Reinstalling a failover cluster node

To reinstall a failover cluster node:

1. Create a backup of the Administration Server. Refer to the article: Using the klbackup utility to back up and recover data.
2. Switch the active node to maintenance mode. Refer to the article: Starting and stopping cluster nodes manually.
3. If you want to replace the device or operating system, skip this step.

   To keep the current operating system, perform the following steps:

   1. Run the following command to stop the failover cluster:

      klfoc -stopcluster --stp klfoc

   2. Run the following commands to forcefully stop failover cluster services:

      sudo systemctl stop klfocsvc_klfoc

      systemctl status kl*klfoc*

   3. Run the following commands to unmount failover cluster directories:

      sudo umount /mnt/KlFocDataShare_klfoc

      sudo umount /mnt/KlFocStateShare

   4. Run either of the following commands depending on your Linux distributive to uninstall Kaspersky Security Center Linux:
      • sudo dpkg --remove ksc64

      or

      • sudo yum remove ksc64
   5. Perform all steps from the following instructions for the passive node:
      1. Preparing nodes for a Kaspersky Security Center Linux failover cluster.
      2. Installing Kaspersky Security Center Linux on the Kaspersky Security Center Linux failover cluster nodes.
4. Exit the maintenance mode. Continue from the step 6 of the Starting and stopping cluster nodes manually instruction.

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