The clustering plugin adds support for running multiple redundant Openfire servers together in a cluster. By running Openfire in a cluster, you can distribute the load amongst a number of servers, as well as having some form of redundency in the event that one of your servers dies.
Copy clustering.jar into the plugins directory of your Openfire installation. The plugin will then be automatically deployed. To upgrade to a new version, copy the new clustering.jar file over the existing file.
To upgrade from Enterprise, you will need to shut down your server, remove the enterprise.jar file and enterprise directory from the plugins directory in your Openfire install root, and then install the clustering.jar plugin.
To enable clustering, you will need to provide a license file under the
Server --> Clustering tab. An existing Openfire Enterprise license
with clustering support will work. After that, you can configure
clustering under:
Server --> Server Manager --> Clustering
To purchase a license for the clustering plugin, you will need to contact a sales rep at Jive Software.