MongoDB Learning Notes (ii)

MONGO Command and Configuration
1. Startup items

1 --DBPath directory of the specified database 2 --Port ports default is 270173 --fork to boot in the background daemon way 4 --logpath developing log file output path 5 --config Specify a profile 6 --auth start the database in a secure manner  7 --rest will start a help page

2. Close the database

Db.shutdownserver ();

3. Import and Export

-Export Mongoexport
-D Specify the exported database
-C set up the exported collection
-O Exported file path
-Q for filtering

mongoexport-d local-c Person-o Bak.json

　　

-Import Mongoimport

mongoimport-d local--collections person--file Bak.json

-Import the entire library

Mongorestore--directoryperdb Bak.dmp

4. Lock Write

Db.runcommand ({fstnc:1,lock:1});

5. Unlocking

Db.fsyncunlock (); Lock and write when backing up, and unlock after backup to ensure data integrity

6. Adding roles

Db.adduser ({' Chuhan ': ' 123 '}); Deprecated does not recommend using Db.createuser ({User: ' Chuhan ', pwd: ' 123 ', Roles:[{role: ' Useradmin ', db: ' Admin '}]})

7. Show all the characters

Db.showroles

　　

8. Modify User Password

Db.changeuserpassword (' Chuhan ', ' 123 ');

9. Authorized Login

Db.auth (' Chuhan ', ' 123 '); If 1 is displayed, it is successful, otherwise the authorization fails

10. View User Permissions

Db.runcommand ({usersinfo: ' Chuhan ', showprivileges:true});

11. Modify User Permissions

Db.runcommand ({updateUser: ' Chuhan ', pwd: ' 789 ', Customdata:{title: ' manager ', Age:12}})

　　

MongoDB Learning Notes (ii)