Illia Nikitchenko

Hands-on IT support & infrastructure.

I build things at home, break them, and write down how I fixed them. This site runs on a small VPS that I set up and maintain myself.

Latest case

Caddy in Docker, and the www certificate that wouldn't issue

Moving this site's web server into a container, then debugging why the apex got HTTPS in seconds and www kept failing.

Docker · Caddy · TLS · DNS

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Cases

Real problems from my own setup, written as symptom → hypotheses → diagnosis → cause → fix → lessons.

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Infrastructure

How this site is actually hosted: the VPS, the firewall, the container setup, and why it lives outside my home network.

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Lab

My home machine, kept separate from anything public — where I break things on purpose before they go near a real server.

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Learning

What I'm studying right now and what comes after it.

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