I ran into a small problem upgrading PHP from 5.3.5 to 5.3.10 on a MediaTemple CentOS VPS today. The upgrade completed without any errors, but when I reloaded the site I got a “500 Internal Server Error” message. It was the stock installation, so I’m not sure which module it was using or what repository… [more]
All posts tagged Apache
TJ Stein gave a really good presentation at WordCamp Chicago 2011 about scaling and performance issues with WordPress installations. He focuses a lot on using ngnix instead of Apache, but also covers PHP object caching, Varnish, CDNs, benchmarking, etc. It’s a good overview of current practices, but there’s also a lot of specific tips throughout.
Mark Maunder benchmarked several performance tuning measures with a WordPress installation on a VPS server to show which are most effective. The biggest improvements were from installing PHP-APC , setting up Nginx to proxy concurrent connections for Apache, and using MySQL’s query cache.
Apache’s default settings assume it’s running under a dedicated box with at least 2GB of RAM, so they don’t perform very well in a VPS that may only have 500MB. I recently made some tweaks to several VPS’s that reduced memory usage by 300-400MB without degrading performance. Apache Performance Tuning is a good article that explains a lot… [more]
Jason Diehl describes the right way to setup directory permissions on a Linux box running Plesk so that WordPress can automatically create the directories it uses to store uploads. Basically, you need to make sure that PHP’s safe mode is turned off and that wp-content is owned by apache, in the apache group, and chmod’d to 777.
If you’re troubleshooting an htaccess file and aren’t seeing any changes, no matter what you put in the file, make sure that you have permissions to execute the directives you’re using. Check Apache’s conf file to see if AllowOverride None is set for your site or directory. If it is, add the directives that you want to use, or just… [more]
