Creating a DDM Instance

Prerequisites

You have logged in to the DDM console.

Procedure

1. On the displayed page, in the upper right corner, click Create DDM Instance.
2. On the displayed page, configure the required parameters.

   Table 1 Parameter description

   Parameter	Description
   AZ	Availability zone where the DDM instance is deployed. Currently, some regions support cross-AZ deployment to enhance availability of DDM instances. When you create a DDM instance, you can select one or more AZs and then the DDM instance will be deployed across different AZs. NOTE: Deploy your application, DDM instance, and required RDS DB instances in the same AZ to reduce network latency. Cross-AZ deployment may increase network latency.
   Instance Name	Name of the DDM instance, which: Cannot be left blank. Must start with a letter. Must be 4 to 64 characters long. Contain only letters, digits, and hyphens (-).
   Instance Class	Class of the DDM instance. You can select general-enhanced (x86) or Kunpeng general computing-plus (Arm). NOTE: Estimate compute and storage requirements of your application and select an appropriate instance class based on your service type and scale so that the DDM instance you will create can better meet your needs. The instance class includes vCPUs and memory.
   Instance Nodes	Number of nodes for deploying the DDM instance. You can apply for up to 32 nodes at a time.
   VPC	VPC that the DDM instance belongs to. This VPC isolates networks for different services. It allows you to manage and configure private networks, simplifying network management. Click View VPC to show more details and security group rules. NOTE: The DDM instance should be in the same VPC as the required MySQL DB instances.
   Security Group	Select an existing security group. The same security group is recommended for your DDM instance, application, and required MySQL DB instances so that network access is not restricted. If different security groups are selected, add security group access rules to enable such network access.
   Parameter Template	A parameter template acts as a container for engine configuration values that can be applied to one or more DDM instances. You can modify parameters in a parameter template to manage configurations of the DDM instance that the template applies to.

3. After the configuration is complete, click Create Now at the bottom of the page.
4. Confirm the configurations and click Submit.