123

undercloud.conf:

undercloud_public_host = 192.168.24.2
undercloud_admin_host = 192.168.24.3
local_ip = 192.168.24.1/24
network_gateway = 192.168.24.1

/etc/hosts:
127.0.0.1 undercloud.localdomain undercloud localhost localhost.localdomain localhost4 localhost4.localdomain4
::1        localhost localhost.localdomain localhost6 localhost6.localdomain6

# HEAT_HOSTS_START - Do not edit manually within this section!

192.168.24.1 undercloud.undercloud undercloud
192.168.24.1 undercloud.storage.undercloud undercloud.storage
192.168.24.1 undercloud.storagemgmt.undercloud undercloud.storagemgmt
192.168.24.1 undercloud.internalapi.undercloud undercloud.internalapi
192.168.24.1 undercloud.tenant.undercloud undercloud.tenant
192.168.24.1 undercloud.external.undercloud undercloud.external
192.168.24.1 undercloud.management.undercloud undercloud.management
192.168.24.1 undercloud.ctlplane.undercloud undercloud.ctlplane