Kube Builders

Harvester turns bare-metal servers into a hyperconverged platform combining VMs and containers using Kubernetes, KubeVirt, Longhorn, and Rancher. It supports live migration and distributed storage and is built for core-to-edge ops. More: https://ku.bz/0-LL0mwyj

We just published Kubernetes Architecture in Financial Services, a free technical book about platform design and operations. Drawing on public engineering talks and case studies from seven banks, it examines: - Tenant boundaries beyond namespaces. - Shared delivery controls and application ownership. - Policy maintenance, exceptions, adoption, and reporting. - Cross-cluster identity, reliability, external…

Kor is a CLI tool that scans your cluster and lists the unused resources nobody cleaned up, from forgotten ConfigMaps and Secrets to stale Services and PVCs. More: https://ku.bz/YzcpnL3gj

This tutorial shows how to run Azure DevOps agents on AKS so that KEDA spins up a fresh agent pod whenever the pipeline queue grows and removes it when the job is done. More: https://ku.bz/y7Kjp1WvS

Caching your largest container image in the AMI sounds like an easy win. But on EBS, it might not work. Jan Ludvik discovered that EBS lazy loading can silently undo image caching. The data isn't actually on disk when the node boots. Instead, it's loaded on demand from snapshots. So even though the image was "cached," the pod still had to pull it. His workaround: cache the smaller daemon set images (kube-proxy,…

Kubesafe is a tool that prevents accidental execution of dangerous commands on the wrong Kubernetes cluster by providing a safety net for cluster management. More: https://ku.bz/3hC23K79L

KubeShark is a Kubernetes skill for Claude Code and Codex that feeds the agent official best practices, so generated manifests stop using deprecated APIs, wildcard RBAC or missing resource limits. More: https://ku.bz/m6GhSVL9W

Ben Poland, Senior Staff Platform Engineer @ Faire, breaks down the fundamental architectural differences between Jenkins and Buildkite when running CI workloads on Kubernetes. He explains how Jenkins controllers handle the control plane (UI, pipeline parsing, work distribution) and pod management through the Kubernetes plugin , creating a bottleneck that limits scalability to around 1,500-2,000 pods per controller.…

Kubernetes problems often hide in controller timing, implicit defaults, and capacity assumptions. This week in Learn Kubernetes Weekly: 🔎 A production race condition left orphaned pods blocking new deployments. 📦 Source Hydrated Infrastructure Models commit rendered manifests for explicit GitOps audits. 🖥 Headlamp replaces the archived Kubernetes Dashboard and maps familiar workflows to a maintained UI. ⚙️…

This article tells how a GPU passthrough on a k3s worker VM put a whole Proxmox host into a boot loop, and how masking the guest-start service at the GRUB prompt rescued it. More: https://ku.bz/79pRFd6Zm