DNS Configuration and Management Lab
Master DNS fundamentals through hands-on practice with DNS queries, troubleshooting, and service discovery patterns.
Lab Overview
In this hands-on lab, you'll master DNS (Domain Name System) configuration and troubleshooting - essential skills for platform engineers managing web applications and services.
You'll use professional DNS tools like dig, nslookup, and host to query DNS records, understand DNS resolution, explore different record types, and learn DNS troubleshooting techniques.
By the end of this lab, you'll understand:
- DNS record types (A, AAAA, CNAME, MX, TXT, NS) and how to query them
- DNS query process and resolution hierarchy
- Local DNS configuration using /etc/hosts
- TTL and DNS caching behavior
- DNS troubleshooting with dig +trace and other tools
- Service discovery patterns for microservices and Kubernetes
What You'll Learn
Configure DNS records (A, CNAME, MX, TXT) for a domain using Route 53 or equivalent
Understand DNS resolution flow from recursive resolver to authoritative nameserver
Test DNS propagation using dig, nslookup, and curl to verify record configuration
Set up DNS-based service discovery for internal microservices
Prerequisites
basic networking knowledge
linux command line skills
understanding of IP addresses
Technologies Covered
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