…irtual domains, but it is quite helpful to optimize system resources and prevent traffic surges on one 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 virtua… 8, 0, 0, 0 and 7292.53
Some installations of Apache will have been compiled to work with either Prefork or Worker MPM, but most by default are compiled only to work with Prefork. Changing to Worker MPM may allow your server to handle much higher traffic, more user sessions, with less RAM use. Your site or server will not scale well if it is running Prefork MPM. Worker is a bit more difficult to set up properly, and has some restrictions regarding functionality of PHP… 2, 0, 1, 0 and 4016.82
…ns: “When PHP scripts for this domain as run via FCGId, the number of PHP processes set in this field will be kept running at all times to serve requests. You can increase this from the default of 4 to improve PHP script latency, or decrease it to reduce memory use. Setting it to None will cause PHP processes to be launched only as needed on demand, and to be cleaned up after some period of inactivity.” Nginx support on Virtualmin is… 3, 0, 0, 0 and 3847.74
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 […]
…VPS may not play well with CSF), you may use Fail2Ban. Tune Apache the Sane Way (Requires Basic Math Skills) If you wish to tune your Apache MPM settings, you should consider following this method: https://telvps.com/clients/knowledgebase/25/HOW-TO-Optimize-Apache-for-Low-Memory-Usage.html (the formula works well as a basic guide… but does not take into account PHP memory requirements… see Ovidiu’s comment below). MySQL Tuning… 5, 0, 0, 0 and 2391.85
…the rpmforge.repo. Search no longer works, nor does pagination, etc. Plus, it’s out of date and vulnerable to an XSS exploit. I have solved this by changing to the EPEL repo, which maintains the latest version of phpMyAdmin. This post will teach you how to install phpMyAdmin on CentOS, Amazon Linux, or Redhat. Configuration instructions are provided for Apache and NginX web servers. For this to work properly and safely, you should be runnin… 1, 0, 0, 0 and 2235.85
I was recently searching for a form template that uses Twitter’s Bootstrap framework. PFBC, the PHP Form Builder Class, was recently refactored with Bootstrap, and it also supports validation and reCAPTCHA. PFBC does not include a form handler, but it does take the difficult and redundant work out of creating self-validating forms. Adding an auto-mailer to PFBC is very simple, however. You just need a simple PHP if/else and all is well. If… 11, 0, 0, 0 and 2027.86
…the memory and CPU requirements are too great. I suggest using Virtualmin for a shared hosting environment with APC cache, because it does allow to set php.ini and fcgiwrapper for every individual virtual host, and so to set an individual configuration for APC per virtual server. However with 200+ virtual hosts all running PHP script packages, as is the case with a commodity shared hosting server, this will use a lot of memory, and you will need… 1, 0, 0, 0 and 1624.89
…trategy are subject to crippling traffic 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 nee… 6, 0, 0, 0 and 1351.91
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):
1 | ^%(__prefix_line)sAuthentication failure for .* from <HOST>$ |
Apache nohome regex (error_log):
1 | [[]client <HOST>[]] File does not exist: .*/~.* |
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