torjus/nixos-exporter
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3 Commits

Author SHA1 Message Date
Torjus Håkestad
04eba77ac0 fix: use nixos-version --json for configuration revision 
- Use `nixos-version --json` command instead of reading files directly
- Add nixpkgs_rev and nixos_version labels to nixos_flake_info metric
- Show "unknown" for current_rev when system.configurationRevision not set
- Document configurationRevision setup in README

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-02-07 00:55:23 +01:00
Torjus Håkestad
9c29505814 feat: add nixos_flake_info metric with current and remote revisions 
Add a new info metric that exposes the current system's flake revision
and the latest remote revision as labels. This makes it easier to see
exactly which revision is deployed vs available.

Also adds version constant to Go code and extracts it in flake.nix,
providing a single source of truth for the version.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-02-07 00:16:19 +01:00
Torjus Håkestad
f637da487c feat: implement nixos-exporter 
Prometheus exporter for NixOS-specific metrics including:
- Generation collector: count, current, booted, age, config mismatch
- Flake collector: input age, input info, revision behind

Includes NixOS module, flake packaging, and documentation.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-02-06 22:52:28 +01:00