Docker memory.kmem limit

FCKJohni

Hello, I have a Strong VPS but whatever I do, I always get this error
ERROR: for dockerapi-mailcow Cannot start service dockerapi-mailcow: OCI runtime create failed: container_linux.go:349: starting container process caused "process_linux.go:297: applying cgroup configuration for process caused \“failed to set memory.kmem.limit_in_bytes, because either tasks have already joined this cgroup or it has children\”": unknown

I am unsure what causes this, I have tried setting a higher DefaultTaskMax but that didn’t help at all.

diekuh

Hi, which virtualization platform? Which OS?

FCKJohni

Hey, I got it from a hoster named Strato, i am unsure what virtualization it uses But its Debian 10

pkernstock

What does cat /proc/user_beancounters give you as an output?

FCKJohni

This is the output: http://sprunge.us/xYIyag

pkernstock

Yep, then this is OpenVZ/Virtuozzo and therefore not supported, also very problematic with Docker. Better use a full-virtualized VM.

FCKJohni

What do you mean by “Full-virtualized VM”

pkernstock

Something like KVM, VMware ESXi, etc which also virtualizes the hardware.

OpenVZ doesn’t do that: https://en.wikipedia.org/wiki/OpenVZ

FCKJohni

Can you recommend a good cheap hoster that does that?

MAGIC

There’s Hetznercloud, OVH, netcup, contabo and much more