If you followed the procedure outlined previously, a configuration file /etc/mongod.conf will have been auto-generated by the installation script. By default, database files will be placed in /var/lib/mongodb and log files in /var/log/mongodb/mongod.log. Here is an example of the auto-generated file for MongoDB v4.0 on CentOS 7:
You are now able to perform these operations:
| Operation | Command |
| Start | stop | restart the server | /bin/systemctl start|stop|restart mongod.service |
| Access MongoDB via the shell (covered later) | mongo --host 127.0.0.1:27017 |
After starting the service, use the command ...
