I would say that quite little to do OSA itself, but how to design services themselves.

Using config_overrides in OpenStack-Ansible allows you to define any service configuration you want.

So you can leverage nova_nova_conf_overrides for adding any arbitrary configuration to nova.conf and cinder_cinder_conf_overrides for cinder.conf.

Regarding redundancy - I can't really advice as I'm not really happy with any of approaches available due to one or another reason. We ended up with having disaster recovery instead implemented with cinder-backup to RGW (S3) storage in the different region. As it also supports incremental backups, which is quite neat

On Sat, Jul 29, 2023, 17:12 Murilo Morais <murilo@evocorp.com.br> wrote:

Good morning everybody!

I'm trying to raise a scenario with redundancy at the storage level.
I'm using CEPH with RBD-mirror.

Cinder has a pretty clear documentation about it, but I didn't find anything about Glance and the "nova_libvirt_images_rbd_pool" and the "cinder_service_backup_driver".

What would be the best approach?
Only use Cinder with Mirror?
If by chance the "nova_libvirt_images_rbd_pool" dies, if you are using config-drive the disk will die, correct? In this case, would it be better to leave local?

I can't see what would be the best scenario for Failover cases with OSA.

Thanks in advance!