Mongo auth setup

MongoDB Auth 配置

Start MongoDB without access control

mongod --port 27017 --dbpath /data/db1

Connect to the instance
```
  mongo --port 27017
```

Create the database administrator

Add a use with the userAdminAnyDatabase role (this is DB SA role, this role even can’t show collections,not db user rol)

  use admin
  db.createUser(
    {
     user: 'sa',
     pwd: 'welcome1',
     roles:[ { role: "userAdminAnyDatabase", db: "admin" }]
    }
      
 }
     
 #you can use "show user" show all user in current database
     
 use <database>
 show users
     
 # if you want show current mongo instance all database  user
 user admin
 db.system.users.find().pretty()

Re-start the MongoDB instance with access control Restart ths mongod instance with the –auth option,if using a conf file , the “security.authorization” setting.
```
mongod --auth --port 27017 --dbpath /data/db1
```

Authenticate as the use administrator

mongo --port 27017 -u "sa" -p "welcome1" --authenticationDatabase "admin"
   
 #or 
   
mongo --port 27017
use admin
db.auth("sa","welcome1")

Create Database user role

    # we show you , how to create normal database user role
        
    #first use SA
    mongo --port 27017  -u "sa" -p "welcome1" --authenticationDatabase "admin"

    #second switch your normal database 
        
    #role : read/readWrite
        
    use borgnix
    db.createUser(
        {
        user:"test1",
        pwd:"welcome1",
        roles:[
            {role: "readWrite",db:"borgnix"}
        ]
        }
    )
   
  show users
      
      
  #if not get any error, congratulations ,
      
  #use test01 login borgnix
  mongo --port 27017 -u "test1" -p "welcome1" --authenticationDatabase "borgnix"
  #or
      
  use borgnix
  db.auth("test1","welcome1")
      
  #you can use other command ,like 'show collections'

It’s all done!