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MongoDB management user authentication mechanism is what, I believe many inexperienced people are helpless about this, this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

MongoDB user authentication mechanism

To authenticate clients, you must add a corresponding user to MongoDB. The basic steps are as follows:

User management interface: db.createUser() method can create a user, after adding can assign roles to users, the first user must be an administrator, used to manage other users. You can also update existing users, and you must change passwords and permissions.

Authentication database: When you add a user, you add that user to a specified database, and that database is an authentication database for that user. A user can have access to multiple databases by assigning role permissions.

Authenticate the user: To authenticate the user, you can use the db.author() method.

MongoDB user authentication example

In the admin database, create a superuser to manage other users.

use admindb.createUser({"user":"myadmin","pwd":"password","roles":["root"]})

Log in to the database again, execute: show dbs, and find that it can still be accessed. We need to turn on the authentication mechanism of the database and set the following parameters in the configuration file:

auth=true

Restart MongoDB and log back in.

Execution: show dbs, error occurred

Perform authentication user, perform show users View user information

use admindb.auth("myadmin","password")show users

Show DBs is executed normally.

Create a new user in mydemo database

use mydemodb.createUser({"user":"user1","pwd":"password","roles":["read"]}) Note: This user has only read roles

Do the following to test.

Switch user: db.auth("user1","password") Query collection: db.emp.findOne() --> Can operate normally Insert new document: db.testtable2.insert({"name","Tom"}) ---> Error

Change user password

db.updateUser("user1",{"pwd":"abcd"})

View users: show users

After reading the above, do you know how MongoDB manages user authentication? If you still want to learn more skills or want to know more related content, welcome to pay attention to the industry information channel, thank you for reading!

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