Mutate policy adding default labels

Auto-inject labels on admission via strategic merge patch; mutate runs before validate

kubectl apply -f - <<'EOF'
apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: add-team-label
spec:
  rules:
  - name: add-label
    match:
      any:
      - resources:
          kinds: [Pod]
    mutate:
      patchStrategicMerge:
        metadata:
          labels:
            team: "{{request.userInfo.username}}"
EOF

tool: kyverno5 commands
tags: kyverno security k8s gitops

More kyverno commands

List all cluster and namespaced policies

kubectl get cpol,pol -A -o custom-columns='NAME:.metadata.name,ACTION:.spec.validationFailureAction,READY:.status.ready'

Show every Kyverno policy with enforce/audit mode and ready state at a glance
Apply policy against a resource offline

kyverno apply policy.yaml --resource resource.yaml --policy-report

Dry-run a policy on a manifest without a cluster; emits a PolicyReport for CI gating
Run policy test suite

kyverno test ./tests --remove-color -d

Execute kyverno-test.yaml suites asserting resource pass/fail/skip; -d for detailed diff
Inspect policy reports for violations

kubectl get polr,cpolr -A -o json | jq -r '.items[].results[] | select(.result=="fail") | "\(.policy)/\(.rule)"' | sort | uniq -c

Aggregate failing PolicyReport results cluster-wide ranked by count

all 5 kyverno commands