查看pod配置清单

参考: (https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.14/)
[root@k8s-master01 ~]# kubectl  explain pods.metadata.[.........]
[root@k8s-master01 ~]# 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

	[root@k8s-master01 ~]# 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
	[root@k8s-master01 ~]# 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
[root@k8s-master01 ~]# kubectl  apply -f nginx_pods.yaml			
[root@k8s-master01 ~]# 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
    [root@k8s-master01 ~]# 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