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1. Back up the configuration (see Configuration backup and restore for failover VMS).
2. Go to the HOSTS page.
   

3. Click UPDATE.

   Note
   title Attention!
   You can bulk update the entire cluster only if all of its servers are accessible.

   
   

4. On your computer, select the required distribution in zip archive, or specify a web link (1).
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5. Select the update method: all Servers simultaneously, or one after another (2). In the former case, all nodes operation will be halted until the update is finished, in the latter case the nodes will operate without interruption.

6. To record all installation-related events to a log file (3), select the Enable full installation log checkbox.

7. Click START.

   The installation package download starts. You can cancel the update unless the download is complete.Image Removed

8. After the installation package is downloaded, C-Werk will be updated in quiet mode on all Servers within the cluster. Depending on the previously selected update method, the Servers will be updated simultaneously or one after another.
   
   After the update is completed on a Server, its status will change to Done.

   Info
   title Note
   If the update fails, you will see the Error message in the status bar.

   After all Servers within the cluster are updated, the status at the top of the page will also change.