Disabling an AS Group

Scenarios

When you are required to stop an instance in an AS group for configuration or upgrade, disable the AS group before performing the operation. This prevents the instance from being deleted in a health check. When the instance status restores, enable the AS group again.

If a scaling action, for example, creating an instance or EVS disk, consistently fails (the failure cause can be viewed on the Elastic Cloud Server page) and retries in an AS group, use either of the following methods to stop the retry:

• Disable the AS group. Then, the scaling action that is being performed fails and will not retry. Enable the AS group again when the environment recovers or after replacing the AS configuration.
• Disable the AS group and change the expected number of instances to the number of existing instances. After the scaling action fails and ends, the scaling action will not retry.

After an AS group is disabled, its status changes to Disabled. AS does not automatically trigger any scaling actions for a Disabled AS group. When an AS group has an in-progress scaling action, the scaling action does not stop immediately after the AS group is disabled.

You can disable an AS group when its status is Enabled or Abnormal.

Procedure

1. Log in to the management console.
2. Under Computing, click Auto Scaling. In the navigation pane on the left, choose Instance Scaling. Then click the AS Groups tab.
3. In the AS group list, locate the row containing the target AS group and click Disable in the Operation column. You can also click the AS group name and then Disable to the right of Status on the Basic Information page to disable the AS group.
4. In the Disable AS Group dialog box, click Yes.