https://community.cloudera.com/t5/Support-Questions/Kerberos-principal-should-have-3-parts-in-sandbox-HDP-2-5/m-p/109281#M72131 <P>I think it is correct, here's the file /etc/hosts</P><PRE>127.0.0.1 localhost sandbox.hortonworks.com ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters</PRE> Fri, 17 Feb 2017 09:07:53 GMT jzhang 2017-02-17T09:07:53Z