Manage anti-flooding policies
Anti-flooding policies limit the number of alerts to distribute in the event that the alert is triggered frequently over a short period of time. This is done to avoid inundating recipients with repeated notifications when an alert condition persists.
The default anti-flooding policy dictates that a single alert may be distributed to any recipient up to five times over the course of one hour and, if it persists, a reminder is sent after another hour passes. You can use this rule, called default AF, edit it, or you can create additional policies as needed.
Apart from explicit anti-flooding policies, Devo possesses an intrinsic anti-flooding system that offers an additional layer of protection against alert flooding. Alerts will be discarded after receiving 100 of them in every 5 minute-period. This system is always active but becomes especially useful when no anti-flooding policy is selected because setting one will create a more restrictive environment that will make it impossible to reach the conditions to activate this system.
Anti-flooding policies are managed in the Administration → Alert configuration area, in the Alert Policies top tab, inside the Anti-flooding Policy left tab.
Create an anti-flooding policy
Click the New button at the top right and the Anti-flooding Policy window appears. Enter the required settings and click Save. Once created, the anti-flooding policy is available to use when configuring sending policies (visit Manage sending policies to know more).
Policy name | Unique name that identifies the policy. Enter one that allows you to easily identify the rule it contains. | |
---|---|---|
Send a maximum of (...) Alerts | Maximum number of alerts that will be sent. If more alerts are triggered, they will not be sent, however, the Alerts Dashboard will always keep a record of every time the alert is triggered. You can also query the complete history of alerts triggered in the | |
Over a period of | Establish the periodicity used to keep track of the alert counter in order to limit the alert distribution. | |
Amount of time | Write the desired number or use the arrows to add or subtract one by one. | |
Time unit | Select one from the drop-down (minutes, hours, days). If you select minutes, the minimum amount of time you can set is 5 minutes. |
5 alerts per minute
To keep anti-flooding policies restrictive enough to serve their purpose, the highest threshold you can establish to start discarding alerts is 5 alerts per minute.
Edit an anti-flooding policy
Find the desired anti-flooding policy and click the ellipsis icon that appears at the end of the row. Select Edit, make the necessary changes in the Anti-flooding policy window, and click Update.
Delete an anti-flooding policy
Find the desired anti-flooding policy and click the ellipsis icon that appears at the end of the row. Select Delete and confirm the warning message that appears.
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