I followed this thread with interest. I am unable to get the mk_docker plugin to work in the HAOS instance. Something hangs the check and it causes the checks to back up and the host runs out of memory. The basic agent runs fine.
From a monitoring strategy, I think it’s better to monitor services and entities through the front end HA API in addition to the basic host checks rather than watching the containers at the VM level. I’m going to start on some Python for that.
Also, I installed the check_mk_agent script into /data so that it is persistent across reboots.