# Alexander Extim

> Personal site of Alexander Extim — security, engineer and researcher working in DevOps/SRE and cloud infrastructure. The site shares technical notes and photography.

Alexander designs and operates application infrastructure: Kubernetes, CI/CD, observability and automation across AWS, GCP and Azure. This file points AI agents to the most useful, token-efficient (Markdown) versions of the site's content.

## Pages
- [About](https://extim.su/about/index.md): Background, skills, clouds, languages and tooling.
- [Photography](https://extim.su/photography/index.md): Photo collections from Montenegro and other places.

## Notes
- [Upgrading Kubernetes with emulated version ✅](https://extim.su/blog/upgrading-kubernetes-with-emulated-version-✅/index.md): Upgrading Kubernetes with emulated version 
- [Ingress NGINX Alternatives 🌝](https://extim.su/blog/ingress-nginx-alternatives-🌝/index.md): Ingress NGINX Alternatives 
- [Exposing tcp services like Kafka, MongoDB, and Clickhouse using Nginx Ingress Controller 2026 guide 🔥](https://extim.su/blog/exposing-tcp-services-like-kafka-mongodb-and-clickhouse-using-nginx-ingress-controller-2026-guide-🔥/index.md): Exposing tcp services like Kafka, MongoDB, and Clickhouse using Nginx Ingress Controller 2026 guide
- [Access Control Lists(ACL) in Linux 🔒](https://extim.su/blog/access-control-listsacl-in-linux-🔒/index.md): Stop fighting chmod: Meet Linux ACLs (Access Control Lists)
- [Kargo the New Promotion Orchestrator for Argo CD 🔥](https://extim.su/blog/kargo-the-new-promotion-orchestrator-for-argo-cd-🔥/index.md): Kargo the New Promotion Orchestrator for Argo CD
- [Kubectl Cheat Sheet 📎](https://extim.su/blog/kubectl-cheat-sheet-📎/index.md): Kubectl Cheat Sheet
- [Kubernetes Pod Level Resources Graduated 😈](https://extim.su/blog/kubernetes-pod-level-resources-graduated-😈/index.md): Helm or Kustomize, which one to use?
- [Helm 🆚 Kustomize](https://extim.su/blog/helm-🆚-kustomize/index.md): Helm or Kustomize, which one to use?
- [Talos and K8s cluster on Raspberry PI ✨](https://extim.su/blog/talos-and-k8s-cluster-on-raspberry-pi-✨/index.md): The most reliable ready-to-use K8s cluster on Raspberry PI
- [GitOps at Scale or What I have Learned in the Deployment Trenches 🐙](https://extim.su/blog/gitops-at-scale-or-what-i-have-learned-in-the-deployment-trenches-🐙/index.md): GitOps at Scale
- [Essential Linux commands 🫡](https://extim.su/blog/essential-linux-commands-🫡/index.md): Be good at Linux commands
- [Issuing certificates automatically in Nginx  🎉](https://extim.su/blog/issuing-certificates-automatically-in-nginx-🎉/index.md): automated certificate management through the ACMEv2 protocol in NGINX, aligning with Let’s Encrypt standards.
- [Kubernetes Secrets Store CSI Driver 🕵️‍♂️](https://extim.su/blog/kubernetes-secrets-store-csi-driver-🕵️‍♂️/index.md): Have you ever thought that your Kubernetes secrets could be so secret that even the ops team has to bribe the cluster to view them? I tried mounting secrets using ConfigMap—my API keys were less protected than free snacks at a meetup.
- [Big Tech now hires more AI models than Gen Z engineers 🤑](https://extim.su/blog/big-tech-now-hires-more-ai-models-than-gen-z-engineers-🤑/index.md): so a bunch of you have been bugging me about how to become an AI Engineer.
- [ChatGPT for long conversations 🙄](https://extim.su/blog/chatgpt-for-long-conversations-🙄/index.md): ChatGPT for long conversations
- [How to learn AI Engineering in 2025 🚀](https://extim.su/blog/how-to-learn-ai-engineering-in-2025-🚀/index.md): so a bunch of you have been bugging me about how to become an AI Engineer.
- [Linux: SIGTERM vs SIGKILL 🤓](https://extim.su/blog/linux-sigterm-vs-sigkill-🤓/index.md): Linux: SIGTERM vs SIGKILL
- [Embrace the New Year: A Tech-Infused Journey Begins!](https://extim.su/blog/embrace-the-new-year-a-tech-infused-journey-begins/index.md): Embrace the New Year: A Tech-Infused Journey Begins!

## Optional
- [Full content (llms-full.txt)](https://extim.su/llms-full.txt): Every page and note inlined as Markdown.
- [RSS feed](https://extim.su/feed.xml): Atom feed for real-time discovery.
- [Sitemap](https://extim.su/sitemap.xml): All indexable URLs.
- [GitHub](https://github.com/extimsu/): Source code and projects.