Cluster actions

This article describes the actions available for the ADPG cluster in the ADCM UI. You can find cluster actions on the CLUSTERS tab.

The CLUSTERS tab
The CLUSTERS tab

The CLUSTERS tab displays a table with the following columns:

  • Name is a name specified during the cluster creation.

  • Bundle is a name of a bundle used to install the cluster.

  • Description is a description specified during the cluster creation.

  • State is the current cluster state (for example, created, installed, running).

  • Status. This column contains the Status icon green status. The icon varies according to the current cluster status. If a cluster does not work correctly, the Status warning icon orange warning is displayed. When you click the icon, a browser opens the cluster Status page with statuses of all cluster service and their components.

  • Actions. This column displays the Actions icon green arrow. When you click this icon, a drop-down list with available actions is displayed.

  • Import. This column shows the Import icon import. When you click the icon, a browser opens the Import page.

  • Upgrade. This column contains the Upgrade icon upgrade grey that allows you to upgrade the cluster version.

  • Config. This column displays the Configuration icon config. When you click the icon, a browser opens the Configuration page that is described in the following article: Cluster configuring.

  • The last column without a caption displays the Delete icon delete.

You can use icons from the columns described above to perform cluster actions. When an action starts, ADCM displays its execution process and result on the JOBS tab. On this tab, you can expand nodes corresponding to complex actions to see inner steps.

The JOBS tab
The JOBS tab

Actions

Click Actions green arrow to display a drop-down list with the available actions and select an action to run it.

Actions
Actions

When you choose an action, ADCM displays a dialog window to confirm the choice. In this dialog window, you can select the Verbose checkbox to see additional execution details on the JOBS tab.

The Run an action window
The "Run an action" window

Check and Precheck

The Precheck action verifies if hosts have correct settings and all components and services are configured according to the ADPG cluster requirements. Precheck is available before the cluster installation.

The Check action includes Precheck and also checks if the installed cluster components operate correctly. Check is available after the cluster installation.

The actions store the result in the global_adcm_precheck_fail ADCM variable to implement a postponed failure. The result is a boolean value. It is true if the last Check or Precheck action is successful. The false value indicates that an error occurred during checking. In this case, an icon with an exclamation mark fail is displayed against the Check global_adcm_precheck_fail operation. To see it, expand the row corresponding to the Check or Precheck action on the JOBS tab.

An error occurs while performing the action
An error occurs while performing the action

Review inner steps of the Check or Precheck action that are marked as successful to determine the cause of the problem. Click a step to open it and expand a row marked as Fails if such a row exists.

Details of the step execution
Details of the step execution

The global_adcm_precheck_fail variable is also false, if the Check or Precheck action is not executed.

Install monitoring agents

The Install monitoring agents action installs monitoring agents on all hosts of the cluster. You can use this action to enable monitoring after an ADPG cluster installation.

it is necessary to install a monitoring cluster before the Install monitoring agents action execution.

Reinstall

The Reinstall action reinstalls the ADPG cluster. In its Run an action dialog window, you can choose whether ADCM reboots cluster servers after installation.

The Run an action window
The "Run an action" window

Reinstall statuschecker

The Reinstall statuschecker action reconfigures and restarts the status checker for all cluster services.

Start

The Start action starts all cluster services.

Stop

The Stop action stops all cluster services.

Import

When you click Import import, a browser opens the Import page. On this page, you can select components of other clusters (for example, monitoring components) that should be integrated to the ADPG cluster.

The Import page
The Import page

Upgrade

To upgrade an ADPG cluster version, you need to upload a new bundle first. To do this, go to the BUNDLES tab, click Upload bundles and select a new bundle file in your environment.

The BUNDLES tab
The BUNDLES tab

If you see an exclamation mark warning triangle in the Edition column, you need to sign the license agreement to use the uploaded bundle. Click the mark, read the agreement, and click Yes to accept it.

license
Signing the agreement license

When a new bundle is loaded, open the CLUSTERS tab. The Upgrade icon becomes active upgade orange, and you can click it to start the upgrade. A drop-down list with available upgrades is displayed.

Starting upgrade
Starting upgrade

When you select an upgrade version, ADCM shows a confirmation dialog window.

Upgrade confirmation
Upgrade confirmation

After you click Yes, ADCM changes the cluster state to ready to upgrade and fills the drop-down list in the Actions column with two items: Precheck and Upgrade_minor.

Run upgrade actions
Run upgrade actions

Run Precheck action to make sure that hosts have correct settings and all components and services are configured according to the ADPG cluster requirements.

If Precheck is successful (you can find the result on the JOBS tab), execute the Upgrade_minor action. After upgrade, ADCM changes the cluster state to installed.

Delete

If you need to delete a cluster, click Delete delete and confirm this action in the dialog window.

Delete a cluster
Delete a cluster

This action does not remove the ADPG or make any changes to the hosts that belong to the cluster. It only deletes the cluster information from ADCM.

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