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the hosting provider of my KVM (Strato) recently upgraded the version of Virtuozzo they were using from 6 to 7. Since then a few of my docker containers fail to start with the following error message:

❯ sudo docker start spring_webapp

Error response from daemon: 
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


Error: failed to start containers: spring_webapp

The only thing the containers that won't start seem to have in common is that they contain a java webapp. Other containers like gitlab or a few mariadb instances seem to start just fine.

A google search for the error message returned some older issues on github but those seem to have been fixed years ago: https://github.com/opencontainers/runc/issues/1083

I am running Ubuntu 18.04 LTS with docker 19.03.12.

Already opened a ticket with my hosting provider but they answered with a canned response that since I have a root server they can't help me, basically saying that it's a problem with my configuration.

Unfortunately I don't know enough about OpenVZ/Virtuozzo to refute them.

Any hint pointing me in the right direction would be highly appreciated :)

Here's the output of /proc/user_beancounters

❯ sudo cat /proc/user_beancounters

Version: 2.5
       uid  resource                     held              maxheld              barrier                limit              failcnt
    831745: kmemsize                564412416            766132224  9223372036854775807  9223372036854775807                    0
            lockedpages                     0                   16  9223372036854775807  9223372036854775807                    0
            privvmpages               5148863              5444666  9223372036854775807  9223372036854775807                    0
            shmpages                    41758                74651  9223372036854775807  9223372036854775807                    0
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            numproc                       919                  919                 1100                 1100                    0
            physpages                 1972269              2444334              8388608              8388608                    0
            vmguarpages                     0                    0  9223372036854775807  9223372036854775807                    0
            oomguarpages              2104451              2452167                    0                    0                    0
            numtcpsock                      0                    0  9223372036854775807  9223372036854775807                    0
            numflock                        0                    0  9223372036854775807  9223372036854775807                    0
            numpty                          4                    4  9223372036854775807  9223372036854775807                    0
            numsiginfo                     16                  129  9223372036854775807  9223372036854775807                    0
            tcpsndbuf                       0                    0  9223372036854775807  9223372036854775807                    0
            tcprcvbuf                       0                    0  9223372036854775807  9223372036854775807                    0
            othersockbuf                    0                    0  9223372036854775807  9223372036854775807                    0
            dgramrcvbuf                     0                    0  9223372036854775807  9223372036854775807                    0
            numothersock                    0                    0  9223372036854775807  9223372036854775807                    0
            dcachesize              353423360            552648704  9223372036854775807  9223372036854775807                    0
            numfile                      6327                11230  9223372036854775807  9223372036854775807                    0
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            numiptent                     219                  222                 2000                 2000                    0
fiendie
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1 Answers1

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Yep, thats a Strato issue... happened after their maintenance 15./16. July 2020. I have already submitted a ticket... lets see if there is a response.

Needless to say, Strato had major performance problems in the past 3..4 months and just got that fixed recently.

Now this new maintenance last week messed up everything again.

EDIT:

Just deleted the container(s) from my server and reinstalled them. Now all is working well again. Maybe thats a solution for others, too?

MSZ
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