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Understanding ClusterIP vs NodePort in Kubernetes A Comparative Guide to Kubernetes Service Types +91-7032290546 www.visualpath.in
What is a Kubernetes Service? Definition: A Kubernetes Service is an abstraction that defines a logical set of Pods and a policy to access them. Purpose: Enables communication between components or external clients. Why it matters: Ensures stable networking even if pod IPs change. +91-7032290546 www.visualpath.in
Types of Kubernetes Services ClusterIP (Default) NodePort LoadBalancer ExternalName (This presentation focuses on ClusterIP and NodePort) +91-7032290546 www.visualpath.in
What is ClusterIP? Definition: Exposes the service on an internal IP in the cluster. Use case: Internal communication only (e.g., microservice-to-microservice). Accessibility: Not accessible from outside the cluster. Default service type. +91-7032290546 www.visualpath.in
What is NodePort? Definition:Exposes the service on each Node s IP at a static port. Use case: Access the service externally using <NodeIP>:<NodePort>. Extension: Builds on top of ClusterIP internally. +91-7032290546 www.visualpath.in
Key Differences - At a Glance Feature ClusterIP NodePort Accessibility Internal only External (via Node IP) Default Yes No Port Range Random in-cluster 30000 32767 Use Case Microservices Development/testing/demo Security More secure (internal) Less secure (open ports) +91-7032290546 www.visualpath.in
Visual Diagram Left side: Diagram of ClusterIP (Pods communicate internally). Right side: Diagram of NodePort (External user reaches service via Node IP and port). (Use simple arrows and icons for clarity) +91-7032290546 www.visualpath.in
When to Use Each? ClusterIP: o For internal backend APIs o For services only used by other pods NodePort: o For exposing services during development o For quick external access without LoadBalancer +91-7032290546 www.visualpath.in
Summary ClusterIP = Internal only, default, more secure. NodePort = External access via static port. Choose based on your exposure needs and environment. +91-7032290546 www.visualpath.in
For More Information About Docker and Kubernetes Address:- Flat no: 205, 2nd Floor, Nilagiri Block, Aditya Enclave, Ameerpet, Hyderabad- 16 Ph. No: +91-998997107 Visit: www.visualpath.in E-Mail: online@visualpath.in www.visualpath.in +91-7032290546
Thank You Thank You Visit: www.visualpath.in +91-7032290546 www.visualpath.in
