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xmpp.chapril.org-ejabberd/docker/examples/docker-compose-cluster/scripts/pre/30_join_cluster.sh

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#!/bin/bash
set -e
source "${EJABBERD_HOME}/scripts/lib/base_config.sh"
source "${EJABBERD_HOME}/scripts/lib/config.sh"
source "${EJABBERD_HOME}/scripts/lib/base_functions.sh"
source "${EJABBERD_HOME}/scripts/lib/functions.sh"
get_cluster_node_from_dns() {
local cluster_host=$(drill ${DOMAINNAME} \
| grep ${DOMAINNAME} \
| grep -v ${HOSTIP} \
| awk '{print $5}' \
| grep -v "^$" \
| head -1)
echo $(discover_dns_hostname ${cluster_host})
}
file_exist ${FIRST_START_DONE_FILE} \
&& exit 0
join_cluster $(get_cluster_node_from_dns)
exit 0