deep-dive
Handling a Password You Never See
One database password, two readers, never on screen. A stray newline, a version I couldn't destroy, and checking two copies without looking.
deep-dive
Exhaustive, technical explorations into how specific technologies work under the hood.
deep-dive
The Cost of Saying "I'm Still Here"
Control-plane eMMCs take 13–15 GB a day. Most of it is etcd recording twenty leases saying they're still alive, at about 22 KB a time.
deep-dive
Wear Without Writes
One NVMe's reported wear sped up 4.5× the evening its writes almost stopped. Its spare blocks and error counters say the flash never noticed.
deep-dive
The Disk With No S.M.A.R.T.
Six months of drive monitoring pointed at the wrong device. The one doing three times the writes has no S.M.A.R.T. at all.
deep-dive
The Wear That Wasn't
An NVMe alert at 82% used life, on drives with full spare capacity and zero errors. The wear number turned out to be a clock, not an odometer.
deep-dive
The Alert That Named a Pod
A Prometheus alert named a pod IP, not a machine. The 'broken' label turned out to have logged every cluster-wide reboot for three months.
homelab-journey
CloudNativePG Part 1: Planning Highly Available PostgreSQL Across Two TuringPi Boards
Same partition, opposite outcome, depending only on which board the primary happens to be on.
Longhorn
Longhorn Deep Dive: Replicas, Versions, and Upgrades
The decisions behind the Longhorn installation: why 2 replicas on a 1Gb cluster, how version pinning protects reproducibility, and when to upgrade.