kubernetes - 使用RBAC授予对Kubernetes中单个Pod的访问权限

Question

我只想使用kubectl远程访问一个pod，所以遵循here的说明。
为了做到这一点，我在kubernetes中创建了一个access.yml文件:

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: devops-user
  namespace: default

---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: devops-user-limited-access
  namespace: default
rules:
- apiGroups: ["", "extensions", "apps"]
  resources: ["*"]
  verbs: ["*"]

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

在远程笔记本电脑中，我使用 ~/.kube/config创建了一个文件，如下所示:

apiVersion: v1
kind: Config
preferences: {}

# Define the cluster
clusters:
- cluster:
    certificate-authority-data: <my-ca.crt>
    # You'll need the API endpoint of your Cluster here:
    server: https://<server-ip>:6443
  name: kubernetes

# Define the user
users:
- name: devops-user
  user:
    as-user-extra: {}
    client-key-data: <my-ca.crt>
    token: <token-created-by-k8s>

# Define the context: linking a user to a cluster
contexts:
- context:
    cluster: kubernetes
    namespace: default
    user: devops-user
  name: default

# Define current context
current-context: default

现在，我可以“完全访问”“所有 pod ”，但这不是我想要的。我只想拥有:

I want "full access" to only "one pod".

Answer 1

只需将其添加到您的角色文件中

resourceNames: ["POD_NAME"]

因此您的角色yaml文件应如下所示

kind: Role
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: devops-user-limited-access
  namespace: default
rules:
- apiGroups: ["", "extensions", "apps"]
  resources: ["pods", "pods/log"]
  resourceNames: ["POD_NAME"] <-------------------------------here
  verbs: ["get", "list"]