Creating normal users and assigning built-in roles

In this recipe, we will look at how to use built-in roles provided by MongoDB and assign them to users.

Getting ready

You should have a MongoDB instance with authentication enabled and an administrator account created. Refer to the first recipe of this chapter for more details.

How to do it...

1. Connect to the mongod instance using the mongo shell and authenticate as superadmin:

use admin

db.auth('superadmin', 'supasecret')

2. Create a new user and assign it a built-in role:

use mydb

db.createUser(
  {
    user: "mydb_user",
    pwd: "secret",
    roles: [{role: "read", db: "mydb"}]
  }
)

3. You should see that an output similar to this:

Successfully added user: {
        "user" : "mydb_user",
        "roles" : [
                {
                        "role" : "read",
                        "db" : "mydb"
                }
        ]
}

4. Connect to the mongod instance and authenticate.

use mydb

db.auth('mydb_user', 'secret')

5. Execute a count() command:

db...