K8S安装（四）: 在K8S集群中部署应用示例 ，通过Ingress对外暴露应用服务

目标：搭建一个tomcat服务器并对外通过Ingress暴露

步骤1： 编写tomcat的Deployment和Service

 

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: app-tomcat
  labels:
    app: app-tomcat
spec:
  selector:
    matchLabels:
      app: app-tomcat
  template:
    metadata:
      labels:
        app: app-tomcat
    spec:
      containers:
      - name: tomcat-container1
        image: tomcat
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: tomcat-service
spec:
  type: ClusterIP
  selector:
    app: app-tomcat
  ports:
  - protocol: TCP
    port: 80
    targetPort: 8080

 

步骤二：编写Ingress 规则（特别注意：请在annotations中指定你的ingress是何种，此处我用的nginx-ingress所以是Nginx，否则无法通过配置的域名test.123.com访问）

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-web-test
  namespace: default
  annotations:
    kubernetes.io/ingress.class: "nginx"
spec:
  defaultBackend:
    service:
      name: tomcat-service
      port:
        number: 80
  rules:
  - host: test.123.com
    http:
      paths:
      - path: "/"
        pathType: Prefix
        backend:
          service:
            name: tomcat-service
            port:
              number: 80

步骤三：请在你的宿主机或者外部机器中修改hosts文件，添加解析记录，IP为Ingress所在节点的主机IP.

192.168.50.52 test.123.com

 

输入网址，即可访问！