Silencing alerts in the UI

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You can easily silence/unsilence alerts attached to your existing SLOs using the Nobl9 UI.

Silence alerts

Follow the steps below to silence an alert in the Nobl9 UI:

1. Go to Service Level Objectives in the main navigation panel.

2. In the SLO grid view, choose the SLO where you want to silence an alert, and click it.

3. In the SLO details view, click Unsilence Alerts:

Image 1: (Un)silencing alerts in the UI

1. In the pop-up window:

   1. Choose the alert policy for which you want to silence your alerts:

   

   Image 2: Choosing Alert policies

   2. Choose the relevant period in the Silence for section:

   

   Image 3: Selecting period for silence Alerts

   3. To apply a custom range for the alert silence period, click Custom Range and select the required dates in the calendar. Then click Click Apply.:

   

   Image 4: Selecting custom range for the alert silence period

   4. Click Silence to apply changes.

You can check the list of your silenced alerts by clicking (Un)Silence Alerts:

Image 5: List of silenced alerts

tip

If there are no alert policies assigned to an SLO and you want to silence/unsilence alerts, you will see the following tooltip once you click (Un)silence Alerts:

Scheduling alert silence

Using custom range, you can schedule an alert silence in the future. To do that, click Custom Range and choose the required dates in the future. After applying changes, your scheduled alert silence appears in the (Un)Silence Alerts pop-up:

Image 6: Scheduled alert silence

You can also see the list of all your silenced alerts in the right-hand details panel in the SLO details main view:

Image 7: List of Silenced Alerts

Unsilence alerts

Follow the steps below to unsilence an alert in the Nobl9 UI:

1. Go to Service Level Objectives in the main navigation panel.

2. In the SLO grid view, choose the SLO where you want to silence an alert and click it.

3. In the SLO details view, click (Un)silence Alerts:

   

   Image 8: Managing silenced Alerts

4. You will see a pop-up with a list of all silenced alerts for the SLO. You can:

   1. Choose alerts that you want to unsilence by clicking Unsilence Now, or
   2. Unsilence all silenced alerts at once by clicking Unsilence All:

   

   Image 9: Unsilencing Alerts

Managing alert silence

You can monitor the statuses of your alert policies by checking the status icon displayed:

• The (Un)Silence Alerts button:

Image 10: Alert Statuses in the (Un)Silence Button

• In the SLO details panel:

Image 11: Alert Statuses in the SLO details panel

The following is the description of the status icons you can see with (Un)Silence Alerts:

Icon	Status	Description	Logic
	Triggered	Nobl9 fired an alert since at least one alert policy was triggered for this SLO.	This status takes precedence over all other statuses. If at least one alert policy is in the triggered state, (Un)Silence Alerts displays this status.
	Resolved	An alert that was triggered for this SLO is resolved now.	This status is displayed for an hour after the time stamp of the alert resolution.
	Not Triggered	This SLO has no triggered alerts, or no alerts have Silence scheduled.	This status appears when no alert policies are triggered / resolved / silenced / have no Silence scheduled.
	Silenced	This SLO has at least one silenced alert policy. You will not receive any alerts for it until the end of the silence period	This status takes precedence over Scheduled Silence.
	Scheduled Silence	This SLO has a Silence scheduled for at least one alert policy.	This status activates when all alert policies are on the scheduled status, or when at least one alert policy has a Silence scheduled, and all others are Not Triggered.

The following is the description of the status icons in the SLO details panel (status icon, event severity, last triggered time):

Icon	Status	Description
	Triggered	Nobl9 fired an alert for this alert policy since it met the conditions of the alert policy.
	Resolved	Alert(s) for this alert policy are resolved now. If alert policy's conditions are met again, Nobl9 will send you alerts for it.
	Not Triggered	There are no triggered alerts for this alert policy.
	Silenced	Alerts are silenced for this alert policy. You will not receive any alerts for it until the end of the Silence period.
	Scheduled Silence	Silence is scheduled for this alert policy. When Silence is active, you will not receive any alerts for it until the end of the Silence period.

Silence alerts and RBAC

Users with Organization Admin and Organization Responder roles or users with Project Owner/Editor or Project Responder roles assigned to a project where SLO belongs can add or remove silence on an alert.

Read more about role-based access control.