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gitea/docs/content/usage/repo-mirror.en-us.md
John Olheiser bd4c7ce578
Docusaurus-ify (#26051) 
This PR cleans up the docs in a way to make them simpler to ingest by
our [docs repo](https://gitea.com/gitea/gitea-docusaurus).

1. It includes all of the sed invocations our ingestion did, removing
the need to do it at build time.
2. It replaces the shortcode variable replacement method with
`@variable@` style, simply for easier sed invocations when required.
3. It removes unused files and moves the docs up a level as cleanup.

---------

Signed-off-by: jolheiser <john.olheiser@gmail.com>
2023-07-26 04:53:13 +00:00

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date title slug sidebar_position toc draft aliases menu
2021-05-13T00:00:00-00:00 Repository Mirror repo-mirror 45 false false
/en-us/repo-mirror
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parent name sidebar_position identifier
usage Repository Mirror 45 repo-mirror

Repository Mirror

Repository mirroring allows for the mirroring of repositories to and from external sources. You can use it to mirror branches, tags, and commits between repositories.

Use cases

The following are some possible use cases for repository mirroring:

  • You migrated to Gitea but still need to keep your project in another source. In that case, you can simply set it up to mirror to Gitea (pull) and all the essential history of commits, tags, and branches are available in your Gitea instance.
  • You have old projects in another source that you don’t use actively anymore, but don’t want to remove for archiving purposes. In that case, you can create a push mirror so that your active Gitea repository can push its changes to the old location.

Pulling from a remote repository

For an existing remote repository, you can set up pull mirroring as follows:

  1. Select New Migration in the Create... menu on the top right.
  2. Select the remote repository service.
  3. Enter a repository URL.
  4. If the repository needs authentication fill in your authentication information.
  5. Check the box This repository will be a mirror.
  6. Select Migrate repository to save the configuration.

The repository now gets mirrored periodically from the remote repository. You can force a sync by selecting Synchronize Now in the repository settings.

❗❗ NOTE: You can only set up pull mirroring for repos that don't exist yet on your instance. Once the repo is created, you can't convert it into a pull mirror anymore. ❗❗

Pushing to a remote repository

For an existing repository, you can set up push mirroring as follows:

  1. In your repository, go to Settings > Repository, and then the Mirror Settings section.
  2. Enter a repository URL.
  3. If the repository needs authentication expand the Authorization section and fill in your authentication information. Note that the requested password can also be your access token.
  4. Select Add Push Mirror to save the configuration.

The repository now gets mirrored periodically to the remote repository. You can force a sync by selecting Synchronize Now. In case of an error a message displayed to help you resolve it.

❗❗ NOTE: This will force push to the remote repository. This will overwrite any changes in the remote repository! ❗❗

Setting up a push mirror from Gitea to GitHub

To set up a mirror from Gitea to GitHub, you need to follow these steps:

  1. Create a GitHub personal access token with the public_repo box checked.
  2. Create a repository with that name on GitHub. Unlike Gitea, GitHub does not support creating repositories by pushing to the remote. You can also use an existing remote repo if it has the same commit history as your Gitea repo.
  3. In the settings of your Gitea repo, fill in the Git Remote Repository URL: https://github.com/<your_github_group>/<your_github_project>.git.
  4. Fill in the Authorization fields with your GitHub username and the personal access token as Password.
  5. (Optional, available on Gitea 1.18+) Select Sync when new commits are pushed so that the mirror will be updated as well as soon as there are changes. You can also disable the periodic sync if you like.
  6. Select Add Push Mirror to save the configuration.

The repository pushes shortly thereafter. To force a push, select the Synchronize Now button.

Setting up a push mirror from Gitea to GitLab

To set up a mirror from Gitea to GitLab, you need to follow these steps:

  1. Create a GitLab personal access token with write_repository scope.
  2. Fill in the Git Remote Repository URL: https://<destination host>/<your_gitlab_group_or_name>/<your_gitlab_project>.git.
  3. Fill in the Authorization fields with oauth2 as Username and your GitLab personal access token as Password.
  4. Select Add Push Mirror to save the configuration.

The repository pushes shortly thereafter. To force a push, select the Synchronize Now button.

Setting up a push mirror from Gitea to Bitbucket

To set up a mirror from Gitea to Bitbucket, you need to follow these steps:

  1. Create a Bitbucket app password with the Repository Write box checked.
  2. Fill in the Git Remote Repository URL: https://bitbucket.org/<your_bitbucket_group_or_name>/<your_bitbucket_project>.git.
  3. Fill in the Authorization fields with your Bitbucket username and the app password as Password.
  4. Select Add Push Mirror to save the configuration.

The repository pushes shortly thereafter. To force a push, select the Synchronize Now button.

Mirror an existing ssh repository

Currently gitea supports no ssh push mirrors. You can work around this by adding a post-receive hook to your gitea repository that pushes manually.

  1. Make sure the user running gitea has access to the git repo you are trying to mirror to from shell.
  2. On the Webinterface at the repository settings > git hooks add a post-receive hook for the mirror. I.e.
#!/usr/bin/env bash
git push --mirror --quiet git@github.com:username/repository.git &>/dev/null &
echo "GitHub mirror initiated .."