Manually add instances to a scaling group

This topic describes how to manually add instances to a scaling group. You can add existing instancesto a scaling group to utilize computing resources.

Prerequisites

The instances that you want to add to a scaling group must meet the following requirements:

• The instances that you want to add and the scaling group to which you want to add the instances are in the same region, organization, and resource set.
• The instances are in the Running state.
• The instances do not belong to other scaling groups.
• The instances and the scaling group are in the same virtual private cloud (VPC).
• The scaling group to which you want to add instances must meet the following requirements:
  • The scaling group is in the Enable state.
  • The scaling group has no scaling activities in progress.

Context

• You can manually add instances to a scaling group even before the cooldown time expires.
• If the number of instances in the scaling group is greater than the maximum number of instances after you manually add instances to the scaling group, you cannot add the instances.
• The instance types of the instances that you want to manually add to a scaling group can be different from the instance types specified in the scaling configuration that is in the Enable state of the scaling group.

Procedure

1. On the scaling group details page, click the Instances tab.
2. On the Add Manually tab, click Add Existing Instance.
3. In the Manually Add ECS Instance dialog box, select the instances that you want to add and click OK.