E-Whisper

A complete practice of integrating metrics monitoring for Tailscale proxies with ProxyGroup and ProxyClass, and why we ultimately abandoned the seemingly elegant "one default ProxyClass to rule them a

A power loss midway through an Ubuntu 26.04 upgrade bricked the machine. This article documents the complete rescue using a Live USB and chroot to repair the filesystem, dpkg, GRUB, and initramfs.

A complete walkthrough of bringing a QNAP NAS into Prometheus monitoring: running node-exporter and smartctl-exporter via Container Station, hitting pitfalls like SCSI misdetection, device permissions

Since Ubuntu 24.04, linux-firmware has been split into a meta package plus 18 vendor subpackages, and a direct apt remove would take the kernel upgrade path down with it. This article uses the linux-f

A record of the real-world pitfalls encountered while upgrading 4 N100 nodes in place from Ubuntu 24.04 LTS to 26.04 LTS, covering the upgrade path, pre-upgrade backups, a must-check checklist, and tr

A troubleshooting record of an OSD Deployment that disappeared after a power loss in a HomeLab Rook-Ceph cluster, where a three-way FSID comparison pinpointed a stale FSID in a Secret and led to the f

Traditional software engineering deals with deterministic logic that can be specified, reproduced, and verified; modern AI deals with probabilistic generalization induced from data. TCM syndrome diffe

In fast-moving AI projects, dependency security is a fatal risk. This article explains how to use npm, pnpm, uv, and Dependabot/Renovate configuration to build a zero-trust dependency update pipeline

Sharing practical ArgoCD experience in a production-grade multi-tenant Kubernetes platform, covering 7 key points including resource limits, tool selection, repo separation, instance isolation, config

Argo CD local user configuration and permission separation in practice — avoid sharing the admin account, create independent users for different roles with least privilege, and implement secure user a