Docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock

Question

I am new to docker. I just tried to use docker in my local machine(Ubuntu 16.04) with Jenkins.

I configured a new job with below pipeline script.

Answer 1

In my case, it was not only necessary add jenkins user to docker group, but make that group the primary group of the jenkins user.

# usermod -g docker jenkins
# usermod -a -G jenkins jenkins

Don't forget to reconnect the jenkins slave node or restart the jenkins server, depend on your case.