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.

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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.

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Technology Insights

Ubuntu Linux Apache Error: [notice] child pid XXXX exit signal Segmentation fault (11)

I received the below error when troubleshooting an issue reported to me by a client regarding one of their intranet web sites not working properly. After some poking around I noticed that there were numerous segmentation faults being reported in the Apache error logs. I had previously set up the server to dump core files when there were segmentation faults within Apache so troubleshooting the error was fairly easy. It ended up being a connection issue with an AS400 that was down over the weekend at the company and I was able to verify this using the below information.

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Technology Insights

Restart Paste Master without restarting Mac OS X

I use Paste Master as an advanced clipboard manager. It allows me to keep up to 90 items in my clipboard and also allows me to paste them unformatted so I don’t have to copy them to an ASCII text editor first. It would not come up one day and wanted to restart it without the OS (operating system). Under System Preferences, uncheck and check “Enable Paste Master” and that will restart it. Since it is a checkbox, it might appear to only take effect when the OS restart, but it takes immediate effect.

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