Red Hat Bugzilla – Bug 1317059
cgroups: cgroups.proc no such file or directory error during docker build
Last modified: 2016-08-19 16:46:36 EDT
Description of problem:
Errors such as
System error: open /sys/fs/cgroup/devices/system.slice/docker-fc2e8c0bfdef0d585ed13e784ccc1024ec33f4f01e3c4c992ea15b38abca58b7.scope/cgroup.procs: no such file or directory
are seen during origin tests.
For more info see https://github.com/openshift/origin/issues/7927
Version-Release number of selected component (if applicable):
Seen during jenkins tests
docker build failure
docker build shouldn't fail with this cgroups error
This seems like a probable race of some kind with systemd cgroups support.
The code that is failing does the following:
1. Creates a systemd transient unit for e.g. /system.slice/docker-fc2e8c0bfdef0d585ed13e784ccc1024ec33f4f01e3c4c992ea15b38abca58b7.scope
2. Join the device cgroup manually by creating the device directory
3. Write the pid of the container process to
/sys/fs/cgroup/devices/system.slice/docker-fc2e8c0bfdef0d585ed13e784ccc1024ec33f4f01e3c4c992ea15b38abca58b7.scope/cgroup.procs (creating the file as well)
This blocks the OpenShift 3.2 release, given that it results in failures in roughly 1% of container launches on Docker 1.9 on RHEL.
https://github.com/projectatomic/docker/pull/76 is a potential fix that we need a rpm for.
Mrunal can I close this, Do we have this in docker-1.9?