Require Ingress HTTPS in CEL expressions

 1apiVersion: kyverno.io/v1
 2kind: ClusterPolicy
 3metadata:
 4  name: require-ingress-https
 5  annotations:
 6    policies.kyverno.io/title: Require Ingress HTTPS in CEL expressions
 7    policies.kyverno.io/category: Other in CEL 
 8    policies.kyverno.io/severity: medium
 9    kyverno.io/kyverno-version: 1.11.0
10    kyverno.io/kubernetes-version: "1.26-1.27"
11    policies.kyverno.io/subject: Ingress
12    policies.kyverno.io/description: >-
13      Ingress resources should only allow secure traffic by disabling
14      HTTP and therefore only allowing HTTPS. This policy requires that all
15      Ingress resources set the annotation `kubernetes.io/ingress.allow-http` to
16      `"false"` and specify TLS in the spec.
17spec:
18  background: true
19  validationFailureAction: Audit
20  rules:
21  - name: has-annotation
22    match:
23      any:
24      - resources:
25          kinds:
26          - Ingress
27          operations:
28          - CREATE
29          - UPDATE
30    validate:
31      cel:
32        expressions:
33          - expression: >-
34              object.metadata.?annotations[?'kubernetes.io/ingress.allow-http'].orValue('default') == 'false'
35            message: "The kubernetes.io/ingress.allow-http annotation must be set to false."
36  - name: has-tls
37    match:
38      any:
39      - resources:
40          kinds:
41          - Ingress
42          operations:
43          - CREATE
44          - UPDATE
45    validate:
46      cel:
47        expressions:
48          - expression: "has(object.spec.tls)"
49            message: "TLS must be defined."