GKE Kubernetes RBAC 将默认角色绑定到我的有限自定义

Question

我正在使用 G 我想创建一个只能访问特定命名空间的自定义用户，我使用了这个 yaml:

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: develop-user
  namespace: develop

---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: develop-user-full-access
  namespace: develop
rules:
- apiGroups: rbac.authorization.k8s.io
  resources:
  - services
  verbs: ["get"]

---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: develop-user-view
  namespace: develop
subjects:
- kind: ServiceAccount
  name: develop-user
  namespace: develop
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: develop-user-full-access

因此，在我将上下文切换到这个新服务帐户并发现我仍然可以访问所有内容之后，我获得了一个证书并添加到我的 kube 配置中:(
为什么会发生以及如何解决？

我的 kubeconfig（粘贴复制：https://pastebin.com/s5Nd6Dnn）：

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: %certificate-data%
    server: https://animeheaven.nyah
  name: anime-cluster-develop
contexts:
- context:
    cluster: anime-cluster-develop
    namespace: develop
    user: develop-user
  name: anime-develop
current-context: anime-develop
kind: Config
preferences: {}
users:
- name: develop-user
  user:
    client-key-data: %certdata%
    token: %tokenkey%

Answer 1

这里有一篇关于如何设置它的好文章：https://jeremievallee.com/2018/05/28/kubernetes-rbac-namespace-user.html。

总的来说，你的配置没问题，我把- apiGroups: rbac.authorization.k8s.io这一行改成了：

- apiGroups: ["", "extensions", "apps"]

然后，应用以下步骤：

创建develop 命名空间

$ kubectl create namespace develop

根据您的配置创建 RBAC。

$ kubectl apply -f rbac.yaml

读取集群 IP、令牌和 CA 证书。

$ kubectl cluster-info
$ kubectl get secret develop-user-token-2wsnb -o jsonpath={.data.token} -n develop | base64 --decode
$ kubectl get secret develop-user-token-2wsnb -o "jsonpath={.data['ca\.crt']}" -n develop

填写 ~/.kube/config 文件（如 linked guide 中所述）
将上下文更改为 develop
用户只能访问 develop 命名空间中的检查服务。

$ kubectl get service my-service -n mynamespace
Error from server (Forbidden): services "my-service" is forbidden: User "system:serviceaccount:develop:develop-user" cannot get services in the namespace "mynamespace"
$ kubectl get service my-service -n develop
hError from server (NotFound): services "my-service" not found

Answer 2

https://medium.com/uptime-99/making-sense-of-kubernetes-rbac-and-iam-roles-on-gke-914131b01922
https://medium.com/@ManagedKube/kubernetes-rbac-port-forward-4c7eb3951e28

这两篇文章终于帮到我了！由于这些愚蠢的事情，我几乎感到沮丧，感谢 uptime-99 和 ManagedKube 我做到了！耶！

关键是在gcloud中创建kubernetes-viewer用户，然后为他创建角色这里有一个提示！

---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  namespace: develop
  name: allow-developer-port-forward
rules:
- apiGroups: [""]
  resources: ["pods", "pods/portforward"]
  verbs: ["get", "list", "create"]
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: anime-developer-port-access
  namespace: develop
subjects:
- kind: User
  name: ANIMEDEVERLOP@gmail.com
  apiGroup: rbac.authorization.k8s.io
roleRef:
  kind: Role
  name: allow-developer-port-forward
  apiGroup: ""

然后

kubectly apply -f accessconfig.yaml

就是这样！
祝你有美好的一天！

GKE Kubernetes RBAC 将默认角色绑定到我的有限自定义

GKE Kubernetes RBAC bind default role to my limited custom

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kubernetes

google-kubernetes-engine