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INTRODUCTION
------------
This document describes how to:
* Update your Drupal site from one minor 7.x version to another minor 7.x
version; for example, from 7.8 to 7.9, or from 7.6 to 7.10.
* Upgrade your Drupal site's major version from 6.x to 7.x.
First steps and definitions:
* If you are upgrading to Drupal version x.y, then x is known as the major
version number, and y is known as the minor version number. The download
file will be named drupal-x.y.tar.gz (or drupal-x.y.zip).
* 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 http://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
(http://drupal.org/project/drupal).
UPGRADE 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 upgrade process. Do not attempt to do
further upgrades on a site that had update problems.
* Consult one of the support options listed on http://drupal.org/support
More in-depth information on upgrading can be found at http://drupal.org/upgrade
MINOR VERSION UPDATES
---------------------
To update from one minor 7.x version of Drupal to any later 7.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 all old core files and directories, except for the 'sites' directory
and any custom files you added elsewhere.
If you made modifications to files like .htaccess 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 7.x release from http://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 http://drupal.org/files/projects/drupal-x.y.tar.gz
tar -zxvf drupal-x.y.tar.gz
This creates a new directory drupal-x.y/ containing all Drupal files and
directories. Copy the files into your Drupal installation directory:
cp -R drupal-x.y/* drupal-x.y/.htaccess /path/to/your/installation
If you do not have command line access to your server, download the archive
from http://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 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:
$update_free_access = FALSE;
- Change it into:
$update_free_access = TRUE;
- Once the upgrade is done, $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 $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.
MAJOR VERSION UPGRADE
---------------------
To upgrade from a previous major version of Drupal to Drupal 7.x, after
following the instructions in the INTRODUCTION section at the top of this file:
1. Check on the Drupal 7 status of your contributed and custom modules and
themes. See http://drupal.org/node/948216 for information on upgrading
contributed modules and themes. See http://drupal.org/node/895314 for a list
of modules that have been moved into core for Drupal 7, and instructions on
how to update them. See http://drupal.org/update/modules for information on
how to update your custom modules, and http://drupal.org/update/theme for
custom themes.
You may decide at this point that you cannot upgrade your site, because
needed modules or themes are not ready for Drupal 7.
2. Update to the latest available version of Drupal 6.x (if your current version
is Drupal 5.x, you have to upgrade to 6.x first). If you need to update,
download Drupal 6.x and follow the instructions in its UPGRADE.txt. This
document only applies for upgrades from 6.x to 7.x.
3. In addition to updating to the latest available version of Drupal 6.x core,
you must also upgrade all of your contributed modules for Drupal to their
latest Drupal 6.x versions.
4. Log in as user ID 1 (the site maintenance user).
5. Go to Administer > Site configuration > Site maintenance. Select
"Off-line" and save the configuration.
6. Go to Administer > Site building > Themes. Enable "Garland" and select it as
the default theme.
7. Go to Administer > Site building > Modules. Disable all modules that are not
listed under "Core - required" or "Core - optional". It is possible that some
modules cannot be disabled, because others depend on them. Repeat this step
until all non-core modules are disabled.
If you know that you will not re-enable some modules for Drupal 7.x and you
no longer need their data, then you can uninstall them under the Uninstall
tab after disabling them.
8. On the command line or in your FTP client, remove the file
sites/default/default.settings.php
9. Remove all old core files and directories, except for the 'sites' directory
and any custom files you added elsewhere.
If you made modifications to files like .htaccess or robots.txt, you will
need to re-apply them from your backup, after the new files are in place.
10. If you uninstalled any modules, remove them from the sites/all/modules and
other sites/*/modules directories. Leave other modules in place, even though
they are incompatible with Drupal 7.x.
11. Download the latest Drupal 7.x release from http://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 http://drupal.org/files/projects/drupal-x.y.tar.gz
tar -zxvf drupal-x.y.tar.gz
This creates a new directory drupal-x.y/ containing all Drupal files and
directories. Copy the files into your Drupal installation directory:
cp -R drupal-x.y/* drupal-x.y/.htaccess /path/to/your/installation
If you do not have command line access to your server, download the archive
from http://drupal.org using your web browser, extract it, and then use an
FTP client to upload the files to your web root.
12. Re-apply any modifications to files such as .htaccess or robots.txt.
13. Make your settings.php file writeable, so that the update process can
convert it to the format of Drupal 7.x. settings.php is usually located in
sites/default/settings.php
14. 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:
$update_free_access = FALSE;
- Change it into:
$update_free_access = TRUE;
- Once the upgrade is done, $update_free_access must be reverted to FALSE.
15. Backup your database after the core upgrade has run.
16. Replace and update your non-core modules and themes, following the
procedures at http://drupal.org/node/948216
17. Go to Administration > Reports > Status report. Verify that everything is
working as expected.
18. Ensure that $update_free_access is FALSE in settings.php.
19. Go to Administration > Configuration > Development > Maintenance mode.
Disable the "Put site into maintenance mode" checkbox and save the
configuration.
To get started with Drupal 7 administration, visit
http://drupal.org/getting-started/7/admin