Agent Based Installer and Assisted Installer (ABI/AI) does not function on OKD 4.17

[GingerGeek]

This issue is created to track a known defect in the current release (4.17.0-okd-scos.0).

There is currently an issue with UPI ABI/AI that means that method of cluster installation is non functional in 4.17

The OS image embedded in the release payload (FCOS) is not compatible and causes installation failure

The issue has been well explored/debugged by user @titou10titou10 and these issues contain more information:
#2015 #2018 #2035

ABI/AI currently uses Fedora as it's "bootstrap" OS installer image

It seems there are two issues:

• Under ABI/AI the pivot into SCOS fails (although not mentioned it seems to be same failure state as the ext4 issues so I suspect due to that)
• There seems to be some misconfiguration of the postgres service and for assisted installer it cannot start properly. Not sure of root cause here.

A suggested workaround (okd-project/okd-web#47) is to use RHCOS as the temporary ("bootstrap"), but my personal current understanding is that this would not comply with RedHat licenses, so we cannot support this as a project.

[titou10titou10]

* Under ABI/AI the pivot into SCOS fails (although not mentioned it seems to be same failure state as the ext4 issues so I suspect due to that)

The problem is very different. The FCOS bootstrap image can not pivot to the next image because

    bootstrap-pivot.sh[25771]: error: Remounting /sysroot read-write: Permission denied