Path-based routing in Kubernetes - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is path-based routing in Kubernetes?

Path-based routing directs incoming traffic to different backend services based on the URL path in the request. It helps split traffic by URL parts.

beginner

Which Kubernetes resource commonly uses path-based routing?

The Ingress resource uses path-based routing to route traffic to different services depending on the request path.

intermediate

How do you specify path-based routing rules in a Kubernetes Ingress?

You define rules under the 'http' section with 'paths', each having a 'path' and a 'backend' service to route to.

intermediate

What happens if no path matches in a path-based routing rule?

If no path matches, the Ingress controller usually returns a 404 error or routes to a default backend if configured.

beginner

Why is path-based routing useful in microservices?

It allows different microservices to share one domain and route requests to the right service based on URL paths, simplifying access.

In Kubernetes, which resource is primarily used for path-based routing?

A ConfigMap

B Ingress

C Pod

D ServiceAccount

Ingress is the Kubernetes resource designed to manage external access and supports path-based routing.

What does a path-based routing rule in an Ingress specify?

A The resource limits for a pod

B The container image to use

C The URL path and the backend service to route to

D The node where the pod runs

Path-based routing rules define which URL paths route to which backend services.

If a request URL path does not match any path in the Ingress rules, what usually happens?

A The request is routed to all backends

B The pod restarts

C The request is ignored silently

D The request is routed to a default backend or returns 404

Ingress controllers return 404 or use a default backend if no path matches.

Which section in an Ingress YAML defines path-based routing rules?

A spec.rules.http.paths

B metadata.labels

C spec.template.spec.containers

D status.loadBalancer

The 'spec.rules.http.paths' section contains the path and backend service definitions.

Why is path-based routing helpful in a microservices architecture?

A It allows multiple services to share one domain with different URL paths

B It increases pod memory

C It automatically scales pods

D It encrypts network traffic

Path-based routing lets different microservices be accessed via different URL paths on the same domain.

Explain how path-based routing works in Kubernetes Ingress and why it is useful.

Think about how URLs decide which service gets the request.

Describe the structure of a path-based routing rule in a Kubernetes Ingress YAML file.

Focus on the YAML keys that define routing.