Elastic Compute Service:Create ECS instances with a private pool

Use the ECS console

This section covers only private pool-related parameters. For other parameters, see Create an instance with Custom Launch.

1. Go to the ECS instance buy page by using one of the following methods:

   • On the Instance page, click Create Instance.

     

   • On the Resource Reservations page, find a resource reservation that is in the Active state and click Buy Instance in the Actions column.

     

2. Configure the basic settings.

   The following table describes the private pool-related basic settings.

   Parameter	Description
   Billing Method	To use a private pool associated with an elasticity assurance, an immediate capacity reservation, or a capacity reservation with Savings Plan, select Pay-as-you-go. To use a private pool associated with a capacity reservation for subscription resources, select Subscription.
   Region	Select the same region as the resource reservation.
   Network and Zone	Select the same network and zone as the resource reservation.
   Instance	Select the same instance type as the resource reservation.
   Images	For an immediate capacity reservation, select the same Linux or Windows operating system as the reservation.

3. Configure Block Storage, Bandwidths & Security Groups, and Management Settings. Then, click Advanced Settings(Optional).

4. In Advanced Settings(Optional), configure the parameters. In Private Pool Type, specify whether and how to use a private pool.

   • Specify a private pool ID: Select Targeted from Private Pool Type and enter the private pool ID. The private pool ID is the same as the resource reservation ID. If the specified pool has no available capacity, instance creation fails.

     Note

     You can specify the ID of an open or targeted private pool.

   • Use a system-assigned open private pool. Select Open from Private Pool Type. The system automatically selects a matching open private pool. If the pool has no available capacity, public pool resources are used.

     Note

     The system selects only open private pools.

   • Do not use private pool capacity. Select Do Not Use from Private Pool Type. The public pool is used.

5. Review your configurations, agree to the terms of service, and complete the payment.

Call an API operation

Call the RunInstances operation and set the PrivatePoolOptions.MatchCriteria parameter to specify the private pool type.

• Open: The system selects a matching open private pool. If no match is found, public pool resources are used. You can leave PrivatePoolOptions.Id empty.

• Target: The system uses capacity from a specified private pool. If the pool is unavailable, instance creation fails. You must specify PrivatePoolOptions.Id.

• None: Private pool capacity is not used. The public pool is used.