Is there a way to switch off the ability of mongo to sporadically create dbs and collections as soon as it sees one in a query. I run queries on the mongo console all the time and mistype a db or collection name, causing mongo to just create one. There should be a switch to have mongo only explicitly create dbs and collections. I can't find one on the docs.
3 Answers
To be clear, MongoDB does not auto create collections or databases on queries. For collections, they are auto created when you actually save data to them. You can test this yourself, run a query on a previously unknown collection in a database like this:
use unknowndb
db.unknowncollection.find()
show collections
No collection named "unknowncollection" shows up until you insert or save into it.
Databases are a bit more complex. A simple "use unknowndb" will not auto create the database. However, if after you do that you run something like "show collections" it will create the empty database.
I agree, an option to control this behavior would be great. Happy to vote for it if you open a Jira ticket at mongoDB.
Comments
No, implicit creation of collections and DBs is a feature of the console and may not be disabled. You might take a look at the security/authorization/role features of 2.6 and see if anything might help (although there's not something that exactly matches your request as far as I know).
I'd suggest looking through the MongoDB issues/bug/requests database system here to and optionally add the feature request if it doesn't already exist.