Practical articles on AI, DevOps, Cloud, Linux, and infrastructure engineering.
Most GitHub Actions pain comes from the same handful of jobs done wrong. This is the map: the recipes that make pipelines fast, secure, and cheap.
Stop stashing long-lived AWS access keys in GitHub secrets and let OIDC hand your workflows short-lived, scoped credentials instead.
Run only the CI jobs a change actually affects using if conditionals, trigger path filters, and per-job path detection in a monorepo.
A practical guide to building, tagging, caching, and pushing Docker images from GitHub Actions using buildx, GHCR, and multi-arch builds.
A practical guide to matrix builds in GitHub Actions that tests across versions and platforms without burning your monthly minutes.
Stop re-downloading the same packages on every CI run by caching dependencies with keys that actually hit.
A practical guide to scoping GitHub Actions secrets correctly, avoiding leaks in logs, blocking fork-PR theft, and preferring OIDC over stored keys.
Most breaches come from the same short list of application bugs. This is the map: the vulnerabilities that actually get exploited and how to shut each one down.
A practical look at how SCA scanning finds vulnerable dependencies, cuts CVE noise, and where SAST, DAST, and IAST fit into CI/CD.
A likelihood-ordered checklist for tracing "Permission denied" on Linux through mode bits, ownership, ACLs, SELinux, and mount options.
A field-tested workflow for diagnosing why a systemd unit refuses to start, from status output to exit codes to the usual root causes.
When a Linux box misbehaves, the same dozen problems come up again and again. This is the map: what each symptom means and the fast path to the fix.
