This guide explains how to upgrade the Rhino Element Manager (REM) to a later version.
The procedure described by this guide is appropriate for upgrading REM and its plugins, when installed on top of Apache Tomcat, which is the typical setup for VM images provided by Metaswitch. For upgrading other types of REM installation, refer to the manual REM upgrade procedure. If it’s not clear yet whether your installation is based on Apache Tomcat, it will become apparent during the pre-upgrade checklist.
This upgrade manual makes references to elements of the Operational Tools Architecture, which explains at a high level the design of the upgrade process as well as low-level information on use of the upgrade bundles and tools.
If the upgrade procedure is to be performed on a production site, then take the above book and this book offline to use as reference.