Chapter 2. Apache Karaf Cellar

Apache Karaf Cellar is a provisioning cluster solution for Apache Karaf.

It's an Apache Karaf subproject released under the Apache 2 license. To know more, please visit http://karaf.apache.org/index/subprojects/cellar.html.

Apache Karaf Cellar allows you to manage a farm of Apache Karaf instances spread over different machines and networks.

As a provisioning cluster solution, Apache Karaf Cellar synchronizes the states of the different instances. By synchronization, we mean that an action on a resource from a node will result in a notification to change for the other nodes.

The following topics will be covered in this chapter:

• Cluster topologies
• Apache Karaf Cellar architecture
• Apache Karaf Cellar installation
• Cluster resources