When tried add impala sevice, it recommended to generate missing credentials . when i ran generate missing principles getting below error     /usr/share/cmf/bin/gen_credentials.sh failed with exit code 1 and output of << + export PATH=/usr/kerberos/bin:/usr/kerberos/sbin:/usr/lib/mit/sbin:/usr/sbin:/usr/lib/mit/bin:/usr/bin:/sbin:/usr/sbin:/bin:/usr/bin + PATH=/usr/kerberos/bin:/usr/kerberos/sbin:/usr/lib/mit/sbin:/usr/sbin:/usr/lib/mit/bin:/usr/bin:/sbin:/usr/sbin:/bin:/usr/bin + CMF_REALM=NOKIA.COM + KEYTAB_OUT=/var/run/cloudera-scm-server/cmf1248375954852182588.keytab + PRINC=impala/e2e-02-cdlkc1.nokia.com@NOKIA.COM + MAX_RENEW_LIFE=432000 + KADMIN='kadmin -k -t /var/run/cloudera-scm-server/cmf2325479638505058033.keytab -p root/admin@NOKIA.COM -r NOKIA.COM' + RENEW_ARG= + '[' 432000 -gt 0 ']' + RENEW_ARG='-maxrenewlife "432000 sec"' + '[' -z /etc/krb5.conf ']' + echo 'Using custom config path '\''/etc/krb5.conf'\'', contents below:' + cat /etc/krb5.conf + kadmin -k -t /var/run/cloudera-scm-server/cmf2325479638505058033.keytab -p root/admin@NOKIA.COM -r NOKIA.COM -q 'addprinc -maxrenewlife "432000 sec" -randkey impala/e2e-02-cdlkc1.nokia.com@NOKIA.COM' kadmin: Preauthentication failed while initializing kadmin interface ... View more