Gitlab repository mirroring
git, gitlab, mirroring, version-control
Solution
Update Dec 2016: Mirroring is suported with GitLAb EE 8.2+: see "Repository mirroring".
As commented by Xiaodong Qi:
This answer can be simplified without using any command lines (just set it up on Gitlab repo management interface)
Original answer (January 2013)
If your remote mirror repo is a bare repo, then you can add a post-receive hook to your gitlab-managed repo, and push to your remote repo in it.
#!/bin/bash
git push --mirror slave_user@mirror.host:/path/to/repo.git
As Gitolite (used by Gitlab) mentions:
if you want to install a hook in only a few specific repositories, do it directly on the server.
which would be in:
~git/repositories/yourRepo.git/hook/post-receive
Caveat (Update Ocotober 2014)
Ciro Santilli points out in the comments:
Today (Q4 2014) this will fail because GitLab automatically symlinks github.com/gitlabhq/gitlab-shell/tree/… into every repository it manages. So if you make this change, every repository you modify will try to push. Not to mention possible conflicts when upgrading `gitlab-shell`, and that the current script is a ruby script, not bash (and you should not remove it!).
You could correct this by reading the current directory name and ensuring bijection between that and the remote, but I recommend people to stay far far away from those things
See (and vote for) feeadback "Automatic push to remote mirror repo after push to GitLab Repo".
Update July 2016: I see this kind of feature added for GitLab EE (Enterprise Edition): MR 249
- Add ability to enter remote push URL under Mirror Repository settings
- Add implementation code to push to remote repository
- Add new background worker
- Show latest update date and sync errors if they exists.
- Sync remote mirror every hour.
Note that the recent `Remote Mirror Repository` (issues 17940) can be tricky:
I'm currently trying to shift main development of the Open Source npm modules of my company Lossless GmbH (https://www.npmjs.com/~lossless) from GitHub.com to GitLab.com
I'm importing all the repos from GitHub, however when I try to switch off `Mirror Repository` and switch on `Remote Mirror Repository` with the original GitHub URL I get an error saying:
Remote mirrors url is already in use
Here is one of the repos this fails with: https://gitlab.com/pushrocks/npmts Edited 2 months ago
turns out, it just requires multiple steps:
- disable the Mirror Repository
- press save
- remove the URl
- press save
- then add the Remote Mirror
Problem
Is it possible to have gitlab set up 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 if 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.