Setting up MongoDB Client Authentication in Ubuntu

This article is a slight variant of the official MongoDB guide for enabling client authentication focused more on setting up client authentication in ubuntu. If you are using any other operating system, please follow the official guide instead.

MongoDB by default does not enable client authentication when you install it via apt-get. To enable client authentication, follow the given steps.

Open **/etc/mongod.conf** file in your favorite editor.

Add the following two lines to the file if it does not exist

security: authorization: disabled

If above lines are there in the file, make sure you have authorization value as disabled. The file will look similar to follows:

Then restart MongoDB by running:

sudo service mongod restart

By adding the above changes to the file, we make sure we can easily enable authorization in MongoDB by simply changing the value for authorization from **disabled** to **enabled**.

Then open a separate terminal and connect to MongoDB without authentication.

mongo --port 27017

This will summon a mongo shell and run following commands to add authentication to your database. Replace mydatabase with your database name which you want to add authentication to, and use your own username and password. The following example was shamelessly copied from the official guide.

use mydatabase
    user: "myUserAdmin",
    pwd: "abc123",
    roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]

Role can be any of the roles of the given specification by mongodb, or any user-created role.

Then open /etc/mongod.conf file again and enable client authentication by changing authorization:disabled to authorization:enabled.

Then restart MongoDB with authentication enabled.

sudo service mongod restart

Then you should be able to connect to your database only by providing your username and password given.

Go and check whether authentication works.

I hope this guide will help who are trying to setup mongodb on ubuntu and want to run it using sudo service mongod .

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