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APC INFO Monitor

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

…site from affecting overall server performance. Joomla and PHPbb have code that is pre-optimized with hooks for APC, but WordPress requires a plugin called W3 Total Cache. First Things First Please read my posts about APC on commodity virtual hosting servers and Apache and MySQL performance tuning before you begin. If you are running your virtual servers under FCGId, then you should do so for all virtual servers on your machine. Why? Because the… 93, 1, 4, 0 and 10572.56

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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 ease of development, compatibility with other scripts, etc. Accordingly, the suggested configuration is for WordPr… 42, 1, 1, 0 and 4955.48

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APC INFO Monitor

APC Cache Considerations for Virtual Hosting Environments

…ckages running on the account. These accounts are all administered 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 to use APC cache, you may wish to move them to a different server which can… 11, 1, 1, 0 and 1517.78

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

…ollow the recommendations from the Apache tuning, and then follow the recommendations of the tuning scripts. The apache tuning will give you the number of maxclients, and from this you will know the appropriate beginning value for [mysqld] max_connections. Begin with max_connections set slightly higher than Apache’s maxclients. If you are running database caching via APC, you may lower max_connections, because APC will serve the busiest que… 3, 0, 0, 0 and 778.35

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Apache config for Worker MPM vs Prefork MPM

…determine which MPM is running: /usr/sbin/apachectl -l If you see worker.c in the list of loaded modules, your Apache is running Worker MPM. If prefork.c, it is running prefork. To determine if apache has Worker MPM compiled in: /usr/sbin/httpd.worker -l If you see worker.c in the list of compiled-in modules, Apache can run Worker MPM. Here is some useful info to help if your installation of Apache will work with Worker MPM: http://www…. 9, 1, 3, 0 and 687.54

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

…c from the Internet’s millions of malicious and compromised servers and personal computers. Reconfigured Apache web server, PHP and MySQL to better 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. Co… 2, 0, 1, 0 and 622.68

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

…dmin /usr/share/phpMyAdmin <Directory /usr/share/phpMyAdmin/> <IfModule mod_authz_core.c> # Apache 2.4 <RequireAny> Require ip 127.0.0.1 Require ip ::1 </RequireAny> </IfModule> <IfModule !mod_authz_core.c> # Apache 2.2 Order Deny,Allow # comment out Allow from All and add your own static IPs here for security # Allow from All Allow from 123.456.7… 7, 1, 0, 0 and 467.01

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Varnish VCL and Config for WordPress with W3 Total Cache

I have been working on a Varnish front-end for Apache, to be used with WordPress sites. I described the architecture in Load Balancing Virtualmin WordPress Hosting Server with Varnish on AWS. I now have a configuration that seems to work for all WordPress features, including logged-out commenting. This configuration also works well with W3 Total Cache. This configuration is for Varnish on a separate server, but should also work on a single serve… 0, 0, 3, 0 and 285.39

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Résumé

Chris Gilligan Information Architect, Web Server Administrator, Media Producer web • video • print chris@chrisgilligan.net chrisgilligan.com 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 Linux Apache MySQL PHP web server administration Postfix Dovecot Sendmail […]

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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):

Apache nohome regex (error_log):

[…]

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