二进制安装kubernetes1.14.1-pod配置清单之客户端访问方式03

Posted 2021-12-02

查看pod配置清单

参考： (https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.14/)
[[email protected] ~]# kubectl  explain pods.metadata.[.........]
[[email protected] ~]# kubectl  explain pods.spec.[........]

开放端口+ip地址访问：此处的一旦绑定，只能指定的ip或者端口访问

    [[email protected] ~]# kubectl  explain pods.spec.containers.ports
      containerPort : 容器开放端口
        hostIP： 绑定宿主机ip
        hostPort：绑定宿主机端口
        name： 必须是IANA_SVC_NAME,并且是pod唯一
        protocol ：协议端口 必须是UDP TCP SCTP类型，默认TCP
        语法：
     spec:
     containers:
     - image: nginx
       imagePullPolicy: IfNotPresent
       name: nginx-1
       ports:
               -  protocol: TCP
                  conainerPort: 80
                  name: http
                    hostPort: 8888
    [[email protected] ~]# cat nginx_pods.yaml 
     apiVersion: v1
     kind: Pod
     metadata:
       name: pod-demo1
       namespace:  prod
     spec:
       containers:
       - image: nginx
         imagePullPolicy: IfNotPresent
         name: nginx-1
         ports:
         - protocol: TCP
           containerPort: 80
           hostPort: 8888
           name: http-nginx
[[email protected] ~]# kubectl  apply -f nginx_pods.yaml            
[[email protected] ~]# kubectl  get pods/pod-demo1 -n prod -o wide

切换到29服务器查看

访问测试

绑定宿主机hostIP

 ports：
   - protocol: TCP
 containerPort: 80
 hostPort: 8888
 name: http-nginx
 hostIP: 192.168.1.101

外部客户端访问 内部ip地址的方式

service->Nodeport

    [[email protected] ~]# kubectl  create service clusterip nginx-dep --tcp=80:80
         根据开放节点数量，直接访问（所有node节点都可以访问）

hostPort 上述实例 只能指定节点的ip+端口可以访问

hostNetwork 只能访问指定宿主机ip+端口访问

    spec:
      containers:
      - image: nginx
        imagePullPolicy: IfNotPresent
        name: nginx-1
      hostNetwork: true