Hey @Nishu, follow these steps to install saltstack on ubuntu
Add the repo
sudo add-apt-repository ppa:saltstack/salt
sudo apt-get update
sudo apt-get install salt-master
Install and configure Salt-Minion on your client
sudo apt-get install salt-minion
sudo vim /etc/salt/minion
master: saltmaster.yourserver.com
sudo service salt-minion restart
Accept Minion keys on Master
sudo salt-key -L
You'll see minion's key under unaccepted keys. Execute the folowing command to accept the minion's key
sudo salt-key -F <key>