Hello. I wrote these steps for people who met my scenario. 1. Deploy a new cluster with the same node name. 2. Restore DB as *https://docs.openstack.org/kolla-ansible/latest/admin/mariadb-backup-and-res... <https://docs.openstack.org/kolla-ansible/latest/admin/mariadb-backup-and-restore.html>* 3. Remove keystone, keystone_fernet, keystone_ssh and remove keystone volume. 4. Reconfigure keystone 4. Restart containers in compute, storage node and network node(if we have) Nguyen Huu Khoi On Thu, Apr 11, 2024 at 4:21 PM Nguyễn Hữu Khôi <nguyenhuukhoinw@gmail.com> wrote:

I think this problem relates to keystone fernet and placement uuid. I will update later. Nguyen Huu Khoi

On Thu, Apr 11, 2024 at 1:27 PM Nguyễn Hữu Khôi <nguyenhuukhoinw@gmail.com> wrote:

...

Hello.

I am testing a case when I lost all my openstack cluster. I just have a full db backup and volumes(my storage node still alive).

I deploy a new cluster with same node's name after that I recover db from backup and the cluster is up but I cannot see my instances.

When I click on instance tab or volume tab, I see errors:

[image: image.png]

I hope you will share experiences.

Nguyen Huu Khoi