Drupal 11 requires MySQL 8.0 or later. However, many of the Cloud Platform environments are still not upgraded to MySQL 8.0. 

On such environments, if you want to install a new Drupal 11 application or upgrade an existing application from Drupal 10 to Drupal 11, you can use the MySQL 8.0 to 5.7 backport database driver module.

Enabling the MySQL 8.0 to 5.7 backport database driver module

Use this procedure to:

• Enable the module in Drupal 11.
• Enable the module in Drupal 10 to upgrade an existing application from Drupal 10 to Drupal 11.

Prerequisites

Before enabling the module, ensure that you have:

• Cloud Platform account
• PHP 8.3 installed on your environment

Installing the MySQL backport module

To install the MySQL 8.0 to 5.7 backport database driver module:

1. Add the MySQL 8.0 to 5.7 backport database driver module by running the following command:

   copy

   composer require 'drupal/mysql57:^1.0'

2. In the settings.php file, add the following line before the Acquia require line  outside any if statements that conditionally load the settings on Acquia environments:

   copy

   require DRUPAL_ROOT . '/modules/contrib/mysql57/settings.inc';
   
   // Example Acquia Cloud Require Line
   if (file_exists('/var/www/site-php/application/application-settings.inc')) {
     require '/var/www/site-php/application/applcatopm-settings.inc';
   }
   

   Important

   For Site Factory, acsf-init overwrites direct edits to the settings.php file. To persist the backport driver, you must add the require statement to a script in the factory-hooks/pre-settings-php/ directory.

3. In the administrative menu, click Extend and search for MySQL 5.7.

   
4. Select the MySQL 5.7 checkbox and click Install.
5. In the Reports section, navigate to Status report.

6. Verify that the system does not report any error for the database system version.

   

Uninstalling the MySQL 8.0 to 5.7 backport database driver module

After your Cloud Platform environment is upgraded to MySQL 8, you can uninstall the MySQL Backport module with the following steps:

1. From the settings.php file, remove  the following line:

   copy

   require DRUPAL_ROOT . '/modules/contrib/mysql57/settings.inc';

2. In the administrative menu, click Extend and select  Uninstall.

   The system displays a list of modules that you can uninstall.

3. Select the MySQL 5.7 checkbox and click Uninstall.

4. Remove the module from your codebase by running the following command:

   copy

   composer remove 'drupal/mysql57'

Posting questions or comments for the MySQL Backport module

To post module-related questions or comments for its maintainer or to report bugs or other issues, file an issue in the issue queue.

Frequently asked questions

MySQL 8.0 to 5.7 backport database driver for upgrading to Drupal 11

Frequently asked questions