For enabling kerberos for zookeeper, we need to follow the below steps: 1) Setup external zookeeper. 2) create file conf/jaas.conf which will contain server keytab and principal. Server {   com.sun.security.auth.module.Krb5LoginModule required   useKeyTab=true   keyTab="/zookeeper/conf/zkpr.keytab"   storeKey=true   useTicketCache=false   principal="zookeeper/localhost@EXAMPLE.COM"; }; 3) create file conf/java.env export JVMFLAGS="-Djava.security.auth.login.config=/zookeeper/conf/jaas.conf" export...