What actually fixed it — and why.
Deep notes on Active Directory, PowerShell, and the infrastructure that pages you at 3am. Every fix here ran in a real homelab first. Pick your situation:
“I’m new to Active Directory.”
Start the 13-part concept series, sequenced so each idea rests on the last.
open the series → for the on-call“Something’s broken right now.”
Troubleshooting filed by the literal error text — search the symptom.
search by symptom → for the automator“I need to script this away.”
PowerShell modules and pipelines pulled from the toolkit that runs the lab.
open the toolkit → for the builder“I’m standing up a homelab.”
Proxmox, chrony/NTP, and Windows Server 2025 DCs, scaled to one box.
open the homelab →-
DNS Aging and Scavenging
Windows · DNS DNS Aging and Scavenging Aging and scavenging are the two settings that decide whether stale DNS records clean themselves up automatically or sit in the zone indefinitely,…
Two ways in: sequenced chapters meant to be read in order, or the full topic index for everything else.
- Active Directory (55)
- AD Concept Series (13)
- AI Tools (21)
- Claude Code (10)
- Codex (9)
- DevOps (13)
- Terraform (13)
- Homelab (11)
- Proxmox (7)
- NTP (4)
- PowerShell (17)
- PowerShell Basics (7)
- PowerShell Scripts (7)
- Troubleshooting (24)
- Windows (29)
Newest first — this feed keeps itself current as new notes publish.
I run the systems nobody notices — until they break.
I’m Shankar, a Senior SRE in Mangalore. This manual is where I write down what actually fixed the problem and why, in plain language — the notes I wish I’d had at 3am, tested in a homelab before they reach you.
Read my full story →