Buying a DDM Instance and Connecting to a Schema Using a Windows System

• If you select Pay-per-use, click Submit.
• If you select Yearly/Monthly, click Pay Now.

The value of the password validity period must be an integer ranging from 0 to 65535, in days. If the value is 0, the password never expires. If this parameter is not set, the password will always be valid.

An image is an ECS template that contains an OS and applications. In this example, the Windows OS image is from the Marketplace and provided by third parties.

Figure 5 Basic settings

Figure 6 Selecting an image

To download a MySQL client to the ECS, bind an EIP to the ECS. The ECS must be in the same VPC as the DDM instance for mutual communications.

Figure 7 Network configuration

Figure 8 Selecting an EIP

• If yes, go to Step 5: Connect to a DDM Schema.
• If they are not in the same region, buy another instance. The ECS and DB instance in different regions cannot communicate with each other. To reduce network latency, deploy your DB instance in the region nearest to your workloads.
• If the ECS and DB instance are in different VPCs, change the VPC of the ECS to that of the DB instance. For details, see Changing a VPC.

1. Log in to the ECS. For details, see Login Using VNC in the Elastic Cloud Server User Guide.
2. In the instance list, click the name of the target instance to go to the Basic Information page.
3. In the Network Information area, obtain the private IP address and DDM service port.
4. Open the cmd window on the ECS and check whether the floating IP address and database port of the DDM instance can be connected.

   telnet 192.*.*.* 5066

   • If yes, network connectivity is normal.
   • If no, check the security group rules.
     • If in the security group of the ECS, there is no outbound rule with Destination set to 0.0.0.0/0 and Protocol & Port set to All, add an outbound rule for the floating IP address and port of the DDM instance.
       Figure 11 ECS security group
       
     • If in the security group of the DDM instance, there is no inbound rule allowing the access from the private IP address and port of the ECS, add an inbound rule for the private IP address and port of the ECS.
5. Open a browser, and download and install the MySQL-Front tool on the ECS (version 5.4 is used as an example).

1. Start MySQL-Front.
2. In the displayed dialog box, click New....
   Figure 12 Connection management
   
3. Enter the information of the DDM schema to be connected and click Ok.
   Figure 13 Adding an account
   

   Table 1 Description

   Parameter	Description
   Name	Database connection task name. If you do not set this parameter, it will be the same as Host by default.
   Host	Private IP address of the DDM schema.
   Port	Port of the DDM schema. Set this parameter to 5066.
   User	Username used for accessing the DDM instance. The default user is root.
   Password	Password of the user who will access the DDM instance.

4. In the displayed window, select the connection that you have created in 2.c and click Open. If the connection information is correct, the DDM instance is successfully connected.
   Figure 14 Opening a session