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In defense of swap: common misconceptions (2018)
tl;dr: Having swap is a reasonably important part of a well functioning system. Without it, sane memory management becomes harder to achieve.
Topics /
Infrastructure & DevOps
The most popular blog posts about infrastructure & devops on Hacker News. 198 posts.
122
How to use your DSLR from 2008 as a webcam in 2022 (NixOS)
Why throw away your old Camera? In this guide we'll show you how simple it is to reuse your old Camera as a webcam using the NixOS linux distribution.
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Solving Common Problems with Kubernetes
A storytelling guide to starting k8s
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Why are nuclear power construction costs so high? Part III – the nuclear navy
This week we conclude our look at nuclear power construction costs. So far we’ve looked solely at conventional nuclear power stations that supply electricity to the grid for residential and commercial use. But civilian power stations aren’t the only sort of nuclear reactor that the US builds. The US Navy has been…
126
Quick Look at Rosetta on Linux
Yesterday, Apple did release RosettaLinux as part of the macOS Ventura preview. Let’s take a first quick look…
127
Using Firecracker and Go to run short, untrusted code execution jobs (2021)
A concrete use-case of Firecracker with code snippets
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Linux Kernel vs. DPDK: HTTP Performance Showdown
A head-to-head performance comparison between the Linux kernel's network stack, and a kernel-bypass stack powered by DPDK.
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Using Ansible and Nomad for a homelab (part 1)
How I migrated my Chef homelab to Ansible+Nomad
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Use a custom domain to send emails with Gmail using Cloudflare email routing
Edit: Updated with notes about revealing your main gmail address and deliverability, after this HN discussion
132
DIY out-of-band management: remote power button
I was pleasantly surprised by how easy it was to make it possible to push a PC’s power button remotely via MQTT by wiring up an ESP32 microcontroller, a MOSFET, a resistor, and a few jumper wires. While a commercial solution like IPMI offers many more features like remote serial, or remote image mounting, this DIY…
133
Falling for Kubernetes
I default to bare metal where I can. But recently I had to adopt a more complicated server management solution. And after a couple months of building for kubernetes, I must admit I'm falling for it more every day.
134
Phases of Netflix’s real-time data infrastructure
The blog post will share the four phases of Real-time Data Infrastructure’s iterative journey in Netflix (2015-2021). For each phase, we will go over the evolving business motivations, the team’s unique challenges, the strategy bets, and the use case patterns we discovered along the way.
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Is CBL-Mariner going to become Microsoft Linux?
Microsoft is increasingly standardizing on its in-house CBL-Mariner Linux distribution. Is this Microsoft Linux?
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Don't send to Gmail over IPv6
Yes, some people do it, and yes, for some people, it works fine. But..... If you're standing up a new server and it has an IPv6 IP address, ...
138
A robots.txt Problem
To prevent a part of our web application from being scanned by search engines and other web crawlers, we add a robots.txt like User-agen...
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Cron best practices
The time-based job scheduler cron(8) has been around since Version 7 Unix, and its crontab(5) syntax is familiar even for people who don’t do much Unix system administration. It’s standardised , reasonably flexible, simple to configure, and works reliably, and so it’s trusted by both system packages and users to…
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Deploying Kubernetes clusters in increasingly absurd languages
It’s been over 3 years since I published my most successful blog post about the abject horror of templated yaml and in many ways, I feel the same way now
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MLOps is a mess but that's to be expected
I discuss the messy state of MLOps today and how we are still in the early phases of a broader transformation to bring machine learning value to enterprises globally.
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I hope distributed is not the new default
I miss people. :-(
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The End of CI
Today, Continuous Integration (CI) is something that nearly every engineering organization does. However, I predict that in the future, nobody will do it.
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Starting with microservices
Starting a greenfield project with microservices is easy. The promises are wonderful but often they are far from reality. This time I’ll share my experience on the truth about microservices when starting a project from scratch.
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Static site hosting hurdles
When it comes to static sites, there are a myriad of solutions for authoring and compiling, but talk about hosting these static sites, and we are still in the early 2000s. I discuss the challenges one faces when hosting, and even make a proposal to solve some of these.
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Can I have a smaller Prometheus
For the past few weeks, I’ve been thinking about having a time series DB and visualization tool that is easy to use and light on resources, so it can be used locally for development. Tried se…
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A decade of major cache incidents at Twitter
This is a collection of information on severe ( SEV-0 or SEV-1 , the most severe incident classifications) incidents at Twitter that were at least partially attributed to cache from the time Twitter started using its current incident tracking JIRA (2012) to date (2022), with one bonus incident from before 2012. Not…