Make sure no Control Panel files are open for editing under the root user account.
If you are using a third-party billing platform, please ensure that this is compatible with OnApp 5.1 before proceeding with the upgrade! The latest WHMCS modules can be found here.
If you are using WHMCS modules, make sure to update the PHP Wrapper after you update OnApp Cloud. Download the latest wrapper.
We strongly recommend that you test all your custom scripts before upgrading your production environment.
Be aware that OnApp does not support UEFI on static compute resources. You should disable UEFI on your compute resources before installing OnApp.
If you face the problem with viewing the maps on VS/Smart/Application server creation wizard (Locations step), refer to the Add Google Map API Key document.
Getting support for your upgrade
You can use the information in this document to perform your own upgrade to the 5.1 version of the OnApp Cloud. However, if you have a full OnApp Cloud license, you are entitled to free upgrade support from the OnApp Support team.
If you would prefer to have the Support team perform the upgrade for you, just raise a ticket in the normal way. Please be aware, however, that there may be a queue! For help with your upgrade, visit the OnApp community forum: http://forum.onapp.com.