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Fedora 44 on the Raspberry Pi 5
So where has the last six months gone ? I was planning on getting images done for Fedora 44 Beta but I was unwell and busy and ran out of time. So what better time to get them out than Pi Day! .
Topics /
Infrastructure & DevOps
The most popular blog posts about infrastructure & devops on Hacker News. 276 posts.
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Agentic Monitoring
Agents are structurally well suited to monitoring production systems.
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Why we built our own background agent
The craft of engineering is rapidly changing. We built our own coding agent to accelerate faster. Inspect is now open to teams outside Ramp through early access.
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How much of my observability data is waste?
After a decade in observability, one question kept coming back: how much of your data is waste?
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How Uber Protects Against Retry Storms
What if retries could know when they’re helping, and when they’re making things worse? Uber Engineering built error ownership to prevent and contain retry storms.
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Launching Route 53 Files
Four decades ago, when the Berkeley Internet Name Domain Server launched, it stored DNS records in "zone files". You could edit these files in vi , but BIND had to be told to reload them before your changes took effect. Later, other DNS servers came along, like Daniel Bernstein's tinydns, which served records directly…
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Electricity use of AI coding agents
Most of the discourse about the environmental impact of LLM use focuses on a ‘median query.’ What about a Claude Code session?
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RFC8950: Announce IPv4 with an IPv6 next-hop
This post covers how RFC8950 gives the ability to route IPv4 over IPv6 BGP sessions with IPv6 next-hops
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Log messages are mostly for the people operating your software
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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Native FreeBSD Kerberos/LDAP with FreeIPA/IDM
I want to make this clear in the first sentence because its biggest chance that people will read it – this article is entirely based on work done by Christian Hofstede-Kuhn (Larvitz) that wro…
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All I wanted was a custom domain email
Student, entrepeneur, researcher
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Package management is a wicked problem
Why fixing package managers is harder than it looks.
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The Hetzner Cloud network stack – history and technical overview
Learn how the Hetzner Cloud network stack has evolved and what role Open vSwitch, Private Networks, and Cloud Firewalls play.
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Flat Datacenter Networks at Scale at Amazon
The research roots of finding “optimal routing” networks trace back to the late 1970s. Mathematicians defined special kinds of networks called “expanders“. These are graphs with strong connectivity properties guaranteeing no subset of vertices can be isolated from the rest. In 1976, Leslie Valiant gave one of the…
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Securing Services with Rootless Containers
Some tips to improve security in applications deployed as containers.
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Bidirectional charging during grid outages
David asked a great question on my solar battery system post: why buy a small battery just for emergencies when electric cars have a large battery you can also use for other things? [1] This would be great, and seems like the obvious way for it to work: when the grid goes down the panels can charge the car when it's…
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Introduction to UEFI HTTP(s) Boot with QEMU/OVMF
The historic go-to solution for network booting is PXE. PXE is based on DHCP and TFTP. It is tricky to correctly configure, even trickier to make it highly available and good luck with the security with this clear-text unsigned protocol.
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Zero downtime migrations at petabyte scale (2024)
Data migrations are a critical part of the database lifecycle, and are sometimes necessary for version upgrades, sharding, or moving to a new platform. In many cases, migrations are painful and error-prone. In this article, we walk through how migrations are performed at PlanetScale, and offer advice on how to improve…
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Using HTTP/2 Cleartext for a server in Go 1.24
I'll give a brief outline of how to enable HTTP/2 cleartext (h2c) in a Go API server when you are using Go 1.24 or newer. This is useful in Cloud Run environments, which handles TLS termination but can take advantage of HTTP/2 features.
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Coding Agent VMs on NixOS with Microvm.nix
I have come to appreciate coding agents to be valuable tools for working with computer program code in any capacity, such as learning about any program’s architecture, diagnosing bugs or developing proofs of concept. Depending on the use-case, reviewing each command the agent wants to run can get tedious and…
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Dear Heroku: Uhh What's Going On?
An open letter urging Heroku to clarify its roadmap, define “sustaining engineering,” and communicate honest business intent to developers.
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I can haz smoller NixOS ISOs?
In which I painstakingly remove functionality from a Linux live image. Like a normal person.
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A first look at Aperture by Tailscale (private alpha)
Aperture is an AI gateway that doesn't get in the way of developers, and works with most AI tools.
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Sysadmining Like It's 2009
2026 legacy lab summer camp plan
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