Not authorized for query on admin.system.namespaces on mongodb

Question

I start a new mongo instance, create a user, authorize it, but when I run \"show collections\", the system says that the id is not authorized. I do not know why?

Answer 1

As Robert says, admin users has only rights to admin, not to write in databases. So you have to create a custom user for your database. There's different ways. I have choose the dbOwner way.

(I use Ubuntu Server, mongo 2.6.3 and Robomongo)

So to do this, fisrt create your admin user like mongo says :

type mongo in your linux shell

and these command in the mongo shell :

use admin
db.createUser({user:"mongoadmin",pwd:"chooseyouradminpassword",roles:[{role:"userAdminAnyDatabase",db:"admin"}]})
db.auth("mongoadmin","chooseyouradminpassword")
exit

edit the mongo conf file with :

nano /etc/mongod.conf

You can use vi if nano is not installed.

activate authentication by uncommented/adding these line auth=true

if you want to use Robomongo from other machine change the line bind_ip=127.0.0.1 by bind_ip=0.0.0.0 (maybe you should add more protection in production).

type in linux shell :

service mongod restart
mongo

And in mongo shell :

use admin
db.auth("mongoadmin","pwd:"chooseyouradminpassword")
use doomnewdatabase
db.createUser({user:"doom",pwd:"chooseyourdoompassword",customData:{desc:"Just me as I am"},roles : [{role:"dbOwner",db:"doomnewdatabase"}]})
db.auth("doom","chooseyourdoompassword")
show collections

(customData is not required).

If you want to try if it works, type this in the mongo shell :

db.products.insert( { item: "card", qty: 15 } )
show collections
db.products.find()

Good luck ! Hope it will help you and others !

I have search this informations for hours.