Github user SarunasG commented on the issue:
https://github.com/apache/zeppelin/pull/2373
Hi @andreaTP, All,
Could anyone please help me to understand this pull request better ?
If I integrate all the changes as per this pull request and amend the
shiro.ini file with OIDC (pac4j) Keycloak configuration settings, I do not get
it working due to a couple of reasons:
1) If I keep `/** = authc` in [urls] uncommented I get Zeppelin's login
prompt to enter username and password - so I am not redirected to Keycloak...
In addition if I enter username and password which is registered in Keycloak I
get an exception:
```
org.apache.shiro.authc.pam.UnsupportedTokenException: Realm
[io.buji.pac4j.realm.Pac4jRealm@5e7a3fcc] does not support authentication token
[org.apache.shiro.authc.UsernamePasswordToken - sarunas, rememberMe=false].
Please ensure that the appropriate Realm implementation is configured correctly
or that the realm accepts AuthenticationTokens of this type.
```
2) If I comment `/** = authc` in [urls] section out, nothing happens as
Zeppelin's main screen is loaded without any authentication nor transferring to
Keycloak... and it is supposed as to be-no auth required.
My shiro.ini example:
<details>
<summary>Click to expand</summary>
<p><pre>
[main]
securityManager.realms = $pac4jRealm
oidcConfig = org.pac4j.oidc.config.OidcConfiguration
oidcConfig.discoveryURI =
http://localhost:8080/auth/realms/demo/.well-known/openid-configuration
oidcConfig.clientId = zeppelin
oidcConfig.secret = 1baabe32-50bc-49c4-9ac3-a303a9f953c5
oidcConfig.clientAuthenticationMethodAsString = client_secret_basic
oidcClient = org.pac4j.oidc.client.OidcClient
oidcClient.configuration = $oidcConfig
clients = org.pac4j.core.client.Clients
clients.callbackUrl = http://localhost:8082/api/callback
clients.clients = $oidcClient
#requireRoleAdmin =
org.pac4j.core.authorization.authorizer.RequireAnyRoleAuthorizer
#requireRoleAdmin.elements = zeppelin_group
config = org.pac4j.core.config.Config
config.clients = $clients
config.authorizers = admin:$requireRoleAdmin
pac4jRealm = io.buji.pac4j.realm.Pac4jRealm
pac4jSubjectFactory = io.buji.pac4j.subject.Pac4jSubjectFactory
securityManager.subjectFactory = $pac4jSubjectFactory
oidcSecurityFilter = io.buji.pac4j.filter.SecurityFilter
oidcSecurityFilter.config = $config
oidcSecurityFilter.clients = oidcClient<br>
callbackFilter = io.buji.pac4j.filter.CallbackFilter
callbackFilter.defaultUrl = http://localhost:8082
callbackFilter.config = $config<br>
[urls]
/api/callback = callbackFilter
#/** = anon
/** = authc
</pre></p>
</details>
-----------------
So:
- Has anyone managed to get Zeppelin integrated with e.g. Keycloak by
means of shiro + pac4j oidc ?
- Can anyone share example of their shiro.ini file if so ?
- Is my understanding then correct that changes from this pull request are
not enough for getting Zeppelin->pac4j-oidc->Keycloak mix working, we need some
code adjustments in zeppelin-web project?
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