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

…tateful packet inspection (SPI) firewall & login failure daemon (LFD) for your server: ConfigServer Firewall is an excellent free firewall & LFD. This will help prevent brute force 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… 20, 0, 0, 0 and 2339.93

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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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APC INFO Monitor

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

APC INFO Monitor My Virtualmin CentOS 5.6 Virtual Private Server runs several virtual domains with PHP under FCGId using APC for opcode caching: Joomla, PHPbb, WordPress, etc . APC is somewhat challenging to configure properly with fcgid-enabled virtual 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 w… 4, 0, 0, 0 and 207.99

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SoccerNews.com website

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

…of users. Future plans include changing the architecture of the server to simplify the background processes and implement APC Alternative PHP Cache, or a caching web server front end. Results? I’ll let the publisher speak to that! The site has been as good as “flawless” since, with no downtime, and we couldn’t be happier. Everything is running smoothly and it’s a great relief knowing that we made the site faster, sa… 1, 0, 0, 0 and 155.99

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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 with W3 Total Cache on Nginx with APC (Virtualmin)

…esses you specify in Virtualmin > Server Configuration > Website Options, so beware of the memory overhead if you specify a large number, because each will consume the amount of memory specified in  apc.shm_size. You may need to experiment with this value, depending on your server’s memory and potential traffic. Virtualmin explains: “When PHP scripts for this domain as run via FCGId, the number of PHP processes set in this field… 2, 0, 0, 0 and 103.99

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Apache config for Worker MPM vs Prefork MPM

…g/httpd restart apache do some performance testing and raise your worker server and thread limits to sane levels in httpd.conf If you need to recompile Apache and PHP, then you should do more research. Recompiling is not a trivial process. I found that my server had much better memory usage under Worker MPM, however: some scripts (squirrelmail, phpmyadmin) do not work on a per-domain basis and must be run direct to the actual server process wi… 2, 0, 0, 0 and 103.99

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University Website and Blog Redesign

…xtension. LESS Files: along with the entire development site (was easier to zip this way). Download & unzip, it will run as a local site if you like… Start with kickstrap.less, see what it includes — mostly the standard Bootstrap LESS files. Next look at theme.less, which jumps to Kickstrap/themes/utcms/theme.less, which has all of the custom stuff and some comments. Read the comments and then look at the individual files to see what’s going… 1, 0, 0, 0 and 52

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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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Varnish VCL and Config for WordPress with W3 Total Cache

…t beresp.ttl = 24h; return (deliver); } # sub vcl_deliver { # add debugging headers, so we can see what’s cached if (obj.hits > 0) { set resp.http.X-Cache = “HIT”; } else { set resp.http.X-Cache = “MISS”; } # remove some headers added by varnish unset resp.http.Via; unset resp.http.X-Varnish; } # sub vcl_hash { hash_data( req.url ); # altering hash so subdomains are ignored. # don’t do this if you actually run different sites on different subd… 1, 0, 0, 0 and 52

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