A flaky CI failure where a freshly-created DNS record was unresolvable from inside the cluster, but resolved fine from my laptop a few minutes later. The culprit was negative DNS caching, driven by the zone’s SOA, poisoning lookups for our ephemeral per-job records.
How I extracted a reusable Home Manager module that materializes Nix store symlinks as real files — so host-side programs on Fedora Silverblue can actually read them.
How to detect OpenShift cluster upgrades, extend the detection window to cover the recovery period, and use Alertmanager inhibit rules to suppress noisy alerts during upgrades.
Tracing stuck Testing Farm jobs from process list through Python stack traces to a catastrophic regex backtracking bug in tmt — caused by a 1M-character line in test output.
How I debugged and fixed missing emoji rendering in Google Chrome on a BlueBuild/Fedora Atomic Desktops system — and why fontconfig wasn’t the answer.
First post on the blog – who I am, why I started writing, and what to expect.