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这是尚未发布的文档。 Admission Controller 1.34-dev.

如何使用策略组

在使用策略组之前，请查阅解释。

使用策略组的解释中的示例，使用这些命令来实现它。

kubectl apply -f group-policy-demo.yaml
一个`ClusterAdmissionPolicyGroup`，拒绝使用带有`latest`标签镜像的Pod，除非这些镜像由两个受信任方签名：爱丽丝和鲍勃。 
apiVersion: policies.kubewarden.io/v1
kind: ClusterAdmissionPolicyGroup # or AdmissionPolicyGroup
metadata:
  name: demo
spec:
  rules:
    - apiGroups: [""]
      apiVersions: ["v1"]
      resources: ["pods"]
      operations:
        - CREATE
        - UPDATE
  policies:
    signed_by_alice:
      module: ghcr.io/kubewarden/policies/verify-image-signatures:v0.3.0
      settings:
        modifyImagesWithDigest: false
        signatures:
          - image: "*"
            pubKeys:
              - |
                -----BEGIN PUBLIC KEY-----
                MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEyg65hiNHt8FXTamzCn34IE3qMGcV
                yQz3gPlhoKq3yqa1GIofcgLjUZtcKlUSVAU2/S5gXqyDnsW6466Jx/ZVlg==
                -----END PUBLIC KEY-----
    signed_by_bob:
      module: ghcr.io/kubewarden/policies/verify-image-signatures:v0.3.0
      settings:
        modifyImagesWithDigest: false
        signatures:
          - image: "*"
            pubKeys:
              - |
                -----BEGIN PUBLIC KEY-----
                MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEswA3Ec4w1ErOpeLPfCdkrh8jvk3X
                urm8ZrXi4S3an70k8bf1OlGnI/aHCcGleewHbBk1iByySMwr8BabchXGSg==
                -----END PUBLIC KEY-----
    reject_latest:
      module: registry://ghcr.io/kubewarden/policies/trusted-repos:v0.2.0
      settings:
        tags:
          reject:
            - latest
  expression: "reject_latest() || (signed_by_alice() && signed_by_bob())"
  message: "the image is using the latest tag or is not signed by Alice and Bob"

一旦策略生效，将拒绝创建不合规的Pod。 要获取有关属于该组的策略评估的更多信息，请提高`kubectl`的详细程度：

kubectl -v4 apply -f signed-pod.yml
I0919 18:29:40.251332    4330 helpers.go:246] server response object: [{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {},
  "status": "Failure",
  "message": "error when creating \"signed-pod.yml\": admission webhook \"clusterwide-demo.kubewarden.admission\" denied the request: the image is using the latest tag or is not signed by Alice and Bob",
  "details": {
    "causes": [
      {
        "message": "Resource signed is not accepted: verification of image testing.registry.svc.lan/busybox:latest failed: Host error: Callback evaluation failure: Image verification failed: missing signatures\nThe following constraints were not satisfied:\nkind: pubKey\nowner: null\nkey: |\n  -----BEGIN PUBLIC KEY-----\n  MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEswA3Ec4w1ErOpeLPfCdkrh8jvk3X\n  urm8ZrXi4S3an70k8bf1OlGnI/aHCcGleewHbBk1iByySMwr8BabchXGSg==\n  -----END PUBLIC KEY-----\nannotations: null\n",
        "field": "spec.policies.signed_by_bob"
      },
      {
        "message": "not allowed, reported errors: tags not allowed: latest",
        "field": "spec.policies.reject_latest"
      }
    ]
  },
  "code": 400
}]
Error from server: error when creating "signed-pod.yml": admission webhook "clusterwide-demo.kubewarden.admission" denied the request: the image is using the latest tag or is not signed by Alice and Bob

属于该组的策略产生的评估输出仅在提高`kubectl`的详细程度时可见。

详细程度为`4`足以查看策略的评估输出。