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Priyadharshini Arangan
Priyadharshini Arangan

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Best Practices for Kubernetes Services.

  1. Use Appropriate Service Types:
    • Choose the right service type based on your access requirements (ClusterIP for internal, NodePort or LoadBalancer for external access).
  2. Leverage Labels and Selectors:
    • Use meaningful labels for your pods and corresponding selectors in your services for efficient management.
  3. Set Resource Limits:
    • Define resource requests and limits for pods behind a service to ensure proper scheduling and prevent resource contention.
  4. Use Readiness Probes:
    • Implement readiness probes to ensure traffic is only sent to pods that are ready to handle requests.
  5. Consider Session Affinity:
    • Use session affinity when necessary to route a client's requests to the same pod.
  6. Use Headless Services:
    • For stateful applications or when you need DNS records for individual pods, use headless services.
  7. Implement Health Checks:
    • Use liveness and readiness probes to maintain service health and availability.
  8. Secure Services:
    • Use NetworkPolicies to control traffic to and from services.
    • For external services, consider using an Ingress controller with TLS termination.
  9. Monitor Service Performance:
    • Set up monitoring for your services to track metrics like latency, error rates, and throughput.
  10. Use ExternalName for External Services:
    • Leverage ExternalName services to represent external dependencies within your cluster.
  11. Consider Traffic Policies:
    • Use the appropriate externalTrafficPolicy (Cluster or Local) based on your requirements for source IP preservation and routing efficiency.
  12. Version Your Services:
    • Use labels to version your services, facilitating easier upgrades and rollbacks.
  13. Document Service Dependencies:
    • Maintain clear documentation of service dependencies to aid in troubleshooting and scaling decisions.
  14. Use Appropriate Ports:
    • Be mindful of the ports you expose in your services, adhering to standard port conventions where applicable.
  15. Implement Graceful Shutdown:
    • Ensure your applications can handle termination signals to allow for graceful pod shutdown when services are updated.

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