Queries the CNAME domain name assigned by the system for a Global Traffic Manager (GTM) instance.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes DescribeDnsGtmInstanceSystemCname

The operation that you want to perform. Set the value to DescribeDnsGtmInstanceSystemCname.

InstanceId String Yes instance1

The ID of the instance.

Lang String No en

The language to return some response parameters. Default value: en. Valid values: en, zh, and ja.

Response parameters

Parameter Type Example Description
RequestId String 6856BCF6-11D6-4D7E-AC53-FD579933522B
SystemCname String gtminstance.com

The CNAME domain name assigned by the system.


Sample requests

http(s)://alidns.aliyuncs.com/? Action=DescribeDnsGtmInstanceSystemCname
&<Common request parameters>

Sample success responses

XML format


JSON format

  "RequestId": "6856BCF6-11D6-4D7E-AC53-FD579933522B",
  "SystemCname": "gtminstance.com"

Error codes

For a list of error codes, visit the API Error Center.