Add Istio Ambient Mode

 1apiVersion: kyverno.io/v1
 2kind: ClusterPolicy
 3metadata:
 4  name: add-ambient-mode-namespace
 5  annotations:
 6    policies.kyverno.io/title: Add Istio Ambient Mode
 7    policies.kyverno.io/category: Istio
 8    policies.kyverno.io/severity: medium
 9    kyverno.io/kyverno-version: 1.8.0
10    policies.kyverno.io/minversion: 1.6.0
11    kyverno.io/kubernetes-version: "1.24"
12    policies.kyverno.io/subject: Namespace
13    policies.kyverno.io/description: >-
14      In order for Istio to include namespaces in ambient mode, the label `istio.io/dataplane-mode` 
15      must be set to `ambient`. As an alternative to rejecting Namespace definitions which don't already 
16      contain this label, it can be added automatically. This policy adds the label `istio.io/dataplane-mode`
17      set to `ambient` for all new Namespaces.
18spec:
19  rules:
20  - name: add-ambient-mode-enabled
21    match:
22      any:
23      - resources:
24          kinds:
25          - Namespace
26    mutate:
27      patchStrategicMerge:
28        metadata:
29          labels:
30            istio.io/dataplane-mode: ambient