Accessing Huawei Cloud over a Public Network

Figure 1 shows how to use DRS to migrate data from other cloud databases to Huawei Cloud databases over a public network.

Figure 1 Network diagram

If you use DRS to access other cloud databases through a public network, bind an EIP to the cloud database and add the EIP of the DRS instance to the whitelist of the cloud database. After that, the DRS instance can access the cloud database through the EIP. Figure 2 shows the operation process.

Figure 2 Flowchart

Network Configurations

Create a DRS task and obtain the EIP of the DRS instance.

The IP address displayed on the Configure Source and Destination Databases page is the EIP of the DRS instance.
Figure 3 EIP of the DRS instance
Apply for an EIP and bind it to the database on the other cloud.
The configuration method depends on the database type. For details, see the official documents of the corresponding cloud platform.
Configure the IP address whitelist for the database on the other cloud.
Add the EIP of the DRS instance to the whitelist to allow the traffic from the EIP.

The method for configuring the whitelist depends on the cloud database vendor. For details, see the official documents of the corresponding cloud database vendor.
Test the connection.
Log in to the DRS console, locate the created DRS task, and click Edit in the Operation column. On the Configure Source and Destination Databases page, enter the IP address, port, username, and password of the database on the other cloud and then click Test Connection to check whether the connection is successful.