwise a new connection is opened.

    -

    7.2  Clustering Setup

    +serving this connection, otherwise a new connection is opened.
    +
    + + +

    7.2  Clustering Setup

    + -

    Suppose you already configured ejabberd on one machine named (first), + +Suppose you already configured ejabberd on one machine named (first), and you need to setup another one to make an ejabberd cluster. Then do -following steps:

    1. +following steps: +
      1. Copy ~ejabberd/.erlang.cookie file from first to -second.

        (alt) You can also add `-cookie content_of_.erlang.cookie' -option to all `erl' commands below.

      2. On second run the following command as the ejabberd daemon user, -in the working directory of ejabberd:
        erl -sname ejabberd \
+ second.
        
+
        
+(alt) You can also add `-cookie content_of_.erlang.cookie'
+ option to all `erl' commands below.
        
+
        
+
      3. On second run the following command as the ejabberd daemon user,
+ in the working directory of ejabberd:
+
        +erl -sname ejabberd \
     -mnesia extra_db_nodes "['ejabberd@first']" \
     -s mnesia
-
        This will start Mnesia serving the same database as ejabberd@first.
-You can check this by running the command `mnesia:info().'. You
-should see a lot of remote tables and a line like the following:
        running db nodes   = [ejabberd@first, ejabberd@second]
-
      4. Now run the following in the same `erl' session:
        mnesia:change_table_copy_type(schema, node(), disc_copies).
-
        This will create local disc storage for the database.
        (alt) Change storage type of the scheme table to `RAM and disc
-copy' on the second node via the web interface.
      5. Now you can add replicas of various tables to this node with
-`mnesia:add_table_copy' or
-`mnesia:change_table_copy_type' as above (just replace
-`schema' with another table name and `disc_copies'
-can be replaced with `ram_copies' or
-`disc_only_copies').
        Which tables to replicate is very dependant on your needs, you can get
-some hints from the command `mnesia:info().', by looking at the
-size of tables and the default storage type for each table on 'first'.
        Replicating a table makes lookups in this table faster on this node.
-Writing, on the other hand, will be slower. And of course if machine with one
-of the replicas is down, other replicas will be used.
        Also section 5.3 (Table Fragmentation) of Mnesia User's Guide can be helpful.
-
        (alt) Same as in previous item, but for other tables.
      6. Run `init:stop().' or just `q().' to exit from
-the Erlang shell. This probably can take some time if Mnesia has not yet
-transfered and processed all data it needed from first.
      7. Now run ejabberd on second with almost the same config as
-on first (you probably do not need to duplicate `acl'
-and `access' options — they will be taken from
-first, and mod_muc and mod_irc should be
-enabled only on one machine in the cluster).
-

      You can repeat these steps for other machines supposed to serve this -domain.

      -

      7.3  Service Load-Balancing

      -

      7.3.1  Components Load-Balancing

      + + This will start Mnesia serving the same database as ejabberd@first. + You can check this by running the command `mnesia:info().'. You + should see a lot of remote tables and a line like the following: +

      +running db nodes   = [ejabberd@first, ejabberd@second]
+

      +
      +
    2. Now run the following in the same `erl' session: +
      +mnesia:change_table_copy_type(schema, node(), disc_copies).
+
      + This will create local disc storage for the database.
      +
      +(alt) Change storage type of the scheme table to `RAM and disc + copy' on the second node via the web interface.
      +
      +
    3. Now you can add replicas of various tables to this node with + `mnesia:add_table_copy' or + `mnesia:change_table_copy_type' as above (just replace + `schema' with another table name and `disc_copies' + can be replaced with `ram_copies' or + `disc_only_copies').
      +
      +Which tables to replicate is very dependant on your needs, you can get + some hints from the command `mnesia:info().', by looking at the + size of tables and the default storage type for each table on 'first'.
      +
      +Replicating a table makes lookups in this table faster on this node. + Writing, on the other hand, will be slower. And of course if machine with one + of the replicas is down, other replicas will be used.
      +
      +Also section 5.3 (Table Fragmentation) of Mnesia User's Guide can be helpful. +
      +
      + (alt) Same as in previous item, but for other tables.
      +
      +
    4. Run `init:stop().' or just `q().' to exit from + the Erlang shell. This probably can take some time if Mnesia has not yet + transfered and processed all data it needed from first.
      +
      +
    5. Now run ejabberd on second with almost the same config as + on first (you probably do not need to duplicate `acl' + and `access' options — they will be taken from + first, and mod_muc and mod_irc should be + enabled only on one machine in the cluster). +
    +You can repeat these steps for other machines supposed to serve this +domain.
    +
    + + +

    7.3  Service Load-Balancing

    + + + +

    7.3.1  Components Load-Balancing

    + -

    -

    7.3.2  Domain Load-Balancing Algorithm

    + + + +

    7.3.2  Domain Load-Balancing Algorithm

    + -

    ejabberd includes an algorithm to load balance the components that are plugged on an ejabberd cluster. It means that you can plug one or several instances of the same component on each ejabberd cluster and that the traffic will be automatically distributed.

    The default distribution algorithm try to deliver to a local instance of a component. If several local instances are available, one instance is choosen randomly. If no instance is available locally, one instance is choosen randomly among the remote component instances.

    If you need a different behaviour, you can change the load balancing behaviour with the option domain_balancing. The syntax of the option is the following:

     {domain_balancing, "component.example.com", <balancing_criterium>}.                                   
-

    Several balancing criteria are available: -

    +If the value corresponding to the criteria is the same, the same component instance in the cluster will be used.
    +
    + + +

    7.3.3  Load-Balancing Buckets

    + -

    When there is a risk of failure for a given component, domain balancing can cause service trouble. If one component is failling the service will not work correctly unless the sessions are rebalanced.

    In this case, it is best to limit the problem to the sessions handled by the failling component. This is what the domain_balancing_component_number option does, making the load balancing algorithm not dynamic, but sticky on a fix number of component instances.

    The syntax is the following: -

        {domain_balancing_component_number, "component.example.com", N}
-
    -

    Chapter 8  Debugging

    + +When there is a risk of failure for a given component, domain balancing can cause service trouble. If one component is failing the service will not work correctly unless the sessions are rebalanced.
    +
    +In this case, it is best to limit the problem to the sessions handled by the failing component. This is what the domain_balancing_component_number option does, making the load balancing algorithm not dynamic, but sticky on a fix number of component instances.
    +
    +The syntax is the following: +

    +    {domain_balancing_component_number, "component.example.com", N}
+
    + + +

    Chapter 8  Debugging

    + -

    -

    8.1  Watchdog alerts

    + + + +

    8.1  Watchdog alerts

    + -

    ejabberd includes a watchdog mechanism to notify admins in realtime -through XMPP when any process consumes too much memory.

    To enable the watchdog, add the watchdog_admins - option in the config file:

    {watchdog_admins, [``admin@localhost'']}.
-
    -

    Appendix A  Internationalization and Localization

    + +ejabberd includes a watchdog mechanism to notify administrators in realtime +through XMPP when any process consumes too much memory.
    +
    +To enable the watchdog, add the watchdog_admins + option in the config file: +

    +{watchdog_admins, [``admin@localhost'']}.
+
    + + + +

    Appendix A  Internationalization and Localization

    + -

    All built-in modules support the xml:lang attribute inside IQ queries. -Figure A.1, for example, shows the reply to the following query: -

      <iq id='5'
+
+All built-in modules support the xml:lang attribute inside IQ queries.
+Figure A.1, for example, shows the reply to the following query:
+
    +  <iq id='5'
       to='example.org'
       type='get'
       xml:lang='ru'>
     <query xmlns='http://jabber.org/protocol/disco#items'/>
   </iq>
-
    
+
    +
    + + discorus.png + -discorus.png +
    +
    +
    Figure A.1: Service Discovery when xml:lang='ru'

    +
    + +
    +The web interface also supports the Accept-Language HTTP header (compare +figure A.2 with figure 4.1) +
    + + webadmmainru.png + -
    -
    Figure A.1: Service Discovery when xml:lang='ru'
    - -

    The web interface also supports the Accept-Language HTTP header (compare -figure A.2 with figure 4.1)

    +
    +
    +
    Figure A.2: Top page from the web interface with HTTP header + `Accept-Language: ru'

    +
    -webadmmainru.png + +
    + +

    Appendix B  Release Notes

    -
    -
    Figure A.2: Top page from the web interface with HTTP header -`Accept-Language: ru'
    - -
    -

    Appendix B  Release Notes

    -

    Release notes are available from ejabberd Home Page

    -

    Appendix C  Acknowledgements

    + +Release notes are available from ejabberd Home Page
    +
    + + +

    Appendix C  Acknowledgements

    + Thanks to all people who contributed to this guide: -

    + + +

    Appendix D  Copyright Information

    + + +Ejabberd Installation and Operation Guide.
    +Copyright © 2003 — 2007 Process-one
    +
    +This document is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 -of the License, or (at your option) any later version.

    This document is distributed in the hope that it will be useful, +of the License, or (at your option) any later version.
    +
    +This document is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along with +GNU General Public License for more details.
    +
    +You should have received a copy of the GNU General Public License along with this document; if not, write to the Free Software Foundation, Inc., 51 Franklin -Street, Fifth Floor, Boston, MA 02110-1301, USA.

    +Street, Fifth Floor, Boston, MA 02110-1301, USA.
    +
    This document was translated from LATEX by -HEVEA.
    +HEVEA. diff --git a/doc/version.tex b/doc/version.tex index d40696494..769e0bf57 100644 --- a/doc/version.tex +++ b/doc/version.tex @@ -1,3 +1,2 @@ % ejabberd version (automatically generated). - -ewcommand{ ersion}{2.0.0b1} +\newcommand{\version}{2.0.0b1}