@Afroz Baig Firstly you really don't need to modify manually the krb5.conf as they MUST be identical on all the cluster nodes. What you should do is run scp from the Ambari server where you configured the passwordless connection. Assuming your Ambari Server hosts file entry has all the cluster node and egdenode1 is your target # scp /etc/krb5.conf root@edgnode1:/etc/ This will copy and overwrite the incorrect krb5.conf on the edge node. Assuming you have a user named analyst01 on the edge node who intends to run a job after the update you will do the following as user analyst1 assuming he has his keytab in his home directory # su - analyst01 To determine if he has a valid ticket, in the below he didn't have one # klist klist: No credentials cache found (filename: /tmp/krb5cc_0) Grab a ticket $ kinit -kt /home/analyst01/analyst01.keytab Now he should be able to grab a valid ticket and the klist should validate that $ klist Ticket cache: FILE:/tmp/krb5cc_1013 Default principal: analyst01-xxx@{REALM} Valid starting       Expires              Service principal 04/13/2019 23:25:32  04/14/2019 23:25:32  krbtgt/_host@{REALM} 04/13/2019 23:25:32  04/14/2019 23:25:32  HTTP/_host@{REALM} You don't need to restart any services on the edge node ! ... View more

@Dennis Suhari The command you are running is wrong , it's the wrong variation you forgot a dash - Note the space before and after the dash !! As the root user run # su - yarn That should work HTH ... View more

@Naveenraj Devadoss You need to copy the core-site.xml and hdfs-site.xml from your HDP cluster to the machine where NiFi is running. Then configure PutHDFS so that the configuration resources are "/path/to/core-site.xml,/path/to/hdfs-site.xml". That is all that is required from the NiFi perspective, those files contain all of the information it needs to connect to the Hadoop cluster. You'll also need to ensure that the machine where NiFi is running has network access to all of the machines in your Hadoop cluster. You can look through those config files and find any hostnames and IP addresses and make sure they can be accessed from the machine where NiFi is running. HTH ... View more