MySQL Master-Master Replication, Heartbeat, DRBD, Apache, PHP, Varnish MegaHOWTO | IO Digital Sec

I created this HOWTO while building a new development environment today. The intention is to take a single Apache2/Varnish/MySQL environment and scale it to two servers, with one effectively a “hot-standby” – increase redundancy and continuity whilst maintaining current performance. This HOWTO is based on Linux Debian-76-wheezy-64-minimal 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3 x86_64 via MySQL …

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ISO 8601 – Wikipedia, the free encyclopedia

A single point in time can be represented by concatenating a complete date expression, the letter T as a delimiter, and a valid time expression. For example “2007-04-05T14:30”.If a time zone designator is required, it follows the combined date and time. For example “2007-04-05T14:30Z” or “2007-04-05T12:30-02:00”.Either basic or extended formats may be used, but both …

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