Add backend servers by specifying their ENIs

Overview

An elastic network interface (ENI) is a virtual network interface that can be attached to an Elastic Compute Service (ECS) instance in a virtual private cloud (VPC). ENIs can improve the availability of clusters and offer cost savings in service fail overs and fine-grained network management. You can add a backend server to an SLB instance by specifying the primary or secondary IP address of the ENI used by the backend server.

Procedure

1. On the SLB management console interface, select the target SLB instance, click the instance to enter the instance details, and click the vServer Groups, Default Server Group, or Primary/Secondary Server Groups tab.
   
2. Click vServer Groups.
   
3. Click Add.
   
4. In the Select Servers step, select ECS Instance Name from the drop-down list and turn on Advanced Mode.
   
5. Select the backend servers that you want to add to the vServer group and click Next.
   
6. In the Configure Port s and Weights step, specify the ports and weights of the backend servers and click Add.
   
7. After you add backend servers to the server group of the listener, you can view the server group that contains the primary and secondary ENIs on the Instances page.