Comment 1 for bug 1709631

I'm not entirely sure, but perhaps somewhere in https://docs.openstack.org/openstack-ansible/latest/admin/maintenance-tasks/scale-environment.html we should add a section for replacing containers.

To destroy containers, use the following:

cd /opt/openstack-ansible/playbooks
openstack-ansible lxc-containers-destroy --limit <container name|container group>

You will be asked two questions:

Are you sure you want to destroy the LXC containers?
Are you sure you want to destroy the LXC container data?

The first will just remove the container but leave the data in the bind mounts and logs. The second will remove the data in the bind mounts and logs too.

WARNING:
If you remove the containers and data for the entire galera_server container group you will lose all your databases! Also, if you destroy the first container in many host groups you will lose other important items like certificates, keys, etc. Be sure that you understand what you're doing when using this tool.

To create the containers again, execute the following:

cd /opt/openstack-ansible/playbooks
openstack-ansible lxc-containers-destroy --limit lxc_hosts,<container name|container group>

The lxc_hosts host group must be included as the playbook and roles executed require the use of facts from the hosts.