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Building a Production-Ready Dual-Stack NTP Infrastructure with Chrony
This post documents a production-ready, dual-stack NTP design using Chrony. It covers upstream pools, peer configuration, server hardening, and monitoring techniques to deliver reliable time over both IPv4 and IPv6. The result is a resilient, DNS-independent NTP infrastructure suitable for virtualized environments.
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Building a Dual-Stack BIND 9 DNS Infrastructure on Rocky Linux
Built from scratch on Rocky Linux 10.1 Minimal, this post walks through deploying BIND 9 in a primary/secondary configuration with dual-stack IPv4/IPv6. It covers directory layout, SELinux permissions, firewall rules, recursive forwarding, zone transfer behavior, and the quirks of IPv6 reverse DNS (nibble format), with validation commands to confirm everything works.
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My Linux Customizations
An living post where I can keep Linux customizations documented for easy reference.
Bits, Bytes, & Radio Waves
A quiet journey through discovery and understanding.
Notes from practice
I use this site to document systems, configurations, and lessons learned as I work through real problems—both professionally and through personal experimentation. The goal is clarity: understand how something works, explain why it behaves the way it does, and make it reliable and repeatable.
These notes are written primarily for myself, but shared openly in case they help someone else avoid a dead end or reduce frustration. If you’d like to learn more, visit the About page.
If you have questions or comments, you’re always welcome to contact me.
Aaron Rombaut
Technologist & Writer