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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… 101, 1, 4, […]

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

…lic_html/scripts-not-to-cache/.*,-/home/username/public_html/apc/.*” apc.slam_defense = 0 apc.use_request_time = 1 apc.mmap_file_mask = /tmp/apc.XXXXXX apc.file_update_protection = 2 apc.enable_cli = 0 apc.max_file_size = 2M apc.stat = 1 apc.write_lock = 1 apc.report_autofilter = 0 apc.include_once_override = 0 apc.rfc1867 = 0 apc.rfc1867_prefix = “upload_” apc.rfc1867_name = “APC_UPLOAD_PROGRESS” apc.rfc1867_freq = 0 apc.localcache = 1… 44, 1, 1, 0 and 3125.2

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

…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 queries directly from cache. Take Time to Get a Realistic Assessment of MySQL […]

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

…se, resulting in an “own goal” that brought down the server. I did an assessment of the software, hardware and traffic load and found that there were many improvements to be made. Among the changes: Implemented a Stateful Packet Inspection firewall and Login Failure Daemonto block malicious IP addresses, malware servers, bad bots, content scrapers, […]

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Varnish VCL and Config for WordPress with W3 Total Cache

…!~ “^/wp-(login|admin)” ){ unset beresp.http.Set-Cookie; } # # don’t cache response to posted requests or those with basic auth if ( req.request == “POST” || req.http.Authorization ) { return (hit_for_pass); } # # only cache status ok if ( beresp.status != 200 ) { return (hit_for_pass); } # # don’t cache search results if( req.url […]

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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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Chris Gilligan Web Developer, Information Architect, Web Server Administrator, Media Producer web • video • print 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 Front-end UI design, HTML, PHP, LESS Linux Apache […]

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