Troubleshooting
Problem
In a Content Platform Engine (CPE) environment, where CPE deployment on a traditional WebShere Application Server (tWAS) and a CPE container deployment on a Kubernetes or OpenShift cluster are running side by side, a workflow transfer operation can fail.
When a transfer fails, an error is captured in Process Engine (PE) log, for example,
FNRPE2130670002E Failed API_TransferConfig operation.
Exception==[FNRPE2130670002E]Exception encountered executing RPC: http://10.135.23.566:42131/peserverapi?name=jpe_rpc_RemoteLockSingleRegionForModify.
Exception==[FNRPE2130670002E]Exception encountered executing RPC: http://10.135.23.566:42131/peserverapi?name=jpe_rpc_RemoteLockSingleRegionForModify.
....
Caused by: java.net.ConnectException: http://10.135.23.566:42131/peserverapi?name=jpe_rpc_RemoteLockSingleRegionForModify
Caused by: java.net.ConnectException: http://10.135.23.566:42131/peserverapi?name=jpe_rpc_RemoteLockSingleRegionForModify
....
Note: 10.135.23.566:42131 is internal network of the CPE container.
Cause
A workflow transfer operation requires the communication between all PE servers in a PE cluster or farm in order to acquire exclusive region lock.
Because the container has its own internal private network, e.g. IP 10.135.23.566 in the error message, the PE servers in traditional CPE deployment are not able to communicate with the containerized PE running in the CPE container. Therefore, the error occurs during the transfer when a PE server in tWAS attempts to reach a PE server in container.
Resolving The Problem
In a side by side traditional and container environment, any PE-related operations that require PE to PE communication like workflow transfer must be initiated from the container deployment.
To perform a workflow transfer operation, use the URL with a hostname to the CPE container cluster to log on to Administration Console for Content Platform Engine, Content Navigator, or Process Designer.
Alternatively, stop all CPE containers and then perform the workflow transfer from a traditional CPE deployment.
Document Location
Worldwide
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Document Information
Modified date:
02 November 2022
UID
ibm16832472