A quick writeup for a longstanding issue I’ve had that’s rendered CephFS-backed PersistentVolumes useless on my home K8S cluster. libceph on worker nodes complains about mons speaking the wrong protocol and that wasn’t a red herring, it was the key to the problem all along.
2023-12-14 | #3d-printing #trident
How to get a DSI display (ribbon cable) display to work with a Raspberry Pi compute module on a Manta M8P.
2023-10-10 | #3d-printing #klipper #trident #voron
Notes on getting the BigTreeTech Manta M8P v2.0 printer MCU flashed and working, plus some clarifying points that should be useful to owners of an M8P v1.0/v1.1 board. Includes some info on how to configure for CANbus and how to get the BigTreeTech EBB SB2209 board flashed and working as well.
2023-07-30 | #k8s #networking
A whirlwind dive into kube LoadBalancer services, and a lesson in how things are not always what they seem.
2023-07-15 | #k8s
ArgoCD Image Updater is a tool that works in concert with ArgoCD to update images automatically in your Kubernetes cluster based on a set of rules. Its primary limitation is it requires you use either Helm or Kustomize to deploy your application, as it uses properties of those tools to update the image. But since Kustomize is so lightweight, it’s actually straightforward to (ab)use it to make ArgoCD Image Updater work for you.
2023-04-28 | #3d-design #woodworking
In which I design and build a new entertainment center
2022-07-27 | #k8s #prometheus
Up until recently, I was running two separate Prometheus instances – one on a Raspberry Pi, and the other in my k3s cluster using kube-prometheus-stack. I wanted to unify them, ideally to simplify management and version control. The challenge here is in how to manage the scrape targets for out-of-cluster resources. Thanks to my friend Justin, I was able to use a much more elegant solution. Options The basic way When deploying kube-prometheus-stack, define additionalScrapeConfigs.
On my home K3S cluster, I was running into a string of weird DNS issues. Here’s how I ended up fixing it. Architecture Overview 6-node K3S cluster (3x worker, 3x control plane) In-cluster DNS using standard off-the-shelf CoreDNS Intranet DNS provided by PowerDNS 2 DNS servers Each runs PDNS Authoritative (for internal zone example.com and reverse) Each runs PDNS Recursor (for all other queries; forwards to auth for example.com) Internet DNS for example.
2022-05-18 | #games #zelda
Last week, I completed a longtime personal goal. I can now say I’ve beaten all the mainline Zelda games! How do I define “mainline Zelda”? More or less, anything in the Hyrule Historia, plus BotW which wasn’t released when the book came out. This doesn’t include the CD-i games, nor any of the spinoff games such as Hyrule Warriors or Link’s Crossbow Training. It also doesn’t include the games that require you to have friends to play…
2020-11-17 | #blog #organization #rfc #taskmanagement
I’ve long struggled with finding an organizational, note taking, and task management system that works for me. I feel like I’ve tried dang near everything out there, but nothing really “sticks”. In this blog post, I focus mostly on technological solutions. While not a hard requirement in my mind, the convenience of not having to keep a physical thing on my person. Plus, my handwriting is atrocious! A further problem I have is the divide between work and personal.
