I installed HDP 2.6 and faced same problem while setting up kerberos. it's jar problem. Download policy jars for java: http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html extract and place them in all the servers under /usr/java/jdk1.8.0_112/jre/lib/security/ . Then restart ambari server and restart krb5kds and kadmin services..now check your kdc connection will be pass ... View more