MongoDB Administrator's Guide

How to do it...

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

use admindb.auth('superadmin', 'supasecret')

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

use mydbdb.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 mydbdb.auth('mydb_user', 'secret')

5. Execute a count() command:

db.mockdata.count()

6. You should see an output similar to this

100000

7. Now try to insert a document

db.foo.insert({bar:1})

8. You should see an output similar to this:

WriteResult({ "writeError" ...