Configuring GitLab omniauth to use Atlassian Crowd for authentication - gitlab

Question

(Reposted here due to no response on Google group)
Probably missing something obvious but I cannot get GitLab CE 8.0.5 to use Crowd server 2.8.3 as an omniauth provider. GitLab doc and Google searches are not helping.
Can anyone either provide me with troubleshooting steps, their config (obfuscating passwords etc) or check my config below.
GitLab config:
gitlab_rails['omniauth_enabled'] = true
gitlab_rails['omniauth_allow_single_sign_on'] = true
# gitlab_rails['omniauth_auto_sign_in_with_provider'] = 'saml'
gitlab_rails['omniauth_block_auto_created_users'] = false
# gitlab_rails['omniauth_auto_link_ldap_user'] = false
gitlab_rails['omniauth_providers'] = [
{
"name" => "crowd",
"args" => {
"crowd_server_url" => "http://localhost:8095/crowd",
"application_name" => "crowd_gitlab",
"application_password" => "Password"
}
}
]
The Crowd application I have setup looks like:
Name: crowd_gitlab
Application type: Generic Application
Active: x
Password: Password
The crowd tab appears on the GitLab login page but the error I get is:
500
We're sorry, but something went wrong.
Note that the URL displayed during this error is http://localhost/users/auth/crowd/callback
Tried increaing generic tracing levels and looking through the logs on both Crowd and GitLab but cannot see anything obvious.

Answer 1

We're using Gitlab CE 7.7.2 and Crowd 2.8.2 successfully. I'm not sure if this changes with 8.0.5.
Our config is below
## OmniAuth settings
omniauth:
enabled: true
allow_single_sign_on: true
block_auto_created_users: true
providers:
- { name: 'crowd'
, strategy_class: 'OmniAuth::Strategies::Crowd'
, args: {
crowd_server_url: "http://crowd-server:8095/crowd",
application_name: "gitlab",
application_password: "PASSWORD"
}
}
We also force the Crowd login page as the default page for Gitlab, which was less confusing for people rather than displaying the default page and forcing them to click on the Crowd button.

Answer 2

Just looked at the features matrix and noticed that Crowd is only supported on EE. Doh!