Hi All, I am having this same issue and I have tried some of the recommendations above with negative results. I am trying to stand up an HDP 2.4 cluster on centos7. In my experience, I get passed all of the assigning of roles to my name and datanodes and hit deploy. Everything looks like it's going smoothly and then I get smacked with the "Upload Version Definition File Error". At this point things are stalled. I check to see if my ambari-server is still running and it isn't. I try to restart it and I get a postgres "exit code 3. REASON: Unable to start PostgreSQL server". I've tried to reset the server, dump the database, un/re-install ambari-server, and even select the other than default postgres during the setup with same result. Can anyone help? Thanks. ... View more