One Git with Multiple Remotes

This article is about how to sync Gitlab, Github and Codeberg directly from the command line using git pull or push commands. Unlike mirror repositories, these repositories will be independent of each other. We also don't need different remote names for these repositories.

But if you want to keep a mirror copy of Gitlab in Github or vice-versa, this article from Github is for you.

If you want to keep github and gitlab repositories independent, then follow the below guidelines.

Adding SSH-keys to your local machine. [optional step]

We can use same keys for each git source. But I like to use different keys for different sources.

Generate unique SSH keys for Codeberg, Gitlab and Github.

ssh-keygen -t rsa -C "some@mail.com" -f ~/.ssh/id_rsa_codeberg
ssh-keygen -t rsa -C "some@mail.com" -f ~/.ssh/id_rsa_gitlab 
ssh-keygen -t rsa -C "some@mail.com" -f ~/.ssh/id_rsa_github

Add public keys to Codeberg, Gitlab and Github.

Add ~/.ssh/id_rsa_codeberg.pub to GitHub SSH-keys.
Add ~/.ssh/id_rsa_gitlab.pub to GitLab SSH-keys.
Add ~/.ssh/id_rsa_github.pub to GitHub SSH-keys.

Register the keys in your local machine

ssh-add ~/.ssh/id_rsa_codeberg
ssh-add ~/.ssh/id_rsa_github
ssh-add ~/.ssh/id_rsa_gitlab

Edit ~/.ssh/config with below content

Host codeberg.org
    HostName codeberg.org
    User git
    IdentityFile ~/.ssh/id_rsa_codeberg
Host gitlab.com
    HostName gitlab.com
    User git
    IdentityFile ~/.ssh/id_rsa_gitlab
Host github.com
    HostName github.com
    User git
    IdentityFile ~/.ssh/id_rsa_github

Configure repositories and remotes

Clone the original repository from Gitlab/Github/Codeberg to your local machine

git clone git@github.com:username/repository_name.git

Create a remote instance of the same

cd repository_name
git remote set-url origin --add git@gitlab.com:username/repository_name.git
git remote set-url origin --add git@codeberg.org:username/repository_name.git

To check all the remote for the repository, run the below

git remote -v

The command should return something like

origin  https://github.com/username/repository_name.git (fetch)
origin  https://github.com/username/repository_name.git (push)
origin  https://gitlab.com/username/repository_name.git (push)
origin  https://codeberg.org/username/repository_name.git (push)

Now you can just use git push and it will push on all remote.

# Last updated on 2021-02-14.