ejabberd cluster instance check

#!/bin/bash
# 13.09.2019 Jonny Rimkus
# Watchdog for ejabberd Cluster
# 17.09.2019
# add main ejabbderd node as variable
# check if current node is missing from the cluster
# and add it automatically or if -noauto arg was given return -1


# path to ejabberdctl
jabberctl="/usr/local/bin/ejabberdctl"
# main ejabberd instance (node name for join_cluster)
nodemain="[email protected]"



# how many instances are in the cluster
IN_CLUSTER=$($jabberctl list_cluster | grep "$nodemain" | wc -l)

if [ "$IN_CLUSTER" -lt 1 ]; then
    if [ "$1" = "-noauto" ]; then
        echo "$(date '+%d.%m.%Y %H:%M:%S')# instance is not in cluster '$nodemain'"
        exit -1
    fi

    # not all instances are running, do a join_cluster
    echo -n "$(date '+%d.%m.%Y %H:%M:%S')# adding instance to cluster '$nodemain'..."
    $jabberctl --no-timeout join_cluster "$nodemain"
    if [ $? -ne 0 ]; then
        echo -n "$(date '+%d.%m.%Y %H:%M:%S')# error!"
        exit $?
    fi
    echo "$(date '+%d.%m.%Y %H:%M:%S') done"
else
    # nothing to do, all instances
    echo "$(date '+%d.%m.%Y %H:%M:%S')# all instances are running"
fi