如何在 Google Kubernetes Engine for KubeIP 中部署 ClusterRoleBinding答案

【问题标题】：How to deploy ClusterRoleBinding in Google Kubernetes Engine for KubeIP如何在 Google Kubernetes Engine for KubeIP 中部署 ClusterRoleBinding
【发布时间】：2019-08-19 13:32:39
【问题描述】：

我在尝试将 KubeIP 部署到 GKE 时看到 RBAC 失败。

我已将问题归结为KubeIP infrastructure 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kubectl 和 GKE 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] [] [节点] [] []} {[list] [] [nodes] [] []} {[watch] [] [nodes] [] []} {[patch] [] [nodes] [] []} { [get] [] [pods] [] []} {[list] [] [pods] [] []} {[watch] [] [pods] [] []}] user=&{108986779198363313539 [系统：身份验证]图[user-assertion.cloud.google.com：[AKUJVpldMDXqrDZ2slnJReDbLytxt6P2EEyEBbLNRB90oOATH4vIURo / lIhaBuAj9nnwwyxJDSxj2OdCyjjgBC / s5QxftIJnr8128ToTglCzk + e8Wybt4heIizRHugWnIhKNqkF + B0yiv0pIxgOfakma + SbkzbQbVzJPtgxsmHmak30YfPA58n / xyJ8R7oNVJ5dFUAWDFNsqHf / auolViw0Zd7Cr4aYYDXX4GScw ==]]} ownerrules = [{[创建] [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=[]

我已经通过发出

来创建适当的 ~/.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 集群中被授予 cluster-admin

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 的哪个元素吗？

【问题讨论】：

标签： kubernetes google-kubernetes-engine kubectl rbac

【解决方案1】：

这个问题“Creating a ClusterRole as the default compute service account fails with extra privileges error”的答案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，则一切正常。

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

【讨论】：