You can query CDH instance information through the console or an API.

Viewing CDH instance information via the console

1. Log in to the Dedicated Hosts console.
2. At the top of the Dedicated Host page, select a desired region. Then you can view information about all CDH instances in the selected region, including the availability zone, model, total and available resources, and expiry time, as shown below:
   
3. Click the ID of a CDH instance. On the details page displayed, you can view the information of the CDH instance and its CVM list.
   

Querying CDH instance information via an API

Use the DescribeHosts API to query the details of CDH instances.