Running Business Processes and Composite Applications 10.4 | Running Business Processes and Composite Applications | webMethods Task Engine User’s Guide | Configuring the Task Engine Environment | Running Task Engine in a Clustered Environment
 
Running Task Engine in a Clustered Environment
Depending on the runtime on which Task Engine is installed certain requirements and considerations apply for using Task Engine in a clustered environment.
For Task Engine on My webMethods Server:
*If you are working in a clustered Integration Server environment, all Process Engines in the cluster typically share a single instance of webMethods Broker (deprecated) or Universal Messaging, a Process Engine database component, or both. In this case you can connect from Task Engine on My webMethods Server to any Integration Server/ Process Engine in the cluster. Communications will be established with all Process Engines in the cluster.
*If you are working in a clustered My webMethods Server environment, you must apply the Task Engine server role to each server node in the cluster, as described in Administering My webMethods Server. This role must be applied to all nodes of the cluster where Task Engine operations are performed; for example, tasks being worked on (either from an inbox or Task List Management) or queued from the Process Engine. If there are nodes in the cluster where these operations would never happen, this role can be omitted from these nodes.
For Task Engine on Integration Server:
*When Task Engine is running on Integration Server, you use a separate My webMethods Server/Business Console node to administer tasks and provide task user interfaces. Task Engine registers as a My webMethods Server cluster node and requires Universal Messaging for JMS communication and event synchronization.
*When creating a clustered environment, you must add Task Engine instances, running on either Integration Server or My webMethods Server. You cannot create a cluster of Task Engine instances, running on different servers.

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