Created question in FIWARE Q/A platform on 23-09-2022 at 10:09
Please, ANSWER this question AT https://stackoverflow.com/questions/73826331/using-fiware-draco-2-1-0-how-to-setup-nifi-cluster-using-external-zookeeper

Question:
Using Fiware Draco 2.1.0 How to setup NiFi cluster using external zookeeper

Description:
I'm trying to set up a NiFi cluster using an external zookeeper version is 3.4.10 container is run kubectl pod.
I have changed the following things in nifi.properties

1. cluster node properties (only configure for cluster nodes) #
   nifi.cluster.is.node=true
   nifi.cluster.node.address=XXXXXXXXXXXXXXXX
   nifi.cluster.node.protocol.port=8082
   nifi.cluster.node.protocol.max.threads=50
   nifi.cluster.node.event.history.size=25
   nifi.cluster.node.connection.timeout=5 sec
   nifi.cluster.node.read.timeout=5 sec
   nifi.cluster.node.max.concurrent.requests=100
   nifi.cluster.firewall.file=
   nifi.cluster.flow.election.max.wait.time=1 min
   nifi.cluster.flow.election.max.candidates=

1. cluster load balancing properties #
   nifi.cluster.load.balance.host=
   nifi.cluster.load.balance.port=6342
   nifi.cluster.load.balance.connections.per.node=1
   nifi.cluster.load.balance.max.thread.count=8
   nifi.cluster.load.balance.comms.timeout=30 sec

1. zookeeper properties, used for cluster management #
   nifi.zookeeper.connect.string=xxxx:2181,xxxx:2181,xxxx:2181
   nifi.zookeeper.connect.timeout=10 secs
   nifi.zookeeper.session.timeout=10 secs
   nifi.zookeeper.root.node=/nifi

I am not able to connect zookeeper getting a connection error
2022-09-23 10:13:23,665 ERROR [main-EventThread] o.a.c.f.imps.CuratorFrameworkImpl Background operation retry gave up
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss
at org.apache.zookeeper.KeeperException.create(KeeperException.java:102)
at org.apache.curator.framework.imps.CuratorFrameworkImpl.checkBackgroundRetry(CuratorFrameworkImpl.java:885)
at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:677)
at org.apache.curator.framework.imps.WatcherRemovalFacade.processBackgroundOperation(WatcherRemovalFacade.java:152)
at org.apache.curator.framework.imps.GetConfigBuilderImpl$2.processResult(GetConfigBuilderImpl.java:222)
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:601)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:510)
2022-09-23 10:13:24,331 INFO [main-EventThread] o.a.c.f.state.ConnectionStateManager State change: RECONNECTED
2022-09-23 10:13:24,331 INFO [Curator-ConnectionStateManager-0] o.a.n.c.l.e.CuratorLeaderElectionManager org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@30dbc287 Connection State changed to RECONNECTED
2022-09-23 10:13:24,431 INFO [main-EventThread] o.a.c.f.state.ConnectionStateManager State change: SUSPENDED
2022-09-23 10:13:24,431 INFO [Curator-ConnectionStateManager-0] o.a.n.c.l.e.CuratorLeaderElectionManager org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@30dbc287 Connection State changed to SUSPENDED

Connection State continues changing reconnecting and suspending
How can I set up a NiFi cluster for using an external zookeeper connection?
Did any one is facing simiar issues with this combination?
Can you please assist