@Majid Ali Syed Amjad Ali Sayed I have 2 node cluster running in my environment. If you have not fixed this then do this "Assuming that you are just doing this in your lab" [root@phdns01 ~]# ambari-server reset Using python /usr/bin/python2 Resetting ambari-server **** WARNING **** You are about to reset and clear the Ambari Server database. This will remove all cluster host and configuration information from the database. You will be required to re-configure the Ambari server and re-run the cluster wizard. Are you SURE you want to perform the reset [yes/no] (no)? yes Confirm server reset [yes/no](no)? yes Resetting the Server database... Connecting to local database...done. WARNING: Non critical error in DDL, use --verbose for more information Ambari Server 'reset' completed with warnings. Once it's done then you can try to reinstall the cluster. Your /etc/hosts looks fine.
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