Create Superuser in mongo - mongodb

Question

I'm trying to create a user in mongo who can do anything in any db.
According to the guide I created a new admin: http://docs.mongodb.org/manual/tutorial/add-user-administrator
This is the code:
use admin
db.addUser( { user: "try1",
pwd: "hello,
roles: [ "userAdminAnyDatabase" ] } )
Then I stopped mongo, enabled the auth and restarted mongo.
Then I tried to create a database with his user.
According with this guide: http://www.mkyong.com/mongodb/how-to-create-database-or-collection-in-mongodb/
use fragola
db.users.save( {username:"fragolino"} )
And I get this: "not authorized for insert on fragola.users"
Anyone can help me?

Answer 1

from docs.mongodb.org-superuser-roles
Lets write answer that looks simple & also simple to implement
Steps :
1 : sudo apt-get install mongodb-org - in new terminal
2 : sudo mongod --port 27017 --dbpath /var/lib/mongodb
3 : mongo --port 27017 - in new terminal
4 : use admin
5 : As #drmirror said a user should have all 4 roles to be superuser
For Mongo Version 2.
db.createUser(
{
user: "tom",
pwd: "jerry",
roles: [
{ role: "userAdminAnyDatabase", db: "admin" },
{ role: "readWriteAnyDatabase", db: "admin" },
{ role: "dbAdminAnyDatabase", db: "admin" },
{ role: "clusterAdmin", db: "admin" }
]
})
For Mongo Version 3.
db.createUser(
{
user: "tom",
pwd: "jerry",
roles:["root"]
})
6 : sudo /etc/init.d/mongod stop OR sudo service mongod stop - in new terminal
7 : sudo /etc/init.d/mongod start OR sudo service mongod start
8 : restart your pc
9 : sudo mongod --auth --port 27017 --dbpath /var/lib/mongodb - in new terminal
10: mongo --port 27017 -u "tom" -p "jerry" --authenticationDatabase "admin" - in new terminal
Note : step 10 is most important step .
it will give Output on terminal like
MongoDB shell version: 2.6.11
connecting to: 127.0.0.1:27017/test
>

Answer 2

The role userAdminAnyDatabase gives the user the ability to create users and assign arbitrary roles to them. Because of this, that user has the power to do anything on the database, because he can give anybody any permission (including himself).
However, the userAdminAnyDatabase role by itself doesn't allow the user to do anything else besides assigning arbitrary rights to arbitrary users. To actually do something on the database, that user needs to have the following additional roles:
readWriteAnyDatabase
dbAdminAnyDatabase
clusterAdmin
A user who has the above three rights and userAdminAnyDatabase is a true super-user and can do anything.