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MongoDB

MongoDB is A scalable, high-performance, open source NoSQL database, used for NoSQL Database Software Labs for High Education . MongoDB is a scalable, high-performance, open source NoSQL database written in C++.

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Prepare​

When referring to this document to use MongoDB, please read and ensure the following points:

  • Login to Websoft9 Console and find or install MongoDB:

    • Go to My Apps listing applications
    • Go to App Store installing target application

  • This application is installed by Websoft9 console.

  • The purpose of this application complies with the SSPL-v1 open source license agreement.

  • Configure the domain name or server security group opens external network ports for application access.

Getting started​

Initial setup​

  1. After completing the installation of MongoDB in the Websoft9 Console, get the applicaiton's Overview and Access information from My Apps

  2. Follow the installation wizard step by step

CLI connection​

  1. Enter the MongoDB container and run the MongoDB Shell command

    $ mongosh admin -u root -p YOURPASSWORD
    MongoDB shell version v5.0.10
    connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
    ...

  2. List the default databases and users

    # List all databases
    show dbs

    # Switch to the admin database and list all users.
    use admin
    show users

Graphical Web​

Websoft9 provides a web-based application to access MongoDB Compass

Commands​

The most commonly used MongoDB commands are listed below for you reference:

Display, create and switch databases.​


> show dbs
admin     0.000GB
config    0.000GB
local     0.000GB

# Create the test database (if not exist)
> use test
switched to db test

# Display current database.
> db
test

# Display all users. 
> show users

# Insert data to database.
> db.test.insert({"name":"company"})
WriteResult({ "nInserted" : 1 })

Delete database.​

> show dbs
admin     0.000GB
config    0.000GB
local     0.000GB
test      0.000GB
websoft9  0.000GB

> use test
switched to db test
> use test
> db.dropDatabase()
{ "dropped" : "test", "ok" : 1 }
> show dbs
admin     0.000GB
config    0.000GB
local     0.000GB
websoft9  0.000GB

Create administrator account.​

> mongo
> use admin
switched to db admin
> db.createUser( { user: "webs_admin", pwd: "websoft9", roles: ["userAdminAnyDatabase"] } )
Successfully added user: { "user" : "webs_admin", "roles" : [ "userAdminAnyDatabase" ] }


# Display accounts.
> show users
{
        "_id" : "admin.webs_admin",
        "user" : "webs_admin",
        "db" : "admin",
        "roles" : [
                {
                        "role" : "userAdminAnyDatabase",
                        "db" : "admin"
                }
        ],
        "mechanisms" : [
                "SCRAM-SHA-1",
                "SCRAM-SHA-256"
        ]
}

Change administrator password.​

> db = db.getSiblingDB('admin')
admin
> db.changeUserPassword("root", "NEWPASSWORD")
> exit

Configuration options​

  • Configuration file (mounted): /etc/mongod.conf

  • Enable public access: Modify the bindIp: 0.0.0.0 field in the configuration file

  • Server command: mongod

  • Client command: mongo

  • Commands: mongod is the server-side management command for MongoDB, while mongo is the client used to access the MongoDB service

  • No authentication access (√): refer to Access Control settings

  • Default database admin: database users with global administrative privileges are stored in the admin database

Administer​

  • Shut down MongoDB access authentication: From the Websoft9 console, select My Apps > Compose > Go to Edit Repository > .env, comment out the environment variable with the prefix MONGO_INITDB_, and rebuild.

  • Forgot administrator password: After disabling MongoDB access authentication, enter the container and run the reset command, then restore the password.

    mongo
    > db = db.getSiblingDB('admin')
    admin
    > db.changeUserPassword(“root”, “NEWPASSWORD”)

  • Backups: Use mongodump and mongorestore for MongoDB backup and recovery. For more details, refer to (MongoDB Backup Methods)

     # Backup
     mongodump --authenticationDatabase admin --username root --password PASSWORD -d DATABASE_NAME -h localhost

     # Recover
     mongorestore --authenticationDatabase admin --username root --password PASSWORD PATH_TO_BACKUP_FILE

Troubleshooting​

MongoDB compass cannot connect?​

Verify that connection parameters such as prefix port, bindIP, and account authentication meet the specified requirements.