Hi,

Having a 3-controllers HA setup, say one of the controller's harddrive gets wiped, I understand I can use ironic to rebuild the node? Is that the right procedure?

Although, when I do that (rebuild node with Ironic) I get a non-valid /etc/hosts file created on the recovered node: (Note the \n characters)

# HEAT_HOSTS_START - Do not edit manually within this section!
172.16.2.7      overcloud-controller-0.localdomain      overcloud-controller-0
10.0.0.4        overcloud-controller-0.external.localdomain     overcloud-controller-0.external
172.16.2.7      overcloud-controller-0.internalapi.localdomain  overcloud-controller-0.internalapi
172.16.1.7      overcloud-controller-0.storage.localdomain      overcloud-controller-0.storage
172.16.3.4      overcloud-controller-0.storagemgmt.localdomain  overcloud-controller-0.storagemgmt
172.16.0.7      overcloud-controller-0.tenant.localdomain       overcloud-controller-0.tenant
192.0.2.10      overcloud-controller-0.management.localdomain   overcloud-controller-0.management
192.0.2.10      overcloud-controller-0.ctlplane.localdomain     overcloud-controller-0.ctlplane
\n172.16.2.5    overcloud-controller-1.localdomain      overcloud-controller-1
10.0.0.6        overcloud-controller-1.external.localdomain     overcloud-controller-1.external
172.16.2.5      overcloud-controller-1.internalapi.localdomain  overcloud-controller-1.internalapi
172.16.1.13     overcloud-controller-1.storage.localdomain      overcloud-controller-1.storage
172.16.3.9      overcloud-controller-1.storagemgmt.localdomain  overcloud-controller-1.storagemgmt
172.16.0.14     overcloud-controller-1.tenant.localdomain       overcloud-controller-1.tenant
192.0.2.6       overcloud-controller-1.management.localdomain   overcloud-controller-1.management
192.0.2.6       overcloud-controller-1.ctlplane.localdomain     overcloud-controller-1.ctlplane
\n172.16.2.12   overcloud-controller-2.localdomain      overcloud-controller-2
10.0.0.14       overcloud-controller-2.external.localdomain     overcloud-controller-2.external
172.16.2.12     overcloud-controller-2.internalapi.localdomain  overcloud-controller-2.internalapi
172.16.1.20     overcloud-controller-2.storage.localdomain      overcloud-controller-2.storage
172.16.3.12     overcloud-controller-2.storagemgmt.localdomain  overcloud-controller-2.storagemgmt
172.16.0.19     overcloud-controller-2.tenant.localdomain       overcloud-controller-2.tenant
192.0.2.8       overcloud-controller-2.management.localdomain   overcloud-controller-2.management
192.0.2.8       overcloud-controller-2.ctlplane.localdomain     overcloud-controller-2.ctlplane

In addition, after fixing this I notice I do not have a /root/.my.cnf and that causes problems with galera. I copy it manually from one of the other controllers, but pcs status reports:

* galera_promote_0 on overcloud-controller-0 'unknown error' (1): call=57, status=complete, exitreason='Failed initial monitor action',

Any help on this is most welcome.