Automation, containers, CI/CD, cloud platforms, reverse proxies and running web services in production
Nightly WordPress backups from a Docker VPS to Google Drive with rclone: database dump, files archive, retention, Drive upload, a restore test and the pitfalls (tar status 1, trash quota).
Coolify shows “New Traefik minor version available” and an “Attention required” badge on your server. Here is how I update the Traefik proxy safely, verify it, roll back if needed, and clear the stale warning.
A practical Git command reference beyond the basics: log, diff, reset vs revert, remote rename, patch-based workflows with format-patch and am, and the developer/reviewer/admin roles.
A real feature-branch workflow with genuine terminal output: push a branch, fast-forward merge it, then resolve an actual merge conflict step by step.
Clone vs fork explained with a real local demo: adding an upstream remote, fetching a diverged project, and syncing a fork before opening a pull request.
A hands-on Git and GitHub beginner guide with real terminal output: init, commit, branch, diff, merge, .gitignore, SSH keys and your first push.
A step-by-step diagnosis of an intermittent Cloudflare 522 on a Coolify VPS: origin vs edge tests with curl, packet capture, a second network, and the fixes.
Design and monitor API healthchecks with timeouts, dependency honesty, and alerts that wake the right human.
Nginx 502 Bad Gateway means the upstream died or timed out. Walk through proxy_pass, PHP-FPM, sockets, and timeouts the way you actually debug at 2 AM.
Skip hello-world fluff. Build a real Ansible role that hardens SSH baselines, installs packages, and ships configs you can reuse across servers.