Nology

Messing around with OpenShift Origin 3.6.0 and their Docker Quickstart guide I stumbled upon some configuration incompatibilities with Kubernetes:

F0819 08:47:34.208186    9065 node.go:282] failed to run Kubelet: failed to create kubelet: misconfiguration: kubelet cgroup driver: "systemd" is different from docker cgroup driver: "cgroupfs"

The issue is caused due to using cgrougfs as Cgroup Driver for Docker. You can verify your Docker config by running docker info | grep Cgroup. You can change your Cgroup Driver to systemd using the native.cgroupdriver parameter for the Docker Daemon. Add the following arg to your /etc/systemd/system/docker.service.d/docker-thinpool.conf (ExecStart) file and /etc/default/docker (DOCKER_OPTS):

--exec-opt native.cgroupdriver=systemd

Relaunch the dockerd afterwards and verify your changes:

systemctl daemon-reload
systemctl restart docker.service
docker info | grep Cgroup

Further references

docker change cgroup driver to systemd

I want to docker to start with systemd cgroup driver. for some reason it using only cgroupfs on my centos 7 server. here is startup config file. # systemctl cat docker # /usr/lib/systemd/system/d…

openshift/origin docker container fails to start: failed to create kubelet: misconfiguration: kubelet cgroup driver: “systemd” is different from docker cgroup driver: “cgroupfs” · Issue #14766 · openshift/origin

Affected System configuration

$ docker version

Client:
 Version:      17.06.1-ce
 API version:  1.30
 Go version:   go1.8.3
 Git commit:   874a737
 Built:        Thu Aug 17 22:51:12 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.06.1-ce
 API version:  1.30 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   874a737
 Built:        Thu Aug 17 22:50:04 2017
 OS/Arch:      linux/amd64
 Experimental: false

$ lsb_release -a
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.3 LTS
Release:    16.04
Codename:   xenial