How to check the current configuration of MongoDB

Found the answer: https://stackoverflow.com/a/9361047/947305

There's a getCmdLineOpts command in the mongo shell. Run the following:

db._adminCommand( {getCmdLineOpts: 1})

to get live settings, you can use

db.adminCommand({getParameter:"*"})

previously called _adminCommand with underscore in front, so if you have old mongo running, try that one.

https://docs.mongodb.com/manual/reference/command/getParameter/