I found the following worked for me - [ Metron 0.4.0 for Amazon EC2 Install]: -------------------------------------------------------------------------------------------------------------------- (These steps don't apply to modifying/configuring an existing Metron deployment. The steps include modifying the 0.4.0 code first [which was cloned from github] and then making a fresh new cloud install/deployment. If you found that "Metron REST" is failing to restart these steps might resolve the issue.) 1) After downloading the 0.4.0 code from github, update the metron-rest file that is in this location: metron/metron-interface/metron-rest/src/main/scripts/metron-rest on line 148 change "$0 start" to "$0 start $2" This fix was found here 2) Run ./run.sh to kickoff the process of installing 0.4.0 to Amazon EC2 (as you normally would) 3) Then follow asubramanian steps: " a) Login to Ambari UI -> Metron -> Configs -> Advanced -> Advanced metron-env. And ensure that the "Active Spring profiles" parameter is set to the value "dev". Then restart Metron REST service. 4) Restart all required process 5) After the processes have been restarted (and all statues are green) you can get to the Metron UI through Ambari with these steps: Click on the "Services" tab (between "Dashboard" and "Hosts"). Click on "Metron" in the left panel. Click on the "Quick Links" drop down menu. Then click on "Management UI" 6) "Fire up the Metron Management UI (http://node1:4200) and use the credentials "admin/password" ... View more