Feature Overview

As a user deploying OpenShift on bare metal I want the installer to use the NTP servers that I specify at install time.

Problem

When the Ironic pre-provisioning image containing IPA is running, there is no way to sync the clocks to a custom NTP server. This causes issues with certificates - IPA generates a certificate for itself to be valid starting 1 hour in the past (see OCPBUGSM-21571), so if the hardware clock is more than 1 hour ahead of the real time then the certificate will be rejected by Ironic.

A new field is required in install-config.yaml where the user can specify additional NTP servers that can then be used to set up a chrony config in the IPA ISO. (Potentially this could also be used to automatically generate the MachineConfig manifests to add the same config to the cluster.)

See initial discussion here: OCPBUGS-22957