Mirroring a Gitlab project to Github

Mirroring a Gitlab project to Github

Let’s pretend you have a project on Gitlab called ask-izzy and you want to mirror it up to Gitlab which is located at https://github.com/ask-izzy/ask-izzy

Assuming you’re running Gitlab as the default user of git and that your repositories are stored in /mnt/repositories you can following something similar to the following instructions:

  1. Grant write access to Github

Get your Gitlab install’s pubkey from the git user

cat /home/git/.ssh/id_rsa.pub

On Github add this pubkey as deploy key on the repo, make sure you tick the option to allow write access.

  1. Add a post-recieve hook to the Gitlab project
mkdir /mnt/repositories/developers/ask-izzy.git/custom_hooks/
echo "exec git push --quiet github &" > \
    /mnt/repositories/developers/ask-izzy.git/custom_hooks/post-receive
chown -R git:git /mnt/repositories/developers/ask-izzy.git/custom_hooks
chmod +x /mnt/repositories/developers/ask-izzy.git/custom_hooks/post-receive
  1. Add Github as a remote to the Gitlab project
cd /mnt/repositories/developers/ask-izzy.git
vi config

and add in the Github remote:

[remote "github"]
  url = [email protected]:ask-izzy/ask-izzy.git
  fetch = +refs/*:refs/*
  mirror = true

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