How to upgrade a cluster

Upgrading is usually quick and trouble-free and all your configuration data is maintained (as well as being backed up prior to updating).

Please note that all nodes in the cluster must be the same version. Please ensure you download the production installation - the link (including credentials) is included in your purchase email. The trial installation will not install.

Do the following steps in order:

1. Close CompleteFTP Manager on the primary.
2. Stop the CompleteFTP service on the primary.
3. On each of the secondaries:
   • Close CompleteFTP Manager if it's open.
   • Uninstall the old version of CompleteFTP.
   • Install the new version of CompleteFTP.
   • Take care to enter the same administrator password on all the nodes.
4. Once you've upgraded each of the secondaries do the same to the primary, again making sure to enter the same administrator password.

The CompleteFTP service will be started on each secondary machine during installation and will keep trying to contact the primary, which will of course fail until it's been upgraded and restarted. Once the primary has been upgraded it will restart and immediately contact each of the secondaries. As long as the passwords all match the cluster should now be back online and synchronized again.

In-place upgrades

It's possible to do in-place upgrades of CompleteFTP servers in a load-balancing cluster. The general approach is to load-balance away from each individual machine and upgrade it while it's not being used, starting with the primary and then continuing with the secondaries until all machines have been upgraded. No configuration changes should be made during this process, although no serious error should occur if it proves necessary. The cluster will no be fully operational until all machines are running the same version of CompleteFTP.