feat: add Prometheus metrics for license warnings and errors (#21749)

Fixes: coder/internal#767

Adds two new Prometheus metrics for license health monitoring:

- `coderd_license_warnings` - count of active license warnings
- `coderd_license_errors` - count of active license errors

Metrics endpoint after startup of a deployment with license enabled:

```
...
# HELP coderd_license_errors The number of active license errors.
# TYPE coderd_license_errors gauge
coderd_license_errors 0
...
# HELP coderd_license_warnings The number of active license warnings.
# TYPE coderd_license_warnings gauge
coderd_license_warnings 0
...
```
This commit is contained in:
Marcin Tojek
2026-01-29 13:50:15 +01:00
committed by GitHub
parent 06e396188f
commit 04b0253e8a
6 changed files with 162 additions and 8 deletions
+2
View File
@@ -147,8 +147,10 @@ deployment. They will always be available from the agent.
| `coderd_insights_parameters` | gauge | The parameter usage per template. | `parameter_name` `parameter_type` `parameter_value` `template_name` |
| `coderd_insights_templates_active_users` | gauge | The number of active users of the template. | `template_name` |
| `coderd_license_active_users` | gauge | The number of active users. | |
| `coderd_license_errors` | gauge | The number of active license errors. | |
| `coderd_license_limit_users` | gauge | The user seats limit based on the active Coder license. | |
| `coderd_license_user_limit_enabled` | gauge | Returns 1 if the current license enforces the user limit. | |
| `coderd_license_warnings` | gauge | The number of active license warnings. | |
| `coderd_metrics_collector_agents_execution_seconds` | histogram | Histogram for duration of agents metrics collection in seconds. | |
| `coderd_oauth2_external_requests_rate_limit` | gauge | The total number of allowed requests per interval. | `name` `resource` |
| `coderd_oauth2_external_requests_rate_limit_next_reset_unix` | gauge | Unix timestamp of the next interval | `name` `resource` |