Kyverno Slow Response

Symptom: Kyverno’s operation seems slow in either mutating resources or validating them, causing additional time to create resources in the Kubernetes cluster.

Solution: Check the Kyverno logs for messages about throttling. If many are found, this indicates Kyverno is making too many API calls in too rapid a succession which the Kubernetes API server will throttle. Increase the values, or set the flags, --clientRateLimitQPS and --clientRateLimitBurst. While these flags have very sensible values after much field trials, in some cases they may need to be increased.