Summary

This document records the rediscovery, forensic analysis, and containment of an operational NixOS instance on an ARM64 Hetzner VM, previously deployed by Operative ir.lvn approximately one year prior and subsequently forgotten.

The machine in question—codename hetz-arm—was discovered while evaluating cloud deployment procedures. Its continued operation despite complete cognitive dereferencing by its creator indicates a highly successful, if disturbingly undocumented, provisioning cycle.

Chronology of Events

• T - 1 Year: Operative ir.lvn deploys a Debian ARM64 instance on Hetzner Cloud.

• T + 1h: Using nixos-anywhere, the machine is re-imaged to NixOS 23.11 with a flake-based configuration.

• T + 2h: A post-deployment adjustment is made using nixos-rebuild –target-host.

• T + 1 Year: The operative stumbles upon the instance while evaluating cloud providers, recalls its hostname but not its origin.

• T + 1 Year + 6h: System identified as a self-provisioned ARM64 NixOS host; forensics confirm origin, tools, and probable state of mind at time of deployment (“caffeine fugue”).

Technical Characteristics

• Platform: Hetzner Cloud ARM64 (Neoverse-N1, virtualized via QEMU)

• Boot Method: Replaced Debian base using nixos-anywhere –build-on-remote

• NixOS Version: 23.11 (coherent with estimated deployment window)

• Configuration: Flake-based system with local copy preserved on the operative’s home system

• Persistence: Host is stable, quiet, operational. There is no record of downtime or incident reports.

Risks and Recommendations

The incident exposes a known class of high-risk operative behavior, colloquially known as Nixnesia: the forgetting of deployed systems due to overly effective declarative configuration.

Recommendations:

• Tag all future deployments with metadata including:

  • Deployment date

  • Deployment method

  • Flake/Git origin

  • Host purpose and decommission schedule

• Log all nixos-anywhere uses to local sysadmin timeline or project notebook.

• Consider adoption of a lightweight deployment tracker or tagging system.

Conclusion

The operative has successfully reclaimed ownership of the ghost infrastructure. The recovered machine is now eligible for reintegration, upgrade to NixOS 24.05, or ritual decommissioning per Site policy.

A reminder: Declarative infrastructure is powerful. Forgetting your own summoning circle is... inadvisable.

–Filed by: Operative ir.lvn, Laundry Internal Systems Section,
with assistance from Memetic Recovery Protocol GPT-4.