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Docker Fail Install - no space left on device: unknown

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  • Community Expert
Quote

docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: unable to apply cgroup configuration: mkdir /sys/fs/cgroup/docker/fbeabbda1c363dfdf437ba38ca052d9a151176e3e55c5904e9f65a7f1a30bc36: no space left on device: unknown.

The command failed.

I'm running unRAID 6.12.14

Can someone help me narrow this issue down preventing installation of new dockers?

I check my array, cache pools, and USB boot device; there is plenty of space on all.

Solved by trurl

  • Author
  • Community Expert

I found this from the Fix Common Problems plugin:

Quote

/var/log is getting full (currently 100 % used)

syslog could be potentially being spammed with error messages. A reboot of your server will at least temporarily solve this problem

I will check my syslog as I am trying to avoid a reboot.

I see no syslog messages loading:

image.thumb.png.8f74ce6f0fc6756aa4a8f2106d1e7675.png

Can I increase the size of /var/log or adjust retention...?

Edited by gurulee

  • Author
  • Community Expert
On 2/24/2025 at 10:02 AM, trurl said:

Attach Diagnostics to your NEXT post in this thread.

@trurl thank you for the quick reply and guidance. I am attaching my diagnostic here for review. 🙂 🙏

 

Edited by gurulee
removed diag file post resolution

  • Community Expert
  • Solution

Your log is filling up with these many times per second.

Feb 12 05:26:09 Tower sshd-session[11597]: Starting session: command for root from 192.168.100.143 port 55868 id 1
Feb 12 05:26:09 Tower sshd-session[11597]: Close session: user root from 192.168.100.143 port 55868 id 0

See if you can figure out how to stop that.

  • Community Expert

After I filter all that out, there is nothing left to see. Make it quit, reboot, and post new diagnostics.

  • Author
  • Community Expert
7 minutes ago, trurl said:

Your log is filling up with these many times per second.

Feb 12 05:26:09 Tower sshd-session[11597]: Starting session: command for root from 192.168.100.143 port 55868 id 1
Feb 12 05:26:09 Tower sshd-session[11597]: Close session: user root from 192.168.100.143 port 55868 id 0

See if you can figure out how to stop that.

That is my Home-Assistant system using the below integration to monitor my unRAID server:

https://github.com/domalab/ha-unraid/wiki

 

It configured on the Home-Assistant side like this:

image.png.231973eca1d9b9be301e6c85e55ed7aa.png

  • Community Expert
54 minutes ago, trurl said:

Make it quit, reboot, and post new diagnostics.

 

  • Community Expert

Do you mean you have fixed your syslog problem? What about your docker problem?

  • Author
  • Community Expert
10 hours ago, trurl said:

Do you mean you have fixed your syslog problem? What about your docker problem?

Docker problem preventing new docker installs was related to no space left in log path. Suppressing the log spamming from the home-assistant integration with the above noted script will prevent reoccurrence.

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