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RDS for PostgreSQL

Global

DescribeAvailabilityZones

Call the DescribeAvailabilityZones API to query the list of availability zones (AZs).

Request type

Synchronous request.

Precautions

The DescribeAvailabilityZones API routes requests based on the Region parameter in the Header. It only queries availability zone information for the region specified in the header and will not return information for other regions.

Call the DescribeRegions API to query region information.

Debug

API Explorer

You can initiate calls online through API Explorer without paying attention to the signature generation process and quickly obtain the call results.

Go to debug

Request parameters

None.

Response parameters

Parameter	Type	Example	Description
RegionId	String	cn-beijing	Region ID.
Zones	Array of ZoneObject	Refer to the Sample response.	Availability zone list.

ZoneObject

Parameter	Type	Example	Description
ZoneId	String	cn-beijing-a	Availability zone ID.
ZoneName	String	cn-beijing-a	Availability zone name.
Description	String	China (Beijing) - Availability zone A	Name of the availability zone of the region.

Example

Sample request

POST /?Action=DescribeAvailabilityZones&Version=2022-01-01 HTTP/1.1​
Content-Type: application/json​
Host: rds-postgresql.cn-beijing.volcengineapi.com​
X-Date: 20231002T101010Z​
Authorization: HMAC-SHA256 Credential=AKLTN2I0MmFiNzMxNWE5NDgzMzk4MmVjMTVkODlkZTZ****/20211202/cn-beijing/rds_postgresql/request,SignedHeaders=x-date, Signature=71d31fc7bcf990142851c9833c5656391486cda0ae2e0b8ada733b7c6458****​
{​
    "RegionID": "cn-beijing"​
}​

Sample response

{​
    "ResponseMetadata": {​
        "RequestId": "20230801145904E960E37BE9C8BF1DD50F",​
        "Action": "DescribeAvailabilityZones",​
        "Version": "2022-01-01",​
        "Service": "rds_postgresql",​
        "Region": "cn-beijing"​
    },​
    "Result": {​
        "RegionId": "cn-beijing",​
        "Zones": [​
            {​
                "Description": "华北2（北京）-可用区A",​
                "ZoneId": "cn-beijing-a",​
                "ZoneName": "cn-beijing-a"​
            },​
            {​
                "Description": "华北2（北京）-可用区B",​
                "ZoneId": "cn-beijing-b",​
                "ZoneName": "cn-beijing-b"​
            }​
        ]​
    }​
}​

Last updated: 2026.03.31 10:45:18