Sometimes nifi UI is not showing because nifi is not running correctly even if it shows that it is launched, i suggest to check your java_home parameter in the nifi/bin/nifi-env.sh file and see if the path and/or value of jdk corresponds to yours. (note: the java_home parameter in this file is not editabe). ... View more

@Dinesh Jadhav The error Server not found in Kerberos database usually occurs when KDC is unable to identify the entry for service principal requested when connecting to the service. (Mechanism level: Server not found in Kerberos database (7) - LOOKING_UP_SERVER) Can you share your the below-modified files; - krb5.conf - kdc.conf - kadm5.acl Wat values do you have for these params: oozie.service.HadoopAccessorService.kerberos.enabled local.realm oozie.service.HadoopAccessorService.keytab.file oozie.service.HadoopAccessorService.kerberos.principal oozie.authentication.type oozie.authentication.kerberos.principal oozie.authentication.kerberos.name.rules oozie uses jaas configuration for kerberos login can you share it ... View more