Network Configurations for Primary and Standby Instances in the Same Region

Procedure

1. Create two different VPCs in the same region.
   1. Log in to the VPC console.
   2. Click Create VPC.
      Figure 1 Creating a VPC
      
   3. On the Basic Information page, configure required parameters.
      Figure 2 Configuring VPC parameters
      

      Table 1 VPC 1 configurations

      Parameter	Description	Example Value
      Region	Region where the VPC is created. For lower network latency and faster access to your resources, select the region nearest you.	-
      Name	VPC name	vpc-10-0-master
      IPv4 CIDR Block	CIDR block of the VPC. The CIDR block of any subnet in the VPC must be within the VPC CIDR block.	10.0.0.0/24
      IPv4 CIDR Block	CIDR block for the subnet. The block must be within the VPC CIDR block.	10.0.0.0/24

      

      Retain default values for the parameters not listed in the above table.

   4. Create another VPC by referring to 1.c.
      Figure 3 Configuring VPC information
      

      Table 2 VPC 2 configurations

      Parameter	Description	Example Value
      Region	Select the same region as VPC 1.	-
      Name	VPC name	vpc-10-1-slave
      IPv4 CIDR Block	Select a CIDR block different from VPC 1 CIDR block.	10.1.0.0/24
      IPv4 CIDR Block	CIDR block for the subnet. The block must be within the VPC CIDR block.	10.1.0.0/24

2. Create a VPC peering connection.
   1. Log in to the VPC console.
   2. In the navigation pane on the right, choose VPC Peering Connections > Create VPC Peering Connection.
      Figure 4 Creating a VPC peering connection
      
   3. Select My account for Account and configure other required parameters.

      Table 3 VPC peering connection configurations

      Parameter	Description	Example Value
      Name	Name of the VPC peering connection	peering-1264
      Local VPC	Select a VPC from the drop-down list.	vpc-10-0-master
      Local VPC CIDR Block	CIDR block of the local VPC	10.0.0.0/24
      Account	Account that the VPC to be peered with is from. The value can be: My account: The VPC is from your account. Another account: The VPC is from another account.	My account
      Peer Project	Peer project name. The name of the current project is used by default.	cn-east-3
      Peer VPC	The other VPC that you want to connect. Select a VPC from the drop-down list if you want to connect your VPC with another VPC of your own.	vpc-10-1-slave
      Peer VPC CIDR Block	The CIDR block for the peer VPC	10.1.0.0/24

   4. Click OK.
   5. View the created VPC peering connection.
      Figure 5 Viewing the VPC peering connection
      

3. Add a route for the peering connection.
   1. Add a local route.

      In the peering connection list, locate the VPC peering connection that you want to configure routes for and click the connection name. The page showing the VPC peering connection details is displayed.

      Click the Local Routes tab and then click the Route Tables hyperlink. The Summary tab of the default route table for the local VPC is displayed.

      Figure 6 Local routes
      

      Click Add Route to add a route to the route table.

      Figure 7 Adding a route
      

      In the displayed dialog box, configure required parameters.

      Figure 8 Configuring route parameters
      

      Table 4 Route configurations

      Parameter	Description	Example Value
      Destination	CIDR block of the peer VPC	10.1.0.0/24
      Next Hop Type	Type of the next hop	VPC peering connection
      Next Hop	Select the created VPC peering connection.	peering-1264
      Description	(Optional) Provides supplementary information about the route.	-

      Click OK. You can then view the added route on the Local Routes page.

      Figure 9 Viewing local routes
      
   2. Add a peer route.

      Click the Peer Routes tab and then click the Route Tables hyperlink. The Summary tab of the default route table for the peer VPC is displayed.

      Figure 10 Peer routes
      

      Click Add Route to add a route to the route table.

      Figure 11 Adding a route
      

      In the displayed dialog box, configure required parameters.

      Figure 12 Configuring route parameters
      

      Table 5 Route configurations

      Parameter	Description	Example Value
      Destination	CIDR block of the local VPC	10.0.0.0/24
      Next Hop Type	Type of the next hop	VPC peering connection
      Next Hop	Select the created VPC peering connection.	peering-1264
      Description	(Optional) Provides supplementary information about the route.	-

      Click OK. You can then view the added route on the Peer Routes page.

      Figure 13 Viewing peer routes
      

   The two VPCs can communicate with each other now. Then you can create two GeminiDB Redis instances in these two VPCs by referring to Buying an Instance.