Systems Administrator · L2 Team Lead · RHCSA / RHEL 10 learner
| Role Systems Administrator L2 Team Lead |
Current track RHCSA RHEL 10 / EX200 |
Based in Arlon, Belgium Deloitte Luxembourg |
I am Gabin Longoni, a Systems Administrator and L2 Team Lead at Deloitte Luxembourg. I work where infrastructure, support and operational discipline meet: reducing noise in troubleshooting, making diagnosis repeatable and turning hard-won knowledge into practical runbooks.
observe → understand → automate → document → improve
My current goal is the RHCSA on RHEL 10. I train through a local programme built around deliberate labs, failure analysis and proof after reboot. The objective is not to memorise commands: it is to understand system state and restore it safely.
My practice covers the fundamentals that make a Linux administrator dependable in production:
- shell, files, permissions, users, groups,
sudo, RPM and DNF; - processes,
systemd, journals, scheduling and time synchronisation; - NetworkManager, SSH,
firewalld, storage, LVM, XFS, swap and/etc/fstab; - NFS,
autofs, SELinux, boot recovery and multi-layer troubleshooting.
The measure of progress is simple: make the change, verify the state, reboot when it matters and explain the result clearly.
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L2 troubleshooting, incident analysis, escalation paths and runbooks that help teams operate with less friction. |
Linux fundamentals, service lifecycle, networking, storage, access control, SELinux and recovery under pressure. |
Reproducible exercises, deliberate failure and documentation that another administrator can follow. |
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A native macOS Git workspace that makes the graph, changes, diff and recovery state easier to understand.
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A controller-first Android launcher for retro games, built around a focused console-like experience.
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A Hugo space for technical learnings, projects, reflections, recommendations and reproducible experiments.
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A local-first learning track with deliberate labs, repetition and exam simulations aligned to the EX200 objectives.
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Live indicators from GitHub and Shields · my contribution graph is available directly on the profile overview.
- Prefer observable, reversible automation over cleverness.
- Make safety boundaries explicit, especially around system and Git operations.
- Document decisions while building the solution.
- Leave every system and repository easier to understand.
If you are working on Linux operations, support tooling or practical automation, connect with me on LinkedIn.