What are the Configurable Instances of Pramati Server?

There are three basic types of Pramati Server configurations:

J2EE (serves EJB and Web applications)
Message Server (serves pure Message Server applications)
Load Balancer (acts as the Pramati Request Dispatcher)

These are set up in the server-config.xml. The default instance is J2EE.

In a J2EE configuration, the Server can be set up as a Standalone Server or a Server Cluster Node. In a Message Server configuration, the Server can be set up as a Standalone Message Server or a High Availability Node.

Note: In the J2EE configuration, the Standalone Server can run Message Server in an embedded mode.

From these three basic configuration types, the following Server instances can be set up.

Standalone Server Configurations Derived From Instances

Standalone Server
Standalone Message Server
Standalone Server with embedded Message Server

The most basic type of J2EE Server instance is the Standalone Server. It exists on a single machine, is not part of any cluster, and acts as an independent server.

Which Server Cluster Node Configurations are Derived From Instances?

The type of Server instance is determined based on the specific services that are enabled through the Pramati Services Framework.

EJB Node
Web Node
Load Balancer Node
HA Message Server Node
J2EE Node (termed BOTH Node)

The Server Cluster J2EE Node has both Web and EJB services enabled in server-config.xml file. A node can be configured as a Standalone Message Server by disabling other services like EJB and Web - as long as there are no inter-service dependencies.

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