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coder/docs/admin/external-auth.md
Muhammad Atif Ali 419eba5fb6 docs: restructure docs (#14421)
Closes #13434 
Supersedes #14182

---------

Co-authored-by: Ethan <39577870+ethanndickson@users.noreply.github.com>
Co-authored-by: Ethan Dickson <ethan@coder.com>
Co-authored-by: Ben Potter <ben@coder.com>
Co-authored-by: Stephen Kirby <58410745+stirby@users.noreply.github.com>
Co-authored-by: Stephen Kirby <me@skirby.dev>
Co-authored-by: EdwardAngert <17991901+EdwardAngert@users.noreply.github.com>
Co-authored-by: Edward Angert <EdwardAngert@users.noreply.github.com>
2024-10-05 10:52:04 -05:00

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# External Authentication
To add an external authentication provider, you'll need to create an OAuth
application. The following providers are supported:
- [GitHub](#github)
- [GitLab](https://docs.gitlab.com/ee/integration/oauth_provider.html)
- [BitBucket](https://support.atlassian.com/bitbucket-cloud/docs/use-oauth-on-bitbucket-cloud/)
- [Azure DevOps](https://learn.microsoft.com/en-us/azure/devops/integrate/get-started/authentication/oauth?view=azure-devops)
- [Azure DevOps (via Entra ID)](https://learn.microsoft.com/en-us/entra/architecture/auth-oauth2)
The next step is to configure the Coder server to use the OAuth application by
setting the following environment variables:
```env
CODER_EXTERNAL_AUTH_0_ID="<USER_DEFINED_ID>"
CODER_EXTERNAL_AUTH_0_TYPE=<github|gitlab|azure-devops|bitbucket-cloud|bitbucket-server|etc>
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxxxxx
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxxxxxx
# Optionally, configure a custom display name and icon
CODER_EXTERNAL_AUTH_0_DISPLAY_NAME="Google Calendar"
CODER_EXTERNAL_AUTH_0_DISPLAY_ICON="https://mycustomicon.com/google.svg"
```
The `CODER_EXTERNAL_AUTH_0_ID` environment variable is used for internal
reference. Therefore, it can be set arbitrarily (e.g., `primary-github` for your
GitHub provider).
## GitHub
> If you don't require fine-grained access control, it's easier to configure a
> GitHub OAuth app!
1. [Create a GitHub App](https://docs.github.com/en/apps/creating-github-apps/registering-a-github-app/registering-a-github-app)
- Set the callback URL to
`https://coder.example.com/external-auth/USER_DEFINED_ID/callback`.
- Deactivate Webhooks.
- Enable fine-grained access to specific repositories or a subset of
permissions for security.
![Register GitHub App](../images/admin/github-app-register.png)
2. Adjust the GitHub App permissions. You can use more or less permissions than
are listed here, this is merely a suggestion that allows users to clone
repositories:
![Adjust GitHub App Permissions](../images/admin/github-app-permissions.png)
| Name | Permission | Description |
| ------------- | ------------ | ------------------------------------------------------ |
| Contents | Read & Write | Grants access to code and commit statuses. |
| Pull requests | Read & Write | Grants access to create and update pull requests. |
| Workflows | Read & Write | Grants access to update files in `.github/workflows/`. |
| Metadata | Read-only | Grants access to metadata written by GitHub Apps. |
| Members | Read-only | Grants access to organization members and teams. |
3. Install the App for your organization. You may select a subset of
repositories to grant access to.
![Install GitHub App](../images/admin/github-app-install.png)
```env
CODER_EXTERNAL_AUTH_0_ID="USER_DEFINED_ID"
CODER_EXTERNAL_AUTH_0_TYPE=github
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxxxxx
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxxxxxx
```
## GitHub Enterprise
GitHub Enterprise requires the following environment variables:
```env
CODER_EXTERNAL_AUTH_0_ID="primary-github"
CODER_EXTERNAL_AUTH_0_TYPE=github
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxxxxx
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxxxxxx
CODER_EXTERNAL_AUTH_0_VALIDATE_URL="https://github.example.com/api/v3/user"
CODER_EXTERNAL_AUTH_0_AUTH_URL="https://github.example.com/login/oauth/authorize"
CODER_EXTERNAL_AUTH_0_TOKEN_URL="https://github.example.com/login/oauth/access_token"
```
## Bitbucket Server
Bitbucket Server requires the following environment variables:
```env
CODER_EXTERNAL_AUTH_0_ID="primary-bitbucket-server"
CODER_EXTERNAL_AUTH_0_TYPE=bitbucket-server
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxx
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxx
CODER_EXTERNAL_AUTH_0_AUTH_URL=https://bitbucket.domain.com/rest/oauth2/latest/authorize
```
## Azure DevOps
Azure DevOps requires the following environment variables:
```env
CODER_EXTERNAL_AUTH_0_ID="primary-azure-devops"
CODER_EXTERNAL_AUTH_0_TYPE=azure-devops
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxxxxx
# Ensure this value is your "Client Secret", not "App Secret"
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxxxxxx
CODER_EXTERNAL_AUTH_0_AUTH_URL="https://app.vssps.visualstudio.com/oauth2/authorize"
CODER_EXTERNAL_AUTH_0_TOKEN_URL="https://app.vssps.visualstudio.com/oauth2/token"
```
## Azure DevOps (via Entra ID)
Azure DevOps (via Entra ID) requires the following environment variables:
```env
CODER_EXTERNAL_AUTH_0_ID="primary-azure-devops"
CODER_EXTERNAL_AUTH_0_TYPE=azure-devops-entra
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxxxxx
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxxxxxx
CODER_EXTERNAL_AUTH_0_AUTH_URL="https://login.microsoftonline.com/<TENANT ID>/oauth2/authorize"
```
> Note: Your app registration in Entra ID requires the `vso.code_write` scope
## GitLab self-managed
GitLab self-managed requires the following environment variables:
```env
CODER_EXTERNAL_AUTH_0_ID="primary-gitlab"
CODER_EXTERNAL_AUTH_0_TYPE=gitlab
# This value is the "Application ID"
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxxxxx
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxxxxxx
CODER_EXTERNAL_AUTH_0_VALIDATE_URL="https://gitlab.company.org/oauth/token/info"
CODER_EXTERNAL_AUTH_0_AUTH_URL="https://gitlab.company.org/oauth/authorize"
CODER_EXTERNAL_AUTH_0_TOKEN_URL="https://gitlab.company.org/oauth/token"
CODER_EXTERNAL_AUTH_0_REGEX=gitlab\.company\.org
```
## Gitea
```env
CODER_EXTERNAL_AUTH_0_ID="gitea"
CODER_EXTERNAL_AUTH_0_TYPE=gitea
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxxxxxx
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxxxxxx
# If self managed, set the Auth URL to your Gitea instance
CODER_EXTERNAL_AUTH_0_AUTH_URL="https://gitea.com/login/oauth/authorize"
```
The Redirect URI for Gitea should be
https://coder.company.org/external-auth/gitea/callback
## Self-managed git providers
Custom authentication and token URLs should be used for self-managed Git
provider deployments.
```env
CODER_EXTERNAL_AUTH_0_AUTH_URL="https://github.example.com/oauth/authorize"
CODER_EXTERNAL_AUTH_0_TOKEN_URL="https://github.example.com/oauth/token"
CODER_EXTERNAL_AUTH_0_VALIDATE_URL="https://your-domain.com/oauth/token/info"
CODER_EXTERNAL_AUTH_0_REGEX=github\.company\.org
```
> Note: The `REGEX` variable must be set if using a custom git domain.
## JFrog Artifactory
See [this](../admin/integrations/jfrog-artifactory.md) guide on instructions on
how to set up for JFrog Artifactory.
## Custom scopes
Optionally, you can request custom scopes:
```env
CODER_EXTERNAL_AUTH_0_SCOPES="repo:read repo:write write:gpg_key"
```
## Multiple External Providers (enterprise) (premium)
Multiple providers are an Enterprise feature.
[Learn more](https://coder.com/pricing#compare-plans). Below is an example
configuration with multiple providers.
```env
# Provider 1) github.com
CODER_EXTERNAL_AUTH_0_ID=primary-github
CODER_EXTERNAL_AUTH_0_TYPE=github
CODER_EXTERNAL_AUTH_0_CLIENT_ID=xxxxxx
CODER_EXTERNAL_AUTH_0_CLIENT_SECRET=xxxxxxx
CODER_EXTERNAL_AUTH_0_REGEX=github.com/org
# Provider 2) github.example.com
CODER_EXTERNAL_AUTH_1_ID=secondary-github
CODER_EXTERNAL_AUTH_1_TYPE=github
CODER_EXTERNAL_AUTH_1_CLIENT_ID=xxxxxx
CODER_EXTERNAL_AUTH_1_CLIENT_SECRET=xxxxxxx
CODER_EXTERNAL_AUTH_1_REGEX=github.example.com
CODER_EXTERNAL_AUTH_1_AUTH_URL="https://github.example.com/login/oauth/authorize"
CODER_EXTERNAL_AUTH_1_TOKEN_URL="https://github.example.com/login/oauth/access_token"
CODER_EXTERNAL_AUTH_1_VALIDATE_URL="https://github.example.com/api/v3/user"
```
To support regex matching for paths (e.g. github.com/org), you'll need to add
this to the
[Coder agent startup script](https://registry.terraform.io/providers/coder/coder/latest/docs/resources/agent#startup_script):
```shell
git config --global credential.useHttpPath true
```