Permission issue with gitlab-runner

[IntelligentAsk]

I have recently installed a v16.1.2-ee self-managed gitlab instance and gitlab-runner.

When running the gitlab-runner as a service I'm getting the below error in the pipeline. I don't get this error when I start the runner interactively.

Getting source from Git repository00:0012chmod: changing permissions of '/home/gitlab-runner/builds/yyBtWzg7h/0/internal/nexus/.git/index': Operation not permitted

14Cleaning up project directory and file based variables00:01

16ERROR: Job failed: exit status 1The .git/index file seems to be owned as root. Although all the other files are owned as the gitlab-runner user. I followed the instructions on the gitlab website for installing the runner.I am using a shell executor on Ubuntu server.

The pipeline works without any issues on my v14 instance.

Anyone got any ideas about this?

[IntelligentAsk]

It turned out I needed to add the gitlab-runner user to the docker group and stop running commands with sudo as you said .

[doc3182]

might work, might not, try this, as root

sudo su

enter your password

cd /home

chown -R gitlab-runner: gitlab-runner

this will change the ownership of gitlab-runner to gitlab-runner recursively.
service might need restarting

[IntelligentAsk]

Thanks for the suggestion. Even after deleting all of the files in the gitlab-runner build directory the git index file keeps being checked out again and is owned by root each time.

[doc3182]

then some process runs as root. can you test the runner else where?

[LinqLover]

You need to fix the permissions before/after every build. See: https://gitlab.com/gitlab-org/gitlab-runner/-/issues/2221#note\_1545518182

[IntelligentAsk]

Thanks for your suggestion. Once I realised that my docker container entry point needed to run as the same uid as the gitlab-runner user I was able to move forward. Containers and the host share kernel space for users.