Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

[anilkumar panditi]

Hi,

sorry for asking repeated question,

Earlier i had worked on a Jenkins instance which is a docker docker container which uses the docker inside container like below.

-v /var/run/docker.sock:/var/run/docker.sock --privileged="true" --user="root"

But , my Jenkins instance is running on Openshift as pod ,now and i wanted to reuse the same Jenkinsfile which has docker commands , and failing with 

Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Please help.

[anilkumar panditi]

Hi Could you please help.

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[amila...@gmail.com]

Hi,

check first if openshift jenkins pod using its container engine  asweather docker or containerd or something else in your Openshift server. 
This error indicates docker daemon not running or cannot connect to docker daemon.   
<systemctl status docker>

<journalctl -u docker.service>

<vi /etc/docker/daemon.json>


not much idea about openshift docker for me.

AMila

Devops Eng

[Richard Bywater]

Which version of Openshift are you using? AFAIK Openshift 4 doesn't support use of the Docker socket anymore (or at least not by default)

Richard.

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