What MongoDB user privileges do I need to add a user to a new/another mongo database?

Question

I have enabled authentication in the MongoDB config file after adding one admin user with the following privileges: userAdmin and userAdminAnyDatabase

Answer 1

This is what worked for me for creating a user prod who connects to database prod assuming I had an admin user (called admin) already in the MongoDB:

> mongo admin --username root --password 
> use prod
> db.createUser(
  {
    user: "prod",
    pwd: "",
    roles: [ { role: "dbOwner", db: "prod" } ]
  }
)
> exit

After this you can login with the new user prod like this:

> mongo prod  --username prod --password