Integrate with Terrakube

What is Terrakube

Terrakube is an open-source collaboration platform designed for managing remote Infrastructure-as-Code (IaC) operations with Terraform. It serves as an alternative to proprietary tools like Terraform Enterprise.

-- https://terrakube.io/

Preparation

The following placeholders are used in this guide:

• terrakube-dex.company is the FQDN of the Dex container of the Terrakube 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. :::

authentik configuration

To support the integration of Terrakube 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), the authorization flow to use for this provider, and the following required configurations.
  • Note the Client ID, Client Secret, and slug values because they will be required later.
  • Set a Strict redirect URI to https://terrakube-dex.company/dex/callback.
  • Select any available signing key.
• Configure Bindings (optional): you can 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.

Terrakube configuration

This guide assumes that you have environment variables $TERRAKUBE_OIDC_CLIENT_ID and $TERRAKUBE_OIDC_CLIENT_SECRET set up. You can hard-code values if your setup doesn’t support environment variables, but be aware that doing so is not recommended for security reasons.

1. Locate the Dex Configuration File Find the Dex configuration file, typically named config.yaml or config.docker.yaml. It’s usually located in the /etc/dex directory or the corresponding directory for a containerized setup.

2. Update the Dex Configuration To define the Terrakube OIDC connector, open the configuration file and add the following block:

   yamlCopy

   connectors:
       - type: oidc
         id: TerrakubeClient
         name: TerrakubeClient
         config:
             issuer: "https://authentik.company/application/o/<application_slug>/"
             clientID: $TERRAKUBE_OIDC_CLIENT_ID
             clientSecret: $TERRAKUBE_OIDC_CLIENT_SECRET
             redirectURI: "https://terrakube-dex.company/dex/callback"
             insecureEnableGroups: true
   

3. Set Environment Variables Add the following variables to your .env file, replacing them with the appropriate values for your Client ID and Client Secret:

   envCopy

   TERRAKUBE_OIDC_CLIENT_ID=*your Client ID*
   TERRAKUBE_OIDC_CLIENT_SECRET=*your Client Secret*
   

Configuration verification

To ensure that authentik is correctly configured with Terrakube, log out and log back in through authentik. Depending on the number of connectors you have set up, you should either be redirected to authentik or see a new button appear on the Dex login page.