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Add schedule_expected_interval_seconds metric

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Add a new Prometheus gauge metric that exposes the expected interval
between consecutive scheduled backups. This enables dynamic alerting
thresholds per schedule backups.

Signed-off-by: Quang Ngo <quang.ngo@canonical.com>
This commit is contained in:
Quang Ngo
2026-03-02 10:20:09 +11:00
parent 8b5559274d
commit 6c3d81a146
3 changed files with 113 additions and 0 deletions
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pkg/controller/schedule_controller.go
+7
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@@ -129,6 +129,13 @@ func (c *scheduleReconciler) Reconcile(ctx context.Context, req ctrl.Request) (c
} else {
schedule.Status.Phase = velerov1.SchedulePhaseEnabled
schedule.Status.ValidationErrors = nil
// Compute expected interval between consecutive scheduled backup runs.
// Only meaningful when the cron expression is valid.
now := c.clock.Now()
nextRun := cronSchedule.Next(now)
nextNextRun := cronSchedule.Next(nextRun)
c.metrics.SetScheduleExpectedIntervalSeconds(schedule.Name, nextNextRun.Sub(nextRun).Seconds())
}
scheduleNeedsPatch := false