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Non-interactive SSH password authentication
Instead of using sshpass to non-interactively provide an SSH password, here is a simpler approach by harnessing the built-in features of OpenSSH...
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The latest blog posts to take off on Hacker News. 1,839 posts.
Infrastructure & DevOps
Any year
452
eBPF Networking Techniques – Packet Redirection
This is the first post of a many planned to shed light on the various networking techniques eBPF makes available to a Linux network developer.
453
Most 16-year-olds don't have servers in their rooms
Hi, I’m Varun. I have a server in my room. Actually, I have two of them. And I write a ton of my own code for them. And I love it. This is a story documenting my homelab’s quiet beginnings, its spiralling evolution, and its uncertain future.
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Making my own bed sensor
I recently created some “bed sensors” for my smart home that detect if one of us, or both of us, is in bed. I use a couple of pressure mats that detect when weight is applied to them, and stuck then under our mattress at around hip level and these tell my Home Assistant home automation platform if
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The new local data stack: Integrating Dagster, dbt and DuckDB
Lean and efficient MDS experience: Delivers better software engineering practices to the data ecosystem with the new local MDS stack comprised of Dagster, dbt and DuckDB which offers better developer productivity by enhancing testability of the E2E pipeline.
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Could we stop Yellowstone from erupting with a geothermal power plant?
It’s become fairly common knowledge that Yellowstone National Park, in addition to being incredibly beautiful, is sitting on top of an enormous supervolcano that catastrophically erupts every few hundred thousand years.
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Kubernetes Needs an LTS
There is no denying that containers have taken over the mindset of most modern teams. With containers, comes the need to have orchestration to run those containers and currently there is no real alternative to Kubernetes. Love it or hate it, it has become the standard platform we have largely
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A minimum complete tutorial of Linux ext4 file system (2017)
This is a complete tutorial for understanding the basics of Linux ext4 file system.
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The worst thing about Jenkins is that it works (2019)
Why I joined my company's CI team to fix Jenkins, the two options we weighed, and what I learned about developer-productivity work.
461
Linux being secure is a common misconception
Linux being secure is a common misconception in the security and privacy realm. Linux is thought to be secure primarily because of its source model, popular usage in servers, small userbase and confusion about its security features. This article is intended to debunk these misunderstandings by demonstrating the lack…
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The Curse of Docker
I'm heading to Las Vegas for re:invent soon, perhaps the most boring type of industry extravaganza there could be. In that spirit, I thought I would write something quick and oddly professional: I'm going to complain about Docker.
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I discovered caching CDNs were throttling my everyday browsing
Update: 28 Nov 2023 Zen Internet and I have amicably parted ways over this matter. Their technical response has been added to this post.
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Building a freedom-friendly WiFi pocket-router (2020)
Daniel Kulesz's personal website
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The Linux kernel has been accidentally hardcoded to a maximum of 8 cores
TL;DR This doesn’t mean that the scheduler can’t use more than 8 cores. The scheduler controls how to allocate tasks to available cores. How to schedule particular workloads efficiently…
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Ubuntu Pro Shenanigans
10/18/2026: Drive Specifications Matter (Complete) 10/09/2026: Gear Review: XTEINK X4 Pro 10/09/2026: Gear Review: OLYVUE V78 Dash Cam 10/01/2026: UNREDACTED Magazine Issue 013 09/21/2026: Updated OSINT Scripts 09/20/2026: New Socials 08/29/2026: Blog Archive 08/20/2026: Free PDF Self-Publishing Guide 08/19/2026: OS…
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Building an occupancy sensor with a $5 ESP32 and a serverless DB
How I built an occupancy sensor with an ESP32C3, Cloudflare Workers/D1, and Grafana
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GitHub Actions Are a Problem
A blog, mostly about programming
470
We used to build steel mills near cheap power. Now we build datacenters
Why are people so concerned with hardware power consumption nowadays? Some common answers to this question are that power is critically important for phones, tablets, and laptops and that we can put more silicon on a modern chip than we can effectively use . In 2001 Patrick Gelsinger observed that if scaling continued…
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From S3 to R2: An economic opportunity
Cloudflare's R2 is an undiscovered gem and is redefining the economics of data storage
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My 2023 all-flash ZFS NAS (Network Storage) build
For over 10 years now, I run two self-built NAS (Network Storage) devices which serve media (currently via Jellyfin) and run daily backups of all my PCs and servers. In this article, I describe my goals, which hardware I picked for my new build (and why) and how I set it up.
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Why cloud bandwidth is so obscenely expensive and what you can do about that
This article is an excerpt of my new book Cloudflare for Speed and Security where you will learn, among other things, how networking works in order to create fast, secure and scalable applications. If you are not overspending on compute (like many companies do because of "scale") then your biggest
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I think GCP is better than AWS (2020)
I originally posted this on Reddit so I could get a good sample of opinions from other engineers to see how they compared to mine before…
475
Background job queues and priorities may be the wrong path
I got this idea after reading the Reflections on GoodJob for Solid Queue from Ben Sheldon, who is the author of the excellent GoodJob.
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789 KB Linux Without MMU on RISC-V
A guide on building a tiny Linux (only 789 KB) that requires no MMU and deploying it on a RISC-V system, with custom userspace code.
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Zimaboard: The closest thing to my dream home server setup
I gave in to my impulses and bought myself a small single board computer to be my power-efficient home server, here's how it went.
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The anatomy of a smart bulb
I’ve been having some troubles with Zigbee. Yes, at our airbnb we have a rather big dining room where I’ve put 7 Zigbee RGBWW Smart bulbs. The problem is that each time I try to turn all 7 on or off there’s either a lag or some of them just won’t switch on or off. The controller is a Sonoff Zigbee 3.0 USB dongle, yes…
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Moving Marginalia to a new server
So the search engine is moving to a new server soon, thanks to the generous grant mentioned recently. If you visit search.marginalia.nu now, it may or may not use the old or new server. It’ll be like this for a while, since I need them both for testing and maintenance type work. I’ll also apologize if this post is a…