apiVersion: v1

kind: ReplicationController

metadata:

    name: nginx-controller

spec:

     replicas:2selector:

     name: nginx

template:

    metadata:

       labels:

        name: nginx

spec:

     containers:-name: nginx

      image: nginx

      ports:- containerPort:80

2、创建nginx-service-nodeport.yaml

apiVersion: v1

kind: Service

metadata:

     name: nginx-service-nodeport

spec:

     ports:

          - port:8000

              targetPort:31152

                protocol: TCP

               type: NodePort

selector:

     name: nginx

3、创建pod

kubectl create -f nginx-rc.yaml

4、创建service

kubectl create -f nginx-service-nodeport.yaml

5、查看pod

[root@k8s-master ~]# kubectl get pods

NAME                    READY    STATUS    RESTARTS  AGE

nginx-controller-v40nj1/1Running11h

nginx-controller-zxdzh1/1Running11h

[root@k8s-master ~]# kubectl describe pod nginx-controller-v40nj

Name:        nginx-controller-v40nj

Namespace:    default

Node:        k8s-slave1-206/60.19.29.21Start Time:    Thu,11Aug201619:02:20-0700Labels:        name=nginx

Status:        Running

IP:10.0.83.3Controllers:    ReplicationController/nginx-controller

Containers:

nginx:

Container ID:        docker://269adc9b693aba0356ba18e4253c2b498fc7b7a8ce0af83857fcfd6b70e6ef03Image:            nginx

Image ID:            docker://sha256:0d409d33b27e47423b049f7f863faa08655a8c901749c2b25b93ca67d01a470dPort:80/TCP

State:            Running

Started:            Thu,11Aug201620:49:27-0700Last State:            Terminated

Reason:            Completed

Exit Code:0Started:            Thu,11Aug201619:03:44-0700Finished:            Thu,11Aug201620:12:12-0700Ready:            True

Restart Count:1Environment Variables:Conditions:

Type        Status

Initialized    True

Ready    True

PodScheduled    True

No volumes.

QoS Tier:    BestEffort

Events:

FirstSeen    LastSeen    Count    From                SubobjectPath        Type        Reason    Message---------    --------    -----    ----                -------------        --------    ------    -------5m        5m1{kubelet k8s-slave1-206}    spec.containers{nginx}    Normal        Pulling    pulling image"nginx"5m        5m2{kubelet k8s-slave1-206}                Warning        MissingClusterDNS    kubelet does not have ClusterDNS IP configured and cannot create Pod using"ClusterFirst"policy. Falling back to DNSDefault policy.

5m        5m1{kubelet k8s-slave1-206}    spec.containers{nginx}    Normal        Pulled    Successfully pulled image"nginx"5m        5m1{kubelet k8s-slave1-206}    spec.containers{nginx}    Normal        Created    Created container with dockerid269adc9b693a

5m        5m1{kubelet k8s-slave1-206}    spec.containers{nginx}    Normal        Started    Started container with dockerid269adc9b693a

6、查看service

[root@k8s-master ~]# kubectl get service

NAME                    CLUSTER-IP    EXTERNAL-IP  PORT(S)    AGE

kubernetes10.254.0.1443/TCP    16h

nginx-service-nodeport10.254.29.728000/TCP  49m

[root@k8s-master ~]# kubectl describe service nginx-service-nodeport

Name:            nginx-service-nodeport

Namespace:        default

Labels:Selector:        name=nginx

Type:            NodePort

IP:10.254.29.72Port:8000/TCP

NodePort:31152/TCP

Endpoints:10.0.83.2:80,10.0.83.3:80Session Affinity:    None

No events.

7、测试service是否好用

因为service使用的是NodePort方式，所以在任何一个节点访问31152这个端口都可以访问nginx

$ curl10.10.20.203:31152Welcome to nginx!body {

width: 35em;

margin:0auto;

font-family: Tahoma, Verdana, Arial, sans-serif;

}

Welcome to nginx!

If you see this page, the nginx web server is successfully installed and

working. Further configuration is required.

For online documentation and support please refer tonginx.org.
Commercial support is available atnginx.com.

Thank youforusing nginx.

$ curl10.10.20.206:31152Welcome to nginx!body {

width: 35em;

margin:0auto;

font-family: Tahoma, Verdana, Arial, sans-serif;

}

Welcome to nginx!

If you see this page, the nginx web server is successfully installed and

working. Further configuration is required.

For online documentation and support please refer tonginx.org.
Commercial support is available atnginx.com.

Thank youforusing nginx.