Updating a website script version is one of the most complicated procedure a webmaster encounters when managing a website. How to do a Drupal 7 upgrade? Here is a small guide with various details. Let’s start with basic info : The content of your site does not live in your Drupal installation. It lives in a MySQL database which is managed by your Drupal installation. This database will sit somewhere on your server, as determined by your web host. (As an aside, I never did figure out where Dev Desktop puts the database on your computer at home. It’s a mystery.) Anyhow, the exception to this is that the images within your site do live in your Drupal installation, they are in the sites folder somewhere (depending on your settings), with Drupal keeping records of them in the database.
Note: Earlier, there used to be a migrate_plus module in Drupal 8 core which contained all the pieces of migrate functionality that wasn’t able to make it in the Drupal 7 core. It contained all the plugins for the support of XML, CSV and JSON data sources along with the support for databases like MS SQL or Oracle. This module has now been split into different modules, namely migrate_plus, migrate_tools and migrate_source_csv. Though not yet perfect, the upgrade procedure in Drupal has come quite a long way. As you can see in this tutorial, the upgrade process is now very streamlined and is an integral part of the Drupal Core. If you liked this blog post, then give a read to another blog post by us on, How To Update Drupal 8 Core.
If you’re migrating from a previous version of Drupal, start with our Preparing for a Drupal-to-Drupal Migration tutorial. From there you’ll learn how to perform a basic update using either the built in UI or the contributed Drush commands, as well as some common best practices to help things go as smoothly as possible. If you’re looking to customize your Drupal-to-Drupal migration a bit, continue through the tutorials on writing custom migrations, and then we’ll go in-depth on how to use those skills to tailor the Drupal-to-Drupal update process to your specific use-case.
The steps above outline how to get a distribution minimally installed on an existing site. But you’ll still have a lot of work to do to reconcile your existing site content and structure with what has been created by the distribution. Here are a few tips to get you started–but you should begin with the assumption that there will be lots more you’ll discover and need to fix. Blocks and contexts. Many distributions use the Context module to position blocks. Your existing site may use the core Block module for this purpose, may use Context or some other tool, or may use a combination of tools for block placement. With your new distribution’s blocks displaying as well as those enabled by your existing site, you may get more than you need or want. To address this issue, selectively disable blocks left over from your existing site. If they were custom blocks, you may wish to delete them.
Download the latest release of the distribution. Download and extract the latest release and copy your existing site’s Drupal 7 version settings.php file and files directory to the sites/default directory in the distribution install. This will point the new site to your existing site database.
There are several tips and best practices to follow to help you prepare for the upgrade. Still, since this is such a complex process, we highly recommend getting members of your development team involved from the beginning, which will help ensure the upgrade goes as smoothly as possible. Upgrading to Drupal 8 is more similar to building a new website than previous Drupal updates were, meaning that you should never perform the upgrade to Drupal 8 on a live site. It’s also strongly recommended that you create a backup of your live site so that if anything goes awry, you can quickly roll the site back to an earlier version while you figure out what the issue is. Read extra details about Migrating from Drupal 7 to Drupal 8.