Send mqtt message when MQTTHOST is defined

Author: sigio

monitor.rc

@@ -3,6 +3,9 @@ NSCACONF=/etc/nagios/send_nsca.cfg
 NSCASERVER=your.nagios.system
 HOSTNAME=`hostname`
 CHECKPATH=/usr/lib64/nagios/plugins
+MQTTHOST=127.0.0.1
+MQTTTOPIC="nsca/monitor"
+MQTTWARNTOPIC="alert/monitor"
 
 CHECKS=(
 'check_users|check_users -w 5 -c 10'

monitor.sh

@@ -40,6 +40,14 @@ if mkdir "${LOCKDIR}" &>/dev/null; then
       RETVAL=$?
 
       echo "${HOSTNAME}	${CHECKNAME}	${RETVAL}	${DATA}" | ${NSCA} -H ${NSCASERVER} -c ${NSCACONF}
+
+      if [ ${MQTTHOST} ]; then
+        mosquitto_pub -h ${MQTTHOST} -t ${MQTTTOPIC} -m "{'host':'${HOSTNAME}', 'check':'${CHECKNAME}', 'returncode':'${RETVAL}', 'data':'${DATA}'}"
+        if [ ${RETVAL} -ne 0 ]; then
+          mosquitto_pub -h ${MQTTHOST} -t ${MQTTWARNTOPIC} -m "{'host':'${HOSTNAME}', 'check':'${CHECKNAME}', 'returncode':'${RETVAL}', 'data':'${DATA}'}"
+        fi
+      fi
+
     done > /dev/null
 else # lock failed, now check if the other PID is alive
     OTHERPID="$(cat "${PIDFILE}")"