Gitlab repository mirroring

Question

Is it possible to have gitlab setup to automatically sync (mirror) a repository hosted at another location?

At the moment, the easiest way I know of doing this involves manually pushing to the two (gitlab and the other) repository, but this is time consuming and error prone.

The greatest problem is that a mirror can resynchronize is two users concurrently push changes to the two different repositories. The best method I can come up with to prevent this issue is to ensure users can only push to one of the repositories.

Answer 1

The best option is not to use post-receive hooks, but deployments commands that perform synchronisation via rsync, using Capistrano if you like Ruby, using Shipit if you prefer Javascript (Grunt).

Answer 2

A quick summary of configure mirroring repositories with GitLab and GitHub

1. GitHub: Settings > Developer settings > Personal access tokens
   • You need enable: public_repo
2. GitLab: GitLab project > Settings > Repository > Mirroring repositories

Push

• Git repository URL: https://[e-mail]/username/repo.git
• Mirror direction: Push
• Authentication method: Password
  • Password: your_token

Pull

• Git repository URL: https://github.com/username/repo.git
• Mirror direction: Pull
• Authentication method: leave_empty

Official GitLab documentation