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Requirements for Each Integration Server in a Cluster
The following table describes the requirements of each Integration Server in a given cluster:
All Integration Servers in a given cluster must have identical...
For Example...
Integration Server versions
One Integration Server in the cluster cannot be version 8.2 and another Integration Server in the cluster be version 8.0.
Adapter packages
All adapter packages on one Integration Server should be replicated to all other Integration Servers in the cluster.
Adapter versions
All Integration Servers in the cluster must have the same version of the adapter, with the same fixes (updates and service packs) applied.
Adapter connections
With Salesforce.com there is no physical connection. A Adapter for Salesforce connection simply maintains the session binding details.
If you plan to use connection pools in a clustered environment, see Considerations When Configuring Connections with Connection Pooling Enabled.
Adapter services
If you configure a specific adapter service, this same adapter service must appear on all servers in the cluster so that any Integration Server in the cluster can handle the request identically.
If you allow different Integration Servers to contain different services, you might not derive the full benefits of clustering. For example, if a client requests a service that resides on only one server, and that server is unavailable, the request cannot be successfully redirected to another server.
Adapter notifications
If you configure a specific adapter notification, this same adapter notification must appear on all servers in the cluster.
Important:
When Adapter for Salesforce listener notifications subscribed to the same push topic are enabled on all nodes in an Integration Server cluster, the notifications receive duplicate messages from the topic. To avoid duplicate messages, Software AG recommends that you keep a listener notification enabled only on one of the Integration Server nodes in a cluster for each push topic.
See Replicating Packages to Integration Server Administrators for information about replicating adapter packages, connections, and adapter services across multiple Integration Servers in a cluster.