Hi,

Probably https://docs.openstack.org/keystone/latest/admin/federation/introduction.html is de best place to start.

Although only using the Default domain, we did something (using Mellon) like: https://ivarclemens.nl/using-keycloak-with-openstack/

Or, are you looking for something different?

Cheers,
Kees

On 30-07-2025 11:58, amine belroul wrote:

Is there any detailed docs can help me to integrate openstack with openid? Please multi domains and multi projects.