Upgrading WordPress from 2.3.3 to 2.5

1. Backup all the relevant wordpress files.

mv blog blog.bkp

2. Backup your MySQL database

mysqldump crucialu_blog > crucialu_blog.sql

3. Upgrade necessary plugins and once done, login to WordPress as admin and deactivate all plugins.

Dashboard ->> Plugins ->> Deactivate All Plugins

4. Download the latest wordpress.

wget http://wordpress.org/latest.tar.gz

5. Untar the file and rename it to /blog

mv wordpress blog

6. Copy the wp-config.php from the backup

cp -p blog.bkp/wp-config.php blog/

7. Take the URL http://www.crucial.com.au/blog/wp-admin/upgrade.php and Click on “Upgrade WordPress”

Click on “Continue” to complete the upgrade.

8. Copy the custom files /folder from backup to the new installation folder

cp -rpf blog.bkp/wp-content/* blog/wp-content/

9. Login to wordpress as admin and Activate the required plugins.

Dashboard ->> Plugins

After upgrade, if you are getting a blank screen while accessing the site, you might have forgotten to copy the themes and templates. Go to step 8 in that case.

Filed under: Uncategorized by — aaron @ 11:40 pm

404 Error when to accessing /wp-admin/admin-ajax.php

When you receive this error:ForbiddenYou don’t have permission to access /wp-admin/admin-ajax.php on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

If you are receiving this error, then its likely you have mod_security installed on your server, and you will need to update your mod_security rules.

Find the following in your mod_security configuration:

Only accept request encodings we know how to handle
# we exclude GET requests from this because some(automated)
# clients supply "text/html" as Content-Type
SecFilterSelective REQUEST_METHOD "!^(GET|HEAD)$" chain
SecFilterSelective HTTP_Content-Type "!(^application/x-www-form-urlencoded$|^multipart/form-data;|^text/xml;)"

Change it to:

# Only accept request encodings we know how to handle
# we exclude GET requests from this because some (automated)
# clients supply “text/html” as Content-Type
SecFilterSelective REQUEST_METHOD “!^(GET|HEAD)$” chain
SecFilterSelective HTTP_Content-Type “!(^application/x-www-form-urlencoded;|^multipart/form-data;|^text/xml;)”

If you don’t have access to mod_security configuration (i.e. you are not the administrator of the server), then you can add the following to a .htaccess file for your site:

<IfModule mod_security.c>
SecFilterInheritance Off
</IfModule>

Filed under: Uncategorized by — aaron @ 4:56 pm