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Matrix Synapse

What is Matrix Synapse​

From https://matrix.org/

note

Matrix is an open source project that publishes the Matrix open standard for secure, decentralised, real-time communication, and its Apache licensed reference implementations.

Preparation​

The following placeholders will be used:

  • matrix.company is the FQDN of the Matrix install.
  • authentik.company is the FQDN of the authentik install.

Create an application in authentik. Create an OAuth2/OpenID provider with the following parameters:

  • Client Type: Confidential
  • Scopes: OpenID, Email and Profile
  • Signing Key: Select any available key
  • Redirect URIs: https://matrix.company/_synapse/client/oidc/callback

Note the Client ID and Client Secret values. Create an application, using the provider you've created above. Note the slug of the application you've created.

Matrix​

Add the following block to your Matrix config

info

For more info, see https://matrix-org.github.io/synapse/latest/openid.html?highlight=authentik#authentik

oidc_providers:
    - idp_id: authentik
      idp_name: authentik
      discover: true
      issuer: "https://authentik.company/application/o/app-slug/"
      client_id: "*client id*"
      client_secret: "*client secret*"
      scopes:
          - "openid"
          - "profile"
          - "email"
      user_mapping_provider:
          config:
              localpart_template: "{{ user.preferred_username }}"
              display_name_template: "{{ user.name|capitalize }}"