Configure Keycloak as an Identity Provider in ZITADEL

import GeneralConfigDescription from './_general_config_description.mdx'; import Intro from './_intro.mdx'; import CustomLoginPolicy from './_custom_login_policy.mdx'; import IDPsOverview from './_idps_overview.mdx'; import Activate from './_activate.mdx'; import TestSetup from './_test_setup.mdx';

<Intro components={props.components} provider="Keycloak"/>

Open the Generic OIDC Provider Template

<IDPsOverview components={props.components} templates="Generic OIDC"/>

Click on the ZITADEL Callback URL to copy it to your clipboard. You will have to paste it in the Keycloak Client later.

Keycloak Configuration

Register a new client

1. Login to your Keycloak account and go to the clients list: $KEYCLOAK-DOMAIN/auth/admin/$REALM/console/#/$REALM/clients
2. Click on "Create Client"
3. Choose OpenID Connect as Client Type and give your client an ID
4. Enable Client authentication and the standard flow and direct access grants as authentication flow
5. Paste the ZITADEL Callback URL you copied before to the redirect URIs
6. Go to the credentials tab and copy the secret

ZITADEL settings

1. Go back to the Generic OIDC Provider template you opened before in ZITADEL.
2. Add the client ID and secret created before on your Keycloak Client.
3. Give the provider a name, e.g. Keycloak. This name will be displayed on the login screen button.
4. Add the issuer URL of your Keycloak realm with the path /auth/realms/$REALM, e.g. https://lemur-0.cloud-iam.com/auth/realms/acme

You can optionally configure the following settings. A useful default will be filled if you don't change anything.

Scopes: The scopes define which scopes will be sent to the provider, openid, profile, and email are prefilled. This information will be taken to create/update the user within ZITADEL. ZITADEL ensures that at least the openid-scope is always sent.

Use PKCE: If enabled, the provider will use Proof Key for Code Exchange (PKCE) to secure the authorization code flow in addition to the client secret.

<GeneralConfigDescription components={props.components} provider_account="Keycloak account" />

Activate IdP

<Activate components={props.components} />

Ensure your Login Policy allows External IDPs

<CustomLoginPolicy components={props.components} />

Test the setup

<TestSetup components={props.components} loginscreen="your Keycloak login"/>