====== Service ======

A Service provides a **stable network endpoint** to access Pods.

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===== Why needed =====

Pods are unstable:
  * IP changes when restarted
  * Pods can be recreated anytime

Service solves this problem by providing:
  * Stable DNS name
  * Stable IP inside cluster

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===== Example =====


Service: my-api
→ routes to Pod A
→ routes to Pod B


Even if Pods change:
  * Service stays the same

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===== Service types =====

  * ClusterIP → internal only
  * NodePort → access via node port
  * LoadBalancer → external cloud access
  * ExternalName → DNS mapping

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===== Real-world analogy =====

Service = "front door"

Users do NOT talk to Pods directly.
They talk to the Service.