Comment 0 for bug 1897275

I'm deploying OpenStack Ussuri on Bionic using the charm cs:nova-compute-kvm-320 with Juju 2.8.3 and MAAS 2.8.1.

In my bundle.yaml vcpu-pin-set option was not set for nova-compute-kvm charm. I had all-green Juju deployment when I attempted to set Nova's cpu_shared_set and cpu_dedicated_set using corresponding charm options cpu-shared-set and cpu-dedicated-set:

$ juju config nova-compute-kvm-critical -m openstack cpu-shared-set="8-23"
$ juju config nova-compute-kvm -m openstack cpu-dedicated-set="9-63"

config-changed hook would fail after the second command with a traceback like this: https://pastebin.ubuntu.com/p/pFRs6thHqC/

Nova's vcpu_pin_set option has been being deprecated since Train: [1]

[1] https://docs.openstack.org/releasenotes/nova/train.html#deprecation-notes