Hi, im trying to Import the KDC Account Manager credentials with REST API call without any success   i'm running the following command:  curl -X POST -u "admin:admin" -i \ -H "Content-Type:application/json" \ -d '{"items": [ { "username": "cloudera-scm/admin@<HOSTNAME>.KERBEROS.COM" , "password": "<PASS>" } ] }' \ http://localhost:7180/api/v11/cm/commands/importAdminCredentials and i'm getting the error below in cloudera-scm-server.log:  2016-07-17 15:42:09,032 INFO 1919433329@scm-web-78:com.cloudera.server.web.cmf.AuthenticationSuccessEventListener: Authentication success for user: 'admin' from 127.0.0.1 2016-07-17 15:42:09,040 INFO 1919433329@scm-web-78:com.cloudera.cmf.service.ServiceHandlerRegistry: Executing command ImportCredentials with sensitive arguments. 2016-07-17 15:42:14,066 ERROR CommandPusher:com.cloudera.cmf.command.CommandHelpers: ImportCredentials - Execution error: java.lang.NullPointerException at java.lang.ProcessBuilder.start(ProcessBuilder.java:1010) at com.cloudera.cmf.security.ImportCredentialsCommand.generateKeytab(ImportCredentialsCommand.java:174) at com.cloudera.cmf.security.ImportCredentialsCommand.access$400(ImportCredentialsCommand.java:49) at com.cloudera.cmf.security.ImportCredentialsCommand$2$1.run(ImportCredentialsCommand.java:210) at com.cloudera.cmf.security.ImportCredentialsCommand$2$1.run(ImportCredentialsCommand.java:202) at com.cloudera.cmf.security.components.SecurityUtils.runWithGenerateKrb5Conf(SecurityUtils.java:334) at com.cloudera.cmf.security.ImportCredentialsCommand$2.call(ImportCredentialsCommand.java:202) at com.cloudera.cmf.security.ImportCredentialsCommand$2.call(ImportCredentialsCommand.java:198) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 2016-07-17 15:42:14,067 INFO CommandPusher:com.cloudera.cmf.model.DbCommand: Command 197(ImportCredentials) has completed. finalstate:FINISHED, success:false, msg:null               when i'm running the same process from Cloudera manager UI it passed seccessfully              Please advice     ... View more