Integrate with Gravity

What is Gravity

Gravity is a fully-replicated DNS, DHCP, and TFTP server powered by etcd, offering features like built-in caching, ad/privacy blocking, automatic DNS registration, and metric tracking.

-- https://gravity.beryju.io/

Preparation

The following placeholders are used in this guide:

• gravity.company is the FQDN of the Gravity installation.
• authentik.company is the FQDN of the authentik installation.

:::info This documentation lists only the settings that you need to change from their default values. Be aware that any changes other than those explicitly mentioned in this guide could cause issues accessing your application. :::

:::info Gravity automatically triggers SSO authentication when configured. To prevent this behavior, log in using the following URL: https://gravity.company/ui/?local. :::

authentik configuration

To support the integration of Gravity with authentik, you need to create an application/provider pair in authentik.

Create an application and provider in authentik

1. Log in to authentik as an administrator and open the authentik Admin interface.
2. Navigate to Applications > Applications and click Create with Provider to create an application and provider pair. (Alternatively you can first create a provider separately, then create the application and connect it with the provider.)

• Application: Provide a descriptive name, an optional group for the type of application, the policy engine mode, and optional UI settings.
• Choose a Provider type: Select OAuth2/OpenID Connect as the provider type.
• Configure the Provider: Provide a name (or accept the auto-provided name), choose the authorization flow for this provider, and configure the following required settings:
  • Note the Client ID, Client Secret, and slug values because they will be required later.
  • Set a Strict redirect URI to https://gravity.company/auth/oidc/callback.
  • Select any available signing key.
• Configure Bindings (optional): Create a binding (policy, group, or user) to manage the listing and access to applications on a user's My applications page.

3. Click Submit to save the new application and provider.

Gravity configuration

1. From the Gravity administrative interface, navigate to Cluster > Roles and click API.
2. Under the OIDC sub-section, configure the following values:

• Issuer: https://authentik.company/application/o/<application_slug>/
• Client ID: Your Client ID from authentik
• Client Secret: Your Client Secret from authentik
• Redirect URL: https://gravity.company/auth/oidc/callback

3. Click Update to save and apply your configuration.

Configuration verification

To verify integration with authentik, log out of Gravity and attempt to visit the login page. You should be automatically redirected to authentik.