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Authentication through Gitlab
Overview
GitLab is a web-based Git repository manager with wiki and issue tracking features, using an open source license, developed by GitLab Inc. One of the login options for dex uses the GitLab OAuth2 flow to identify the end user through their GitLab account. You can use this option with gitlab.com, GitLab community or enterprise edition.
When a client redeems a refresh token through dex, dex will re-query GitLab to update user information in the ID Token. To do this, dex stores a readonly GitLab access token in its backing datastore. Users that reject dex's access through GitLab will also revoke all dex clients which authenticated them through GitLab.
Configuration
Register a new application via User Settings -> Applications ensuring the callback URL is (dex issuer)/callback. For example if dex is listening at the non-root path https://auth.example.com/dex the callback would be https://auth.example.com/dex/callback.
The application requires the user to grant the read_user and openid scopes. The latter is required only if group membership is a desired claim.
The following is an example of a configuration for examples/config-dev.yaml:
connectors:
- type: gitlab
# Required field for connector id.
id: gitlab
# Required field for connector name.
name: GitLab
config:
# optional, default = https://gitlab.com
baseURL: https://gitlab.com
# Credentials can be string literals or pulled from the environment.
clientID: $GITLAB_APPLICATION_ID
clientSecret: $GITLAB_CLIENT_SECRET
redirectURI: http://127.0.0.1:5556/dex/callback