Service Discovery & DNS in K8s
Explore how Kubernetes handles service discovery and DNS resolution for inter-service communication.
Intro to Service Discovery
Welcome to Service Discovery & DNS in K8s! In a dynamic Kubernetes cluster, Pods are constantly created, destroyed, and moved, leading to ever-changing IP addresses.
How do applications running in one Pod find and communicate with applications in another Pod or Service?
This is where Service Discovery comes in. It's how services find each other without needing to know their specific, ephemeral IP addresses.
The Role of DNS in K8s
You might already know about DNS (Domain Name System) on the internet. It translates human-readable names like google.com into IP addresses.
Kubernetes uses a similar concept internally. Instead of relying on unstable Pod IPs, K8s assigns stable DNS names to its Services.
This allows your applications to connect to other services using simple, consistent names.
All lessons in this course
- Kubernetes Ingress & Routing
- Implementing Network Policies
- Service Discovery & DNS in K8s
- TLS Termination and Securing Ingress with HTTPS