torjus/nixos-exporter
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat: add nixos_flake_info metric with current and remote revisions

Browse Source 
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>
This commit is contained in:
Torjus Håkestad
2026-02-07 00:16:19 +01:00
parent e381038537
commit 9c29505814
5 changed files with 32 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
README.md
View File

@@ -80,6 +80,7 @@ services.prometheus.exporters.nixos = {
|--------|------|--------|-------------|
| `nixos_flake_input_age_seconds` | Gauge | `input` | Age of flake input in seconds |
| `nixos_flake_input_info` | Gauge | `input`, `rev`, `type` | Info gauge with revision and type labels |
| `nixos_flake_info` | Gauge | `current_rev`, `remote_rev` | Info gauge with current and remote flake revisions |
| `nixos_flake_revision_behind` | Gauge | | 1 if current system revision differs from remote latest |
## Example Prometheus Alerts
@@ -129,7 +130,7 @@ groups:
## Known Limitations
- The `nixos_flake_revision_behind` metric relies on parsing the git hash from `/run/current-system/nixos-version`. The format of this file varies depending on NixOS configuration:
- The `nixos_flake_info` and `nixos_flake_revision_behind` metrics rely on parsing the git hash from `/run/current-system/nixos-version`. The format of this file varies depending on NixOS configuration:
- Standard format: `25.11.20260203.e576e3c`
- Custom format: `1994-294a625`