How to run mongod (server) and mongo/mongos shell on Linux

mongodb-on-linux.md

# start the server:
mongod --dbpath /path/to/data/to/be/stored --logpath /log/path/mongo.log

# enter the shell:
mongo
# or
mongos

If there is a problem (a failed connection) try this:

sudo rm -rf /tmp/mongodb-27017.sock

sudo service mongod start

Credit

You can specify a port number:

sudo mongod --port 27018

and open a shell on that port:

mongo --port 27018

On Manjaro / Arch, it now uses openssl-1.3, but MongoDB still requires 1.1.

So there is now a dependency problem.

Started MongoDB Database Server.
/usr/bin/mongod: error while loading shared libraries: libcrypto.so.1.1: cannot open shared object file: No such file or directory
mongodb.service: Main process exited, code=exited, status=127/n/a
mongodb.service: Failed with result 'exit-code'.