You can use Operation Orchestration Service (OOS) to perform automated O&M on resources in application groups. For example, you can send remote commands, download files, and customize tasks. This topic describes how to send remote commands as an example.
Log on to the Elastic Compute Service (ECS) console. In the left-side navigation pane, click Applications. On the Applications page, click the name of an application to go to the details page of the application.
Click the O&M tab. On the tab that appears, click Send Remote Command.
Select ECS instances in an application group, enter an O&M command, specify the concurrency ratio, and then click Create.
After the command is executed, find the command execution task in the task list and view the output. Click Details in the Actions column to view the execution details.