I'd disabled the CPU ALLOC RATIO on an existing RDO multi-node environment in the answer file to 1:

CONFIG_NOVA_SCHED_CPU_ALLOC_RATIO=1.0

And would like to change the value to a higher value, e.g. 8:

CONFIG_NOVA_SCHED_CPU_ALLOC_RATIO=8.0

Can I change this setting directly in the DB or in some config files? Or shall I run packstack against the changed answer file again?

Thanks for your help in advance!

Arash