Running 38.20230430.3.1 (CoreOS) with docker in it and a few containers. I don’t use the containers that often, maybe a few times a month. I noticed that sometimes all containers are down. When I then login to CoreOS, run “docker ps” it takes some time and then it shows all containers running with about 12sec uptime and then my containers are indeed working again, publishing their websites in them.
The VM in which CoreOS is running hasn’t been rebooted or moved in that time and I can’t figure out why the containers were down.
How can I check:
- if there are automatic updates for the OS that cause the OS to reboot without me seeing it?
- if docker crashed for some reason?
Journalctl log is so long, I have a hard time filtering it to find the cause of this.