mirror of
https://github.com/processone/ejabberd.git
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94 lines
2.6 KiB
Plaintext
94 lines
2.6 KiB
Plaintext
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#!/bin/bash
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# Remove the current ejabberd node in a cluster
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# Return Code:
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# 0 : groovy baby
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# 11 : erl not found
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# 12 : erlc not found
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# 20 : database dir doesn't exist
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# 21 : database dir not writable
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# 21 : database dir variable not set
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function 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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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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HERE=`which "$0"`
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BASE=`dirname $HERE`/..
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ROOTDIR=`cd $BASE; pwd`
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. $ROOTDIR/bin/ejabberdctl stop 2>/dev/null >/dev/null
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$ROOTDIR/bin/ejabberdctl stopped
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PA=/tmp/clustersetup_$$
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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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echo "Using commands:"
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which erl || error "can't find erl" 11
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which erlc || error "can't find erlc" 12
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echo ""
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cd $ROOTDIR
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mkdir -p $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 $KERNEL_OPTS -mnesia dir "\"$EJABBERD_DB\"" -s mnesia -s $CLUSTERSETUP start
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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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