Kubernetes实战指南：零宕机无缝迁移Spring Cloud至k8s

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-spring-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: my-spring-app
  template:
    metadata:
      labels:
        app: my-spring-app
    spec:
      containers:
      - name: my-spring-app
        image: my-spring-app:latest
        ports:
        - containerPort: 8080
        readinessProbe:
          httpGet:
            path: /actuator/health
            port: 8080
          initialDelaySeconds: 10
          periodSeconds: 10
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        livenessProbe:
          httpGet:
            path: /actuator/health
            port: 8080
          initialDelaySeconds: 10
          periodSeconds: 10
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
---
apiVersion: v1
kind: Service
metadata:
  name: my-spring-app-service
spec:
  selector:
    app: my-spring-app
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080
  type: LoadBalancer

这个代码实例展示了如何在Kubernetes上部署一个带有健康检查的Spring Boot应用。它定义了一个Deployment来创建应用的实例，并且定义了一个Service来暴露应用，使用LoadBalancer类型使得可以从外部访问应用。此外，健康检查被配置为HTTP GET请求，以确保Kubernetes知道应用实例是否健康。