Kubernetes部署集群Tomcat

基础配置

主机名	IP	系统版本
k8s-master	172.21.3.30	CentOS7.8
k8s-node1	172.21.3.21	CentOS7.8
k8s-node2	172.21.3.22	CentOS7.8

 

创建namespace命名空间

kubectl create namespace tomcat

创建Pod

cat iae-rc.yaml
----------
apiVersion: v1
kind: ReplicationController
metadata:
  name: web-controller
spec:
  replicas: 4
  selector:
    name: web
  template:
    metadata:
     labels:
       name: web
    spec:
     containers:
     - name: web
       image: 172.21.3.23/tomcat/tomcat7
       imagePullPolicy: IfNotPresent
       tty: true
       ports:
       - containerPort: 8080  #tomcat端口
       volumeMounts:
       - name: web-project-path
         mountPath: /usr/java/tomcat-8080/webapps/ 
       - name: web-log-path
         mountPath: /usr/java/tomcat-8080/logs/   
     volumes:
     - name: web-project-path
       hostPath: 
         path: /opt/tomcat/webapps/ 
     - name: web-log-path
       hostPath: 
         path: /opt/tomcat/logs/   
#创建Pod容器
kubectl apply -f iae-rc.yaml -n tomcat

创建Service

 cat iae-svc.yaml 
-----------------
apiVersion: v1
kind: Service
metadata:
  name: web-service-nodeport
spec:
  type: NodePort
  ports:
    - port: 8000   #转发端口
      targetPort: 8080   #Pod端口
      nodePort: 30090   #暴露端口
      protocol: TCP
  selector:
    name: web
#创建Service
kubectl apply -f iae-svc.yaml -n tomcat

测试

访问：http://172.21.3.30:30090