docker-runc not installed on system

Question

I recently updated my Centos 7 based machine. And since, i fail to start any of my dockers. Does someone have some experience with this issue and if yes how did you fix it ? Tha

Answer 1

I know that this is a rather old question; however, this occured when I updated from CentOS - Extras docker to Docker's own docker-ce rpm. The service file located at /usr/lib/systemd/system/docker.service had the following lines hardcoded into the ExecStart line:

--add-runtime docker-runc=/usr/libexec/docker/docker-runc-current \
--default-runtime=docker-runc \
--exec-opt native.cgroupdriver=systemd \
--userland-proxy-path=/usr/libexec/docker/docker-proxy-current \

By default, the docker-ce package does not come with the same set of lines and the file paths are different. After upgrading I added the following and the containers respected my start commands with no data lost as expected:

 --add-runtime docker-runc=/usr/bin/docker-runc \
    --default-runtime=docker-runc \
    --exec-opt native.cgroupdriver=systemd \
    --userland-proxy-path=/usr/bin/docker-proxy

Hope this helps someone else!