#! /bin/bash

# Execute this script to add a new user to the cluster globally
echo ' ' 
echo 'Existing users in /etc/passwd of '$HOSTNAME
cat /etc/passwd | awk -F":" '{print $1, $3}' | awk '{if($2>=1000 && $2<4000) {print}}' | sort
echo ' ' 
read -p "Enter new username : " username

/share/apps/local/bin/coc-sshreachable
hosts=$(cat /share/tmp/ssh-reachable.dat)


no=$(cat  /share/apps/configrepo/users_data/userpass.latest.dat | awk '{print $1}' | sort -n | awk 'END {print}' | awk '{print $1+1}')

rm -rf luid.dat
for rn in $hosts
do
	ssh -oStrictHostKeyChecking=no $rn "/export/share/apps/local/bin/coc-uid" >> luid.dat
done
uid=$(cat luid.dat | awk '{print $6}' | sort | uniq | awk 'END {print}')
#echo last userid from all nodes is $userid
rm -rf luid.dat
uid=$(( $uid + 1 ))
#echo 'uid='$uid will be assigned
passwd=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 9 | head -n 1)

#echo $no $username $uid $passwd 
echo $no 	$username 	$uid 	$passwd >>/share/apps/configrepo/users_data/userpass.latest.dat
#echo $no        $username       $uid         $passwd have been appended to /share/apps/configrepo/users_data/userpass.latest.dat

for rn in $hosts
do
	command='useradd -u '"$uid"' -g users -p $(echo '"$passwd"' | openssl passwd -1 -stdin) '"$username"
			echo 'adding user '"$username"' in '"$rn"
			echo $command
			pdsh -R ssh -w "$rn" $command
done
chmod -R 755 /home/"$username"
echo $username with uid $uid and passord $passwd have been added to the cluster 


###
su - $username -c "ssh-keygen -t rsa -b 4096 -f ~/.ssh/id_rsa -N '' "
su - $username -c "cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys"