~/talk

It’s Always DNS: So Let’s Break It On Purpose

on YouTube 34m
Talkat ContainerDays Hamburg 2026 · 2026-09-02..09-04· [networking, kubernetes]

speakers

name:Joel Studler
links:none on file
name:Georgios Daskalopoulos
links:none on file

resources

video:https://youtu.be/OtC6udOCNe4
slides:none on file

summary

A cloud‑native DNS for a 5G core is built with PowerDNS + ExternalDNS and CoreDNS forwarders across Kubernetes clusters, using GitOps for automation and no shared database; chaos experiments inject pod scale‑downs and measure latency, queries per second and an accuracy score with a traffic generator at 50 qps accuracy metric. Cross‑cluster forwarding and multiple fallbacks keep resolution working until all forwarders die; a surprising failure mode appears after recovery when PowerDNS misses updates and clients see stale records.

AI-written summary · about

chapters (6)

  1. 0:00Introduction and setup
  2. 3:27Architecture overview
  3. 7:38Live demo breaking DNS
  4. 11:57Chaos testing and metrics
  5. 22:01Achievements and results
  6. 23:44Q&A session

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