Detect when docker instance reached memory limit

Sat, 24 Oct 2015 21:23:07 +0000

I’d like to know if my test instance reached the memory limit and behaves a kind of different after that.

simple but slightly incorrect approach Link to heading

Just grab the kernel logs for oom-killer for the particular container id.

$ CONTAINER_ID=84ec6201e6a54
$ dmesg -T | grep -B2 docker-$CONTAINER_ID | grep -B1 oom-killer

outputs

--
[Sun Oct 25 22:06:17 2015] java invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0

Limitation: This implies that kernel logs before and after are about the same issue.