ACRL's first public postmortem is now available for free subscribers :P
Learn more about how a race condition between cert-manager, the SimKube controller, and a mutating webhook configuration took down our (currently unavailable to the public) SimKube CI runner!
https://blog.appliedcomputing.io/p/postmortem-intermittent-failure-in
#kubernetes #simkube #webhook #cicd #distributedsystems #devops
In case you were wondering what I was up to at KubeCon, it was incredibly important content marketing.
https://youtube.com/shorts/ZDlQzhAl8zI
Looking forward to seeing you all next year for "Can U Fit In The Kube 2"!!!!
KubeCon is next week! Come find me, ask me questions about SimKube, and get a Mr. Squidler sticker!!!
https://youtube.com/shorts/ngsHBkfEoho?feature=share
I have a calendar set up here if you want to book some time: https://cal.com/drmorr/kubecon
Filmed by my Developer Relations Consultant @bizzybits and her partner!
Mission Impossible XII: Upgrade Kubernetes (spoiler warning: using SimKube makes upgrading easier!)
https://youtube.com/shorts/BW-iYyO_QG8
Want to know more? Come chat with us at KubeCon:
The Bluth family does Kubernetes. Filmed along with my good friend and amazing engineer, @bizzybits!
https://youtube.com/shorts/KEjFjpHKi2M
Wish your company was less like the Bluth company? Come chat with us at KubeCon to find out how!
https://cal.com/drmorr/kubecon
#kubernetes #k8s #simkube #kubecon #arresteddevelopment #banana
"Oh, we doin' video now, huh?"
Learn more about my foray into video editing and why all my videos look like they were made by a 2-year-old trying to fit in with the teens.
Wake up, babe, new ACRL goofy promo video just dropped!
Ever wondered how you pronounce skctl, or why we have so many ctls in the first place? This video will tell you why.
Come chat with us at KubeCon in Atlanta! https://cal.com/drmorr/kubecon
Surprising everybody, nobody watched my video on TikTok.
You can make up for it by watching it here! New video dropping tomorrow :D
What's SimKube, precious???
https://www.youtube.com/watch?v=jUE2YdUpAYQ
Come chat with me at KubeCon in Atlanta if you want to know more!
Streaming List responses is going to be a great improvement for the SimKube tracer, which just List-Watches, you know, everything.
https://kubernetes.io/blog/2025/05/09/kubernetes-v1-33-streaming-list-responses/
Oh snap! My most recent blog post made it onto @thisweekinrust! Very exciting!
https://blog.appliedcomputing.io/p/make-the-easy-change-hard
https://this-week-in-rust.org/blog/2025/08/27/this-week-in-rust-614/
In today's blog post, I talk about how I turned the advice to "Make the hard change easy, then make the easy change" on its head: I made the easy change hard, and then I made a hard change 😂
Hopefully there's some practical software architecture/design/Rust tips in here for you all as well. Enjoy!
https://blog.appliedcomputing.io/p/make-the-easy-change-hard
SimKube 2.4.0 was released last night!
Main new "feature" (you could argue this is a bugfix, possibly) is that if you export a trace, objects that are owned by other objects in the trace are discarded. You don't want a situation where your trace file contains both (for example) a Deployment AND the ReplicaSet that the deployment owns.
Why not? Because when you replay the trace, your simulated cluster will end up with TWO replicasets: the one stored in the tracefile, and the one created by the deployment controller.
In principle this is a simple change but it actually took quite a bit of refactoring work to make it happen--will talk more about that in my upcoming blog post on the subject.
The graphs at the end remind me a lot of the SimKube work I did last year, only at a much larger scale. I wonder if they'd be willing to release a trace of their work? I'd go bananas with SimKube on that.
https://blog.appliedcomputing.io/p/using-simkube-10-comparing-kubernetes
Ok my blog post about my work with Astronomer is public now, go read it!
https://blog.appliedcomputing.io/p/astronomer-saving-megabux-with-sql
Hey! Hey you! Do you want a sneak peek at the work I did over the last six months for Astronomer? Yes, that Astronomer! Sure you do! Head over and sign up for a paid subscription and help me go to KubeCon this year.
Or just read the article on Monday with all the normies, your choice.
https://blog.appliedcomputing.io/p/astronomer-saving-megabux-with-sql
It has taken longer than I would have preferred to get this article up, but I just published a recap of my experience as a Harvey Mudd College clinic liaison from last year! The team did some really exciting work on data generation for SimKube, and I'm hopeful to be able to continue working with HMC again in the upcoming academic year. Check it out!
https://blog.appliedcomputing.io/p/contraction-hierarchies-hmc-clinic
No blog post this week, because I was on another podcast! This time was Kubernetes for Humans with Itiel Shwartz from Komodor -- check it out! Of course I was talking about SimKube.
One of the most common questions I get about SimKube (and/or Kubernetes simulation in general) is "What is a trace, actually?"
So I wrote a blog post about it.
Hey, look, it's me, I did a podcast! I had so much fun doing this. You should all listen, not only because it's me, but also because Mike and Erik are really awesome, genuine people. Go check out their other episodes, too!
