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APC INFO Monitor

How to Configure APC Cache on Virtual Servers with PHP running under FCGId

…tc/httpd/conf.d/php.conf Remove any php_memory_limit lines in httpd.conf’s virtual hosts section. restart apache do some performance testing and raise your server and thread limits to sane levels in httpd.conf If possible, you may wish to run Apache with Worker MPM instead of Prefork MPM. More information about Apache Worker MPM vs. Prefork MPM » Installation Suggestions and […]

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Install phpMyAdmin with SSL on CentOS, Amazon Linux, RedHat (Apache or NginX)

…hosting server, or only allow hosts you require: localhost, your local workstation, etc.) For a hosting server with open access, you should have a login failure daemon to block offending IP addresses with multiple failed HTTP logins. ConfigServer Firewall works well, and has modules for cPanel and Webmin. OSSEC is another reactive IPTables firewall with […]

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Tuning Apache and MySQL for Best Performance in a Shared Virtual Hosting Environment

…rce probes, port flooding, DDOS, etc. If you have 600 virtual hosts running on a server, it is very likely that the server is experiencing constant malicious exploits, especially if you are also running email servers on the same IP addresses. If your host does not support ConfigServer (e.g. Amazon AWS and some VPS may […]

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Apache and MySql Performance Tuning for High Traffic WordPress Website on Cpanel

…wer. Cpanel’s efault Apache and MySQL configurations were limiting the number of concurrent user sessions the server could handle. Changed PHP to run as FastCGI (fcgid) and recompiled Apache to better handle the needs of a high traffic WordPress site. Configured a large MySQL table and query cache based on performance and load testing. Configured […]

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WordPress with W3 Total Cache on Nginx with APC (Virtualmin)

Virtualmin now includes support for Nginx web server. I deploy many WordPress sites with W3 Total Cache and APC Alternative PHP Cache, so I was very interested to see how Nginx performance compares to Apache for WordPress, and whether APC and W3TC would play nice with Nginx. I prefer to install WordPress in public_html/wordpress for […]

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Chris Gilligan Web Developer, Information Architect, Web Server Administrator, Media Producer web • video • print I design and produce information and communication media for university, corporate, small business, manufacturing and non-profit clients: web sites Information architecture and design for open source content management systems Front-end UI design, HTML, PHP, LESS Linux Apache […]

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WordPress Fail2Ban RegEx for RedHat, CentOS, Amazon Linux

VacantServer WordPress sites are getting hammered with bad logins and probes. We’ve implemented a plugin to log failed login attempts to syslog, and a Fail2Ban filter for the same. If you run these on RedHat, you’ll need some additional configuration info… here it is: WordPress login failure regex (error_log): ^%(__prefix_line)sAuthentication failure for .* from <HOST>$ […]

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APC INFO Monitor

APC Cache Considerations for Virtual Hosting Environments

…, given the number of virtual hosts. You will probably have better results if you remove APC and concentrate on Apache performance tuning and MySQL cache. If your clients are adamant in their requests to use APC cache, you may wish to move them to a different server which can properly handle their needs. Virtualmin […]

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