Using Health Monitors
Applying a Monitor to a Pool
To apply a monitor to a pool, click Services > Pools. Then click the name of a pool to edit it.
Click Health Monitoring to choose the monitors used by the pool. You can add a new monitor from the drop-down list, clicking Add Monitor when you have finished. To change settings for a monitor attached to your pool, click the Edit In Catalog link against it.
A monitor sending test requests will increase the load on a pool, albeit by a small amount. You should ensure that your back-end servers can handle the traffic produced by the monitors, to avoid a DoS failure.