Issue CGroup enabled in a privileged CT - Failed to set cpu.cfs_quota_us

[Alban Staehli]

Server operating system version

CentOS 7.9

Plesk version and microupdate number

18.0.58 Update #2

Hi,

I've just enabled Cgroup on a Plesk instance running in a container in Proxmox.
The CT is privileged. I keep seeing following error messages:
Failed to set cpu.cfs_quota_us on /user.slice/user-****.slice: Invalid argument

And less regularly, the following one:
Failed to reset devices.list on /system.slice/run-user-****.mount:

Would you know what shall be done to avoid recurrent error message?
Thanks.

 

[kpushkarev]

Where do you see the messages? Do they just appear at regular intervals or some action provokes them?

 

[Alban Staehli]

Seems to be events handled by the monitoring of usage per subscription.
I can see these appearing just after a "Started Session c**** of use ***".
I also see a lot of "Cannot watch ****, PID is already watched twice".
All of this in the /var/log/messages

 

[Alban Staehli]

If I stop the Resource Controller (Cgroups) service via Plesk UI, I can see heaps of these messages appearing in the logs until the service actually stops.
Then these messages do not appear anymore.

 

[kpushkarev]

What does mount |grep cgroup show?

 

[Alban Staehli]

@kpushkarev here's the output:

cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)

 

[kpushkarev]

What's the output of find /sys/fs/cgroup/cpu,cpuacct/user.slice/ -name 'cpu.cfs*' -print -exec cat {} \;?

 

[Alban Staehli]

@kpushkarev here it is - thx for your help

/sys/fs/cgroup/cpu,cpuacct/user.slice/user-30.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-30.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10044.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10044.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10038.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10038.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10074.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10074.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10058.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10058.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10041.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10041.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10009.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10009.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10084.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10084.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10035.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10035.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10019.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10019.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10078.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10078.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10012.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10012.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10071.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10071.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10055.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10055.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10039.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10039.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10022.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10022.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10006.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10006.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-0.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-0.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10081.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10081.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10065.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10065.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10032.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10032.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10016.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10016.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10042.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10042.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10026.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10026.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-997.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-997.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10069.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10069.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10052.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10052.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10036.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10036.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10003.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10003.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10072.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10072.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10007.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10007.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10082.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10082.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10033.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10033.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10017.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10017.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10043.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10043.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10027.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10027.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10010.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10010.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10053.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10053.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10037.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10037.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10020.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10020.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10004.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10004.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10030.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10030.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10083.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10083.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10034.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10034.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10018.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10018.slice/cpu.cfs_quota_us
-1
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10001.slice/cpu.cfs_period_us
100000
/sys/fs/cgroup/cpu,cpuacct/user.slice/user-10001.slice/cpu.cfs_quota_us
-1

 

[kpushkarev]

Did you actually set any CPU limits for subscriptions in Plesk?

Please show the output of the following commands:

uname -a
hostnamectl status
cat /etc/os-release

Also, could you take some system user ID, e.g. 10001, and run

echo 100000 > /sys/fs/cgroup/cpu,cpuacct/user.slice/user-10001.slice/cpu.cfs_quota_us
echo -1 > /sys/fs/cgroup/cpu,cpuacct/user.slice/user-10001.slice/cpu.cfs_quota_us

?