MongoDB - admin user not authorized

Question

I am trying to add authorization to my MongoDB. I am doing all this on Linux with MongoDB 2.6.1. My mongod.conf file is in the old compatibility format (this is how it came with the installation). 1) I created admin user as described here in (3) http://docs.mongodb.org/manual/tutorial/add-user-administrator/ 2) I then edited mongod.conf by uncommenting this line `auth = true` 3) Finally I rebooted the mongod service and I tried to login with: `/usr/bin/mongo localhost:27017/admin -u sa -p pwd` 4) I can connect but it says this upon connect. ``` MongoDB shell version: 2.6.1 connecting to: localhost:27017/admin Welcome to the MongoDB shell! The current date/time is: Thu May 29 2014 17:47:16 GMT-0400 (EDT) Error while trying to show server startup warnings: not authorized on admin to execute command { getLog: "startupWarnings" } ``` 5) Now it seems this `sa` user I created has no permissions at all. ``` root@test02:~# mc MongoDB shell version: 2.6.1 connecting to: localhost:27017/admin W…

Accepted Answer

I was also scratching my head around the same issue, and everything worked after I set the role to be root when adding the first admin user.

```
use admin
db.createUser(
  {
    user: 'admin',
    pwd: 'password',
    roles: [ { role: 'root', db: 'admin' } ]
  }
);
exit;
```

If you have already created the `admin` user, you can change the role like this:

```
use admin;
db.grantRolesToUser('admin', [{ role: 'root', db: 'admin' }])
```

For a complete authentication setting reference, see the steps I've compiled after hours of research over the internet.

MongoDB - admin user not authorized

Solution

Problem