Description of problem: docker shows messages msg="Your kernel does not support cgroup rt runtime" at startup Version-Release number of selected component (if applicable): 1.13.1-44.git584d391.fc27 is not present in version docker-1.13.1-26.gitb5e3294.fc27.x86_64 How reproducible: Always
Not sure what you are reporting. docker-1.13.1-44.git584d391.fc27 seems to be current in Fedora 27. Does this have support for the cgroup rt runtime?
In latest release, when docker starts, if you do a : systemctl status docker, there is a warning : msg="Your kernel does not support cgroup rt runtime" This is not the case with previous version : docker-1.13.1-26.gitb5e3294.fc27.x86_64 with the same kernel. This seems to be a regression in docker (I did a downgrade of docker, it solves this "issue"). Regards,
This is not an issue. Very likely we back ported RT-kernel feature and that's just saying that your kernel doesn't support Real Time features. The warning is innocuous