Kubernetes orchestration

Kubernetes Orchestration

Best practices for Kubernetes deployments and operations.

When to Use

• Deploying applications to Kubernetes
• Writing or reviewing K8s manifests
• Setting up clusters and workloads

Core Concepts

Deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: app
        image: myapp:1.0.0
        ports:
        - containerPort: 8080
        resources:
          requests:
            memory: "128Mi"
            cpu: "100m"
          limits:
            memory: "256Mi"
            cpu: "200m"
        livenessProbe:
          httpGet:
            path: /health
            port: 8080
          initialDelaySeconds: 30
          periodSeconds: 10

Service

apiVersion: v1
kind: Service
metadata:
  name: app-service
spec:
  selector:
    app: myapp
  ports:
  - port: 80
    targetPort: 8080
  type: ClusterIP

ConfigMap & Secrets

apiVersion: v1
kind: ConfigMap
metadata:
  name: app-config
data:
  LOG_LEVEL: "info"
  MAX_CONNECTIONS: "100"
---
apiVersion: v1
kind: Secret
metadata:
  name: app-secret
type: Opaque
stringData:
  DATABASE_URL: "postgresql://user:pass@db:5432/app"

Best Practices

• Use labels consistently
• Set resource requests and limits
• Implement health checks (liveness, readiness, startup probes)
• Use ConfigMaps and Secrets for configuration
• Implement horizontal pod autoscaling (HPA)
• Use namespaces for environment separation

Resources

• Kubernetes Docs
• Kubernetes Best Practices