I've had an issue where about every month or so, the Unraid Interface crashes, and all the docker containers and shares etc go offline. But looking at the monitor hooked up to the server, it's still alive. I can give it the shutdown command, and after about 30 seconds, the server jumps back to life, before shutting down cleanly.

However, I've had a look at netdata, which seems to give some useful info. For whatever reason, RAM usage suddenly jumps up before it maxes out my 64 GB of RAM, then locks up. Do you have any idea what might be causing this? Would it be a specific Docker container, maybe?

I'm running Unraid 6.12.13

 

You could have for example a container going rogue, enable the syslog server to see if that catches anything.