Migrating to Rocky Linux Operating System

This procedure describes how to migrate your Version 8.2 data to the Version 8.4 OVOC server machine running the Rocky Linux Operating system. Before starting the process:

■ Extract current OVOC backup files to an external machine (see OVOC Server Backup Processes).
■ Ensure that the OVOC server has been upgraded to version 8.2.3000 GA:
● Upgrading OVOC Server on Dedicated Hardware
● Upgrading OVOC Server on VMware and Microsoft Hyper-V Virtual Machines
● Upgrading OVOC Server on Amazon AWS and Microsoft Azure
■ Stop OVOC from OvocServerManager (see Start or Restart the Application).

'EmsServerManager' has been renamed to 'OvocServerManager'. Both command strings can be typed in the SSH console.

■ Make sure both Postgres and Cassandra database processes are active (see Viewing Process Statuses).
➢ Do the following:
1. Download the DVD3-OVOC Server Application Installation ISO file containing the Rocky Linux Operating system to your PC.
2. Using the WinSCP utility (see Transferring Files) transfer the DVD3.ISO file to the OVOC Version 8.2 server acems user home directory: /home/acems
3. Login into the OVOC server Version 8.2 machine by SSH, as 'acems' user, and enter the password acems.
4. Switch to 'root' user and provide root password (default password is root): 
su - root
5. Verify that the folder /mnt exists, and if not then create it: 
mkdir /mnt
6. Mount the ISO to make it available: 
mount /home/acems/DVD3_EMS_XXX.iso /mnt
7. Change directory to the script location: 
cd /mnt/EmsServerInstall/
8. Run the installation script: 
perl upgrade_DBs_centos.pl
9. Change directory to the location of the OVOC backup archives: 
cd /data/NBIF/emsBackup

10. Copy the following archives: EMSServerBackup, ovocFullBackup and cassandraBackup to your PC.
11. On Version 8.2 server, copy /opt/ssl/aes/keystore.jckes to /home/acems/ and then to your PC. 
cp /opt/ssl/aes/keystore.jckes /home/acems/keystore.jckes
12. Perform OVOC Version 8.4 clean installation on the same server or on another server:
● Installing OVOC Server on Dedicated Hardware
● Launching Public OVOC Image on Amazon Web Services (AWS)
● Deploying OVOC Image on Microsoft Azure
● Installing OVOC Server on VMware Virtual Machine
● Installing OVOC Server on Microsoft Hyper-V Virtual Machine
13. Login into the OVOC server Version 8.4 machine by SSH, as 'acems' user, and then enter the password acems.
14. Switch to 'root' user and provide root password (default password is root): 
su - root
15. Transfer the archive files using the WinSCP utility (see Transferring Files) to /data/NBIF/ directory.
16. Transfer keystore.jckes from your pc to /home/acems/keystore.jckes on new version 8.4 server.
17. Move /home/acems/keystore.jckes to /opt/ssl/aes/keystore.jckes: 
mv /opt/ssl/aes/keystore.jckes /opt/ssl/aes/keystore.jckes-bk
mv /home/acems/keystore.jckes /opt/ssl/aes/keystore.jckes
18. Start the OVOC Server Manager utility by specifying the following command: 
# OvocServerManager
19. Run the option 'Restore from CentOS' (Application Maintenance menu > Restore) (see Restore from Rocky Linux version 8.x). At the end of the process, the OVOC server is rebooted.

The restore process may take a few minutes.

20. Apply the OVOC license (see OVOC License). At the end of the process, you must restart the OVOC Server application.