The Generated host file contains "\n"
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
# HEAT_HOSTS_START - Do not edit manually within this section!
172.16.0.22 overcloud-controller-0.localdomain overcloud-controller-0
10.2.4.24 overcloud-controller-0.external.localdomain overcloud-controller-0.external
172.16.0.22 overcloud-controller-0.internalapi.localdomain overcloud-controller-0.internalapi
172.18.0.20 overcloud-controller-0.storage.localdomain overcloud-controller-0.storage
172.19.0.23 overcloud-controller-0.storagemgmt.localdomain overcloud-controller-0.storagemgmt
172.17.0.14 overcloud-controller-0.tenant.localdomain overcloud-controller-0.tenant
192.0.2.20 overcloud-controller-0.management.localdomain overcloud-controller-0.management
192.0.2.20 overcloud-controller-0.ctlplane.localdomain overcloud-controller-0.ctlplane
\n172.16.0.18 overcloud-controller-1.localdomain overcloud-controller-1
10.2.4.20 overcloud-controller-1.external.localdomain overcloud-controller-1.external
172.16.0.18 overcloud-controller-1.internalapi.localdomain overcloud-controller-1.internalapi
172.18.0.18 overcloud-controller-1.storage.localdomain overcloud-controller-1.storage
172.19.0.19 overcloud-controller-1.storagemgmt.localdomain overcloud-controller-1.storagemgmt
172.17.0.21 overcloud-controller-1.tenant.localdomain overcloud-controller-1.tenant
192.0.2.18 overcloud-controller-1.management.localdomain overcloud-controller-1.management
192.0.2.18 overcloud-controller-1.ctlplane.localdomain overcloud-controller-1.ctlplane
\n172.16.0.11 overcloud-controller-2.localdomain overcloud-controller-2
10.2.4.18 overcloud-controller-2.external.localdomain overcloud-controller-2.external
172.16.0.11 overcloud-controller-2.internalapi.localdomain overcloud-controller-2.internalapi
172.18.0.14 overcloud-controller-2.storage.localdomain overcloud-controller-2.storage
172.19.0.20 overcloud-controller-2.storagemgmt.localdomain overcloud-controller-2.storagemgmt
172.17.0.12 overcloud-controller-2.tenant.localdomain overcloud-controller-2.tenant
192.0.2.10 overcloud-controller-2.management.localdomain overcloud-controller-2.management
192.0.2.10 overcloud-controller-2.ctlplane.localdomain overcloud-controller-2.ctlplane
172.16.0.23 overcloud-compute-0.localdomain overcloud-compute-0
192.0.2.15 overcloud-compute-0.external.localdomain overcloud-compute-0.external
172.16.0.23 overcloud-compute-0.internalapi.localdomain overcloud-compute-0.internalapi
172.18.0.15 overcloud-compute-0.storage.localdomain overcloud-compute-0.storage
192.0.2.15 overcloud-compute-0.storagemgmt.localdomain overcloud-compute-0.storagemgmt
172.17.0.20 overcloud-compute-0.tenant.localdomain overcloud-compute-0.tenant
192.0.2.15 overcloud-compute-0.management.localdomain overcloud-compute-0.management
192.0.2.15 overcloud-compute-0.ctlplane.localdomain overcloud-compute-0.ctlplane
172.18.0.13 overcloud-cephstorage-0.localdomain overcloud-cephstorage-0
192.0.2.13 overcloud-cephstorage-0.external.localdomain overcloud-cephstorage-0.external
192.0.2.13 overcloud-cephstorage-0.internalapi.localdomain overcloud-cephstorage-0.internalapi
172.18.0.13 overcloud-cephstorage-0.storage.localdomain overcloud-cephstorage-0.storage
172.19.0.18 overcloud-cephstorage-0.storagemgmt.localdomain overcloud-cephstorage-0.storagemgmt
192.0.2.13 overcloud-cephstorage-0.tenant.localdomain overcloud-cephstorage-0.tenant
192.0.2.13 overcloud-cephstorage-0.management.localdomain overcloud-cephstorage-0.management
192.0.2.13 overcloud-cephstorage-0.ctlplane.localdomain overcloud-cephstorage-0.ctlplane
\n172.18.0.17 overcloud-cephstorage-1.localdomain overcloud-cephstorage-1
192.0.2.110 overcloud-cephstorage-1.external.localdomain overcloud-cephstorage-1.external
192.0.2.110 overcloud-cephstorage-1.internalapi.localdomain overcloud-cephstorage-1.internalapi
172.18.0.17 overcloud-cephstorage-1.storage.localdomain overcloud-cephstorage-1.storage
172.19.0.11 overcloud-cephstorage-1.storagemgmt.localdomain overcloud-cephstorage-1.storagemgmt
192.0.2.110 overcloud-cephstorage-1.tenant.localdomain overcloud-cephstorage-1.tenant
192.0.2.110 overcloud-cephstorage-1.management.localdomain overcloud-cephstorage-1.management
192.0.2.110 overcloud-cephstorage-1.ctlplane.localdomain overcloud-cephstorage-1.ctlplane
Seems to be os-collect-config
Mar 2 14:43:34 host-192-0-2-110 os-collect-config: \n172.16.0.71 overcloud- baremetal- 37.localdomain overcloud- baremetal- 37