We need to capture and share changes from our DB2 z/OS environment into a Kafka based information hub. We have tried ETL tools to do similar but we are concerned about the impact of ETL on our source DB2 z/OS environment.
The IBM IDR product has numerous customers replicating data from db2 z/OS, VSAM, IMS, etc. It has options for both remote Z access and a mainframe install each with its own advantages. I own the Kafka Target side of this product as a disclaimer
I believe some z to Kafka is covered in this video has some Z to Kafka replication.
https://ibm.box.com/s/ur8jokg6tclsx5fcav5g86a3n57mqtd5
Originating from this link
CDC Replication has additional advantages of being able to capture the history of change to a database, in contrast to intermittent snapshots. Some applications for this are auditing, or moving average performance monitoring in real-time.
ON the Kafka side a number of different formats are included, with the ability to define just about any messaging behaviour desired.
There is a presentation called expose your data not your database given at an IDUG conference you might be interested in.