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Use a laptop as a 2nd display on Linux using FreeRDP
Production systems for ecommerce, finance, operations, and applied AI - built and operated for two decades.
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Roll your own Ngrok with Nginx, Letsencrypt, and SSH reverse tunnelling
Ngrok is a fantastic tool for creating a secure tunnel from the public web to a machine behind NAT or a firewall. Sadly, it costs money and it’s proprietary. If you’re a developer, odds are that you’re already renting a server in the public cloud, so why not roll your own ngrok?
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Snap updates happen without user consent
Recent versions of Ubuntu turned on a particularly annoying feature: intrusive system notifications that warn of the pending update of a Snap managed application. Here’s an example:
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Tailscale ate my network (and I love it)
No matter where you go, there you are If you're like me, you travel occasionally. Access to your office from home, or from an airport loun...
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We disabled Google AMP at Tribune Publishing
Ahead of its June 2021 algorithm update, Google made a significant announcement as part of its shift to emphasize overall page experience…
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Airflow's Problem
In 2022, data engineers manage forests, not trees
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Surviving the front page of Hacker News on a 50 Mbps uplink
Overview of basic analytics during that one time my blog post got traction on HackerNews, and the steps I took to prepare for just this occasion.
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Linux boot partitions and how to set them up
Posts and writings by Lennart Poettering
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mmWave radar, you won't see it coming
Made in Notion, the connected workspace where AI agents and teams organize docs, projects and knowledge together.
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Using a catch-all domain is a mistake
After about a decade of dealing with this madness, surely it's been worthwhile? No, not really.
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AWS IAM Roles, a tale of unnecessary complexity
This is going to be a highly opinionated blog post. I think AWS is great and use it daily, but their implementation of IAM is unnecessarily complicated.
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Problems with “graceful shutdown” in Kubernetes (2019)
Grace is overrated
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Repurposing an old Android phone as a web server
A programmer's blog with posts about Ruby, web development, algorithms and data structure.
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There is no “software supply chain”
In actual supply chains, money is changing hands. A server manufacturer is paying for PCB fabrication, who is paying their suppliers for raw materials and equipment, and so on until the whole thing eventually loops back on itself when a mining company needs to buy a server.
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Deployment and infrastructure for a bootstrapped webapp with 150k monthly visits
How I deploy my webapp using blue-green deployment and zero rocket-science
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Home lab beginners guide (2021)
My home lab in a 12U rack as of March 2026. What is a Home Lab? Think of a home lab as a place where you can fail in the privacy of your own home. As
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GitHub Actions Pitfalls
During one of my assignments, I worked with GitHub Actions pretty much every day. I implemented workflows, created new actions, and helped people migrate their projects from jenkins to actions. As much as I like actions – and I like them a lot – there are some things that caught me off guard. I have collected some of…
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Should you use Let's Encrypt for internal hostnames?
Julien Savoie has written a brilliant post explaining how you can enable https on your intranet. This is useful for several reasons. It means your employees aren't constantly fighting browser warnings when trying to submit stuff internally. All your http traffic is encrypted. You don't need to install a self-generated…
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DevOps: An idea so good, no one admits they don’t do it
The ideas behind the DevOps movements undeniably changed the software development world for the better - but by now, the term “DevOps” has lost all meaning. Sometimes an idea is so good, that you can’t argue with it. I’m not saying that the original idea behind “DevOps” was perfect - I’ve written about some of the…
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2022 was the year of Linux on the Desktop?
It finally happened!
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The McMurdo Wastewater Treatment Plant
Sweet, sweet humidity.
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Writing systemd units that stop gracefully before shutdown
systemd Shutdown Units
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General guidance when working as a cloud engineer
From the depths of the IT world, there are things that you only learn through experience.
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The FreeBSD/Firecracker Platform
I started working on this on June 20th mainly out of curiosity: I had heard that Firecracker had PVH boot support (which was in fact mistaken!) and I knew that FreeBSD could boot in PVH mode from Xen, so I wondered just how hard it would be to get FreeBSD up and running. Not impossible, as it turned out, but a bit…
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Single dependency stacks
Life with Postgres only.
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“Who Should Write the Terraform?”
Working in Cloud Native consulting , I’m often asked about who should do various bits of ‘the platform work ‘.
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Going IPv6 Only
How would the current internet function when you're on a native IPv6 host without any IPv4 instead of using any of the IPv4 workarounds? Find out with a few firewall rules!