@Majid Ali Syed Amjad Ali Sayed I noticed on the screenshot you attached that started manually the agent on krplhadoop02 (see attached file)krplhadoop-ambari-agent.jpg The agent will be installed by the during the Ambari server installation ! Please clean up that host and relaunch the Ambari install My biggest worry was the passwordless login configuration between the servers in the cluster ,so I had this procedure for you The assumption here is that you are running the Ambari installation as root 1.Delete the directory .ssh in roots home directory on krplhadoop.kaimrc [root@krplhadoop.kaimrc]#ssh-keygen Accept the defaults
[root@krplhadoop.kaimrc]# ls
authorized_keys id_rsa id_rsa.pub known_hosts The first one contains the private key, the second one contains the public key for user root. 2. Now run the command [root@krplhadoop.kaimrc]#cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys this will add the contents of the root’s file id_rsa.pub to a file authorized_keys. Therefore, if a user will connect to this machine by SSH and will specify the correct private key, this machine will look up into authorized_keys and will know that this is root. 3. Copy this file authorized_keys as root to krplhadoop2.kaimrc in /root/.ssh directory
Also check the permissions on the .ssh directory, id.rsa,authorized_keys and id_rsa.pub keys 4. Configure Database for ambari assuming you are using MySQL and don't forget to yum install mysql-connector-java and the appropriate permissions 644 5. Pre-load the Ambari database schema into your MySQL database then and pre-load the Ambari database schema into your MySQL database 6. [root@krplhadoop.kaimrc]# yum install ambari-server 7. [root@krplhadoop.kaimrc]#ambari-server setup /* output Ambari Server 'setup' completed successfully.*/ 8. [root@krplhadoop.kaimrc]# Start the server #ambari-server start
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