Monitoring additional services with chkservd

[JIKOmetrix]

Hello,

I have my cPanel servers setup monitor my RAID status with mdadm. I used the process from this link:

Using mdadm to send e-mail alerts for RAID failures |...

www.suse.com

The mdadm --monitor start with reboot, however, I'd like to monitor mdadm with chkservd. I found this:

How to add a new service for chkservd to monitor

Introduction The chkservd driver monitors the status of services to determine if they are online or if a restart is required for the service. The chkservd driver also allows you to add your own cus...

support.cpanel.net

However, I'm clear on what are the correct parameters for adding mdadm. The addition process is clear enough. I just don't know what if mdadm uses a port or what command chkservd would use to test the connection to mdadm.

Does anyone have experience with these setting in chkservd for mdadm?

Thanks,
Mike

 

[cPRex]

Hey there! It doesn't look like mdadm runs as a daemon service - the example provided on the SuSE page you linked is just the tool running as part of a bash script. This wouldn't have a port to use to check that the tool is up and running.

If you'd like to try something different, you could try making the BASH script into a daemon, using something like this:

Run Bash Script as a Daemon | Baeldung on Linux

Learn how to run a bash script as a daemon in the background.

www.baeldung.com

and then you could monitor that service, but it does have to be a daemon on the machine.

 

[JIKOmetrix]

Thanks. I'll check that out.

In review the link I provided it has a daemonization directive.
mdadm --monitor --scan --daemonize [EMAIL='[email protected]'][email protected][/EMAIL]

When I run this on my Alma linux, ps aux | grep mdadm I get :
root 1121 0.0 0.0 28180 1916 ? Ss Sep02 0:01 /sbin/mdadm --monitor --scan -f --pid-file=/var/run/mdadm/mdadm.pid

It starts on boot.

I was just hoping to get a notice from the system. I guess I can try to write a cron script too that send me an email of "/sbin/mdadm --monitor --scan" does not exist in output of "ps aux | grep mdadm".