Scenario
You can add backend servers to a backend server group to process requests from clients.
When you use ELB to route requests, ensure that at least one backend server is running normally and can receive requests routed by the load balancer.
If a backend server is removed, it is disassociated from the load balancer and can still run normally. However, it cannot receive requests from the load balancer. You can add the backend server to the backend server group again when traffic increases or the reliability needs to be enhanced.
Constraints and Limitations
Only servers in the same VPC as the load balancer can be added.
Procedure
- Log in to the management console.
- In the upper left corner of the page, click
and select the desired region and project. - Click
in the upper left corner to display Service List and choose Network > Elastic Load Balancing. - In the navigation pane on the left, choose Elastic Load Balancing > Backend Server Groups.
- On the Backend Server Groups page, click the name of the backend server group.
- Switch to the Backend Servers tab and click Add on the right.
- Search for backend servers using keywords.
- Specify the weights and ports for the backend servers, and click Finish.
Backend server ports can be set in batches.