前言
使用kubectl工具管理kubernetes集群
其它参考官方地址：https://kubernetes.io/zh-cn/docs/reference/kubectl/
安装
用 Homebrew 在 macOS 系统上安装（注意版本）
## 安装 默认最新版本
brew install kubectl
## 验证
kubectl version --client
其它参考官方地址：https://kubernetes.io/zh-cn/docs/tasks/tools/#kubectl
配置
将本地的kubectl与远程的kubernetes集群关联起来
- 获取集群的kubeConfig文件
- 维护至本地的
~/.kube/config文件中，多个环境选择手工合并
apiVersion: v1
kind: Config
clusters: #集群地址
- name: "dev"
cluster:
server: "https://k8s-rancher.kdev/k8s/clusters/local"
- name: "test"
cluster:
server: "https://k8s-rancher.ktest/k8s/clusters/local"
- name: "uat"
cluster:
server: "https://k8s-rancher.kstaging/k8s/clusters/local"
users: #对应的用户组信息
- name: "dev"
user:
token: "kubeconfig-u-q8vvc2v6j" #登录方式选择token 或者账号密码
# password: some-password
# username: exp
- name: "test"
user:
token: "kubeconfig-u-nqx6z5mdp"
- name: "uat"
user:
token: "kubeconfig-u-4rvkwp77d"
contexts: #上下文配置
- name: "test"
context:
user: "test"
cluster: "test"
- name: "dev"
context:
user: "dev"
cluster: "dev"
- name: "uat"
context:
user: "uat"
cluster: "uat"
# 指定当前操作的上下文配置
current-context: "test"
- 查看集群信息，*表示当前环境
kubectl config get-contexts
- 切换dev环境
kubectl config use-context dev
使用
查询
kubectl get pods -n erp-mt | grep purchase
kubectl get pods -n erp-web | grep purchase
kubectl get pods -n mt | grep purchase
kubectl get deployment -n erp-mt | grep purchase
kubectl get deployment -n mt | grep purchase
kubectl logs -f --tail 200 ms-purchase-7d467bdfcd-265sj -n mt
重启deployment
kubectl rollout restart deployment -n mt ms-purchase
指定参数更新deployment
kubectl patch deployment ms-purchase -n mt -p '{"spec": {"template": {"spec": {"containers": [{"name": "ms-purchase", "resources": {"limits": {"cpu": "2", "memory": "4Gi"}, "requests": {"cpu": "1", "memory": "2Gi"}}, "livenessProbe": {"initialDelaySeconds": 60}, "readinessProbe": {"initialDelaySeconds": 60}}]}}}}'
命令大全
https://kubernetes.io/zh-cn/docs/reference/kubectl/cheatsheet/