## Execute this in master or any node in the presence of /share/apps/configrepo/users_data/userpass.latest.dat
## Specify which host is to be targeted. By default, host='c100'. 
## All users listed in /share/apps/configrepo/users_data/userpass.latest.dat will be added to the node $host

host='c100'

for i in $host
        do
   	cat /share/apps/configrepo/users_data/userpass.latest.dat | while read line || [[ -n $line ]];
		do
		    	echo '$line' $line
			username=$(echo $line | awk   '{print $2}')
			uid=$(echo $line | awk  '{print $3}')
			passwd=$(echo $line | awk '{print $4}')
			command='useradd -u '"$uid"' -g users -p $(echo '"$passwd"' | openssl passwd -1 -stdin) '"$username"
			echo 'adding user '"$username"' in '"$i"
			echo $command
			pdsh -R ssh -w "$i" $command
			chmod -R 755 /home/"$username"
			echo $username with uid $uid and passord $passwd have been added to the cluster
			su - $username -c "yes | ssh-keygen -t rsa -b 4096 -f ~/.ssh/id_rsa -N '' "
			su - $username -c "cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys"
		        chmod -R 600 /home/"$username"/.ssh/id_rsa
			echo ''
        	done
	done