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I am transferring MongoDB databases from one server to another. The servers cannot talk to each other, so I must use mongodump/mongorestore. The 'from' server used authentication for the databases. The 'to' server is in a secure environment, so I'd like to completely obliterate any security/authentication features from the database. Is it as simple as just deleting the *users

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Yes, just db.system.users.remove({}); for each database.

It seems a bit harder to drop the system.users collection, see: but it shouldn't hurt anything if it's empty.

The authentication part is enabled when you run mongod with -auth, so don't put that in your startup script or config file (comment out auth=true, or put auth=false if you're running 2.0+).

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