145 lines
6 KiB
Plaintext
145 lines
6 KiB
Plaintext
INTRODUCTION
|
|
------------
|
|
This document describes how to update your Drupal site between 8.x.x minor and
|
|
patch versions; for example, from 8.1.2 to 8.1.3, or from 8.3.5 to 8.4.0.
|
|
|
|
To upgrade from a previous major version (for example, Drupal 6 or 7), the
|
|
process involves importing site configuration and content from your old site
|
|
into a new Drupal 8 site. The tools and process are currently experimental,
|
|
rather than being fully supported, so be sure to test in a development
|
|
environment. You will need to use the core Migrate Drupal UI module which
|
|
provides a user interface for the Migrate and Migrate Drupal modules included
|
|
in core. See https://www.drupal.org/upgrade/migrate for details, and
|
|
https://www.drupal.org/node/2167633 for known issues.
|
|
|
|
First steps and definitions:
|
|
|
|
* If you are upgrading to Drupal version x.y.z, then x is known as the major
|
|
version number, y is known as the minor version number, and z is known as
|
|
the patch version number. The download file will be named
|
|
drupal-x.y.z.tar.gz (or drupal-x.y.z.zip). Previous Drupal versions used
|
|
only x.y (MAJOR.MINOR) to designate their versions.
|
|
|
|
* All directories mentioned in this document are relative to the directory of
|
|
your Drupal installation.
|
|
|
|
* Make a full backup of all files, directories, and your database(s) before
|
|
starting, and save it outside your Drupal installation directory.
|
|
Instructions may be found at
|
|
https://www.drupal.org/upgrade/backing-up-the-db
|
|
|
|
* It is wise to try an update or upgrade on a test copy of your site before
|
|
applying it to your live site. Even minor updates can cause your site's
|
|
behavior to change.
|
|
|
|
* Each new release of Drupal has release notes, which explain the changes made
|
|
since the previous version and any special instructions needed to update or
|
|
upgrade to the new version. You can find a link to the release notes for the
|
|
version you are upgrading or updating to on the Drupal project page
|
|
(https://www.drupal.org/project/drupal).
|
|
|
|
UPDATE PROBLEMS
|
|
----------------
|
|
If you encounter errors during this process,
|
|
|
|
* Note any error messages you see.
|
|
|
|
* Restore your site to its previous state, using the file and database backups
|
|
you created before you started the update process. Do not attempt to do
|
|
further updates on a site that had update problems.
|
|
|
|
* Consult one of the support options listed on https://www.drupal.org/support
|
|
|
|
More in-depth information on updating and upgrading can be found at
|
|
https://www.drupal.org/upgrade
|
|
|
|
MINOR AND PATCH VERSION UPDATES
|
|
-------------------------------
|
|
To update from one 8.x.x version of Drupal to any later 8.x.x version, after
|
|
following the instructions in the INTRODUCTION section at the top of this file:
|
|
|
|
1. Log in as a user with the permission "Administer software updates".
|
|
|
|
2. Go to Administration > Configuration > Development > Maintenance mode.
|
|
Enable the "Put site into maintenance mode" checkbox and save the
|
|
configuration.
|
|
|
|
3. Remove the 'core' and 'vendor' directories. Also remove all of the files
|
|
in the top-level directory, except any that you added manually.
|
|
|
|
If you made modifications to files like .htaccess, composer.json, or
|
|
robots.txt you will need to re-apply them from your backup, after the new
|
|
files are in place.
|
|
|
|
Sometimes an update includes changes to default.settings.php (this will be
|
|
noted in the release notes). If that's the case, follow these steps:
|
|
|
|
- Locate your settings.php file in the /sites/* directory. (Typically
|
|
sites/default.)
|
|
|
|
- Make a backup copy of your settings.php file, with a different file name.
|
|
|
|
- Make a copy of the new default.settings.php file, and name the copy
|
|
settings.php (overwriting your previous settings.php file).
|
|
|
|
- Copy the custom and site-specific entries from the backup you made into the
|
|
new settings.php file. You will definitely need the lines giving the
|
|
database information, and you will also want to copy in any other
|
|
customizations you have added.
|
|
|
|
You can find the release notes for your version at
|
|
https://www.drupal.org/project/drupal. At bottom of the project page under
|
|
"Downloads" use the link for your version of Drupal to view the release
|
|
notes. If your version is not listed, use the 'View all releases' link. From
|
|
this page you can scroll down or use the filter to find your version and its
|
|
release notes.
|
|
|
|
4. Download the latest Drupal 8.x.x release from https://www.drupal.org to a
|
|
directory outside of your web root. Extract the archive and copy the files
|
|
into your Drupal directory.
|
|
|
|
On a typical Unix/Linux command line, use the following commands to download
|
|
and extract:
|
|
|
|
wget https://www.drupal.org/files/projects/drupal-x.y.z.tar.gz
|
|
tar -zxvf drupal-x.y.z.tar.gz
|
|
|
|
This creates a new directory drupal-x.y.z/ containing all Drupal files and
|
|
directories. Copy the files into your Drupal installation directory:
|
|
|
|
cp -R drupal-x.y.z/* drupal-x.y.z/.htaccess /path/to/your/installation
|
|
|
|
If you do not have command line access to your server, download the archive
|
|
from https://www.drupal.org using your web browser, extract it, and then use
|
|
an FTP client to upload the files to your web root.
|
|
|
|
5. Re-apply any modifications to files such as .htaccess, composer.json, or
|
|
robots.txt.
|
|
|
|
6. Run update.php by visiting http://www.example.com/update.php (replace
|
|
www.example.com with your domain name). This will update the core database
|
|
tables.
|
|
|
|
If you are unable to access update.php do the following:
|
|
|
|
- Open settings.php with a text editor.
|
|
|
|
- Find the line that says:
|
|
$settings['update_free_access'] = FALSE;
|
|
|
|
- Change it into:
|
|
$settings['update_free_access'] = TRUE;
|
|
|
|
- Once the update is done, $settings['update_free_access'] must be reverted
|
|
to FALSE.
|
|
|
|
7. Go to Administration > Reports > Status report. Verify that everything is
|
|
working as expected.
|
|
|
|
8. Ensure that $settings['update_free_access'] is FALSE in settings.php.
|
|
|
|
9. Go to Administration > Configuration > Development > Maintenance mode.
|
|
Disable the "Put site into maintenance mode" checkbox and save the
|
|
configuration.
|
|
|