Step 1: Create a DDM Instance and an RDS for MySQL Instance

Region

Region where the DDM instance is located. Select the required region.

Project

Project that the DDM instance belongs to.

Instance Name

Name of the DDM instance, which:

• Cannot be left blank.
• Must start with a letter.
• Must be 4 to 64 characters long.
• Can contain letters, digits, underscores (_), and hyphens (-).

Time Zone

You need to select a time zone for your instance based on the region hosting your instance.

Quantity

Number of nodes in a DDM instance. Up to 32 nodes are supported.

AZ

Availability zone where the DDM instance is deployed.

Nodes in a DDM instance can be deployed on different physical servers in the same AZ to keep services always available even if one physical server becomes faulty.

A DDM instance can be deployed across AZs to provide cross-AZ DR.

If necessary, you can select multiple AZs when you create a DDM instance. Then nodes of the instance will be deployed in multiple different AZs.

Node Class

Class of the DDM instance node. You can select General-enhanced and then specify a node class.

Password

Select Configure or Skip.

Administrator

This parameter is mandatory when Configure is selected for Password. Enter an administrator account name, which cannot be the same as any account on the Accounts page. It cannot be deleted after being created.

Password

This parameter is mandatory when Configure is selected for Password. Set the password of the administrator account.

Confirm Password

This parameter is mandatory when Configure is selected for Password. Enter the password of the administrator account again.

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.

Subnet

A subnet provides dedicated network resources that are logically isolated from other networks for network security. A floating IP address is automatically assigned when you create a DDM instance. After the instance is created, you can change the floating IP address.

Security Group

Select an existing security group.

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

Enterprise Project

EPS provides a unified method to manage cloud resources and personnel by enterprise project.

Parameter Template

Select an existing parameter template. You can also click View Parameter Template to set parameters on the displayed page.

Tags

(Optional) Adding tags helps you better identify and manage your DDM resources.

You can add tags to your DDM instance. Each instance can have a maximum of 20 tags.

• Creating a tag

  You can create tags on the DDM console. A tag key and a value are required when you create a tag.

  Tag key: This parameter is mandatory and cannot be null.

  • Must be unique for each instance.
  • Can include 1 to 36 characters.
  • Cannot be an empty string, or start with _sys_, and cannot start or end with a space.
  • Cannot contain the following characters:

    Non-printable ASCII characters (0-31), "*", "<", ">", "\", ",", "|", "/"

  Tag value: This parameter is mandatory.

  • Is an empty string by default.
  • Can contain 0 to 43 characters.
  • Cannot contain the following characters:

    Non-printable ASCII characters (0-31), "*", "<", ">", "\", ",", "|"

After an instance is created, you can click the instance name to view its tags, modify or delete the tags on the Tags tab page. In addition, you can quickly search for and filter specified instances by tag.

You can add a tag to an instance after the instance is created.