如何使用Java开发一个基于Spring Cloud Kubernetes的容器编排应用

<dependencies>
    <!-- Spring Boot 依赖 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <!-- Spring Cloud Kubernetes 依赖 -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-kubernetes-all</artifactId>
        <version>2.2.0.RELEASE</version>
    </dependency>
</dependencies>

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/hello")
public class HelloWorldController {

    @GetMapping
    public String hello() {
        return "Hello, Kubernetes!";
    }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

mvn spring-boot:build-image

docker push [镜像名称]

apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: demo-app
  template:
    metadata:
      labels:
        app: demo-app
    spec:
      containers:
        - name: demo-app
          image: [镜像名称]
          ports:
            - containerPort: 8080

kubectl apply -f deployment.yaml

kubectl get pods

kubectl expose deployment demo-app --type=LoadBalancer --name=demo-service

kubectl get services