Kubernetes部署Nginx/Tomcat

kubernetes集群已经部署好了，需要的话可以参考之前的文章 http://www.info110.com/Linux/2019-07/159548.htm

[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