Hướng dẫn cập nhật Drupal 6 Core

Go to Administrator. If you require security upgrades you will see a warning message. Inside the warning message is a link to check for available updates.

You can also check for Available updates under the Reports menu. Running a Status Report is also a good idea. You'll see the status of your entire installation.

Checking Available Updates will tell you your current version, the recommended version and links for downloading what you need. You can go directly from 6.22 to 6.25. You can skip 6.23 completely.

Step 2. Create a duplicate of your current site

Login to Drupal as User ID #1. This user has special privileges, including use of the Backup and Migrate module if you are using it. But to run the upgrade.php script, which we'll do in a later step, you need to be logged in as user ID #1. You can find our more about Drupal User 1 here.

Go to Site Configuration > Site Maintenance. Choose Off-line and click Save Configuration.

Go to Site Building > Modules. Uncheck the contributed modules. Click Save configuration.

Switch to a core theme (for instance, Blue Marine) or any of the ones that originally came with the basic drupal installation.

Step 7. Remove all Drupal files except for the sites folder.

The thing to make sure of here is that the new files do not overwrite anything you've saved from the original version. After you decompress the files, delete the new sites folder so there is no chance of overwriting the one you are upgrading,.

As you can see, I've created a test directory called UPGRADE and I've removed everything but the sites folder. Upload all the new folders and files to the UPGRADE directory, except for one.

NOTE: There are several procedures you could use for file transferring. For example, you could alternately decompress the upgrade file into on the server, delete the sites folder, and then copy the original site folder into the new directory. Either way, you want all your old sites folder and all brand new core files. Don't forget any htaccess or robots.txt files from the original site as well.

The problem with this for beginners, is trying to copy and transfer files in the sites/default directory. The default directory permissions may be 555 and the settings.php file 444, so a copying and saving things there might fail. You need to deal with the permissions in the sites directory. You will need to CHMOD all the folders recursively from sites on down to 755. You will also need to make all the files at least 644 (especially the settings.php file). Change them back when you're done for security.

If you try to visit your test site, by going to your URL you will see that it is offline.

Login to your site's admin by going to http://yourSite.com/user?locallogin. (in my case http://yourSite.com/UPGRADE/user?locallogin. Enter the username and password for User 1.

Once you are logged in, enter http://yoursite.com/update.php (in my case it's /UPGRADE/update.php) You must be logged in as user 1 to begin the upgrade. Otherwise you will get a message telling you how to edit the configuration file to allow the update to proceed.

Click Continue. If you made the backup before you started you don't have to do it again.

Click Update.

The image above shows a successful update response. If you get error messages at this point you need to try to correct them before moving on.

• Return to Administration Pages.
• Go to Site building > Modules.
• Place checks next to all the modules you want to activate.
• Scroll to the bottom of the page and Save.
• Run update.php AGAIN to update the database tables for the modules.

This time you can run update.php from a link on the modules page.

Go to Reports > Available updates. Everything should be green, and your new version number should be visible. If anything needs to be updated you'll spot it here and be able to download the newer version.

Step 15. Give it a test run.

• Go to Site building > Themes.
• Upload or activate a theme.
• Run update.php again.
• Transfer and test any edits or hacks you made to module or themes. Make sure you have the correct .htaccess file and robots.txt file and any others you need.
• Do a thorough final check of the test site.
• After that you're ready to go live.

Go to Administer > Site configuration >Site Maintenance as you did in Step 4. and change the Site status back to Online.
Save the configuration.

If all is going well you are ready to open to the public. Move your newly updated site to your main directory.

TIP: Move or copy your old site to a backup directory instead of deleting it. It makes for an easy recovery if something breaks.