Mongodb Study Notes 05 and mongodb Study Notes

Mongodb Study Notes 05 and mongodb Study Notes
Enable authentication

Mongod does not have the permission to start by default. You need to specify-auth to start, or set security. authorization to "enabled" in the configuration file"

Create user

Db. createUser (user, writeConcern)

• Document http://docs.mongodb.org/manual/reference/method/db.createUser/#db.createUser

User format

{ user: "<name>",  pwd: "<cleartext password>",  customData: { <any information> },  roles: [    { role: "<role>", db: "<database>" } | "<role>",    ...  ]}

WriteConcern:

For example, {w: "majority", j: true, wtimeout: 5000}

• W option: values allowed are 1, 0, greater than 1, "majority", and ",;
• J option: Make sure that the mongod instance writes data to the journal (log) on the disk. This ensures that data is not lost when it is disabled outside mongd. Set true to enable.
• Wtimeout: specifies a time limit, in milliseconds. Wtimeout is applicable only when the value of w is greater than 1.

Built-In Roles (built-in role ):

• Database User Roles: read and readWrite;
• Database management roles: dbAdmin, dbOwner, and userAdmin;
• Cluster management roles: clusterAdmin, clusterManager, clusterMonitor, and hostManager;
• Backup and recovery roles: backup and restore;
• All Database roles: readAnyDatabase, readWriteAnyDatabase, userAdminAnyDatabase, and dbAdminAnyDatabase
• Super User role: root
  // There are also several roles that indirectly or directly provide system superuser access (dbOwner, userAdmin, userAdminAnyDatabase)
• Internal role :__ system

CreatUser example

Create a super Administrator

use admindb.createUser({    user:"username",    pwd:"password",    roles:["root"]})

Create an accountAdmin01 user in the products database and have the readWrite permission. You have the permissions of clusterAdmin and readAnyDatabase on the admin database.

use productsdb.createUser( { "user" : "accountAdmin01",                 "pwd": "cleartext password",                 "customData" : { employeeId: 12345 },                 "roles" : [ { role: "clusterAdmin", db: "admin" },                             { role: "readAnyDatabase", db: "admin" },                             "readWrite"                             ] },               { w: "majority" , wtimeout: 5000 } )

Login

use collectionNamedb.auth("username",'password")

View users

show users

Delete a user

db.dropUser("username")

Change User Password

db.changeUserPassword("username","password")

Update user

db.createUser(user, writeConcern)

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