check_mqtt 1.0

Dead simple Nagios/Icinga Plugin for checking MQTT pub/sub

Dead simple Bash script that checks if a published message gets received by a subscription. Depends on mosquitto_pub and mosquitto_sub.

Install

Place the file check_mqtt somewhere (e.g. /usr/local/bin/) and make it executable.

Usage

Use the same command line arguments as with the mosquitto_sub command.

Nagios command and service definition example

define command {
        command_name    check_mqtt
        command_line    /usr/local/bin/check_mqtt.sh -h 192.168.1.100 -p 8883 -u user -P password -t nagios/check --cafile /etc/ssl/certs/DST_Root_CA_X3.pem
}

define service {
        use                     generic-service
        host_name               servername
        service_description     MQTT Pub/Sub
        check_command           check_mqtt
}

License

MIT (c) 2018, 2019 Sebastian Raff