kubernetes config文件生成

本文基于kubernetes1.28版本，分配研发使用只读kubeconfig账号，用kubectl查看pod信息等。

创建kubeconfig 文件。

前置条件

#创建sa
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: cluster-readonly-sa
  namespace: default
---

#创建sa的 secret
apiVersion: v1
kind: Secret
metadata:
  name: cluster-readonly-sa-token
  namespace: default
  annotations:
    kubernetes.io/service-account.name: "cluster-readonly-sa"
type: kubernetes.io/service-account-token
---


# 创建 clusterrole
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: cluster-readonly
rules:
- apiGroups:
  - '*'
  resources:
  - '*'
  verbs:
  - get
  - list
  - watch
  - exec
- nonResourceURLs:
  - '*'
  verbs:
  - GET

- apiGroups:
  - ""
  resources:
  - pods/exec
  verbs:
  - create
---

# 创建 clusterrolebinding
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: cluster-readonly-rb
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-readonly
subjects:
- kind: ServiceAccount
  name: cluster-readonly-sa
  namespace: default

获取token：

# 获取sa 的 token
# kubectl get secret cluster-readonly-sa-token  -o=jsonpath='{.data.token}'| base64 --decode

基于上述信息， 替换标红处字段,生成 kubeconfig 。