Simple script to display service or Docker container status on WAGO Controller user LEDs.
- GREEN : Container or service running
- ORANGE : Container or service stopped
- RED : Container does not exist or Docker not installed/started (not used for service)
Download and place the script monitor_container_led i.e. folder /etc/config-tools.
Give it execution permission :
chmod 750 /etc/config-tools/monitor_service_led./monitor_service_led -s [SERVICE or CONTAINER NAME] -l [LED ID] (-d)-h : display this help -s : service name or container name if -d option is used -l : Led ID where service status should be displayed. Acceptable values : U1 - U7 depending on the platform -d : argument to provide if the service to monitor is a Docker container
Example 1 : monitor lighttpd web server status :
./monitor_service_led -s lighttpd -l U1Example 2 : monitor mosquitto container status :
./monitor_service_led -s mosquitto -l U1 -dMake sure LED isn't used by CODESYS and is available on the PFC variant.
Then you need to use CRON in order to trigger a period call of the script.
To open crontab with nano (easier than vim ?)
export VISUAL=nano; crontab -eCopy/Paste the following (adapt to your script location, container/service name and LED) :
* * * * * /etc/config-tools/monitor_service_led -s mosquitto -l U1 -dThis will check the container state every minute. You can add several lines if you have several containers/services to monitor, just use different LED of course.
We could add a deeper check of the container based on logs or based on status (when provided by the application, i.e Node-RED). When using a device with only 1 User LED (750-8217, CC100...) we could adapt the script to display a synthesis of monitored containers. Find a way to blink LED could be useful too.