时间戳

首页 > 解决方案 > 如何在 Google Kubernetes Engine for KubeIP 中部署 ClusterRoleBinding

kubernetes - 如何在 Google Kubernetes Engine for KubeIP 中部署 ClusterRoleBinding

问题描述

尝试将KubeIP部署到 GKE时，我看到 RBAC 失败。

我已将问题隔离到KubeIP 基础设施的以下部分：

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"]

我从kubectlGKE 收到以下错误：

来自服务器的错误（禁止）：创建“template.yml”时出错：clusterroles.rbac.authorization.k8s.io “kubeip-sa”被禁止：尝试授予额外权限：[{[get] [] [nodes] [ ] []} {[list] [] [nodes] [] []} {[watch] [] [nodes] [] []} {[patch] [] [nodes] [] []} {[get] [] [pods] [] []} {[list] [] [pods] [] []} {[watch] [] [pods] [] []}] user=&{108986779198363313539 [system:authenticated] 地图[user-assertion.cloud.google.com:[AKUJVpldMDXqrDZ2slnJReDbLytxt6P2EEyEBbLNRB90oOATH4vIURo/lIhaBuAj9nnwwyxJDSxj2OdCyjjgBC/s5QxftIJnr8128ToTglCzk+e8Wybt4heIizRHugWnIhKNqkF+B0yiv0pIxgOfakma+SbkzbQbVzJPtgxsmHmak30YfPA58n/xyJ8R7oNVJ5dFUAWDFNsqHf/auolViw0Zd7Cr4aYYDXX4GScw==]]} ownerrules=[{[create] [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=[]

我已经通过发出装箱了适当的 ~/.kube/config

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

我正在使用的 gcloud 服务帐户已在相关 GKE 集群中获得集群管理员权限

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

我可以验证我的服务帐户用户是否应该具有 cluster-admin 角色，检查我当前的 gcloud 用户并检查 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

根据 kubectl 我应该能够创建 ClusterRoleBindings

$ kubectl auth can-i create clusterrolebinding
yes

有人看到我缺少 GKE RBAC 的哪些元素吗？

标签： kubernetesgoogle-kubernetes-enginekubectlrbac

解决方案

这个问题的答案“将 ClusterRole 创建为默认计算服务帐户失败并出现额外权限错误”引导我找到了解决方案。

如果您将 ClusterRoleBinding 映射到服务帐户 ID 而不是电子邮件，那么一切都会按预期工作。

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

推荐阅读