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Fumoctl
Fumoctl

About

Hi, I’m Juan - Fumoctl.

I’m an Argentinian systems administrator and Business Informatics student with a passion for free and open-source software, rock-solid systems architecture, and digital sovereignty.

This is where I write about the intersection of modern infrastructure engineering, declarative operating systems, and practical homelabbing. If you care about building infrastructure that is deterministic, auditable, and resilient to breaking updates, you’ll feel right at home here.

What I Work On & Write About
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  • Declarative & Immutable Linux: Deep dives into managing systems where configuration is code—primarily focusing on Nix / NixOS, flakes, container layering, and modern atomic deployments.
  • Homelab Architecture & Self-Hosting: Designing reliable, reproducible services using rootless containers, reverse proxies, and automated deployment pipelines.
  • Systems Administration & Automation: Orchestration and config management with Ansible, systemd units, Quadlets, and custom automation scripts in Python, Go, and Bash.
  • Privacy & Security Sovereignty: Practical guides to data autonomy, encrypted backups, PGP verification, and hardening cloud/VPS instances.

Subscribe via RSS
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Stay up to date with new articles and infrastructure deep dives without algorithms or tracking:

Subscribe via RSS

Get new articles delivered directly to your feed reader, without algorithms, ads, or tracking.

https://fumoctl.com/index.xml
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PGP & Cryptographic Identity
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For encrypted communications, verifying git commits, or checking signed documents:

PGP Key (JuanU)

Identity: JuanU (Fumoctl's personal pgp key) <juanu@fumoctl.com>

Key Fingerprint:
5F3C 25D7 55D3 A432 1D03 FF71 35FA C098 F119 E8FA
Fetch automatically via Web Key Directory (WKD):
gpg --locate-keys juanu@fumoctl.com
Download fumopgp.pub WKD Binary Key

Connect & Socials
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