Category Archives: MySQL

MySQL-related

Munin Plugin for MySQL Performance Hit and Miss Rates

Posted on October 3, 2011 by Administrator

Munin is an Open Source tool for monitoring servers. Here’s a plugin I wrote to calculate and display the performance of various MySQL read and write caches. You can download the plugin source here. Note that hit rates are seldom … Continue reading →

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Netflix and Cloud IT

Posted on October 2, 2011 by Administrator

I recently did some technical consulting for Netflix. I can say that they are really, truly committed to cloud IT, per their public pronouncements. Most large companies are still just dipping a toe in the water, so it’s significant that … Continue reading →

Posted in Business, Cloud, i18n, Linux, MySQL, Open Source, Oracle, Perl, Storage, Tech, Toys | Leave a comment

Checking MySQL Hosts in Parallel with Perl Threads

Posted on September 26, 2011 by Administrator

Here’s an example of using Perl ithreads to do monitoring of multiple MySQL hosts in parallel. Note that with older versions of Perl, you can use fork() or the forks.pm module instead of threads. #!/usr/bin/perl use threads; use 5.8.1; use … Continue reading →

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Stupid Apache HTTPD 2 Tricks

Posted on August 21, 2011 by Administrator

I recently updated a linux web server to CentOS 6 with all new software packages. I noticed some disturbing things related to Apache HTTPD: many apps are adding .conf files to /etc/httpd/conf.d, which was intended for virtualhosts. So guess what … Continue reading →

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OSCON 2011, Portland

Posted on July 30, 2011 by Administrator

Once again, the O’Reilly Open Source Conference (OSCON) was held in Portland, Oregon. It was held in parallel at the Oregon Convention Center with the O’Reilly OSdata and OSjava Conferences at the beginning of the week, and then later a … Continue reading →

Posted in Business, Conferences, i18n, Japanese, Linux, MySQL, Open Source, Oracle, OSCON, Perl, Photography, Psychology, Storage, Tech, Toys, Travel, User Groups | Leave a comment