The priority injection policy was setting priorityClassName on pods but
Kubernetes had already defaulted priority=0 and preemptionPolicy=PreemptLowerPriority
on those pods, causing admission controller to reject the mismatch.
Switch from patchStrategicMerge to patchesJson6902 to explicitly remove
the priority and preemptionPolicy fields before setting priorityClassName.
Four layers of noisy-neighbor protection using existing tier system:
- PriorityClasses (tier-0-core through tier-4-aux)
- LimitRange defaults auto-generated per namespace tier
- ResourceQuotas auto-generated per namespace tier
- PriorityClassName injection on pods via Kyverno mutate
Custom quota overrides for monitoring and crowdsec namespaces
which exceed the default tier quotas.
