Time intervals

Time intervals allow you to control exactly when alert notifications are delivered during designated periods. These intervals are assigned to a specific Alertmanager and only affect the alerts managed by that instance. Importantly, while a time interval suppresses the actual notification, it does not interrupt the underlying alert evaluation process.

A time interval is a recurring interval used to pause notifications for one or more notification policies during a specific period. This is ideal for managing notifications during:

• Regular maintenance windows where alerts are expected.

• Scheduled "off-hours" such as evenings or weekends.

Once you have defined a time interval, you can apply it to your notification policies to ensure your team is only notified at the appropriate times.

Add a time interval

1. Navigate to Alerting > Notification policies and select Time intervals.
2. Click the + Add time interval button.
3. Enter a unique name for the interval (such as, weekend-maintenance or off-hours).

4. Use the Time intervals section to specify when the mute should be active:

   • Define the start and end times (such as, 22:00 to 06:00).
   • Select specific days (such as, Saturday, Sunday).
   • Specify numerical dates (such as, 1, 15) or use "last" for the end of the month.
   • Choose specific months if the maintenance is seasonal (such as, January, July).
   • Optionally limit the interval to a specific year range.

5. Click + Add another time interval to create additional rules within the same mute timing for complex schedules.

6. Click Submit to save the time interval.

Applying the timing interval

After saving, your time interval will not work until it is linked to a policy.

1. Go to Notification policies.
2. Find the policy you want to mute (Default or a specific child policy) and click More > Edit.
3. Scroll to Mute timings and select your newly created timing from the dropdown.
4. Click Save policy.

Learn more

Mute timings & active intervals