Docker Container Management

Summary

This document describes the recommended procedure for configuring the Gitlab Repository Docker Container Tag Automated Management.

Purpose

The intention is to prevent open-ended and limitless growth of gitlab containers and tags. Unlimited growth has the potential to over-use resources and increase operation costs.

Teams are encouraged to implement this process in their repositories.

• Navigate to the GitLab Repository.
• Go to Settings→Packages and Registries.
• Enable or disable the cleanup scheduler.
• Update settings as follows:
  • Run cleanup
    • every two weeks.
  • Keep Tags Matching:

    CRITICAL

    Use of the correct regex for the "keep tags matching" is CRITICAL.

    • In order to retain version tags that follow the Platform One SemVer format (i.e., nn.nn.nn) use the following regular expression syntax.
    • [\d]{1,3}\.[\d]{1,3}\.[\d]{1,3}
  • Remove tags older than:
    • 30 days
  • Remove tags matching:
  • For example:

Appendix

• Reduction in SIZE of repositories was NOT evident when enabling cleanup as no impact will be seen until garbage collection is performed.
• Garbage collection is a function managed by Partybus OPS: https://docs.gitlab.com/ee/administration/packages/container_registry.html#container-registry-garbage-collection