Add a second ssh user to a subscription?

For reasons known only to a select few in Plesk HQ they do not allow more than 1 ssh user per subscription. Normally this is not much of a problem as each app should be limited to its own subscription and a single ssh user is often enough. However, there are many times when you need to add a second user.  In order to do this you will need to access ssh as a sudo user.  If your user does not have this please raise a ticket and we will fix this. 

1) create a normal ftp user in plesk.
2) edit /etc/passwd eg 
sudo vi /etc/passwd
3) find the new user
4) change that users entry from 
ftp_user:x:10002:1003::/var/www/vhosts/mydomain.com:/bin/false
to
ftp_user:x:10002:1003::/var/www/vhosts/mydomain.com:/bin/bash
5) restart ssh eg
service ssh restart

This will allow that ftp user to access ssh inheriting the same permissions as the default subscription user. 

Note this type of user cannot have sudo access.