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I would like to run Docker shell commands on Jenkins like:
docker ps
Is it possible to do it with out using any plugins? Since Jenkins isn't a user, but a service account how can I add to docker group?
463
The Docker daemon always runs as the root user. If you don't want to preface the docker command with sudo , create a Unix group called docker and add users to it. When the Docker daemon starts, it creates a Unix socket accessible by members of the docker group.
Rootless mode allows running the Docker daemon and containers as a non-root user to mitigate potential vulnerabilities in the daemon and the container runtime. Rootless mode does not require root privileges even during the installation of the Docker daemon, as long as the prerequisites are met.
First execute
sudo groupadd docker
Then execute
sudo usermod -aG docker $USER
Then logout its important to logout because your group membership is re-evaluated
Login and try again
docker ps
It works!
137
I had the issue when I was running from jenkins pipeline. I added jenkins user to docker group, restarted the docker engine and rebooted the machine as well. However I still get the same error dial unix /var/run/docker.sock: connect: permission denied.
Finally I added jenkins to root group and it resolved my issue (ubuntu 18.04) (VM on Azure)
sudo gpasswd -a jenkins root
sudo service docker restart
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