DNS Configuration and Management Lab
Master DNS fundamentals through hands-on practice with DNS queries, troubleshooting, and service discovery patterns.
Lab Overview
🛠Lab from the Platform Engineering Bootcamp. Used in Week 4. Bootcamp landing page: https://academy.tekanaid.com/bootcamps/platform-engineering-bootcamp Parent course(s):
- Week 4: Networking Fundamentals for Platform Engineers (slug: networking-fundamentals-platform-engineers)
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
Query DNS records (A, AAAA, CNAME, MX, TXT, NS) using dig, nslookup, and host
Understand DNS resolution flow from recursive resolver to authoritative nameserver
Trace resolution and troubleshoot with dig +trace
Configure local name resolution with /etc/hosts and simulate DNS-based service discovery
Prerequisites
basic networking knowledge
linux command line skills
understanding of IP addresses
Technologies Covered
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