Introduction

rc-recycler periodically deletes unnecessary resources from clusters to ensure optimal cluster performance. You can adjust the recycling policy when creating or running rc-recycler.

Notes and Constraints

• This add-on can be installed only in CCE clusters of v1.9 and v1.11.
• Currently, the following features are available: parallel recycling of jobs, log dumping, statistical analysis of recycling, and incremental list caching. Only jobs in the default namespace can be cleared.

Installing the Add-on

1. Log in to the CCE console. In the navigation pane, choose Add-ons. On the Add-on Marketplace tab page, click Install Add-on under rc-recycler.
2. On the Install Add-on page, select the cluster and the add-on version, and click Next: Configuration.
3. Set add-on installation parameters listed in Table 1.

   Table 1 Add-on installation parameters

   Parameter	Description
   Scanning Interval (s)	Interval for scanning resources. Unit: second.
   Retention Period upon Completion (min)	Period for retaining job resources in the cluster after a job is completed. Unit: minute. -1: Permanently retain resources of a completed job. 0: Recycle resources immediately after a job is completed.
   Retention Period upon Failure (min)	Period for retaining job resources in the cluster after a job fails. Unit: minute. -1: Permanently retain resources of a failed job. 0: Recycle resources immediately after a job fails.

4. When the configuration is complete, click Install.

   After the add-on is installed, click Go Back to Previous Page. On the Add-on Instance tab page, select the corresponding cluster to view the running instance. This indicates that the add-on has been installed on each node in the cluster.

Upgrading the Add-on

1. Log in to the CCE console. In the navigation pane, choose Add-ons. On the Add-on Instance tab page, click Upgrade under rc-recycler.
   

   • If the Upgrade button is not available, the current add-on is already up-to-date and no upgrade is required.
   • During the upgrade, the rc-recycler add-on of the original version on cluster nodes will be discarded, and the add-on of the target version will be installed.

2. On the Basic Information page, select the add-on version and click Next.
3. Set the parameters by referring to the parameter description in Installing the Add-on and click Upgrade.

Uninstalling the Add-on

1. Log in to the CCE console. In the navigation pane, choose Add-ons. On the Add-on Instance tab page, click Uninstall under rc-recycler.
2. In the dialog box displayed, click Yes to uninstall the add-on.