Change Your Password and Custom Data
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Overview
Users with appropriate privileges can change their own passwords and
custom data. Custom data
stores
optional user information.
Considerations
To generate a strong password for use in this procedure, you can use the
openssl
utility's rand
command. For example, issue openssl
rand
with the following options to create a base64-encoded string of 48
pseudo-random bytes:
openssl rand -base64 48
Prerequisites
To modify your own password and custom data, you must have privileges
that grant changeOwnPassword
and
changeOwnCustomData
actions respectively on the user's database.
Connect as a user with privileges to manage users and roles.
Connect to the mongod
or mongos
with privileges
to manage users and roles, such as a user with
userAdminAnyDatabase
role. The following procedure uses the
myUserAdmin
created in Enable Access Control.
mongo --port 27017 -u myUserAdmin -p --authenticationDatabase 'admin'
If you do not specify the password to the -p
command-line option, the mongo
shell prompts for the
password.
Create a role with appropriate privileges.
In the admin
database, create
a new
role with changeOwnPassword
and
changeOwnCustomData
.
use admin db.createRole( { role: "changeOwnPasswordCustomDataRole", privileges: [ { resource: { db: "", collection: ""}, actions: [ "changeOwnPassword", "changeOwnCustomData" ] } ], roles: [] } )
Add a user with this role.
In the test
database, create
a new user with
the created "changeOwnPasswordCustomDataRole"
role. For example, the following
operation creates a user with both the built-in role readWrite
and
the user-created "changeOwnPasswordCustomDataRole"
.
Tip
Starting in version 4.2 of the mongo
shell, you can
use the passwordPrompt()
method in conjunction with
various user authentication/management methods/commands to prompt
for the password instead of specifying the password directly in the
method/command call. However, you can still specify the password
directly as you would with earlier versions of the
mongo
shell.
use test db.createUser( { user:"user123", pwd: passwordPrompt(), // or cleartext password roles:[ "readWrite", { role:"changeOwnPasswordCustomDataRole", db:"admin" } ] } )
To grant an existing user the new role, use
db.grantRolesToUser()
.
Procedure
Connect with the appropriate privileges.
Connect to the mongod
or mongos
as a user with
appropriate privileges.
For example, the following operation connects to MongoDB as
user123
created in the Prerequisites
section.
mongo --port 27017 -u user123 --authenticationDatabase 'test' -p
If you do not specify the password to the -p
command-line option, the mongo
shell prompts for the
password.
To check that you have the privileges specified in the
Prerequisites section as well as to see user
information, use the usersInfo
command with the
showPrivileges
option.
Change your password and custom data.
Use the db.updateUser()
method to update the password and
custom data.
For example, the following operation changes the user's password to
KNlZmiaNUp0B
and custom data to { title: "Senior Manager" }
:
Tip
Starting in version 4.2 of the mongo
shell, you can
use the passwordPrompt()
method in conjunction with
various user authentication/management methods/commands to prompt
for the password instead of specifying the password directly in the
method/command call. However, you can still specify the password
directly as you would with earlier versions of the
mongo
shell.
use test db.updateUser( "user123", { pwd: passwordPrompt(), // or cleartext password customData: { title: "Senior Manager" } } )
Enter the password when prompted.