The current documentation for configuring the cloud-provider-config and infrastructures.config.openshift.io resources in vSphere-based OpenShift assisted-installer clusters does not differentiate between OpenShift versions. Starting from:

• OpenShift 4.18, the cloud provider uses an out-of-tree CPI, which requires a different YAML-based configuration format instead of the older INI-style format.

• OpenShift 4.16, the structure of the infrastructures.config.openshift.io resource was expanded to include new fields such as apiServerInternalIPs, machineNetworks, template, and loadBalancer.

Expected Result:
Documentation should include version-aware instructions:

• For OCP >= 4.18, use YAML format for cloud-provider-config

• For OCP <= 4.17, retain INI format

• For OCP >= 4.16, include additional fields in infrastructures.config.openshift.io such as apiServerInternalIPs, machineNetworks, and template

• For OCP <= 4.15, retain legacy format without those fields

The solution is described here https://access.redhat.com/solutions/6677901 (currently on draft).

Documentation URL:  https://docs.redhat.com/en/documentation/assisted_installer_for_openshift_container_platform/2023/html/assisted_installer_for_openshift_container_platform/installing-on-vsphere#vsphere-post-installation-configuration_installing-on-vsphere

Summary of work:

• Edit the KB article for Elior in a Google Docs file
• Update the Assisted Installer document accordingly