You can call the DescribeAvailableCrossRegion operation to query the available destination regions to which the cross-region backup files from a specified source region can be replicated.
Operation Description
Before you call this operation, make sure that the instance runs one of the following database engines:
- MySQL. For more information, see Back up an ApsaraDB RDS for MySQL instance across regions.
- SQL Server. For more information, see Back up an ApsaraDB RDS for SQL Server instance across regions.
- PostgreSQL. For more information, see Back up an ApsaraDB RDS for PostgreSQL instance across regions.
Authorization information
The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:
- Operation: the value that you can use in the Action element to specify the operation on a resource.
- Access level: the access level of each operation. The levels are read, write, and list.
- Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level,
All Resourcesis used in the Resource type column of the operation.
- Condition Key: the condition key that is defined by the cloud service.
- Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
| Operation | Access level | Resource type | Condition key | Associated operation |
|---|---|---|---|---|
| rds:DescribeAvailableCrossRegion | READ |
|
| none |
Request parameters
| Parameter | Type | Required | Description | Example |
|---|---|---|---|---|
| RegionId | string | Yes | The ID of the region. You can call the DescribeRegions operation to query the most recent region list. | cn-hangzhou |
Response parameters
Examples
Sample success responses
JSONformat
{
"RequestId": "39265F46-EC77-4036-8AC4-F035F32F6BE2",
"Regions": {
"Region": [
"\"cn-qingdao\",\"cn-shanghai\", \"cn-shenzhen\""
]
}
}Error codes
| HTTP status code | Error code | Error message | Description |
|---|---|---|---|
| 400 | InvalidRegion.Format | Specified Region is not valid. | The region ID is invalid. Check the region ID. |
| 403 | CrossBackupNotSupport | Specified region not support cross region backup. | Cross-zone backup is not supported in the specified region. |
| 404 | InvalidPage.notFound | Page not found. | The specified parameters are not found. Check your parameters. |
For a list of error codes, visit the Service error codes.
Change history
| Change time | Summary of changes | Operation | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2022-09-01 | The error codes of the API operation change. | |||||||||
|