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Authentication through GitHub

Overview

One of the login options for dex uses the GitHub OAuth2 flow to identify the end user through their GitHub account.

When a client redeems a refresh token through dex, dex will re-query GitHub to update user information in the ID Token. To do this, dex stores a readonly GitHub access token in its backing datastore. Users that reject dex's access through GitHub will also revoke all dex clients which authenticated them through GitHub.

Configuration

Register a new application with GitHub 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 following is an example of a configuration for examples/config-dev.yaml:

connectors:
- type: github
  id: github
  name: GitHub
  config:
    # Credentials can be string literals or pulled from the environment.
    clientID: $GITHUB_CLIENT_ID
    clientSecret: $GITHUB_CLIENT_SECRET
    redirectURI: http://127.0.0.1:5556/dex/callback
    # Optional organization to pull teams from, communicate through the
    # "groups" scope.
    #
    # NOTE: This is an EXPERIMENTAL config option and will likely change.
    org: my-oranization