MongoDB set up admin and security after installed

You must set an admin and password before using mongDB for security reason. You may receive some error when you login to MongoDB shell.

WARNING: Access control is not enabled for the database.


# mongo
MongoDB shell version v4.2.6
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("ca2e8d54-ee4c-4db7-becb-163bdbbea52d") }
MongoDB server version: 4.2.6
Server has startup warnings:
2020-04-29T03:45:58.052+0700 I  CONTROL  [initandlisten]
2020-04-29T03:45:58.053+0700 I  CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-04-29T03:45:58.053+0700 I  CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
2020-04-29T03:45:58.053+0700 I  CONTROL  [initandlisten]
---

Set up Admin in MongoDB

# mongo

use admin
db.createUser(
  {
    user: "mongo_root",
    pwd: passwordPrompt(), // or cleartext password
    roles: [ { role: "userAdminAnyDatabase", db: "admin" }, "readWriteAnyDatabase" ]
  }
)
# vim /etc/mongod.conf
security:
    authorization: enabled
# systemctl restart mongod

To access your database after you set admin and password

# mongo --authenticationDatabase "admin" -u "mongo_root" -p

So the warning message will be gone.

# mongo --authenticationDatabase "admin" -u "mongo_root" -p
MongoDB shell version v4.2.6
Enter password:
connecting to: mongodb://127.0.0.1:27017/?authSource=admin&compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("83818706-d522-4c1b-a5bf-6ef2fa8c80d1") }
MongoDB server version: 4.2.6

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