Drupal 7, 8 and 9 Migration:
Upgrading from Drupal 7 to Drupal 8 →
If you’re on Drupal 7, the best way is to migrate incrementally. Let’s explore the steps to transforming your site to Drupal 8:
Before starting your migration process, it’s recommended to take a backup of the site first.
Download the latest version of Drupal 8 from the drupal.org. You can also use the composer for Drupal 8 installation – dependencies with Composer.
Install & configure the Drupal 8 site on your local system as a destination site for the upgrade process.
Make sure the Migrate; Migrate Drupal & Migrate Drupal UI is enabled in the Drupal 8 website. Navigate through the “Extend” tab of your site and check all these modules are available in the core.
Once checked, click the install button.
Now, it’s time to upgrade to Drupal 8. Open your website address and append / upgradein the address bar (www.examplesite.com/upgrade) and follow the instructions. Then click the ‘Continue’ button.
When you click Continue, the below screen opens and asks you to fill the source database details.
Once the source database credentials are validated, the upgrade review page will open on the Migrate UI, which displays the upgrade status summary of all the installed modules on your old site.
It is important to review the modules, which will not be upgraded. Also, check if your Drupal 8 site will be able to work without the module.
Finally, click the ‘Perform Upgrade’ button.
Don’t proceed with the actual upgrade without installing missing modules of Drupal 8.
Based on the size & types of content/configuration on your source site, the upgrade process may take a long time to complete. Once it’s finished, you’re directed to the front page of the website with the message summarizing the result of your upgrade.
UPGRADING FROM DRUPAL 8 TO DRUPAL 9
The first step to be prepared for Drupal 9 Migration is detecting and removing deprecated code:
- You can run a command-line utility – drupal-check to check the modules and detect the deprecated code instances
- You can use the GUI tool called Drupal 9 Readiness in Drupal 8.8 version – it provides steps as preparations for Drupal 9
- You can also set-up Testing infrastructure to analyze and find deprecated code
Making necessary updates are prerequisite for Drupal 9 upgrade:
- If you find any depreciated code, you can update the code or swap them with search & replace function for the latest version.
Why should you move from Drupal 8 to Drupal 9?
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