@vinith_alampall  Also when you tried to start the components using "start-dfs.sh" then before that have you already copied the Hadoop Binary and Hadoop configuration files to slave nodes as well? Are these slave nodes able to resolve the master node without any issue ... please check their "/etc/hosts" file as well. Following is a blog post which you can refer just to make sure that you did not miss any step before starting the datanode. https://www.linode.com/docs/databases/hadoop/how-to-install-and-set-up-hadoop-cluster/ If you still face any issue then please share the logs specially on the dataNodes whatever logs are generated. ... View more

@vinith_alampall  As you are getting this error: sh: 0: Can't open ./start-yarn.sh   Hence you should check couple of things:   1. Is this file existing in the current directory? # cd /PATH/TO # ls -lart /PATH/TO/start-yarn.sh 2. What is the permission on the file? Can the current user read/execute it? # chmod a+x /PATH/TO/start-yarn.sh # which sh # sh -x /PATH/TO/start-yarn.sh   Please replace the '/PATH/TO" with the actual path of the mentioned script. .       ... View more