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APC INFO Monitor

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

…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 Modification of Defaults Be sure to install the newest version […]

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

…ver. Switching from Apache to Nginx later is difficult, as is transferring apache virtual server backups. Best to start fresh and build from scratch. Testing the Virtualmin Nginx Modules Virtualmin does not support Nginx and Apache together, and there is no easy migration from Apache to Nginx, so it is suggested to begin with a […]

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

…utilize the server’s horsepower. 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 […]

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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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Varnish VCL and Config for WordPress with W3 Total Cache

….0.0.1 VARNISH_ADMIN_LISTEN_PORT=6082 # # # Shared secret file for admin interface VARNISH_SECRET_FILE=/etc/varnish/secret # # # The minimum number of worker threads to start VARNISH_MIN_THREADS=1 # # # The Maximum number of worker threads to start VARNISH_MAX_THREADS=1000 # # # Idle timeout for worker threads VARNISH_THREAD_TIMEOUT=120 # # # Cache file location if using file cache […]

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APC INFO Monitor

APC Cache Considerations for Virtual Hosting Environments

…stered by myself, not by the clients. I do not think APC is the correct cache for most shared web hosting servers, 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 […]

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Fail2Ban Regex for RedHat, Fedora, CentOS and Amazon Linux 2013

…y old standby, Fail2Ban. “Out of the box,” Fail2Ban for CentOS & other RedHat downstream distros only provides protection against SASL login failures. But with a little work and research, one can successfully configure many more “jails” for the malicious traffic. To take full advantage of Fail2Ban, the admin will need to become familiar with […]

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