…d_buffer_size = 8M read_buffer_size = 2M sort_buffer_size = 2M table_cache = 1600 table_definition_cache = 1600 max_allowed_packet = 4M key_buffer = 1G interactive_timeout = 2 wait_timeout = 5 long_query_time = 1 log_slow_queries = ON open_files_limit = 3200 innodb_buffer_pool_size = 26M join_buffer_size = 4M tmp_table_size = 72M max_heap_table_size = 72M max_connections = 80 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/my… 21, […]
…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 virtual servers under FCGId, then you should do so for all virtual servers on your machine. Why? Because […]
…mon to block offending IP addresses with multiple failed HTTP logins. ConfigServer Firewall works well, and has modules for cPanel and Webmin. OSSEC is another reactive IPTables firewall with Apache login failure IP blacklisting. For Amazon EC2, a good practice is to create a discrete database server, and only allow access to it inside a […]
…ty issue. Evidently this is a security measure to prevent cross-site attacks, but you can allow this via Apache mod_headers, to allow your specific CloudFront (or other) domain, specified in the .htaccess file. Some sites have suggested using “*” wildcards to allow all domains… but obviously this is a security issue: with this Header, you […]
…ferring apache virtual server backups. Best to start fresh and build from scratch. Testing the Virtualmin Nginx Modules Virtualmin does not support Nginx and Apache together, and there is no easy migration from Apache to Nginx, so it is suggested to begin with a fresh install of Virtualmin with no existing accounts. If you would […]
…sh # # /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 of corefile (for ulimit -c). […]
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…ns 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 needs of a high traffic WordPress site. Configured a large MySQL table and query cache based on performance and load testing. Configured Amazon CloudFront Content Distribution Network, page […]
APC cache does not work well in a virtual hosting environment unless PHP is running as FCGID, and every individual virtual host has a unique PHP.ini and a unique fcgiwrapper. This is not the case with many virtual hosting environments because the memory and CPU requirements are too great. I suggest using Virtualmin for a […]