We recently had a host running perfectly fine in a Virtualization Manager cluster. For some reason, we had to remove the host from the cluster and add it back again. But then things went wrong, we suddenly have a non-supported CPU type. Which is strange, because the server was running fine before in that cluster. Tried installing the software again, even reinstalled the OS on the host, but still no go. We updated the BIOS firmware of the server to the latest version which did not solve our issue.
Why are we suddenly confronted with an unsupported CPU type while it ran perfectly before in the same cluster and what steps can we take to troubleshoot and fix this issue?
The software we are using:
OS Version: RHEL - 8.8 - 1.0.6.el8
OS Description: Oracle Linux Server 8.8
Kernel Version: 5.15.0 - 303.171.5.2.1.el8uek.x86_64
KVM Version: 6.2.0 - 53.module+el8.10.0+90428+8e7927cd.2
LIBVIRT Version: libvirt-8.0.0-23.2.0.1.module+el8.10.0+90363+955e9a81
VDSM Version: vdsm-4.40.100.2-1.0.14.el8
The CPU in the physical host: Intel(R) Xeon(R) Gold 6146 CPU @ 3.20GHz
Cluster CPU Type: Secure Intel Skylake Server Family
Cluster CPU Type configuration is:
Skylake-Server-noTSX-IBRS, +ssbd, +md-clear, -mpx