Add on-premises servers to a primary/secondary server group

Overview

This topic describes how to create a primary/secondary server group and then add on-premises servers to the primary/secondary server group. A primary/secondary server group contains a primary server and a secondary server that can fail over to prevent service interruption. By default, the primary server receives all requests that are distributed by a Server Load Balancer(SLB) instance. When the primary server fails, requests are redirected to the secondary server.

Prerequisites

Applications are deployed on the on-premises servers, and the servers are ready to receive requests.

Procedure

1. On the SLB management console interface, select the target SLB instance, click the instance to enter the instance details, and click the Primary/Secondary Server Groups tab.
   
2. Click Create Primary/Secondary Server Groups.
   
3. On the Create Primary/Secondary Server Group page, configure the primary/secondary server group.
4. In the Primary/Secondary Server Group Name field, enter a name for the primary/secondary server group.
   
5. Click Add IDC Server. In the My Servers panel, select the servers that you want to add on the Select Servers wizard page. You can add only two on-premises servers to a primary/secondary server group.
   
6. In the My Servers panel, click Add.
   
7. Select a virtual private cloud (VPC) from the VPC Connected to IDC drop-down list, enter a name for the on-premises server that you want to add, and then specify the IP address of the server. The on-premises server must can use the specified IP address to communicate with the VPC.
   
8. Click Next.
   
9. Configure the backend port opened on each on-premises serverto receive requests, and then click Add. You can set multiple ports for an on-premises server.
   
10. Click Create.