Copyedit GitHub importer docs
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Achilleas Pipinellis
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@ -110,7 +110,7 @@ On the sign in page there should now be a GitHub icon below the regular sign in
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Click the icon to begin the authentication process. GitHub will ask the user to sign in and authorize the GitLab application.
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If everything goes well the user will be returned to GitLab and will be signed in.
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### GitHub Enterprise with Self-Signed Certificate
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## GitHub Enterprise with self-signed Certificate
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If you are attempting to import projects from GitHub Enterprise with a self-signed
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certificate and the imports are failing, you will need to disable SSL verification.
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@ -1,104 +1,143 @@
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# Import your project from GitHub to GitLab
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Using the importer, you can import your GitHub repositories to GitLab.com or to
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your self-hosted GitLab instance.
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## Overview
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Using the importer, you can import your GitHub repositories to GitLab.com or to your self-hosted GitLab instance.
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NOTE: **Note:**
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While these instructions will always work for users on GitLab.com, if you are an
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administrator of a self-hosted GitLab instance, you will need to enable the
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[GitHub integration][gh-import] in order for users to follow the preferred
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import method described on this page. If this is not enabled, users can alternatively import their
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GitHub repositories using a [personal access token](#using-a-github-token) from GitHub,
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but this method will not be able to associate all user activity (such as issues and pull requests)
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with matching GitLab users. As an administrator of a self-hosted GitLab instance, you can also use
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the [GitHub rake task](../../../administration/raketasks/github_import.md) to import projects from
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GitHub without the constraints of a Sidekiq worker.
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>**Note:** While these instructions will always work for users on gitlab.com, if you are an administrator of a self-hosted GitLab instance, you will need to enable the [GitHub integration](https://docs.gitlab.com/ee/integration/github.html) in order for users to follow the preferred import method described on this page. If this is not enabled, users can alternatively import their GitHub repositories using a [personal access token](https://docs.gitlab.com/ee/user/project/import/github.html#authorize-access-to-your-repositories-using-a-personal-access-token) from GitHub, but this method will not be able to associate all user activity (such as issues and pull requests) with matching GitLab users.
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The following aspects of a project are imported:
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* Repository description (GitLab.com & 7.7+)
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* Git repository data (GitLab.com & 7.7+)
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* Issues (GitLab.com & 7.7+)
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* Pull requests (GitLab.com & 8.4+)
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* Wiki pages (GitLab.com & 8.4+)
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* Milestones (GitLab.com & 8.7+)
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* Labels (GitLab.com & 8.7+)
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* Release note descriptions (GitLab.com & 8.12+)
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* Pull request review comments (GitLab.com & 10.2+)
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* Regular issue and pull request comments
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>As an administrator of a self-hosted GitLab instance, you can also use the [GitHub rake task](https://docs.gitlab.com/ee/administration/raketasks/github_import.html) to import projects from GitHub without the constraints of a Sidekiq worker.
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References to pull requests and issues are preserved (GitLab.com & 8.7+), and
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each imported repository defaults to `private` but [can be made public](../settings/index.md#sharing-and-permissions), as needed.
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* The following aspects of a project are imported:
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* repository description (GitLab.com & 7.7+)
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* Git repository data (GitLab.com & 7.7+)
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* issues (GitLab.com & 7.7+)
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* pull requests (GitLab.com & 8.4+)
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* wiki pages (GitLab.com & 8.4+)
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* milestones (GitLab.com & 8.7+)
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* labels (GitLab.com & 8.7+)
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* release note descriptions (GitLab.com & 8.12+)
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* pull request review comments (GitLab.com & 10.2+)
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* regular issue and pull request comments
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* References to pull requests and issues are preserved (GitLab.com & 8.7+)
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* Each imported repository defaults to ‘private’ but can be made public, as needed.
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## How it works
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## How it works
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When issues and pull requests are being imported, the importer attempts to find their GitHub authors and
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assignees in the database of the GitLab instance (note that pull requests are called "merge requests" in GitLab).
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When issues and pull requests are being imported, the importer attempts to find their GitHub authors and assignees in the database of the GitLab instance. (Note that pull requests are called "merge requests" in GitLab.)
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For this association to succeed, prior to the import, each GitHub author and assignee in the repository must
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have either previously logged in to a GitLab account using the GitHub icon **or** have a GitHub account with
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a [public email address](https://help.github.com/articles/setting-your-commit-email-address-on-github/) that
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matches their GitLab account's email address.
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For this association to succeed, prior to the import, each GitHub author and assignee in the repository must have either previously logged in to a GitLab account using the GitHub icon **or** have a GitHub account with a [public email address](https://help.github.com/articles/setting-your-commit-email-address-on-github/) that matches their GitLab account’s email address.
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If a user referenced in the project is not found in GitLab's database, the project creator (typically the user
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that initiated the import process) is set as the author/assignee, but a note on the issue mentioning the original
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GitHub author is added.
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If a user referenced in the project is not found in GitLab's database, the project creator (typically the user that initiated the import process) is set as the author/assignee, but a note on the issue mentioning the original GitHub author is added.
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The importer creates any new namespaces (groups) if they do not exist, or, if the namespace is taken, the
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repository is imported under the namespace of the user who initiated the import process. The namespace/repository
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name can also be edited, with the proper permissions.
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The importer creates any new namespaces (groups) if they do not exist, or, if the namespace is taken, the repository is imported under the namespace of the user who initiated the import process. The namespace/repository name can also be edited, with the proper permissions.
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The importer will also import branches on forks of projects related to open pull requests. These branches will be
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imported with a naming scheme similar to `GH-SHA-username/pull-request-number/fork-name/branch`. This may lead to
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a discrepancy in branches compared to those of the GitHub repository.
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The importer will also import branches on forks of projects related to open pull requests. These branches will be imported with a naming scheme similar to GH-`SHA-Username/Pull-Request-number/fork-name/branch`. This may lead to a discrepancy in branches compared to those of the GitHub repository.
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For additional technical details, you can refer to the
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[GitHub Importer](../../../development/github_importer.md "Working with the GitHub importer")
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developer documentation.
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For additional technical details, you can refer to the [GitHub Importer][gh-import-dev-docs] developer documentation.
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## Import your GitHub repository into GitLab
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## Import your GitHub repository into GitLab
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### Use the GitHub integration
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### Using the GitHub integration
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Before you begin, ensure that any GitHub users who you want to map to GitLab users have either:
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1. A GitLab account that has logged in using the GitHub icon.
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1. A GitLab account that has logged in using the GitHub icon
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\- or -
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2. A GitLab account with an email address that matches the [public email address](https://help.github.com/articles/setting-your-commit-email-address-on-github/) of the GitHub user.
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2. A GitLab account with an email address that matches the [public email address](https://help.github.com/articles/setting-your-commit-email-address-on-github/) of the GitHub user
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User-matching attempts occur in that order, and if a user is not identified either way, the activity is associated with the user account that is performing the import.
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User-matching attempts occur in that order, and if a user is not identified either way, the activity is associated with
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the user account that is performing the import.
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Note: If you are using a self-hosted GitLab instance, this process requires that you have configured the [GitHub integration][gh-import].
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NOTE: **Note:**
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If you are using a self-hosted GitLab instance, this process requires that you have configured the
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[GitHub integration][gh-import].
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1. From the top navigation bar, click **+** and select **New Project**.
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1. From the top navigation bar, click **+** and select **New project**.
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2. Select the **Import project** tab and then select **GitHub**.
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3. Select the first button to **List your GitHub repositories**. You are redirected to a page on github.com to authorize the GitLab application.
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4. Click **Authorize gitlabhq**. You are redirected back to GitLab’s Import page and all of your GitHub repositories are listed.
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5. Continue on to [select which repositories to import](#select-which-repositories-to-import).
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4. Click **Authorize gitlabhq**. You are redirected back to GitLab's Import page and all of your GitHub repositories are listed.
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5. Continue on to [selecting which repositories to import](#selecting-which-repositories-to-import).
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### Use a GitHub token
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### Using a GitHub token
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>**Note:** For a proper author/assignee mapping for issues and pull requests, the GitHub integration method (above) should be used instead of the personal access token. If you are using gitlab.com or a self-hosted GitLab instance with the GitHub integration enabled, that should be the preferred method to import your repositories. Read more in the [How it works](#how-it-works) section.
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NOTE: **Note:**
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For a proper author/assignee mapping for issues and pull requests, the [GitHub integration method (above)](#using-the-github-integration)
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should be used instead of the personal access token. If you are using GitLab.com or a self-hosted GitLab instance with the GitHub
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integration enabled, that should be the preferred method to import your repositories. Read more in the [How it works](#how-it-works) section.
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If you are not using the GitHub integration, you can still perform an authorization with GitHub to grant GitLab access your repositories:
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1. Go to [https://github.com/settings/tokens/new](https://github.com/settings/tokens/new).
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1. Go to https://github.com/settings/tokens/new
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2. Enter a token description.
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3. Select the repo scope.
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4. Click **Generate token**.
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5. Copy the token hash.
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6. Go back to GitLab and provide the token to the GitHub importer.
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7. Hit the **List Your GitHub Repositories** button and wait while GitLab reads your repositories' information. Once done, you'll be taken to the importer page to select the repositories to import.
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7. Hit the **List Your GitHub Repositories** button and wait while GitLab reads your repositories' information.
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Once done, you'll be taken to the importer page to select the repositories to import.
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### Select which repositories to import
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### Selecting which repositories to import
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After you have authorized access to your GitHub repositories, you are redirected to the GitHub importer page and your GitHub repositories are listed.
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After you have authorized access to your GitHub repositories, you are redirected to the GitHub importer page and
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your GitHub repositories are listed.
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1. By default, the proposed repository namespaces match the names as they exist in GitHub, but based on your permissions, you can choose to edit these names before you proceed to import any of them.
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1. By default, the proposed repository namespaces match the names as they exist in GitHub, but based on your permissions,
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you can choose to edit these names before you proceed to import any of them.
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2. Select the **Import** button next to any number of repositories, or select **Import all repositories**.
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3. The **Status** column shows the import status of each repository. You can choose to leave the page open and it will update in realtime or you can return to it later.
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3. The **Status** column shows the import status of each repository. You can choose to leave the page open and it will
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update in realtime or you can return to it later.
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4. Once a repository has been imported, click its GitLab path to open its GitLab URL.
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## Mirroring and pipeline status sharing
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Depending your GitLab tier, [project mirroring](../../../workflow/repository_mirroring.md) can be set up to keep your imported project in sync with its GitHub copy.
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Depending your GitLab tier, [project mirroring](../../../workflow/repository_mirroring.md) can be set up to keep
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your imported project in sync with its GitHub copy.
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Additionally you can configure GitLab to send pipeline status updates back GitHub with the [GitHub Project Integration](../integrations/github.md).
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Additionally, you can configure GitLab to send pipeline status updates back GitHub with the
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[GitHub Project Integration](https://docs.gitlab.com/ee/user/project/integrations/github.html). **[PREMIUM]**
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If you import your project using [CI/CD for external repo](../../../ci/ci_cd_for_external_repos/) then both of the above are automatically configured.
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If you import your project using [CI/CD for external repo](https://docs.gitlab.com/ee/ci/ci_cd_for_external_repos/), then both
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of the above are automatically configured. **[PREMIUM]**
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## Improving the speed of imports on self-hosted instances
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## Improving the speed of imports on self-hosted instances
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For large projects it may take a while to import all data. To reduce the time necessary you can increase the number of Sidekiq workers that process the following queues:
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NOTE: **Note:**
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Admin access to the GitLab server is required.
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For large projects it may take a while to import all data. To reduce the time necessary, you can increase the number of
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Sidekiq workers that process the following queues:
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* `github_importer`
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* `github_importer_advance_stage`
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For an optimal experience we recommend having at least 4 Sidekiq processes (each running a number of threads equal to the number of CPU cores) that *only* process these queues. We also recommend that these processes run on separate servers. For 4 servers with 8 cores this means you can import up to 32 objects (e.g. issues) in parallel.
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For an optimal experience, it's recommended having at least 4 Sidekiq processes (each running a number of threads equal
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to the number of CPU cores) that *only* process these queues. It's also recommended that these processes run on separate
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servers. For 4 servers with 8 cores this means you can import up to 32 objects (e.g., issues) in parallel.
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Reducing the time spent in cloning a repository can be done by increasing network throughput, CPU capacity, and disk performance (e.g. by using high performance SSDs) of the disks that store the Git repositories (for your GitLab instance). Increasing the number of Sidekiq workers will *not* reduce the time spent cloning repositories.
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Reducing the time spent in cloning a repository can be done by increasing network throughput, CPU capacity, and disk
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performance (e.g., by using high performance SSDs) of the disks that store the Git repositories (for your GitLab instance).
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Increasing the number of Sidekiq workers will *not* reduce the time spent cloning repositories.
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[gh-import]: ../../../integration/github.md "GitHub integration"
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[gh-rake]: ../../../administration/raketasks/github_import.md "GitHub rake task"
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[gh-integration]: #authorize-access-to-your-repositories-using-the-github-integration
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[gh-token]: #authorize-access-to-your-repositories-using-a-personal-access-token
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[gh-import-dev-docs]: ../../../development/github_importer.md "Working with the GitHub importer"
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