how do I set the logging level to info for MongoDb?

Question

I have a Rails app that uses MongoDb on the back. I have these messages that say MONGODB [WARNING] Please note that logging negatively impacts client-side performance.

Answer 1

If you're using mongoid 2.2 or higher, you can set it in mongoid.yml:

production:
  hosts:
    ...
  database: ...
  logger: false

Also, this does have a performance impact. When I turned off mongo logging in production, I saw fewer garbage collections and app instance memory footprints were about 15 megabytes smaller during 30-minute load tests using apachebench.