How To Create User Accounts Using Mysql Create User Statement

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Limiting access privileges & managing user credentials in MySQL requires a great deal of repetitive & manual effort, especially if you have dozens (or even hundreds) of MySQL instances across multiple servers. Admins need ways to manage MySQL database access with consistency và efficiency.

 

In this tutorial, we’ll walk through the most common MySQL commands and management techniques, including:

How lớn create users within a MySQL databaseHow to grant và revoke user permissions within the database management system và to the underlying dataHow khổng lồ use a centralized interface khổng lồ provision user access in MySQL

This tutorial focuses on a self-managed MySQL environment where you have root level database access. While many of the commands below may work in a hosted environment (such as AWS RDS or Google’s Cloud SQL), there may be restrictions on the commands you can run and how you manage user access in such an environment.

Create MySQL databases và users

Once you have MySQL installed on the server(s) that will host your MySQL environment, you need to lớn create a database & additional user accounts. In order to run the following commands, log into the MySQL instance with the MySQL root account.

Create a MySQL database

To create a database called `bepgasvuson.vn`, type the following into the MySQL command line:

code-blockmysql> CREATE DATABASE bepgasvuson.vn;/code-blockIf the database does not already have a quality name for the MySQL instance, MySQL will issue an error message with error code 1007. địa chỉ cửa hàng IF NOT EXISTS to the command lớn prevent this error with the code below:

code-blockmysql> CREATE DATABASE IF NOT EXISTS bepgasvuson.vn;/code-block

Delete a MySQL database

To delete a database called `bepgasvuson.vn`, type the following command into your MySQL command line:

code-blockmysql> DROP DATABASE bepgasvuson.vn;/code-block

Note: This command will permanently delete your database và its associated data. The MySQL command line interface will not prompt you to confirm the action, so use this command with care.

Create a new MySQL user account

MySQL defines users with a username & the hostname or IP address that they're using to lớn access the MySQL instance. Khổng lồ create a new user in MySQL, specify the username, the hostname the user can use lớn access the database management system, và a secure password:

code-blockmysql> CREATE USER ‘local_user’
’localhost’ IDENTIFIED BY ‘password’;/code-block

This command will allow the user with username local_user lớn access the MySQL instance from the local machine (localhost) & prevent the user from accessing it directly from any other machine. Alternatively, you can use a wildcard character (%) in the host definition to lớn grant access to theMySQL instance for a user:

code-blockmysql> CREATE USER ‘subnet_user’
'10.0.%' IDENTIFIED BY ‘password’;/code-block

In the above example, the `10.0.%` specifies that the user can access the MySQL instance from any client that has an IP address beginning with `10.0.`. You may use the wild card at any level of the IP address in the host definition.

To view all users in your MySQL instance, use the SELECT command:

code-blockmysql> SELECT * FROM mysql.user;/code-block

MySQL user account management

Without privileges, a newly created user trương mục can connect lớn the MySQL instance but cannot access any data or perform any actions. Let’s look at MySQL privileges more closely:

Understanding privileges in MySQL

In MySQL, a privilege is a right to perform an action on a database that must be granted to users. This effectively defines the access màn chơi that a user has on a database & what they can bởi vì within it. We can organize these privileges by scope into levels:


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Global privileges apply khổng lồ all databases on the server. Administrative privileges fall into the global group because they enable a user khổng lồ manage operations of the MySQL server & aren't specific khổng lồ a particular database.‍Database privileges apply to specific databases in your MySQL instance and all of the objects within those databases (e.g. Tables, columns, and views). You can also grant database privileges globally. ‍Proxy privileges allow a user lớn act as if they have the privileges granted to another user.‍Privileges for database objects (tables, columns, stored routines, views, etc.) can apply lớn all objects of one type within a particular database or to specific objects, such as a certain table or view. You can also grant database object privileges globally.

Information about MySQL privileges are stored in grant tables in the `mysql` database within your MySQL instance, as follows:



Some common privileges include:

`ALL PRIVILEGES`: The user is granted all privileges except GRANT OPTION và PROXY.`ALTER`: The user can change the structure of a table or database.`CREATE`: The user can create new databases và tables.`DELETE`: The user can delete rows in a table.`INSERT`: The user can add rows to a table.`SELECT`: The user can read rows from a table.`UPDATE`: The user can update rows in a table.

Grant permissions to a MySQL user account

The GRANT statement allows you lớn set MySQL access permissions, using the following syntax:

code-blockmysql> GRANT privilege ON privilege_level to lớn account_name;/code-block

Type the following lớn grant `SELECT` and `INSERT` privileges khổng lồ a local user on the `bepgasvuson.vn` database:

code-blockmysql> GRANT SELECT, INSERT ON bepgasvuson.vn.* to lớn ‘local_user’
’localhost’;/code-block

To create a user with the same privileges as the root user, use the following command, which grants global privileges lớn the user Janet connecting via localhost:

code-blockmysql> GRANT ALL ON *.* to lớn 'janet'
'localhost' WITH GRANT OPTION;/code-block

The WITH GRANT OPTION clause allows the user to lớn grant the privileges they have lớn other users.

Revoke permissions from a MySQL user account

To remove privileges, use the REVOKE command, which uses syntax similar khổng lồ the GRANT command. For example, if you wanted lớn revoke `SELECT` and `INSERT` privileges from a local user on the `bepgasvuson.vn` database, type the following:

code-blockmysql> REVOKE SELECT, INSERT ON bepgasvuson.vn.* FROM ‘local_user’
’localhost’;/code-block

If the user does not actually have the privilege in question, this command will not affect any of their privileges.

Change a MySQL user tài khoản password

The syntax khổng lồ change a user password depends on your version of MySQL. Khổng lồ find out the MySQL version you are running, use the command:

code-blockmysql> SELECT version();/code-block

To change a password for MySQL 5.76 or higher, use this command:

code-blockmysql> ALTER USER 'local_user'
'localhost' IDENTIFIED BY 'new_password';/code-block

For older versions of MySQL, use this command instead:

code-blockmysql>SET PASSWORD FOR 'local_user'
'localhost' = PASSWORD('new_password');/code-block

Delete MySQL users

To delete a MySQL user, use the DROP command:

code-blockmysql> DROP USER 'local_user'
'localhost';/code-block

Display MySQL user account privileges

To view the privileges of a MySQL user, use the `SHOW GRANTS` command:

code-blockmysql> SHOW GRANTS FOR ‘local_user‘
‘localhost‘;/code-block

Determining if privileges are correct

Occasionally, admins need to đánh giá user access khổng lồ different databases, tables, views, or columns. In addition to lớn checking which grants a user has, you can also look at the privileges that are phối on a specific table or column.

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For example, to check the privileges granted on a table named `my_table`, use the following command:

code-blockmysql> SELECT * FROM ‘INFORMATION_SCHEMA’.’TABLE_PRIVILEGES’ WHERE TABLE_NAME=’my_table’;/code-block

Similarly, to lớn look at the column privileges:

code-blockmysql> SELECT * FROM ‘INFORMATION_SCHEMA’.’COLUMN_PRIVILEGES’ WHERE TABLE_NAME=’my_table’;/code-block

Use the SHOW GRANTS command to lớn display all privileges granted khổng lồ a specific user. If you don't specify a user, the privileges for the current user will be displayed.

code-blockmysql> SHOW GRANTS;/code-block

For a specific user, use:

code-blockmysql> SHOW GRANTS FOR 'local_user'
'localhost';/code-block

This command is useful for database auditing. For example, an admin could use it to audit if a user has access lớn more objects than they should.

In order lớn show permissions for the user via any host, not just localhost, you’ll need khổng lồ run a few commands:

code-blockmysql> SELECT CONCAT('SHOW GRANTS FOR''',user,'''
''',host,''';') FROM mysql.user WHERE user=’local_user’;/code-block

This will display all of the SHOW GRANTS commands the user can run, one for each host the user has permission to lớn access the database from. Copy each command và run it to see all the privileges the user has in the MySQL instance.

Effectively managing your MySQL databases and user accounts

Once you phối up databases, users, & permissions, consider what the daily management of your MySQL databases, user accounts, & privileges look like. Developers, business users, contractors, vendors, & more all need access. How will you manage database credentials as the infrastructure grows? How will you ensure each user has granular access and only performs certain tasks and nothing more?

A control plane simplifies provisioning access khổng lồ MySQL databases và reduces strain on admins in several ways:

Centralized authentication for everyone in the organization. Regardless of the user type or destination database, bepgasvuson.vn eliminates the need khổng lồ manually manage authentication credentials for individual users. bepgasvuson.vn integrates directly with your identity provider using OIDC protocols to lớn handle authentication. View & modify access privileges from one place. The bepgasvuson.vn admin interface provides a role-based system for managing permissions. In the Admin UI, simply drag and drop users lớn the appropriate roles và their permissions automatically update. Infrastructure administrators can onboard users, view & modify permissions, and revoke access with ease.Auditing of all actions against all hosts. The bepgasvuson.vn proxy logs all actions — queries, authentications requests, changes to permissions, & more — so you can easily understand who did what, when, và in what order. You can also configure log storage to your specifications with options for encryption, streaming to any log aggregator, and retaining logs locally.

Setting up a control plane for your MySQL databases

The manual work associated with MySQL trương mục management frustrates many admins. bepgasvuson.vn automates và consolidates access control so that MySQL administrators can efficiently manage user privileges through a control plane. bepgasvuson.vn integrates with any Single Sign-On (SSO) provider & connects to lớn your infrastructure wherever it resides, whether on-prem or in the cloud.

Try bepgasvuson.vn to see how a centralized control plane can help you efficiently and securely manage your MySQL databases.

To learn more on how bepgasvuson.vn helps companies with managing permissions, make sure to check out our Managing Permissions Use Case.

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