Posting here as per advice from the Fix Common Problems plugin.

I've not noticed any issues, but have included my diagnostics as suggested.

 

Any ideas what is causing the error please?

gandalf-diagnostics-20250127-1016.zip

3 minutes ago, dizzying-reinterpretation3979 said:

Any ideas what is causing the error please?

On the 25th whatever one of your containers was doing with Python (busybox perhaps?) ran the system OOM - reboot to clear the log so FCP stops warning you, and if it happens again try limiting the amount of RAM available to the container

Thanks for checking that. I'm not sure what busybox is. It's not something I have installed in Docker.

I'll do a reboot and see if I get it again.

8 minutes ago, dizzying-reinterpretation3979 said:

Thanks for checking that. I'm not sure what busybox is. It's not something I have installed in Docker.

I'll do a reboot and see if I get it again.

Jan 25 15:00:19 Gandalf kernel: Tasks state (memory values in pages):
Jan 25 15:00:19 Gandalf kernel: [  pid  ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
Jan 25 15:00:19 Gandalf kernel: [  15417]     0 15417      110       13    24576        0             0 s6-svscan
Jan 25 15:00:19 Gandalf kernel: [  16050]     0 16050       55        6    24576        0             0 s6-supervise
Jan 25 15:00:19 Gandalf kernel: [  16060]     0 16060       52        1    24576        0             0 s6-linux-init-s
Jan 25 15:00:19 Gandalf kernel: [  16157]     0 16157       55        6    24576        0             0 s6-supervise
Jan 25 15:00:19 Gandalf kernel: [  16158]     0 16158       55        5    24576        0             0 s6-supervise
Jan 25 15:00:19 Gandalf kernel: [  16159]     0 16159       57        5    36864        0             0 s6-supervise
Jan 25 15:00:19 Gandalf kernel: [  16160]     0 16160       58        7    36864        0             0 s6-supervise
Jan 25 15:00:19 Gandalf kernel: [  16168]     0 16168       52        6    24576        0             0 s6-ipcserverd
Jan 25 15:00:19 Gandalf kernel: [  31279]     0 31279      407       15    36864        0             0 busybox
Jan 25 15:00:19 Gandalf kernel: [  31538]    99 31538   217065   193497  1847296        0             0 python3
Jan 25 15:00:19 Gandalf kernel: oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0-1,oom_memcg=/docker/ab76d1381c7334fc7cd737076fe1fa4f0fdc64862fe2ae1fdb92920d53cb96c0,task_memcg=/docker/ab76d1381c7334fc7cd737076fe1fa4f0fdc64862fe2ae1fdb92920d53cb96c0,task=python3,pid=31538,uid=99
Jan 25 15:00:19 Gandalf kernel: Memory cgroup out of memory: Killed process 31538 (python3) total-vm:868260kB, anon-rss:773988kB, file-rss:0kB, shmem-rss:0kB, UID:99 pgtables:1804kB oom_score_adj:0
Jan 25 15:00:40 Gandalf kernel: kworker/u97:1 invoked oom-killer: gfp_mask=0xc00(GFP_NOIO), order=0, oom_score_adj=0

 

It was a running process at the time, you can probably narrow it down if you run "ps auxf" from the terminal and see what's spawning what