If your upgrade stopped with this ending:
Starting mongo migrations container
exception: connect failed
Then you will need to go through these steps to be able to restart the upgrade.
1. Ssh to the Unomaly shell by choosing <7> and enter in the console menu.
2. Remove the upgrade lockfile:
sudo rm /DATA/unomaly_UPGRADING
3. Reboot the system:
You will be logged out of the ssh session. Log in again when the reboot is finished, and re-enter the Unomaly shell.
4. Type 'unomaly'. You should see a list of services that looks like this:
If the list is shorter or contains services of a different colour, or if any of the service statuses are not "active": contact Unomaly support at firstname.lastname@example.org.
If all services are active, type 'exit' to get back to the console menu. Choose option <9> and run through the upgrade wizard again.