Can't 'argocd login' with KeyCloak

[Drugoy]

We are using KeyCloak and I can login via web just fine.
But running argocd login --insecure ${argocd_host} -sso from console produces this log:

WARN[0000] Failed to invoke grpc call. Use flag --grpc-web in grpc calls. To avoid this warning message, use flag --grpc.web.
Opening browser for authentication
Performing authorization_code flow login: https://${our_sso_host}/auth/realms/${realm_for_argo}/protocol/openid-connect/auth?access_type=offline&client_id=argocd&code_challenge=${some_hash}&code_challenge_method=S256&redirect_uri=http%3A%2F%2Flocalhost%3A8085%2Fauth%2fcallback&response_type=code&scope=openid+profile+email+groups+offline_access&state=${some_short_hash}
FATA[0002] oauth2: cannot fetch token: 401 Unauthorized

The browser opens KeyCloak page prompting login + password, I enter them once and then get redirected to http://localhost:8085/auth/callback?state=${some_short_hash}&session_state=${some_uid}&code=${two_uids_concatenated_with_dot}
which says:

oauth2: cannot fetch token: 401 Unauthorized
Response: {"error":"unauthorized_client","error_description":"Client secret not provided in request"}

[crenshaw-dev]

I'm a bit of an OIDC noob, but I believe the problem is that Keycloak expects the CLI to send a "client secret," which the client does not hold. I think that the CLI is a "public client" in the language of the Keycloak docs. Perhaps "public client" needs to be enabled on the Keycloak side.

[crenshaw-dev]

The fact that you can log in via the UI makes me second-guess myself though...

[anthony-zawacki]

We use keycloak + argocd and could never get the -sso to work because it requires launching a browser. In the end, we use keycloak to log into the argocd web UI, but in a pod at the command line we use the argocd admin user and password and not the keycloak-based login, like this:

./argocd login argo-cd-argocd-server --grpc-web --plaintext --username=admin --password=****

where the password is the admin.password configured in the argocd-secret.

The same secret typically has a key called oidc.keycloak.clientSecret configured, it's just that the argocd command line utility doesn't make use of the oidc configuration when using -sso even though you'd expect it to do so.

[Drugoy]

@anthony-zawacki basically confirmed the ticket, we are experiencing the same.

[RossComputerGuy]

I'm also having the same problem, trying to get Keycloak to work with my setup but it dumps me back on the login screen. This is the configuration of how I deploy ArgoCD.

[Blackclaws]

Argocd CLI login currently requires a public client, because contrary to expectations the login is not proxied via the webinterface which would be able to hold a client secret.

[Blackclaws]

Related: #11025

[862902354]

相关：#11025

Hi!
The keycloak 20 version has no access type: public option. How do you solve it?

Argocd CLI 登录当前需要公共客户端，因为与预期相反，登录不是通过能够保存客户端机密的 Web 界面代理的。

[Blackclaws]

相关：#11025

Hi! The keycloak 20 version has no access type: public option. How do you solve it?

Argocd CLI 登录当前需要公共客户端，因为与预期相反，登录不是通过能够保存客户端机密的 Web 界面代理的。

From the keycloak docs:

Capability Config

Client authentication

    The type of OIDC client.

        ON

        For server-side clients that perform browser logins and require client secrets when making an Access Token Request. This setting should be used for server-side applications.

        OFF

        For client-side clients that perform browser logins. As it is not possible to ensure that secrets can be kept safe with client-side clients, it is important to restrict access by configuring correct redirect URIs.

Set it to OFF

[nlucansk]

相关：#11025

Hi! The keycloak 20 version has no access type: public option. How do you solve it?

Argocd CLI 登录当前需要公共客户端，因为与预期相反，登录不是通过能够保存客户端机密的 Web 界面代理的。

From the keycloak docs:

Capability Config

Client authentication

    The type of OIDC client.

        ON

        For server-side clients that perform browser logins and require client secrets when making an Access Token Request. This setting should be used for server-side applications.

        OFF

        For client-side clients that perform browser logins. As it is not possible to ensure that secrets can be kept safe with client-side clients, it is important to restrict access by configuring correct redirect URIs.

Set it to OFF

Not working for me
I am currently getting

UI SSO access works just fine, only CLI is ❌

[zentavr]

@nlucansk the URLs inside Keykloak client config shoud be adjusted. like this: #12124 (comment)