Hi @Shelton Thanks so much for detailed information @MattWho  thanks much for the reply and apologies for short info.  based on above information was able to create SSL certificates and generate Keystore and trustore in jks format . initially i was not configured CA file into truststore so faced some issue 2. then i did not added nifi nodes entries as intial identity in autherizers.xml file so above issue occured . i followed cloudera blogs where you had informed https://community.cloudera.com/t5/Support-Questions/insufficient-permissions-untrusted-proxy/m-p/366443#M239582  based on these i was able to resolve and 3 node cluster with external zookeeper was able to up.  i appreciate your kind help and your time here . much thanks to both 🙂 ... View more

Hi @Shelton  Thanks a a Lot , i did troubleshooting steps as mentioned above and did restart of the all zookeeper and did some configuration changes like in nifi.properties file 1. nifi.zookeeper.connect.string=zookeepernode1.x.x.x.net:2181,zookeepernode2.x.x.x.net:2181,zookeepernode3.x.x.x.net:2181 2. nifi.zookeeper.ssl.client.auth=none 3. nifi.state.management.embedded.zookeeper.start=false in zookeeper nodes[1-3]: 1. dataDir=/var/lib/zookeeper from this location myid file was unable to fetch then we did restart of the VM post that it read it. 2. added  server.1=zookeepernode1.x.x.x.net:2888:3888 server.2=zookeepernode2.x.x.x.net:2888:3888 server.3=zookeepernode3.x.x.x.net:2888:3888 since this is clustered setup this is must . Network configuration: 1. in Network manager enabled all ports like 2181 , 2888 and 3888 in all servers. with above changes made zookeeper to work and nifi is able to connect to external zookeeper cluster. ... View more

@pavanshettyg5  You will get much better traction in the community by starting a new community question rather then adding on to an existing community question that already has an accepted solution. This particular community question is from 2017 Please start a new community question with the details of what you are observing. Thank you ... View more