configmap做nginx影射实验

• 影射的nginx配置文件：
  加好了状态码显示/stub_status路由
  vi nginx-test.conf

server {
    listen       80;
    server_name  localhost;

    #charset koi8-r;
    #access_log  /var/log/nginx/host.access.log  main;

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

    location /stub_status {
        allow 127.0.0.1;
        stub_status on;
    }
}

• 编写yaml文件
  vi nginx-deployment.yaml

apiVersion: v1
kind: Pod
metadata:
  name: test-configmap-nginx
spec:
  containers:
  - name: nginx  # 容器的名字
    image: nginx:alpine  # 镜像的名字
    ports:
    - containerPort: 80
    volumeMounts:
    - name: nginxcfmap
      mountPath: "/etc/nginx/conf.d" # 挂载到容器中目录，这个目录>会自动>创建
    livenessProbe:
      httpGet:
        path: /
        port: 80
        httpHeaders:
        - name: X-Custom-Header
          value: Awesome
      initialDelaySeconds: 3
      periodSeconds: 3
  volumes:
  - name: nginxcfmap
    configMap:
       name: nginxcfmap  # 创建 configmap 对象的名称
       items:
       - key: nginx-test.conf  # 创建  configmap 对象时指定的 key
         path: nginx-test.conf  # 容器 a 目录中的文件名

• 创建configmap
  注意configmap对象名称nginxcfmap和yaml文件中保持一致
  kubectl create configmap nginxcfmap --from-file=nginx-test.conf=./nginx-test.conf
  

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• 启动容器
  kubectl create -f nginx-deployment.yaml
kubectl get pods查看是否启动成功
  

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• 查看部署nginx容器的ip
  kubectl describe pod test-liveness-exec
  

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• 访问默认跟路由
  curl 192.168.122.51/会出现nginx默认首页的代码
  

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• 访问配置的状态码路由
  curl 10.100.5.210/stub_status/
  

  image.png