78 lines
2.5 KiB
Markdown
78 lines
2.5 KiB
Markdown
---
|
|
stage: Manage
|
|
group: Authentication and Authorization
|
|
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
|
|
---
|
|
|
|
# CAS OmniAuth provider (deprecated) **(FREE SELF)**
|
|
|
|
WARNING:
|
|
This feature was [deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/369127) in GitLab 15.3 and is planned for
|
|
removal in 16.0.
|
|
|
|
To enable the CAS OmniAuth provider you must register your application with your
|
|
CAS instance. This requires the service URL GitLab supplies to CAS. It should be
|
|
something like: `https://gitlab.example.com:443/users/auth/cas3/callback?url`.
|
|
Handling for Single Logout (SLO) is enabled by default, so you only have to
|
|
configure CAS for back-channel logout.
|
|
|
|
1. On your GitLab server, open the configuration file.
|
|
|
|
For Omnibus package:
|
|
|
|
```shell
|
|
sudo editor /etc/gitlab/gitlab.rb
|
|
```
|
|
|
|
For installations from source:
|
|
|
|
```shell
|
|
cd /home/git/gitlab
|
|
|
|
sudo -u git -H editor config/gitlab.yml
|
|
```
|
|
|
|
1. See [Configure initial settings](omniauth.md#configure-initial-settings) for initial settings.
|
|
|
|
1. Add the provider configuration:
|
|
|
|
For Omnibus package:
|
|
|
|
```ruby
|
|
gitlab_rails['omniauth_providers'] = [
|
|
{
|
|
name: "cas3",
|
|
label: "Provider name", # optional label for login button, defaults to "Cas3"
|
|
args: {
|
|
url: "CAS_SERVER",
|
|
login_url: "/CAS_PATH/login",
|
|
service_validate_url: "/CAS_PATH/p3/serviceValidate",
|
|
logout_url: "/CAS_PATH/logout"
|
|
}
|
|
}
|
|
]
|
|
```
|
|
|
|
For installations from source:
|
|
|
|
```yaml
|
|
- { name: 'cas3',
|
|
label: 'Provider name', # optional label for login button, defaults to "Cas3"
|
|
args: {
|
|
url: 'CAS_SERVER',
|
|
login_url: '/CAS_PATH/login',
|
|
service_validate_url: '/CAS_PATH/p3/serviceValidate',
|
|
logout_url: '/CAS_PATH/logout' } }
|
|
```
|
|
|
|
1. Change 'CAS_PATH' to the root of your CAS instance (such as `cas`).
|
|
|
|
1. If your CAS instance does not use default TGC lifetimes, update the `cas3.session_duration` to at least the current TGC maximum lifetime. To explicitly disable SLO, regardless of CAS settings, set this to 0.
|
|
|
|
1. Save the configuration file.
|
|
|
|
1. [Reconfigure](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure) or
|
|
[restart GitLab](../administration/restart_gitlab.md#installations-from-source) for the changes to
|
|
take effect if you installed GitLab via Omnibus or from source respectively.
|
|
|
|
On the sign in page there should now be a CAS tab in the sign in form.
|