@kalhan    While it is possible to have a single ZK cluster to support multiple services, It is the recommendation that NiFi have its own dedicated ZK cluster.  NiFi cluster stability is dependent on ZK and many of the NiFi processors that can be used depend on on Cluster state which is also stored in ZK.  IF ZK becomes overburdened it can affect overall stability and performance of NiFi. If you found any of the answers provided on this query helped you, please select "accept solution" on each of them. Thank you, Matt Hope this helps. ... View more