MongoDB access control isn't enabled for the database

A warning appears when connecting to MONGO: MongoDB access control is not enabled for the database

In fact, this is the problem of MONGO permissions, we have a lower privilege when connecting mongo.exe, this warning can be ignored. You can also use a new user name and password to resolve this issue:

1. Start the MongoDB service in the bin directory:

Mongod--port 27017--dbpath "C:\data\db"

2. Connecting Mongo.exe

MONGO--port 27017

3. Create a new user

Use admin
db.createuser (
  {
    User: "Mongouser",
    pwd: "123",
    roles: [{role: "Useradminanydatabase" , DB: "Admin"}]
  }
)

4. Restart the MongoDB service

Mongod--auth--port 27017--dbpath/data/db

5. Connect Mongo.exe with user name and password

MONGO--port 27017-u "Mongouser"-P "123"--authenticationdatabase "admin"

You can see that the MONGO has been connected successfully, and there is no warning.