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APC INFO Monitor

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

…”, but W3TC requires stat polling to monitor file status, post revisions, plugin upgrades, etc.) turn off apc.optimization (experimental and unstable, may cache user session info, fubaring items which should not be cached, such as admin pages and logged-in site pages) turn off apc.include_once_override (use carefully; only useful with PHP scripts that do not have […]

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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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APC INFO Monitor

APC Cache Considerations for Virtual Hosting Environments

…hared hosting server, this will use a lot of memory, and you will need somewhere in the neighborhood of 10-30GB apc.shm_size if you attempt to configure a single APC cache for the entire server. My web hosting server is for a small number of personal clients, so I adjust the APC settings for each individual […]

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Varnish VCL and Config for WordPress with W3 Total Cache

…out restart. # To make this work, you need to set the following variables # explicit: VARNISH_VCL_CONF, VARNISH_ADMIN_LISTEN_ADDRESS, # VARNISH_ADMIN_LISTEN_PORT, VARNISH_SECRET_FILE RELOAD_VCL=1 # ## Advanced configuration # # # Main configuration file. VARNISH_VCL_CONF=/etc/varnish/wordpress-varnish3.vcl # # # Default address and port to bind to # # Blank address means all IPv4 and IPv6 interfaces, otherwise specify […]

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Web Hosting

Decades of experience hosting websites, from small local sites with only a few html pages, to high-traffic sites with thousands of users and pages.  Website hosting, evolved Web hosting has changed dramatically in the last few years. The majority of accounts are now running PHP scripts and MySQL, whereas in the past most accounts were only […]

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

…ully configure many more “jails” for the malicious traffic. To take full advantage of Fail2Ban, the admin will need to become familiar with RegEx: regular expressions. Amazon Web Services Security Groups AWS provides several levels of firewall protection for EC2 instances; I mainly utilize EC2 security groups and VPC security groups. These firewalls serve to […]

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

…r for the script only) MySQL Tuning Primer: phpMyAdmin 3.5+: Status Monitor and Advisor are excellent tools, but require proper phpMyAdmin setup These scripts will analyze MySQL performance and make suggestions regarding your my.cnf configuration. mysqltuner is now deprecated, but it still widely used and is very simple. Tuning Primer is the most up-to-date, and […]

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

…ing on a dedicated server with 8GB RAM, it was crashing frequently under load. The developer tried implementing APC Alternative PHP Cache and W3 Total Cache, but these measures turned out to be incompatible with some of the custom PHP code and the software architecture of the Cpanel server. Haphazardly implementing randomly suggested “solutions” had […]

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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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