First you need following things :

• generate private key from your hosting site ( i used godaddy cpanel )
• username of cpanel
• password of cpanel
• finally passphrase which you have given when creating private key

Download your private key from your hosting site to your desktop , i have download my key from godaddy cpanel , you can find a file named " newssh " which is a private ssh key * name of private may vary

i have renamed the file " newssh " to " newssh.txt " , i have just changed the file extension , so that it can readable by terminal or you can read it using any text based editor like vim , nano or gedit

now you need to move this file from Desktop to your Home Directory , because when you open your directory it will mount home as the default directory

now you can see the " newssh.txt " file is listed in the terminal home directory

Run the following command to change the file permissions to 600 to secure the key. You can also set them to 400. *This step is required:

To login you need to type the following details in the terminal , which loads the key in file newssh.txt and logs in as user ,to IP your server ip

then press Enter key , now it will ask you for the passphrase which you have given at the time for private key creation , type the passphrase  , Press Enter

Congratulation you have successfully login to your server using ssh