Tomcat 7 Manager - how to authenticate?

Question

I am trying to log in tomcat manager app but i cannot successfully create a login user in the tomcat-users.xml. The initial content was this:

Answer 1

Accepted answer is wrong in one detail but VERY imporant one - there shouldn't be ANY spaces between roles for admin, as this list should be comma separated (as pointed out here Tomcat 7 Manager can't login). I just had same problem and resolved it same way.

So, instead of this (as suggested in some answers:

it MUST be like this:

So altogether it should look like this: