Installing MongoDB

This section explains, how to install the MongoDB.

1. Edit the file /etc/yum.repos.d/mongodb-org-4.0.repo with the following content:

   [mongodb-org-4.0]
       name=MongoDB Repository
       baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/4.0/x86_64/
       gpgcheck=1
       enabled=1
       gpgkey=https://www.mongodb.org/static/pgp/server-4.0.asc

2. Install MongoDB, by invoking the command:

   yum install -y mongodb-org

3. Create first user in MongoDB, by invoking the command:

   # Enter into Mongo command-line Shell
       mongo
       # Select admin database inside Mongo shell
   	> use admin;
       # Create first user
   	> db.createUser(
   	...   {
   	...     user: "admin",
   	...     pwd: "changeme",
   	...     roles: [ { role: "root", db: "admin" } ]
   	...   }
   	... )
   

4. Enable authentication in MongoDB, by invoking the command:

   vi /etc/mongod.conf
       security:
       authorization: enabled

5. Restart MongoDB, by invoking command:

   service mongod restart