# User Management

The user management page is used to create and manage database users and set user permissions.

## User List

Go to **Database** > **User** tab to view the user list.

![User List](/images/database/database-user.png)

The list displays the following information:

- **Type**: Database type
- **Username**: Database username
- **Password**: User password (click to copy)
- **Host**: Allowed connection hosts
- **Server**: The database server it belongs to
- **Permissions**: Databases the user has permissions for
- **Comment**: Remarks
- **Status**: User status
- **Update Date**: Last update time
- **Actions**: Modify, delete

## Create User

1. Click the **Create User** button
2. Fill in the configuration:
    - **Server**: Select database server
    - **Username**: Database username
    - **Password**: User password (strong password recommended)
    - **Host**: Allowed connection host address
    - **Permissions**: Select databases the user can access
3. Click Create

### Host Settings

| Value           | Description                              |
|-----------------|------------------------------------------|
| `localhost`     | Only allow local connections             |
| `127.0.0.1`     | Only allow local IP connections          |
| `%`             | Allow connections from any host          |
| `192.168.1.%`   | Allow connections from specified subnet  |
| `192.168.1.100` | Only allow connections from specified IP |

::: warning Security Notice
Production environments are not recommended to use `%` to allow connections from any host. Should be restricted to specific IP addresses or subnets.
:::

## Modify User

Click the **Modify** button on the right side of the user to:

- Modify password
- Modify allowed connection hosts
- Modify database permissions

## Delete User

Click the **Delete** button on the right side of the user to delete the user.

::: warning Note
After deleting a user, applications using that user to connect to the database will not work properly.
:::

## Permission Explanation

### Percona/MySQL/MariaDB Permissions

When creating a user, you can select databases to grant permissions:

- Select specific databases: User can only access selected databases
- No selection: User has no database permissions

### PostgreSQL Permissions

PostgreSQL permission management is more fine-grained. You can set different permissions for databases, schemas, tables, etc. The panel only supports granting database access permissions.

## Password Security

- Use strong passwords containing uppercase and lowercase letters, numbers, and special characters
- Password length recommended 16 characters or more
- Use different database users for different applications
- Change passwords regularly