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Elastic Compute Service

Manage Dedicated Host Cluster

Creating instances in host cluster

Creating instances in host cluster

This topic describes how to create Pay-as-you-go instances in a DDH cluster.

Procedure

Log in to the DDH console.

In the top menu bar, select the region where your business is located.

On the "Host cluster" tab, click the "Create instance" button in the "Actions" column of the target cluster.

Configure the parameters in the following table.

Parameter	Description	Sample value
Host cluster	By default, the current host cluster is selected. You can also click the drop-down list to select another cluster.	-
DDH	Specify the target host. After selecting the host cluster, you can also select "Automatic deployment". This eliminates the need to specify a host and the instance is directly created on a DDH that supports automatic deployment.	Automatic deployment
Associate host	For ECS instances in Economical Mode, some resources will be released after the instances are stopped. This parameter specifies whether the ECS instance will remain fixed on the target host when the ECS instance restarts. If you associate an instance in Economical Mode with a host, when the instance restarts, it will still be deployed on the target host. If the available resources on the current host are insufficient, the restart will fail. If you do not associate an instance in Economical Mode with a DDH, when the instance restarts, it will be preferentially migrated to a host that supports automatic deployment. If resources on the host that supports automatic deployment are insufficient, the instance restarts on the target host.	Associate host
Billing method	This parameter is fixed as "Pay-as-you-go".	Pay-as-you-go
Instance type	The custom vCPU and memory configuration for the instance type. For details on the types of instances that can be created on a DDH, refer to Instance types.	32 vCPUs, 128 GiB

Configure the parameters in the "Network and security" and "Advanced configuration" steps by referring to Creating instances on DDH and complete the purchase.

Related documents

RunInstances - Creates instances

Last updated: 2026.01.16 19:04:01