Orchestration avec Kubernetes

Kubernetes est la solution standard pour l'orchestration des conteneurs. Nous allons voir comment déployer et gérer nos microservices sur un cluster Kubernetes.

1. Configuration de Base

1.1 Déploiement des Services

# product-service-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: product-service
spec:
  replicas: 3
  selector:
    matchLabels:
      app: product-service
  template:
    metadata:
      labels:
        app: product-service
    spec:
      containers:
      - name: product-service
        image: product-service:latest
        ports:
        - containerPort: 8081
        env:
        - name: SPRING_PROFILES_ACTIVE
          value: "prod"
        - name: EUREKA_CLIENT_SERVICEURL_DEFAULTZONE
          value: "http://eureka-server:8761/eureka/"
        - name: SPRING_CLOUD_CONFIG_URI
          value: "http://config-server:8888"
        resources:
          requests:
            memory: "512Mi"
            cpu: "200m"
          limits:
            memory: "1Gi"
            cpu: "500m"
        readinessProbe:
          httpGet:
            path: /actuator/health
            port: 8081
          initialDelaySeconds: 30
          periodSeconds: 10
        livenessProbe:
          httpGet:
            path: /actuator/health
            port: 8081
          initialDelaySeconds: 60
          periodSeconds: 20