$ k8scalc blog --list
Blog
Practical guides on self-hosted Kubernetes, Hetzner Cloud, storage, observability, and AI infrastructure — from real production experience.
Hetzner vs DigitalOcean for Kubernetes in 2025: An Honest Comparison
Hetzner is 3–5× cheaper than DigitalOcean for equivalent Kubernetes compute. But DO has managed K8s, better global coverage, and a larger app marketplace. Here's when each is the right choice.
Kubernetes Certificate Renewal: What Breaks and How to Fix It
kubeadm certificates expire after 1 year. Here's what actually breaks, how to check expiry, and the exact commands to renew before your cluster goes read-only.
How Much VRAM Do You Need to Run LLMs? A Practical Guide
Calculate exactly how much GPU memory you need to run Llama 3, Mistral, Gemma, and other LLMs at different quantization levels. FP16, INT4, GGUF explained.
Longhorn vs Rook/Ceph for Kubernetes Storage: Which Should You Use?
A practical comparison of Longhorn and Rook/Ceph for self-hosted Kubernetes storage — setup complexity, resource usage, performance, and when each is the right choice.
Self-Hosted Kubernetes on Hetzner Cloud: Complete Setup Guide (2025)
A practical guide to running a production-grade HA Kubernetes cluster on Hetzner Cloud using kubeadm, HAProxy, Keepalived, and Longhorn — at a fraction of managed K8s cost.