Tutorials Cloud Computing Tutorial
Service Discovery — Complete Guide
Service Discovery — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of Cloud Computing Tutorial on Toolliyo Academy.
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Cloud Computing Tutorial · Lesson 77 of 100
Service Discovery
Foundations ✓ → Platform ✓ → Ops → Projects
Ops · 3 — DevOps, security, scale · ~10 min · Cloud — Scalability & Distributed Systems
What is this?
Service discovery lets clients find healthy instances dynamically — DNS, registries, or mesh sidecars.
Why should you care?
CloudVerse K8s pods change IP constantly; discovery targets stable service names.
See it live — copy this example
Use AWS/Azure/GCP free tier or local Docker/Kind. Sketches and YAML are meant to be typed and adapted.
# Kubernetes Service (CloudVerse)
apiVersion: v1
kind: Service
metadata:
name: fraud-api
labels: { app: fraud-api }
spec:
selector: { app: fraud-api }
ports:
- name: http
port: 80
targetPort: 8080
type: ClusterIP
---
# In-cluster DNS: fraud-api.payments.svc.cluster.localWhat happened?
- Registries track health; clients resolve logical names.
- Mesh adds load balancing and mTLS transparently.
Practice next
- Create ClusterIP service.
- curl from debug pod by DNS name.
- Scale deployment; verify endpoints update.
- Try headless service for StatefulSet.
- Compare Consul vs K8s native discovery.
Remember
Logical names, not IPs. Health-aware routing. K8s DNS for in-cluster.
CloudVerse fraud lookup
Fraud service scales 2→8 pods during flash sale.
Outcome: Gateway resolves fraud-api; no config change.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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