如何在Google Kubernetes Engine中為KubeIP部署ClusterRoleBinding

Question

我在嘗試將KubeIP部署到GKE時看到RBAC失敗。

我已將問題分離到KubeIP基礎結構的以下部分：

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: kubeip-sa
  namespace: kube-system
rules:
- apiGroups: [""]
  resources: ["nodes"]
  verbs: ["get","list","watch","patch"]
- apiGroups: [""]
  resources: ["pods"]
  verbs: ["get","list","watch"]

我從kubectl和GKE收到以下錯誤：

服務器出錯（禁止）：創建“template.yml”時出錯：clusterroles.rbac.authorization.k8s.io“kubeip-sa”被禁止：嘗試授予額外權限：[{[get] [] [nodes] [ ] []} {[list] [] [nodes] [] []} {[watch] [] [nodes] [] []} {[patch] [] [nodes] [] []} {[get] [] [pods] [] []} {[list] [] [pods] [] []} {[watch] [] [pods] [] []}] user =＆{108986779198363313539 [system：authenticated] map [user-assertion.cloud.google.com:[AKUJVpldMDXqrDZ2slnJReDbLytxt6P2EEyEBbLNRB90oOATH4vIURo/lIhaBuAj9nnwwyxJDSxj2OdCyjjgBC/s5QxftIJnr8128ToTglCzk+e8Wybt4heIizRHugWnIhKNqkF+B0yiv0pIxgOfakma+SbkzbQbVzJPtgxsmHmak30YfPA58n/xyJ8R7oNVJ5dFUAWDFNsqHf/auolViw0Zd7Cr4aYYDXX4GScw==]]} ownerrules = [{[創建] [authorization.k8s.io] [selfsubjectaccessreviews selfsubjectrulesreviews] [] []} {[get] [] [] [] [/ api / api / * / apis / apis / * / healthz / openapi / openapi / * /swagger-2.0.0.pb-v1 /swagger.json / swaggerapi / swaggerapi / * / version / version /]}] ruleResolutionErrors = []

我通過發布創建了適當的〜/ .kube / config

gcloud container clusters get-credentials <cluster> \
  --zone <zone> \
  --project <project>

我正在使用的gcloud服務帳戶已在相關的GKE集群中被授予cluster-admin

kubectl create clusterrolebinding cluster-admin-binding \
  --clusterrole cluster-admin \
  --user $(gcloud config get-value account)

我可以驗證我的服務帳戶用戶是否應該使用cluster-admin角色檢查我當前的gcloud用戶並檢查GKE ClusterRoleBinding

$ gcloud config get-value account
terraform@<project>.iam.gserviceaccount.com

$ kubectl describe clusterrolebinding cluster-admin-binding
Name:         cluster-admin-binding
Labels:       <none>
Annotations:  <none>
Role:
  Kind:  ClusterRole
  Name:  cluster-admin
Subjects:
  Kind  Name                                                Namespace
  ----  ----                                                ---------
  User  terraform@<project>.iam.gserviceaccount.com  

根據kubectl我應該能夠創建ClusterRoleBindings

$ kubectl auth can-i create clusterrolebinding
yes

有人看到我錯過了GKE RBAC的哪些元素？

Answer 1

這個問題的答案“ 創建一個ClusterRole作為默認的計算服務帳戶失敗並帶有額外的權限錯誤 ”引導我找到解決方案。

如果將ClusterRoleBinding映射到服務帳戶ID而不是電子郵件，則一切都按預期工作。

kubectl create clusterrolebinding cluster-admin-binding \
  --clusterrole cluster-admin \
  --user $(gcloud iam service-accounts describe <service account email> --format="value(uniqueId)")