https://community.cloudera.com/t5/Support-Questions/kerberos-livy-quot-requirement-failed-Kerberos-requires-livy/m-p/179828#M142074 <P>Hello I am using kerberoized HDP 2.5.3 and I am trying out livy.</P><P>I have setup according to <A href="https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.0/bk_command-line-installation/content/configure_livy.html" target="_blank">https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.0/bk_command-line-installation/content/configure_livy.html</A> and without kerberos livy server can startup and response to http request.</P><P>However if I add the kerberos section in livy.conf then I get this in the log:</P><PRE>[root@master conf]# tail -1000f /var/log/livy/livy-livy-server.out log4j:WARN No appenders could be found for logger (com.cloudera.livy.server.LivyServer). log4j:WARN Please initialize the log4j system properly. log4j:WARN See <A href="http://logging.apache.org/log4j/1.2/faq.html#noconfig" target="_blank">http://logging.apache.org/log4j/1.2/faq.html#noconfig</A> for more info. Exception in thread "main" java.lang.IllegalArgumentException: requirement failed: Kerberos requires livy.server.kerberos.keytab to be provided. at scala.Predef$.require(Predef.scala:233) at com.cloudera.livy.server.LivyServer.runKinit(LivyServer.scala:173) at com.cloudera.livy.server.LivyServer.start(LivyServer.scala:134) at com.cloudera.livy.server.LivyServer$.main(LivyServer.scala:277) at com.cloudera.livy.server.LivyServer.main(LivyServer.scala) </PRE><P>Any idea? Following is the livy.conf</P><PRE>[root@master conf]# cat /etc/livy/conf/livy.conf livy.spark.master = yarn livy.spark.deployMode = cluster livy.environment production livy.impersonation.enabled true livy.server.csrf_protection.enabled true livy.server.port 8998 livy.server.session.timeout 3600000 livy.server.recovery.mode off #livy.server.auth.type = kerberos livy.server.launch.kerberos.keytab = /etc/security/keytabs/livy.headless.keytab livy.server.launch.kerberos.principal = livy/_HOST@LBG.COM #livy.server.kerberos.keytab = /etc/security/keytabs/livy.headless.keytab livy.server.auth.kerberos.keytab /etc/security/keytabs/spnego.service.keytab livy.server.auth.kerberos.principal HTTP/_HOST@LBG.COM livy.superusers=livy </PRE><P>Thank you in advance!</P> Fri, 19 May 2017 19:52:48 GMT David_Tam 2017-05-19T19:52:48Z