Technology Errors

ImportError: No module named django.core.management, Django Error After Upgrade

On one of my servers I run a couple sites via Django and recently when I upgraded the server it broke the Django sites that were running via FastCGI. After some investigation I was able to find the issue which happened to be a basic conflict between python2.4 which is the default python version on CentOS Linux and python2.6 which I installed to run via python26 instead of python. This way I can change the environment of any site that needs it to Python version 2.6 without much hassle. Below I describe the error in detail as well as what resolved the issue.

Technology Errors

postfix/smtpd[XXXXX]: fatal: unsupported dictionary type: mysql, Postfix maillog Errors

I recently updated a development server running CentOS and ran into various minor issues including one regarding postfix being compiled with MySQL support. The development server runs ISPConfig for various virtual hosts and after upgrading all the packages on the server which included Postfix I noticed errors in the maillog. Below I describe what the error was in more detail as well as how it can easily be resolved.

Technology Errors

WordPress database error Duplicate entry X for key yarpp_content for query UPDATE wp_posts SET, MySQL Error

Today I was adding a note to a WordPress article I had written a couple of days ago and it appeared to POST without issue after I clicked the Update button in the WordPress admin. I went to the front-end of the site to verify the new content formatted correctly and to my surprise it wasn’t displaying so I figured I must have left a HTML tag or something open since I didn’t get any errors within the WordPress admin when I clicked the Update button for the Post. After further review the content didn’t exist and it appeared that the article had not posted the update at all since there were zero revisions from today. Fixing the problem is easy by using the below information that describes where I located the error, the error itself, and how to resolve it by issuing a single MySQL command.

Technology Errors

Failed loading /usr/sbin/ioncube_loader_lin_5.2.so: /usr/sbin/ioncube_loader_lin_5.2.so: undefined symbol: zend_error_noreturn

After upgrading PHP recently on a CentOS Linux server from PHP 5.2.X to PHP 5.3.X I ran into numerous minor issues. One of the issues was with a web application that requires the ionCube PHP Encoder libraries to function properly. After upgrading PHP I noticed some errors in the Apache error logs including the ionCube Apache module that was failing to load. Below I display the entire error from the Apache error_log file and how to easily resolve the issue by installing a single package via the Yum Package Manager.