# Installing Operating System Updates on Existing Nodes

Operating system (OS) updates can be installed on HyperScale nodes to ensure that the OS has the most recent updates.

You can install the OS updates from the Command Center.

Note

To install OS updates from the Command Center, the CommServe server must reside outside the Hyperscale cluster. If the CommServe server is within the HyperScale cluster, you can install the OS updates using scripts. For more information, see Installing Operating System Updates Using Command Line.

## Before You Begin

- Verify that the CommServe and HyperScale nodes have Commvault platform release 2022E or later installed. The CommServe and the nodes must be on the same release version.

- The update process installs the updates provided by Red Hat for the OS. The process does not update other RPMs that may have been manually installed on the nodes.

- Navigate to `/etc/yum.repos.d` and cleanup everything, except `redhat.repo`. Download software will fail if there is anything other than the redhat repository.

- If the HyperScale nodes are setup using a 1Gig management network, make NFS share on the remote cache accessible to all the nodes in the network. For more information about enabling access, see Enabling Access to NFS Shares to the Nodes.

## Procedure

1. Verify that the remote cache is set up on one of the HyperScale nodes in the existing storage pool using the following steps:

   (By default, the remote cache is configured in one of the nodes when a storage pool is configured. It is important to verify and confirm the availability of the remote cache in one of the nodes in the existing storage pool.)

   1. From the Command Center navigation pane, go to Manage > Maintenance.

      The Maintenance page appears.

   2. Click Download or copy software.

      The Download or copy software section appears, showing the current feature release, the latest available feature release, and the last job that was run.

   3. Click Schedule Job .

      The Download or copy software dialog box appears.

   4. In Remote caches to sync, expand Servers and make sure that one of the nodes in the cluster is listed. (This is automatically created when you configure the storage pool.)

      Note

      If there are multiple HyperScale clusters on a CommServe, one remote cache is required for each cluster.

      If one of the nodes from the cluster is not listed, setup the remote cache on a node that has the DDB configured, to make sure that the remote cache is setup on one of the HyperScale nodes in the cluster. The OS updates will be installed, (or orchestrated) from this node. For more information, see Setting Up a Remote Cache on a Client Computer.

   5. Click Cancel to close the dialog box.

2. Download the latest updates and populate the remote cache as follows:

   1. From the Command Center navigation pane, go to Manage > Maintenance.

      The Maintenance page appears.

   2. Click Download or copy software.

      The Download or copy software section appears, showing the current feature release, the latest available feature release, and the last job that was run.

   3. Click Run job .

      The Download or copy software dialog box appears.

   4. Select Download software using Internet or Local Copy, depending on your environment.

   5. In Download installation media, select the available feature release or maintenance release installation files that you want to download.

   6. In Operating system options, select the Unix check box, and then select Linux x86_64 from the drop-down list.

      Note

      The latest OS updates will be downloaded, irrespective of the selected option.

   7. In Remote caches to sync, select the HyperScale node in which the remote cache is configured.

   8. Click Download.

   Monitor the progress of the download job to ensure that the software is successfully downloaded and synchronized. For more information, see Viewing Jobs.

3. Set the MediaAgents associated with the nodes in the Maintenance mode. For more information, see Setting the MediaAgent on Maintenance Mode.

   Important

   Make sure that all the MediaAgents in the storage pool are set in the maintenance mode before proceeding to the next step.

4. Create a server group which includes all the hyperscale nodes in the cluster. For more information, see Adding a Server Group.

5. From the Command Center navigation pane, go to Manage > Infrastructure > Server groups.

   The Server groups page appears.

6. In the row for the server group that contains the hyperscale nodes that you want to update, click the action button , and then select Upgrade software.

   The Confirm software upgrade dialog box appears.

7. Select the Install operating system updates check box.

8. Select the Reboot if required check box.

9. Click Yes.

   Monitor the progress of the upgrade job to ensure that the OS software is successfully updated. For more information, see Viewing Jobs.

10. Using the Command Center, remove the MediaAgents associated with the nodes from Maintenance mode. For more information, see Setting the MediaAgent on Maintenance Mode.

    Note the following:

    - The updates will be installed sequentially on each HyperScale node available in the current cluster.

    - At the end of update installation, each node will be rebooted before moving on to the next node.

    The remote cache node (or the node from which the OS updates are installed) will be the last node to reboot. The upgrade will automatically resume after the reboot but may take some time to complete the post upgrade operations in this node.

## Result

- The updates will be installed in all the HyperScale nodes.

- If the OS version is upgraded, you can verify the OS version as follows:

  1. From the Command Center navigation pane, go to Manage > Infrastructure > Server groups.

     The Server groups page appears.

  2. The server name, OS version, and other details are displayed for each server in the server group.

## Related Topics

Setting Up Non-Root LDAP Users

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