debian-mirror-gitlab/doc/administration/job_traces.md

Job traces (logs)

By default, all job traces (logs) are saved to /var/opt/gitlab/gitlab-ci/builds and /home/git/gitlab/builds for Omnibus packages and installations from source respectively. The job logs are organized by year and month (for example, 2017_03), and then by project ID.

There isn't a way to automatically expire old job logs, but it's safe to remove them if they're taking up too much space. If you remove the logs manually, the job output in the UI will be empty.

Changing the job traces location

To change the location where the job logs will be stored, follow the steps below.

In Omnibus installations:

1. Edit /etc/gitlab/gitlab.rb and add or amend the following line:

   gitlab_ci['builds_directory'] = '/mnt/to/gitlab-ci/builds'
   

2. Save the file and reconfigure GitLab for the changes to take effect.

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In installations from source:

1. Edit /home/git/gitlab/config/gitlab.yml and add or amend the following lines:

   gitlab_ci:
     # The location where build traces are stored (default: builds/).
     # Relative paths are relative to Rails.root.
     builds_path: path/to/builds/
   

2. Save the file and restart GitLab for the changes to take effect.