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[[_clustering]]
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== Clustering
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This section covers configuring {project_name} to run in a cluster. There's a number
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of things you have to do when setting up a cluster, specifically:
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* <<_operating-mode,Pick an operation mode>>
* <<_database,Configure a shared external database>>
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* Set up a load balancer
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* Supplying a private network that supports IP multicast
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Picking an operation mode and configuring a shared database have been discussed earlier in this guide. In this chapter
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we'll discuss setting up a load balancer and supplying a private network. We'll also discuss some issues that you need
to be aware of when booting up a host in the cluster.
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NOTE: It is possible to cluster {project_name} without IP Multicast, but this topic is beyond the scope of this guide. For more information, see link:{appserver_jgroups_link}[JGroups] chapter of the _{appserver_jgroups_name}_.