Stefan Schimanski
@sttts.social
API Machinery @ ex-Upbound, ex-Redhat, Kubernetes, OpenSource, logician, restless, hungry & foolish, þetta reddast, http://github.com/sttts – Opinions&tweets are my own, http://mastodon.social/@sttts
Challenge accepted 💪
Will talk about my Christmas holiday project NanoSchnack @ Cloud Native Heidelberg meetup, Feb 26.
GPT-2 the Hard Way. Building a LLM from scratch.
community.cncf.io/events/detai...
#transformers #attention #tokens #embeddings #training #pytorch #h100 #inference
Will talk about my Christmas holiday project NanoSchnack @ Cloud Native Heidelberg meetup, Feb 26.
GPT-2 the Hard Way. Building a LLM from scratch.
community.cncf.io/events/detai...
#transformers #attention #tokens #embeddings #training #pytorch #h100 #inference
Building a GPT-2 Model from Scratch – Nanoschnack | CNCF
In-person Event - Join us for an engaging evening focused on the exciting world of AI model building. In this session, you'll learn about ...
community.cncf.io
February 3, 2026 at 6:45 PM
Challenge accepted 💪
Will talk about my Christmas holiday project NanoSchnack @ Cloud Native Heidelberg meetup, Feb 26.
GPT-2 the Hard Way. Building a LLM from scratch.
community.cncf.io/events/detai...
#transformers #attention #tokens #embeddings #training #pytorch #h100 #inference
Will talk about my Christmas holiday project NanoSchnack @ Cloud Native Heidelberg meetup, Feb 26.
GPT-2 the Hard Way. Building a LLM from scratch.
community.cncf.io/events/detai...
#transformers #attention #tokens #embeddings #training #pytorch #h100 #inference
It’s enterprise when you port the Claude github.com/steveyegge/b... workflow to native Jira. And it works using github.com/ankitpokhrel... 🎉
I have never commented so much in Jira issues about progress. Well I still don’t but now Claude does for me. Try it.
I have never commented so much in Jira issues about progress. Well I still don’t but now Claude does for me. Try it.
GitHub - steveyegge/beads: Beads - A memory upgrade for your coding agent
Beads - A memory upgrade for your coding agent. Contribute to steveyegge/beads development by creating an account on GitHub.
github.com
January 28, 2026 at 5:05 AM
It’s enterprise when you port the Claude github.com/steveyegge/b... workflow to native Jira. And it works using github.com/ankitpokhrel... 🎉
I have never commented so much in Jira issues about progress. Well I still don’t but now Claude does for me. Try it.
I have never commented so much in Jira issues about progress. Well I still don’t but now Claude does for me. Try it.
Newest Claude Code assumes "task" is an internal task, basically shadowing every other system like beads.
This gives same vibes as when Microsoft suddenly shipped Internet Explorer and every other browser had a hard time to get noticed.
This gives same vibes as when Microsoft suddenly shipped Internet Explorer and every other browser had a hard time to get noticed.
January 27, 2026 at 1:30 PM
Newest Claude Code assumes "task" is an internal task, basically shadowing every other system like beads.
This gives same vibes as when Microsoft suddenly shipped Internet Explorer and every other browser had a hard time to get noticed.
This gives same vibes as when Microsoft suddenly shipped Internet Explorer and every other browser had a hard time to get noticed.
🧵 Kausality's backend is just a webhook. Here's why that's the right design.
kausality.io
January 26, 2026 at 10:52 PM
🧵 Kausality's backend is just a webhook. Here's why that's the right design.
Re drift correction with github.com/kausality-io.... Here is a mock I want to implement. Directly in @SlackHQ.
Of course with some "expected drift policy" thing in parallel. This mock is the escalation for those cases slipping through.
Of course with some "expected drift policy" thing in parallel. This mock is the escalation for those cases slipping through.
January 26, 2026 at 8:12 PM
Re drift correction with github.com/kausality-io.... Here is a mock I want to implement. Directly in @SlackHQ.
Of course with some "expected drift policy" thing in parallel. This mock is the escalation for those cases slipping through.
Of course with some "expected drift policy" thing in parallel. This mock is the escalation for those cases slipping through.
Did interview and the candidate directly went to Excalidraw copying my task description from gdoc over. Loved it #visualthinking
January 26, 2026 at 8:07 PM
Did interview and the candidate directly went to Excalidraw copying my task description from gdoc over. Loved it #visualthinking
A story about automating IaC and how it goes horribly wrong 🧵
January 26, 2026 at 5:45 PM
A story about automating IaC and how it goes horribly wrong 🧵
Weekend experiment: Kausality
Drift detection for Kubernetes — know when your infrastructure changes unexpectedly.
⚠️ experimental, not ready for production ⚠️
github.com/kausality-io...
Drift detection for Kubernetes — know when your infrastructure changes unexpectedly.
⚠️ experimental, not ready for production ⚠️
github.com/kausality-io...
GitHub - kausality-io/kausality: Causal traceability for Kubernetes resource mutations
Causal traceability for Kubernetes resource mutations - kausality-io/kausality
github.com
January 26, 2026 at 3:12 PM
Weekend experiment: Kausality
Drift detection for Kubernetes — know when your infrastructure changes unexpectedly.
⚠️ experimental, not ready for production ⚠️
github.com/kausality-io...
Drift detection for Kubernetes — know when your infrastructure changes unexpectedly.
⚠️ experimental, not ready for production ⚠️
github.com/kausality-io...
Multicluster Cert Manager 😎 – Zach contributed the controller sharding implementation to github.com/kubernetes-s... and now uses that to demo how to build a central cert-manager. Awesome use-case.
medium.com/@zach.dsmith...
medium.com/@zach.dsmith...
GitHub - kubernetes-sigs/multicluster-runtime: Library for multi-cluster controllers with controller-runtime
Library for multi-cluster controllers with controller-runtime - kubernetes-sigs/multicluster-runtime
github.com
January 24, 2026 at 5:45 PM
Multicluster Cert Manager 😎 – Zach contributed the controller sharding implementation to github.com/kubernetes-s... and now uses that to demo how to build a central cert-manager. Awesome use-case.
medium.com/@zach.dsmith...
medium.com/@zach.dsmith...
Hire people who removed code (not tests).
Don't look for people who added the most.
Don't look for people who added the most.
November 7, 2025 at 3:21 AM
Hire people who removed code (not tests).
Don't look for people who added the most.
Don't look for people who added the most.
Lang ist es her, und es ist wieder Zeit: unser Kubernetes Meetup in Frankfurt in Neuauflage: Modern K8s.
Am 3. November im @codecentric Office.
https://www.meetup.com/frankfurt-am-main-kubernetes-meetup/events/311516952/
Am 3. November im @codecentric Office.
https://www.meetup.com/frankfurt-am-main-kubernetes-meetup/events/311516952/
Modern K8s, Mon, Nov 3, 2025, 6:00 PM | Meetup
Es ist wieder soweit. Das nächste Meetup wird geschultert von den zwei K8s-Größen:
Stefan Schimanski und Christopher Haar. Wie immer wird gebeten mitzudiskutieren <3
**Hor
www.meetup.com
October 13, 2025 at 6:16 PM
Lang ist es her, und es ist wieder Zeit: unser Kubernetes Meetup in Frankfurt in Neuauflage: Modern K8s.
Am 3. November im @codecentric Office.
https://www.meetup.com/frankfurt-am-main-kubernetes-meetup/events/311516952/
Am 3. November im @codecentric Office.
https://www.meetup.com/frankfurt-am-main-kubernetes-meetup/events/311516952/
Reposted by Stefan Schimanski
Tell me you're old without telling me you're old.
October 10, 2025 at 9:41 AM
Tell me you're old without telling me you're old.
kc – kubernetes commander
October 9, 2025 at 5:36 PM
kc – kubernetes commander
Don't trust code that you have not vibe coded yourself.
October 8, 2025 at 6:55 PM
Don't trust code that you have not vibe coded yourself.
When working with an agent, will you put requirements and stories into Jira?
September 27, 2025 at 4:35 PM
When working with an agent, will you put requirements and stories into Jira?
Today is a good day to vibe code something. Wish me luck.
September 26, 2025 at 7:35 AM
Today is a good day to vibe code something. Wish me luck.
Is it time for comment-free code? And then an IDE adding them dynamically following your favorite style on-the-fly?
September 25, 2025 at 8:35 AM
Is it time for comment-free code? And then an IDE adding them dynamically following your favorite style on-the-fly?
Every time again, car rental must be disrupted. Looking at you @TeamEuropcar_en. If you want to experience (IT) processes of the 80ies, this is the place.
September 5, 2025 at 4:55 PM
Every time again, car rental must be disrupted. Looking at you @TeamEuropcar_en. If you want to experience (IT) processes of the 80ies, this is the place.
"Did I leave the agent coding in yolo mode?" is the new "Did I switch the stove off?"
September 3, 2025 at 7:15 PM
"Did I leave the agent coding in yolo mode?" is the new "Did I switch the stove off?"
Wow, @twintapp in 🇨🇭 is so incredibly 2002. Prepaid payment where prepaid means to put money on your mobile by buying credit at @coop_ch shops, at least for us non-Swiss visitors without Swiss bank account. Telefonkarten Vibes.
August 13, 2025 at 8:05 PM
Wow, @twintapp in 🇨🇭 is so incredibly 2002. Prepaid payment where prepaid means to put money on your mobile by buying credit at @coop_ch shops, at least for us non-Swiss visitors without Swiss bank account. Telefonkarten Vibes.
Added custom subresources to CRDs in our internal kube code based generic control plane: 194 lines of code. One day of work 😎
August 8, 2025 at 3:25 PM
Added custom subresources to CRDs in our internal kube code based generic control plane: 194 lines of code. One day of work 😎
Little @KubeCon_ fomo. Have a great conference everybody!
August 8, 2025 at 1:05 PM
Little @KubeCon_ fomo. Have a great conference everybody!
multicluster-runtime provider that watches kubeconfig secrets in a namespace and dynamically engages controllers 🚀
https://github.com/kubernetes-sigs/multicluster-runtime/pull/45
https://github.com/kubernetes-sigs/multicluster-runtime/pull/45
🌱 Kubeconfig-Based Provider by FourFifthsCode · Pull Request #45 · kubernetes-sigs/multicluster-runtime
Follow up to @christensenjairus PR
Kubeconfig-based multi-cluster provider. It reads secrets from the operator's namespace with a given label and engages the clusters that the secret applies to...
github.com
July 5, 2025 at 5:35 PM
multicluster-runtime provider that watches kubeconfig secrets in a namespace and dynamically engages controllers 🚀
https://github.com/kubernetes-sigs/multicluster-runtime/pull/45
https://github.com/kubernetes-sigs/multicluster-runtime/pull/45
AI creates PR (on my machine). I review. Can I approve? What does the Github/lab netiquette say?
July 3, 2025 at 3:25 PM
AI creates PR (on my machine). I review. Can I approve? What does the Github/lab netiquette say?