Version: 4.8.0-0.nightly-2021-04-30-201824

$ openshift-install version
4.8.0-0.nightly-2021-04-30-201824

Platform:
baremetal

Please specify:
IPI

What happened?

Node coming up from a reboot with 'localhost' hostname in a baremetal IPI cluster.

[root@cnfdd5-installer ~]# oc get node
NAME                                             STATUS                        ROLES                     AGE     VERSION
cnfdd5.clus2.t5g.lab.eng.bos.redhat.com          Ready                         worker,worker-cnf         5h31m   v1.21.0-rc.0+aa1dc1f
cnfdd7.clus2.t5g.lab.eng.bos.redhat.com          Ready                         worker,worker-cnf         5h34m   v1.21.0-rc.0+aa1dc1f
cnfdd8.clus2.t5g.lab.eng.bos.redhat.com          Ready                         worker,worker-duprofile   5h38m   v1.21.0-rc.0+aa1dc1f
dhcp19-17-115.clus2.t5g.lab.eng.bos.redhat.com   Ready                         master,virtual            6h19m   v1.21.0-rc.0+aa1dc1f
dhcp19-17-116.clus2.t5g.lab.eng.bos.redhat.com   Ready                         master,virtual            6h20m   v1.21.0-rc.0+aa1dc1f
dhcp19-17-117.clus2.t5g.lab.eng.bos.redhat.com   Ready                         master,virtual            6h20m   v1.21.0-rc.0+aa1dc1f

After reboot:

[root@cnfdd5-installer cnf-internal-deploy]# ssh core.t5g.lab.eng.bos.redhat.com
Red Hat Enterprise Linux CoreOS 48.84.202104301525-0
  Part of OpenShift 4.8, RHCOS is a Kubernetes native operating system
  managed by the Machine Config Operator (`clusteroperator/machine-config`).

WARNING: Direct SSH access to machines is not recommended; instead,
make configuration changes via `machineconfig` objects:
  https://docs.openshift.com/container-platform/4.8/architecture/architecture-rhcos.html

---
Last login: Mon May  3 07:38:08 2021 from 10.19.17.175
[systemd]
Failed Units: 2
  NetworkManager-wait-online.service
  node-valid-hostname.service
[core@localhost ~]$ hostname
localhost

After another reboot:

[root@cnfdd5-installer cnf-internal-deploy]# ssh core.t5g.lab.eng.bos.redhat.com
Red Hat Enterprise Linux CoreOS 48.84.202104301525-0
  Part of OpenShift 4.8, RHCOS is a Kubernetes native operating system
  managed by the Machine Config Operator (`clusteroperator/machine-config`).

WARNING: Direct SSH access to machines is not recommended; instead,
make configuration changes via `machineconfig` objects:
  https://docs.openshift.com/container-platform/4.8/architecture/architecture-rhcos.html

---
Last login: Mon May  3 10:15:59 2021 from 10.19.17.175
[systemd]
Failed Units: 2
  NetworkManager-wait-online.service
  stalld.service
[core@cnfdd5 ~]$ hostname
cnfdd5.clus2.t5g.lab.eng.bos.redhat.com


What did you expect to happen?
The node should appear with its proper fqdn after a reboot.

Anything else we need to know?
Might be related to https://bugzilla.redhat.com/show_bug.cgi?id=1929160