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kubernetes-orchestration

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Kubernetes Orchestration

Kubernetes编排

Deploy and manage containerized applications at scale with Kubernetes orchestration, services, and production patterns.
借助Kubernetes编排、服务和生产模式，大规模部署和管理容器化应用。

Core Resources

核心资源

Deployment

Deployment

yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: myapp
        image: myapp:1.0.0
        ports:
        - containerPort: 3000
        env:
        - name: DATABASE_URL
          valueFrom:
            secretKeyRef:
              name: myapp-secrets
              key: database-url
        resources:
          requests:
            memory: "128Mi"
            cpu: "100m"
          limits:
            memory: "256Mi"
            cpu: "200m"
        livenessProbe:
          httpGet:
            path: /health
            port: 3000
          initialDelaySeconds: 30
          periodSeconds: 10
yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: myapp
        image: myapp:1.0.0
        ports:
        - containerPort: 3000
        env:
        - name: DATABASE_URL
          valueFrom:
            secretKeyRef:
              name: myapp-secrets
              key: database-url
        resources:
          requests:
            memory: "128Mi"
            cpu: "100m"
          limits:
            memory: "256Mi"
            cpu: "200m"
        livenessProbe:
          httpGet:
            path: /health
            port: 3000
          initialDelaySeconds: 30
          periodSeconds: 10

Service

Service

yaml
apiVersion: v1
kind: Service
metadata:
  name: myapp-service
spec:
  selector:
    app: myapp
  ports:
  - protocol: TCP
    port: 80
    targetPort: 3000
  type: LoadBalancer
yaml
apiVersion: v1
kind: Service
metadata:
  name: myapp-service
spec:
  selector:
    app: myapp
  ports:
  - protocol: TCP
    port: 80
    targetPort: 3000
  type: LoadBalancer

Ingress

Ingress

yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: myapp-ingress
  annotations:
    cert-manager.io/cluster-issuer: letsencrypt-prod
spec:
  tls:
  - hosts:
    - myapp.example.com
    secretName: myapp-tls
  rules:
  - host: myapp.example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: myapp-service
            port:
              number: 80
yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: myapp-ingress
  annotations:
    cert-manager.io/cluster-issuer: letsencrypt-prod
spec:
  tls:
  - hosts:
    - myapp.example.com
    secretName: myapp-tls
  rules:
  - host: myapp.example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: myapp-service
            port:
              number: 80

ConfigMap

ConfigMap

yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: myapp-config
data:
  app.env: production
  log.level: info
yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: myapp-config
data:
  app.env: production
  log.level: info

Best Practices

最佳实践

  1. Use namespaces for organization
  2. Implement resource limits
  3. Use liveness and readiness probes
  4. Manage secrets properly
  5. Use StatefulSets for stateful apps
  6. Implement network policies
  7. Use Helm for packaging
  8. Monitor with Prometheus
  1. 使用Namespace进行资源组织
  2. 配置资源限制
  3. 配置存活探针和就绪探针
  4. 妥善管理Secret
  5. 为有状态应用使用StatefulSet
  6. 配置网络策略
  7. 使用Helm进行应用打包
  8. 借助Prometheus进行监控

Resources

参考资源