Errors encountered with SSH during the execution of a minor update from Red Hat OpenStack Platform (RHOSP) 17.0 to RHOSP 17.1.

Issue

• The minor update encounters issues with SSH, specifically failing with errors while updating all Controller nodes to the latest RHOSP 17.1 version.
• Observing the following warning:

Unhandled error in Python interpreter discovery for host overcloud-controller-0: Failed to connect to the host via ssh: load pubkey
"/home/stack/.ssh/id_rsa_tripleo": Invalid key length  Warning: Permanently
added '192.168.aa.bb' (ED25519) to the list of known hosts.  heat-
admin@192.168.aa.bb: Permission denied (publickey,password).

• Subsequently, encountering the following error:

52540031-8e1b-8e82-7f76-000000000360 | UNREACHABLE | Gathering Facts | overcloud-controller-

• In the process of a minor update from RHOSP 17.0 to RHOSP 17.1, the documentation advises ensuring the required bit size of 2048 bits. This criterion becomes mandatory when transitioning to Red Hat Enterprise Linux (RHEL) 9.1.