MongoDB (from humongous) is an open source document-oriented database system developed and supported by MongoDB Inc. (formerly 10gen). It is part of the NoSQL family of database systems. Instead of storing data in tables as is done in a "classical" relational database, MongoDB stores structured data as JSON-like documents with dynamic schemas (MongoDB calls the format BSON), making the integration of data in certain types of applications easier and faster.
# pacman -S mongodb
# systemctl start mongodb
(Optional) Add MongoDB to the list of daemons that start on system startup
# systemctl enable mongodb
Access the database shell
To access the Database shell you have type in your terminal
MongoDB won't start
Check that there is at least 3GB space available for its journal files, otherwise mongodb can fail to start (without issuing a message to the user).
$ df -h /var/lib/mongodb/
Check if the lock file exists
# ls -lisa /var/lib/mongodb
If it does, stop the mongodb service, and delete the file. Then start the service again.
# rm /var/lib/mongodb/mongod.lock
If it still won't start, run a repair on the database, specifying the dbpath (/var/lib/mongodb/ is the default --dbpath in Arch Linux)
# mongod --dbpath /var/lib/mongodb/ --repair
After running the repair as root, the files got chowned to root, whilst Arch Linux runs it under a different user. You then need to chown back the files. Further reference
# cd /var/log/mongodb # sudo chown -R mongodb:mongodb . # cd /var/lib/mongodb # sudo chown -R mongodb:mongodb .
Check that the boost-libs package is up to date. MongoDB requires a specific version, however, the package does not restrict the version of this dependency.