"Connection to localhost closed by remote host." during build

In this job, the log stops in the middle of the build with "Connection to localhost closed by remote host.". The build succeeded though, and the resulting package was uploaded properly.


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3 years ago
3 years ago
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~ollieparanoid 3 years ago

the resulting package was uploaded properly.

that's wrong, the package was not uploaded.

~sircmpwn 3 years ago

The "remote host" in this case is the build VM - I would suspect perhaps the OOM killer?

~ollieparanoid 3 years ago

Would the OOM killer kill the SSH connection though?

In any case, even though we're building a lot of packages, this is the only time I've seen such an error on builds.sr.ht. It seems like a one-time thing and can probably be closed. It's in the tracker now, in case somebody should run into it again.

Thanks, Drew!

~sircmpwn 3 years ago

It could kill whatever process the SSH connection is running, which would then terminate the SSH connection normally. You can tell if the OOM killer got involved by logging into the failed VM and reviewing dmesg.

~ollieparanoid 3 years ago

I see, I'll do that if it happens again.

~ave 3 years ago

On our own instance we've also had this issue, and it seems like oom-killer was indeed the problem:

[2059133.197720] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=af5093108577c3a42b1f80d9a2e47f09f19dc700a3b3707edc05262a897af6fe,mems_allowed=0,global_oom,task_memcg=/docker/852c3e6b9a045b85fb87c3fb494889cae4fbdc8ea3039e5bcb2d05015f41027b,task=qemu-system-x86,pid=6530,uid=0
[2059133.197861] Out of memory: Killed process 6530 (qemu-system-x86) total-vm:18293492kB, anon-rss:14784824kB, file-rss:0kB, shmem-rss:4kB, UID:0 pgtables:31032kB oom_score_adj:0
[2059134.204457] oom_reaper: reaped process 6530 (qemu-system-x86), now anon-rss:0kB, file-rss:20kB, shmem-rss:4kB

We've bumped up the RAM as a workaround which will hopefully help with this issue.

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