New node fails to onboard with error "The cpu_models option is not required when cpu_mode!=custom"

Problem

• New node fails to onboard with error in ostackhost logs:

2023-09-14 22:56:04.130 TRACE oslo_service.service nova.exception.Invalid: The cpu_models option is not required when cpu_mode!=custom

Environment

• Platform9 Managed OpenStack - v5.8.0 and Higher
• Rocky linux 9

Cause

• The issue occurred because cpu_model mentioned in nova_override.conf:

xxxxxxxxxx

# grep cpu_ /opt/pf9/etc/nova/conf.d/nova_override.conf

cpu_mode = host-passthrough

cpu_model = Broadwell-IBRS

Resolution

• Remove cpu_model from /opt/pf9/etc/nova/conf.d/nova_override.conf on the affected host and restart below service:

xxxxxxxxxx

# systemctl restart pf9-ostackhost

• Now, verify if the node gets onboarded.