If you'd like to redirect traffic to a URL if all nodes are down. Please follow the steps below.
- Navigate to your group or backend management and click on "Servers"
- Now click on "Add Server"
- Server Name: xxx
IP Address: 127.0.0.1
- Set server Type to "Backup"
- Add your HTTP Redirect URL in the text field next to HTTP Redirect
Now when all nodes in your Group/Backend Management goes down, all traffic will be redirected to your specified URL.