Clearing Disk Space

Prerequisites

UniAgents have been installed for all ECSs, and are in the running state.

Creating a Task for Clearing Disk Space

1. Log in to the AOM 2.0 console.
2. In the navigation pane, choose Automation (Retiring). The Automation page is displayed.
3. In the navigation pane, choose Scenarios. On the displayed page, click the Clearing Disk Space card, or choose > Create Task in the upper right corner of the card.
4. Set parameters by referring to Table 1.
   Figure 1 Clearing disk space
   

   Table 1 Parameters for clearing disk space

   Parameter	Description
   Task Name	User-defined task name. Enter up to 64 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed. By default, Auto is selected, which means that the system automatically generates a task name.
   Enterprise Project	Select the enterprise project to which the task belongs.
   Platform	Select a platform that the task runs on. Currently, only Linux is supported.
   Clearing Rule	Enter a disk cleanup path, name of the file to be deleted, and file retention days, and click Save in the Operation column. You can also click Add to add more rules. NOTE: Files in the /, /bin, /sbin, /etc, /usr, /usr/bin, /usr/sbin, /boot, and /lib directories cannot be deleted. You can enter an absolute path. Paths for fuzzy match (for example, /var/logs/*/a.log) are not supported. Recursive paths (for example, /var/logs/**/a.log) are not supported. Files generated 1 to 1000 days ago can be deleted from 00:00 on the current day.

5. Select an instance.
   1. Click Add. The instance selection page is displayed. A maximum of 100 instances can be selected for a single task.
   2. For Instance Type, the default value is ECS. For Method, the default value is Specific. For details about the methods, see Table 2.
      Figure 2 Selecting an instance
      

      Table 2 Selection method description

      Selection Method	Description
      Specific	Enter search criteria and select instances from the instance list. By default, instances are searched by name.
      By filter	Enter filter attributes and values to search for instances. If there are multiple filter criteria, the search is performed based on the AND relationship. This method also takes effect for instances added later.
      By tag	Set tag keys and values, and specify one or more tags to select instances. If there are multiple tags, the search is performed based on the AND relationship. This method also takes effect for instances added later.
      From CMDB	Enter search criteria or keywords and select instances from CMDB. There are two types of nodes: Static: Select an ECS under a specified CMDB application. Dynamic: Select a node in the CMDB application to dynamically obtain ECSs under the node. This method also takes effect for instances added later.

6. If needed, expand More to set the review configuration and execution policy by referring to Table 3.

   Table 3 More settings

   Category	Parameter	Description
   Review	Review	Specifies whether to enable manual review. By default, this function is disabled. You can only modify the review configuration by modifying the atomic service card in the tool market.
   	Reviewer	After manual review is enabled, you need to select a reviewer. Alternatively, create a topic and add a subscription on the SMN console to notify a reviewer.
   Execution Policy	Batch Release	Specifies whether to enable batch release. By default, this function is disabled.
   	Instances for Each Batch	Number of instances on which tasks can be executed at the same time.
   	Interval	Interval for executing each batch of tasks.

7. Click Execute. On the task execution page that is displayed, view the task execution status.

   You can also click Save. The created task is displayed on the task management page for subsequent task execution or other operations.