Manage Users for Cloud Databases

This article describes the user management operations for Cloud Databases that you can perform.

Create users with host parameters

You can create a user in the Cloud Databases section of the Cloud Control Panel by clicking on an existing instance name, Instance Details > Users > Create User.

Create users

When you create a new user, consider the following requirements and limitations:

  • All users have full privileges on the databases assigned to them.
  • User names cannot contain more than 16 characters.
  • There is no character amount restriction for the password.
  • You can assign one or more databases to the user.
  • Upon database creation a user is assigned.

Valid characters for usernames and passwords

The following characters are valid for usernames and passwords:

  • Letters, both uppercase and lowercase, are allowed.
  • Numbers, spaces, and the symbols @, ?, and # are allowed. Spaces are not allowed at the beginning or end of the username or password.
  • The underscore symbol (_) is allowed anywhere in the database name, username, or password.

Limitations on usernames and passwords

The following characters are not allowed when you create usernames or passwords:

  • Single quotation marks
  • Double quotation marks
  • Back quotation marks
  • Semicolons
  • Commas
  • Backslashes
  • Forward slashes
  • Spaces at the beginning or end of the user name or password

Valid characters for host names

The host parameter should be a numeric IPv4 address that describes the host from which the user must connect (such as or the percent sign (%). The percent sign serves as a wildcard to MySQL and means "from anywhere". Users created without a host parameter automatically get this default value, which allows them to connect to the database from any host.

  • Valid host name:
  • Invalid host name:

Modify user accounts

You can perform the following operations to a user by clicking the cog icon next to the username:

  • Edit the username and host
  • Change the user's password.
  • Delete the user
  • Manage database access (grant or revoke access to specific databases)

Manage database access for users

Selecting Manage Database Access in the Actions menu enables you to control user access to each database. To revoke a user's access to a database, click the "-" button next to the database name in the list.

To grant a user access to a database, click Add Access and select the check box next to the appropriate database names.


Users can only be granted or revoked full permissions on a database. To add different permission levels, you must enable the root user as described in the following section.

Set access-level permissions for individual users

You can grant or revoke user universal privileges on a database in the Clound Control Panel. You might need to set specific privileges for a user, such as granting some users read-only access to a specific database. To do this you must enable the root user for your database instance. After the root user is enabled, you can log in to MySQL and manage the access privileges for individual users.

  • Method 1: Trove Command Line Tool, generally referred to as the CLI.

  • Method 2: API. Support for access-level control on Cloud Databases through our Control Panel will be provided in the future.

Enable root user with Trove command-line tool

Install the trove client and then enable the root user for the database instance by using the following command,
where is the ID of the instance:

    $ trove root-enable <instance>

This command generates a password for the root user. Now you have full control for creating and managing user privileges.

In the following example, database instance, MySQLDBInstance01, has a database, DBStaging1, and
a user, DevUser1. You want to set up read-only permissions for DevUser1.

  1. List database instances to get the instance ID:

    $ trove list

  2. Enable the root user on MySQLDBInstance01, with instance ID 23a6481f-f98a-4fcd-b4a9-54d06f6f6e88:

       $ trove root-enable 23a6481f-f98a-4fcd-b4a9-54d06f6f6e88

    A password is generated and returned for the root user.

  3. Log in to MySQL as a root user with the password generated in the preceding step:

       $ mysql -u <root> -h <hostname> -p <password>
  4. In MySQL, set up read permissions for DevUser1 by using the following GRANT statement:

       $ GRANT SELECT on DBStaging1.* to 'DevUser1'@'hostname';


You can reset the root user password by making subsequent calls to enable the root user.

Enable root user with the API

If you want to enable the root user by using the API, follow the examples located in our API documentation.