Integrate join/leave cluster as ejabberd command
This commit is contained in:
Christophe Romain
parent
a497cdff5e
commit
67a70b9107
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@ -180,8 +180,6 @@ install: all copy-files
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# Binary C programs
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$(INSTALL) -d $(PBINDIR)
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$(INSTALL) -m 750 $(O_USER) tools/captcha.sh $(PBINDIR)
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$(INSTALL) -m 750 $(O_USER) tools/joincluster $(PBINDIR)
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$(INSTALL) -m 750 $(O_USER) tools/leavecluster $(PBINDIR)
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#
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# Copy lite.sql
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[ -d deps/sqlite3 ] && $(INSTALL) -d $(SQLDIR) || true
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@ -431,16 +431,6 @@ check_start()
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}
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}
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# cluster setup
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join_cluster()
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{
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$EXEC_CMD "$EJABBERD_BIN_PATH/joincluster $*"
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}
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leave_cluster()
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{
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$EXEC_CMD "$EJABBERD_BIN_PATH/leavecluster $*"
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}
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# allow sync calls
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wait_for_status()
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{
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@ -472,7 +462,5 @@ case $ARGS in
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' etop') etop;;
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' started') wait_for_status 0 30 2;; # wait 30x2s before timeout
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' stopped') wait_for_status 3 15 2 && stop_epmd;; # wait 15x2s before timeout
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' join_cluster'*) join_cluster ${ARGS# join_cluster};;
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' leave_cluster'*) leave_cluster ${ARGS# leave_cluster};;
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*) ctl $ARGS;;
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esac
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@ -33,6 +33,8 @@
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stop_kindly/2, send_service_message_all_mucs/2,
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registered_vhosts/0,
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reload_config/0,
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%% Cluster
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join_cluster/1, leave_cluster/1, list_cluster/0,
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%% Erlang
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update_list/0, update/1,
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%% Accounts
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@ -146,6 +148,22 @@ commands() ->
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args = [],
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result = {res, rescode}},
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#ejabberd_commands{name = join_cluster, tags = [cluster],
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desc = "Join this node into the cluster handled by Node",
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module = ?MODULE, function = join_cluster,
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args = [{node, binary}],
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result = {res, rescode}},
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#ejabberd_commands{name = leave_cluster, tags = [cluster],
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desc = "Remove node handled by Node from the cluster",
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module = ?MODULE, function = leave_cluster,
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args = [{node, binary}],
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result = {res, rescode}},
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#ejabberd_commands{name = list_cluster, tags = [cluster],
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desc = "List nodes that are part of the cluster handled by Node",
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module = ?MODULE, function = list_cluster,
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args = [],
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result = {nodes, {list, {node, atom}}}},
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#ejabberd_commands{name = import_file, tags = [mnesia],
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desc = "Import user data from jabberd14 spool file",
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module = ?MODULE, function = import_file,
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@ -373,6 +391,19 @@ reload_config() ->
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acl:start(),
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shaper:start().
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%%%
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%%% Cluster management
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%%%
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join_cluster(NodeBin) ->
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ejabberd_cluster:join(list_to_atom(binary_to_list(NodeBin))).
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leave_cluster(NodeBin) ->
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ejabberd_cluster:leave(list_to_atom(binary_to_list(NodeBin))).
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list_cluster() ->
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ejabberd_cluster:get_nodes().
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%%%
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%%% Migration management
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%%%
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@ -27,6 +27,7 @@
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%% API
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-export([get_nodes/0, call/4, multicall/3, multicall/4]).
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-export([join/1, leave/1]).
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-include("ejabberd.hrl").
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-include("logger.hrl").
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@ -51,3 +52,53 @@ multicall(Module, Function, Args) ->
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multicall(Nodes, Module, Function, Args) ->
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rpc:multicall(Nodes, Module, Function, Args, 5000).
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-spec join(node()) -> ok | {error, any()}.
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join(Node) ->
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case {node(), net_adm:ping(Node)} of
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{Node, _} ->
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{error, {not_master, Node}};
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{_, pong} ->
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application:stop(ejabberd),
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application:stop(mnesia),
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mnesia:delete_schema([node()]),
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application:start(mnesia),
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mnesia:change_config(extra_db_nodes, [Node]),
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mnesia:change_table_copy_type(schema, node(), disc_copies),
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spawn(fun() ->
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lists:foreach(fun(Table) ->
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Type = call(Node, mnesia, table_info, [Table, storage_type]),
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mnesia:add_table_copy(Table, node(), Type)
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end, mnesia:system_info(tables)--[schema])
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end),
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application:start(ejabberd);
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_ ->
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{error, {no_ping, Node}}
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end.
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-spec leave(node()) -> ok | {error, any()}.
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leave(Node) ->
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case {node(), net_adm:ping(Node)} of
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{Node, _} ->
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Cluster = get_nodes()--[Node],
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leave(Cluster, Node);
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{_, pong} ->
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rpc:call(Node, ?MODULE, leave, [Node], 10000);
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{_, pang} ->
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case mnesia:del_table_copy(schema, Node) of
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{atomic, ok} -> ok;
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{aborted, Reason} -> {error, Reason}
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end
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end.
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leave([], Node) ->
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{error, {no_cluster, Node}};
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leave([Master|_], Node) ->
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application:stop(ejabberd),
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application:stop(mnesia),
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call(Master, mnesia, del_table_copy, [schema, Node]),
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spawn(fun() ->
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mnesia:delete_schema([node()]),
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erlang:halt(0)
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end),
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ok.
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@ -1,153 +0,0 @@
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#!/bin/sh
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# Add the current ejabberd node in a cluster
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# copyright (c) 2010-2015 ProcessOne
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# Return Code:
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# 0 : groovy baby
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# 10 : ejabberdctl not found
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# 11 : erl not found
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# 12 : erlc not found
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# 20 : database dir can not be created
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# 21 : database dir not writable
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# 22 : temporary dir can not be created
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# 30 : network issue
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# 31 : node names incompatibility
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error()
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{
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echo "Error: $1" >&2
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exit $2
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}
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[ -z $NO_WARNINGS ] && {
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echo "--------------------------------------------------------------------"
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echo ""
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echo "ejabberd cluster configuration"
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echo ""
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echo "This ejabberd node will be configured for use in an ejabberd cluster."
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echo "IMPORTANT: all local data from the database will be lost, and"
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echo "cluster database will be initialized. All data from the master"
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echo "node will be replicated to this one."
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echo ""
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echo "--------------------------------------------------------------------"
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echo "Press any key to continue, or Ctrl+C to stop now"
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read foo
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echo ""
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}
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[ $# -eq 0 ] && {
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echo "Make sure you have a running remote master ejabberd node"
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echo "Before continuing, you must copy the ~/.erlang.cookie file from"
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echo "remote master node and check ejabberd.cfg compatibility."
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echo "e.g. hosts definition must match on all nodes"
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echo ""
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echo "The remote master node name is defined as ERLANG_NODE into"
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echo "ejabberdctl.cfg on that remote node."
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echo ""
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echo -n "Remote master node name: "
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read REMOTE
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echo ""
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} || {
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echo "Using passed parameter for remote master node name: $1"
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REMOTE=$1
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}
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PA=/tmp/clustersetup_$$
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CTL=$(which ejabberdctl)
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[ -x "$CTL" ] || {
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HERE=`which "$0"`
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BASE=`dirname $HERE`/..
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ROOTDIR=`cd $BASE; pwd`
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PATH=$ROOTDIR/bin:$PATH
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PA=$ROOTDIR/clustersetup_$$
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CTL=$(which ejabberdctl)
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}
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echo "Using commands:"
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[ -x "$CTL" ] && echo $CTL || error "can't find ejabberdctl" 10
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exec $CTL stop 2>/dev/null >/dev/null
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ERLC=${ERL}c
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[ -x $ERL ] && echo $ERL || error "can't find erl" 11
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[ -x $ERLC ] && echo $ERLC || error "can't find erlc" 12
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echo ""
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NAME=-name
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[ "$ERLANG_NODE" = "${ERLANG_NODE%.*}" ] && NAME=-sname
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CLUSTERSETUP=clustersetup
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CLUSTERSETUP_ERL=$PA/$CLUSTERSETUP.erl
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REMOTENAME=-name
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[ "$REMOTE" = "${REMOTE%.*}" ] && REMOTENAME=-sname
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[ "$REMOTENAME" = "$NAME" ] || {
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echo "IMPORTANT!: node names are incompatible"
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echo "Remote node name is $REMOTE"
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echo "Local node name is $ERLANG_NODE"
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echo ""
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echo "Both node names must be short or fqdn names."
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echo "Using short and fqdn names is impossible."
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echo ""
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error "incompatible node names" 31
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}
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set -o errexit
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set -o nounset
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[ -d $SPOOL_DIR ] && rm -Rf $SPOOL_DIR/* || mkdir -p $SPOOL_DIR || error "$SPOOL_DIR cannot be created" 20
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[ -w $SPOOL_DIR ] || error "$SPOOL_DIR directory is not writable" 21
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mkdir -p $PA || error "$PA cannot be created" 22
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cd $PA
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cat <<EOF > $CLUSTERSETUP_ERL
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-module($CLUSTERSETUP).
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-export([start/0]).
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set_table_copy(Table, _Node, {badrpc, Reason}) ->
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io:format("Error: cannot get storage type for table ~p on node $REMOTE:~n ~p~n",[Table, Reason]);
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set_table_copy(Table, Node, Type) ->
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io:format("setting table ~p to mode ~p~n",[Table, Type]),
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case mnesia:add_table_copy(Table, Node, Type) of
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{aborted, _} ->
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mnesia:change_table_copy_type(Table, Node, Type);
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_ ->
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ok
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end.
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set_tables({badrpc, Reason}) ->
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io:format("ERROR: cannot get tables list on $REMOTE : ~p~n",[Reason]);
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set_tables([]) ->
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ok;
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set_tables([schema | Tables]) ->
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set_tables(Tables);
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set_tables([s2s | Tables]) ->
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set_tables(Tables);
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set_tables([session | Tables]) ->
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set_tables(Tables);
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set_tables([Table | Tables]) ->
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set_table_copy(Table, node(),
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rpc:call('$REMOTE', mnesia, table_info, [Table, storage_type])),
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set_tables(Tables).
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start() ->
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io:format("~n",[]),
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R = case net_adm:ping('$REMOTE') of
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pong ->
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set_table_copy(schema, node(), disc_copies),
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set_tables(rpc:call('$REMOTE', mnesia, system_info, [tables])),
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0;
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pang ->
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io:format("node ~p is not reachable, please check epmd port, and FIREWALL_WINDOW ports~n", ['$REMOTE']),
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1
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end,
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halt(R).
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EOF
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$ERLC -o $PA $CLUSTERSETUP_ERL
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$ERL $NAME $ERLANG_NODE -pa $PA $KERNEL_OPTS -mnesia extra_db_nodes "['$REMOTE']" dir "\"$SPOOL_DIR\"" -s mnesia -s $CLUSTERSETUP start
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cd -
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rm -Rf $PA
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echo "End."
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echo "Check that there is no error in the above messages."
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@ -1,109 +0,0 @@
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#!/bin/sh
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# Remove the current ejabberd node in a cluster
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# copyright (c) 2010-2015 ProcessOne
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# Return Code:
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# 0 : groovy baby
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# 10 : ejabberdctl not found
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# 11 : erl not found
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# 12 : erlc not found
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# 22 : temporary dir can not be created
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error()
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{
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echo "Error: $1" >&2
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exit $2
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}
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[ -z $NO_WARNINGS ] && {
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echo "--------------------------------------------------------------------"
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echo ""
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echo "ejabberd cluster configuration"
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echo ""
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echo "This ejabberd node will be removed from the cluster."
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echo "IMPORTANT: this node will be stopped. At least one other clustered"
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echo "node must be running."
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echo ""
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echo "--------------------------------------------------------------------"
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echo "Press any key to continue, or Ctrl+C to stop now"
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read foo
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echo ""
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}
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PA=/tmp/clustersetup_$$
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CTL=$(which ejabberdctl)
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[ -x "$CTL" ] || {
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HERE=`which "$0"`
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BASE=`dirname $HERE`/..
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ROOTDIR=`cd $BASE; pwd`
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PATH=$ROOTDIR/bin:$PATH
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PA=$ROOTDIR/clustersetup_$$
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CTL=$(which ejabberdctl)
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}
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echo "Using commands:"
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[ -x "$CTL" ] && echo $CTL || error "can't find ejabberdctl" 10
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exec $CTL stop 2>/dev/null >/dev/null
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ERLC=${ERL}c
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[ -x $ERL ] && echo $ERL || error "can't find erl" 11
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[ -x $ERLC ] && echo $ERLC || error "can't find erlc" 12
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echo ""
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$CTL stopped
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CLUSTERSETUP=clustersetup
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CLUSTERSETUP_ERL=$PA/$CLUSTERSETUP.erl
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set -o errexit
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set -o nounset
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mkdir -p $PA || error "$PA cannot be created" 22
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cd $PA
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cat <<EOF > $CLUSTERSETUP_ERL
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-module($CLUSTERSETUP).
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-export([start/0]).
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del_table_copy(Table, Node) ->
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case mnesia:del_table_copy(Table, Node) of
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{aborted, Reason} -> io:format("Error: can not remove ~p table: ~p~n", [Table, Reason]);
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_ -> io:format("table ~p removed from cluster~n", [Table])
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end.
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del_tables([],_) ->
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ok;
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del_tables([schema | Tables], Node) ->
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del_tables(Tables, Node);
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del_tables([Table | Tables], Node) ->
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del_table_copy(Table, Node),
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del_tables(Tables, Node).
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start() ->
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io:format("~n",[]),
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Removed = node(),
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case mnesia:system_info(running_db_nodes)--[Removed] of
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[] -> io:format("Error: no other node running in the cluster~n");
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Nodes ->
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del_tables(mnesia:system_info(local_tables), Removed),
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mnesia:stop(),
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case rpc:call(hd(Nodes), mnesia, del_table_copy, [schema, Removed]) of
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{badrpc,Reason} -> io:format("Error: can not unregister node ~p from cluster: ~p~n", [Removed, Reason]);
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{aborted,Reason} -> io:format("Error: can not unregister node ~p from cluster: ~p~n", [Removed, Reason]);
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{atomic, ok} ->
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mnesia:delete_schema([Removed]),
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io:format("node ~p removed from cluster~n", [Removed])
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end
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end,
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halt(0).
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EOF
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$ERLC -o $PA $CLUSTERSETUP_ERL
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$ERL $NAME $ERLANG_NODE -pa $PA $KERNEL_OPTS -mnesia dir "\"$SPOOL_DIR\"" -s mnesia -s $CLUSTERSETUP start
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cd -
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rm -Rf $PA
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echo "End."
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echo "Check that there is no error in the above messages."
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