ha-check-active

#!/bin/sh
#
# Exit codes:
# 0: HA is active
# 1: HA is NOT active
# other: error occured
#

set -e

PG_VERSION="9.5"
PG_SYSTEMD_RES="postgresql-${PG_VERSION}.service"

if [[ "$(uname -o)" != "GNU/Linux" ]]; then
	echo "Run this script in mgmtXX VM"
	exit 5
fi

ERIGONES_HOME=${ERIGONES_HOME:-"/opt/erigones"}
ESLIB="${ESLIB:-"${ERIGONES_HOME}/bin/eslib"}"

# shellcheck disable=SC1090
. "${ESLIB}/functions.sh"

if [[ -x /usr/sbin/crm_node ]]; then
	if pg_is_running && ! systemd_service_enabled "${PG_SYSTEMD_RES}"; then
		# the cluster is present and DB is running
		# (querying the cluster info requires root privileges
		# so we ignore the corner case of manually started DB
		# and we assume it is started by a cluster)
		echo HA is active
		exit 0
	fi
fi

# the HA is not active
echo HA is NOT active
exit 1