Add Karpenter nodeSelector

 1apiVersion: kyverno.io/v1
 2kind: ClusterPolicy
 3metadata:
 4  name: add-karpenter-nodeselector
 5  annotations:
 6    policies.kyverno.io/title: Add Karpenter nodeSelector
 7    policies.kyverno.io/category: Karpenter, EKS Best Practices
 8    policies.kyverno.io/severity: medium
 9    policies.kyverno.io/subject: Pod
10    kyverno.io/kyverno-version: 1.7.1
11    policies.kyverno.io/minversion: 1.6.0
12    kyverno.io/kubernetes-version: "1.23"
13    policies.kyverno.io/description: >- 
14      Selecting the correct Node(s) provisioned by Karpenter is a way to specify
15      the appropriate resource landing zone for a workload. This policy injects a
16      nodeSelector map into the Pod based on the Namespace type where it is deployed.
17spec:
18  rules:
19  - name: add-medium
20    match:
21      any:
22      - resources:
23          kinds:
24          - Pod
25          namespaceSelector:
26            matchLabels:
27              type: medium 
28    mutate:
29      patchStrategicMerge:
30        spec:
31          nodeSelector:
32            kubernetes.io/arch: amd64
33            karpenter.sh/capacity-type: spot
34  - name: add-large
35    match:
36      any:
37      - resources:
38          kinds:
39          - Pod
40          namespaceSelector:
41            matchLabels:
42              type: large
43    mutate:
44      patchStrategicMerge:
45        spec:
46          nodeSelector:
47            kubernetes.io/arch: amd64
48            karpenter.sh/capacity-type: on-demand