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Application Load Balancer (ALB)
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- Documentation
Load BalancerApplication Load Balancer (ALB)API ReferenceAvailability ZoneDescribeZones - Querying the ALB supported AZ List
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Download PDFAvailability Zone
DescribeZones - Querying the ALB supported AZ List
Copy pageDownload PDFDescribeZones - Querying the ALB supported AZ List
Call the DescribeZones API to query the Availability Zones supported by ALB.
Instructions
Submit up to 40 API requests per second.
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.
Request parameters
The following only details request parameters specific to this API and key common parameters. More information can be found in Common parameters.
Action string required Example: DescribeZones
Action to execute. Set the value to DescribeZones.
Version string required Example: 2020-04-01
The API version. Value: 2020-04-01.
Response parameters
Only the response parameters specific to this API are listed below. More information, see Response structure.
RequestId string Example: 20210811152539010225146063030****
Request ID.
Zones object[] Example: --
List of availability zones where ALB can be deployed in the current region.
ZoneType string Example: standard
Availability zone type.
ZoneId string Example: cn-beijing-a
Availability zone.
Request examples
GET /?Action=DescribeZones&Version=2020-04-01 HTTP/1.1
Host: alb.cn-beijing.volcengineapi.com
X-Date: 20251121T094038Z
Authorization: HMAC-SHA256 Credential=Adfks******wekfwe/20251121/cn-beijing/alb/request, SignedHeaders=host;x-date, Signature=47a7d934ff7b37c03938******cd7b8278a40a1057690c401e92246a0e41085f
Response examples
{
"ResponseMetadata": {
"RequestId": "754222ed-****-****-****-bf1beba4880b",
"Action": "DescribeZones",
"Version": "2020-04-01"
},
"Result": {
"RequestId": "754222ed-****-****-****-bf1beba4880b",
"Zones": [
{
"ZoneId": "cn-beijing-a"
}
]
}
}
Error codes
The following table lists the error codes related to the business logic for this API. For details, see Common error codes.
Status code | Error codes | Error message | Notes |
400 | Invalid%s.Malformed | MismatchThe specified %s is malformed. | The specified %s parameter format is invalid. |
400 | MissingParameter | The request is missing a required parameter. Ensure that you have supplied all the required parameters for the request; for example, '%s'. | This request is missing a required parameter. Please ensure the request includes all required parameters, such as: %s. |
400 | InvalidParameter | Data unmarshal failed. | Failed to parse the request. |
500 | InternalError | An internal error has occurred. | An internal error occurred. Please try again later or contact an engineer for further consultation. |
Last updated: 2026.06.12 14:05:05
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