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APC INFO Monitor

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

…shm_segments = 1 apc.shm_size = 12M apc.optimization = 0 apc.num_files_hint = 512 apc.user_entries_hint = 1024 apc.ttl = 0 apc.user_ttl = 0 apc.gc_ttl = 600 apc.cache_by_default = 0 apc.filters = “-/home/username/public_html/apc/apc\.php$” apc.slam_defense = 0 apc.use_request_time = 1 apc.mmap_file_mask = /tmp/apc-accountname.XXXXXX ;OR apc.mmap_file_mask = /dev/zero apc.file_update_protection = 2 apc.enable_cli = 0 apc.max_file_size = 2M… 108, 1, 5, […]

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

…php-fastcgi, each virtual domain will load its own php.ini file, so you can add the APC directives to that file (/home/domainname/etc/php5/php.ini) Add the following to php.ini (adjust to your requirements) [APC] extension = apc.enabled = 1 apc.shm_segments = 1 apc.shm_size = 12M apc.optimization = 0 apc.num_files_hint = 256 apc.user_entries_hint = 1024 apc.ttl = 0 […]

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APC INFO Monitor

APC Cache Considerations for Virtual Hosting Environments

…irtual 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 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 […]

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

…on, 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 Plus, it’s out of date and vulnerable to an XSS exploit.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. […]

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

…he publisher after responding to a plea for assistance in a support forum. Though the site was running 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 […]

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Varnish VCL and Config for WordPress with W3 Total Cache

…nish) # Configuration file for varnish # # /etc/init.d/varnish expects the variable $DAEMON_OPTS to be set from this # shell script fragment. # # # Maximum number of open files (for ulimit -n) NFILES=131072 # # Locked shared memory (for ulimit -l) # Default log size is 82MB + header MEMLOCK=82000 # # Maximum size […]

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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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