Some older linux distributions like all CentOS inferior to 7.0  can only run 2.12 and can’t be upgraded to 2.14.

Thus, migrating to a more recent Linux distribution is the best option. To do this, you can:

• Migrate your Siberian to a new server:
  • Pros:
    • No downtime of your apps and Siberian
    • No risks : you can install your Siberian and test if everything is ok before using it.
  • Cons:
    • You have to get a new server then unsubscribe to the old one

• Reinstall your current server with a newest Linux distribution:
  • Pros:
    • You keep your current server
  • Cons:
    • Your apps and your Siberian will be down during the server installation, panel configuration and data transfert.
    • There are more risks : As the server will be erased to install the new Linux distribution. If there is something wrong in the backup it won’t be possible to restore it. (only possibility to be sure of the backup would be to test it on another server).

If you have several websites along with your Siberian on your server, best solution would be to migrate your Siberian alone on a new server.

In both cases, you will have to backup then restore your Siberian:

You can do it following this documentation https://doc.siberiancms.com/knowledge-base/how-to-migrate-my-siberian-install-from-one-server-to-another/

If you choose to get a new server, please check the server requirements: https://doc.siberiancms.com/knowledge-base/siberian-server-requirements/

We will offer a “server backup/restore” service to help you on this, to benefits of it:

• You must have an active support subscription.
• In case of Linux distribution upgrade : you must have only Siberian on your server.