kubernetes集群已经部署好了，需要的话可以参考之前的文章https://www.cnblogs.com/winter1519/p/10015420.html

[root@master tomcat]# kubectl get nodes

NAME      STATUS    AGE

node1     Ready     10d

node2     Ready     10d

部署nginx

需要三个配置文件：

[root@master nginx]# vim nginx-pod.yaml

apiVersion: v1

kind: Pod

metadata:

  name: nginx-pod

  labels:

    name: nginx-pod

spec:

  containers:

  - name: nginx

    image: nginx

    ports:

    - containerPort: 80

[root@master nginx]# vim nginx-rc.yaml

apiVersion: v1

kind: ReplicationController

metadata:

  name: nginx-rc

spec:

  replicas: 2

  selector:

    name: nginx-pod

  template:

    metadata:

      labels:

        name: nginx-pod

    spec:

       containers:

       - name: nginx-pod

         image: nginx

         ports:

         - containerPort: 80

[root@master nginx]# vim nginx-pod.yaml

apiVersion: v1

kind: Pod

metadata:

  name: nginx-pod

  labels:

    name: nginx-pod

spec:

  containers:

  - name: nginx

    image: nginx

    ports:

    - containerPort: 80

[root@master nginx]#kubectl create -f nginx-pod.yaml

[root@master nginx]#kubectl describe pod nginx

[root@master nginx]#kubectl create -f   nginx-rc.yaml

[root@master nginx]#kubectl create -f   nginx-service.yaml

[root@master nginx]# kubectl get pods -o wide

NAME                        READY     STATUS    RESTARTS   AGE       IP            NODE

nginx-pod                   1/1       Running   1          1d        10.255.95.2   node2

nginx-rc-351xd              1/1       Running   1          1d        10.255.1.3    node1

[root@master nginx]# kubectl get svc

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

kubernetes      10.254.0.1       <none>        443/TCP          10d

nginx-service   10.254.208.231   <nodes>       80:30011/TCP     1d

[root@master nginx]# kubectl get rc

NAME       DESIRED   CURRENT   READY     AGE

nginx-rc   2         2         2         1d

访问nginx：

http://192.168.91.26:30011

http://192.168.91.27:30011

部署tomcat

[root@master tomcat]# vim tomcat-deployment.yaml

apiVersion: extensions/v1beta1

kind: Deployment

metadata:

  name: my-tomcat

spec:

  replicas: 2

  template:

    metadata:

      labels:

        app: my-tomcat

    spec:

      containers:

      - name: my-tomcat

        image: docker.io/tomcat

        ports:

        - containerPort: 80

[root@master tomcat]# vim tomcat-service.yaml

apiVersion: v1

kind: Service

metadata:

  name: my-tomcat

spec:

  type: NodePort

  ports:

  - port: 8080

    targetPort: 8080

    nodePort: 31111

  selector:

    app: my-tomcat

[root@master tomcat]# kubectl create -f tomcat-deployment.yaml

[root@master tomcat]# kubectl create -f tomcat-service.yaml

[root@master tomcat]# kubectl get deployment

NAME        DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE

my-tomcat   2         2         2            2           59m

[root@master tomcat]# kubectl get svc

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

kubernetes      10.254.0.1       <none>        443/TCP          10d

my-tomcat       10.254.110.240   <nodes>       8080:31111/TCP   59m

nginx-service   10.254.208.231   <nodes>       80:30011/TCP     1d

[root@master tomcat]# kubectl get pods -o wide

NAME                        READY     STATUS    RESTARTS   AGE       IP            NODE

my-tomcat-464109745-ctmdf   1/1       Running   0          1h        10.255.1.5    node1

my-tomcat-464109745-wmxpz   1/1       Running   0          1h        10.255.95.4   node2

nginx-pod                   1/1       Running   1          1d        10.255.95.2   node2

nginx-rc-351xd              1/1       Running   1          1d        10.255.1.3    node1

访问tomcat

http://192.168.91.26:31111

http://192.168.91.27:31111