Precautions for Buying a DDM Instance

After registering a Huawei ID, use IAM to create an IAM user and a user group, and grant specific permissions to the IAM user so that you can perform refined management on your resources.

Selecting an Instance Class

Estimate compute and storage requirements of your application and then select an appropriate instance class based on these requirements and your service type and scale so that the DDM instance you will buy can better meet your application requirements. The instance class includes vCPUs and memory.

Determining a VPC

A VPC provides logical isolation for network access. When creating a VPC, you can define its network features, such as the security group, VPN, and subnet. Using a VPC, you can easily manage and configure the intranet, and modify networks quickly and securely.

The DDM instance you purchase must be in the same VPC as your application and RDS MySQL instance to ensure network connectivity.

You are advised to select the same security group for your DDM instance, application, and RDS MySQL instance so that they can communicate with each other. If different security groups are selected, add security group access rules to enable such network access.