With the default backend (file), Glance is deployed on a single controller, because it uses a local Docker volume to store Glance images. This is explained in the documentation [1]: "By default when using file backend only one glance-api container can be running". See also the definition of glance_api_hosts in ansible/group_vars/all.yml.

If you set glance_file_datadir_volume to a non-default path, it is assumed to be on shared storage and kolla-ansible will automatically use all glance-api group members.

You can also switch to another backend such as Ceph or Swift.

[1] https://docs.openstack.org/kolla-ansible/latest/reference/shared-services/glance-guide.html

On Thu, 21 Jul 2022 at 10:57, A Monster <amonster369@gmail.com> wrote:

I've deployed openstack xena using kolla ansible on a centos 8 stream cluster, using two controller nodes, however I found out after the deployment that glance api is not available in one node, I tried redeploying but  I got the same behavior, although the deployment finished without displaying any error.

Thank you. Regards