Removing Backend Servers

Scenario

You can remove a backend server that is no longer needed from a backend server group.

Once a backend server is removed, it is disassociated from the load balancer and will no longer receive requests from the load balancer. The backend server still exists. You can add the backend server to the backend server group again when traffic increases or the reliability needs to be enhanced.

Notes

After the backend server is removed, requests are still routed to it. This is because a persistent connection is established between the load balancer and the backend server and requests are routed to this server until the TCP connection times out.

If no data is transmitted over this TCP connection after it times out, ELB disconnects the connection.

Procedure

1. Log in to the management console.
2. In the upper left corner of the page, click and select the desired region and project.
3. Hover on in the upper left corner to display Service List and choose Network > Elastic Load Balance.
4. In the navigation pane on the left, choose Elastic Load Balance > Backend Server Groups.
5. On the Backend Server Groups page, click the name of the backend server group.
6. Switch to the Backend Servers tab page and click Backend Servers.
7. Select the backend servers you want to remove and click Remove above the backend server list.
8. In the displayed dialog box, click Yes.