Kev's Development Toolbox

I have a GitLab Runner using a Shell Executor that needs to build a Docker container. When it executes the first Docker command it gets this error:

docker.errors.DockerException: Error while fetching server API version: ('Connection aborted.', PermissionError(13, 'Permission denied'))

If I logon as the gitlab-runnner user and try to execute docker commands manually I get this error:

$ docker ps
permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.47/containers/json": dial unix /var/run/docker.sock: connect: permission denied

A quick Google and I need to add the gitlab-runner to the Docker group to grant it permission to execute Docker:

sudo usermod -a -G docker $USER

Setting up a new self-hosted GitLab, the pipeline for my project is stuck with this error:

… which looks like there are no runners available for the project. I know I have a runner available because I set one up yesterday, so taking a closer look.

In the CI/CD settings for my project, I think I see my shared runner:

Looking in the admin settings, it looks like when I set it up I used the tag ‘shared’:

The error says ‘no runners match all of the job’s tags: docker-test’, so I think what I need to do is change the tags on my runner to match. I edited the tags to remove ‘shared’ and replaced with ‘docker-test’ and now the job starts running! On to the next errors!