The short answer is that the
--dbpath parameter in MongoDB will allow you to control what directory MongoDB reads and writes it’s data from.
mongod –dbpath /usr/local/mongodb-data
Would start mongodb and put the files in
Depending on your distribution and MongoDB installation, you can also configure the
mongod.conf file to do this automatically:
# Store data in /usr/local/var/mongodb instead of the default /data/db dbpath = /usr/local/var/mongodb
The official 10gen Linux packages (Ubuntu/Debian or CentOS/Fedora) ship with a basic configuration file which is placed in
/etc/mongodb.conf, and the MongoDB service reads this when it starts up. You could make your change here.