Home OpenStack-Ansible Installation Guide
Use the following procedure to add a compute host to an operational cluster.
Configure the host as a target host. See Chapter 3, *Target hosts* for more information.
Edit the /etc/openstack_deploy/openstack_user_config.yml file and add the host to the compute_hosts stanza.
If necessary, also modify the used_ips stanza.
Run the following commands to add the host. Replace NEW_HOST_NAME with the name of the new host.
# cd /opt/openstack-ansible/playbooks
# openstack-ansible setup-everything.yml --limit NEW_HOST_NAME