Hi,

I have been setting up quite a few Mediawikis in both Windows and Linux, and it occurred to me it would be handy to know a bit about how the wikipedia is set up. Is there any up to date information about how which versions of software it runs (assuming that's not considered a security risk), and what it prefers?

The particular info I was pondering:

* I know they use APC, but do they use FastCGI or just mod_php? Is there a good page on hints as to how best configure this? * Mysql - is there a central cluster for updates, and then a bunch of slaves, I looked at this page: https://wikitech.leuksman.com/view/Server_roles but could work out if there were multiple machines as master, or just a single machine master, with lots of slaves for a single wiki eg EN. * Mysql - they still use 4, is this for stability, performance or some other reason? * Do they use a standard linux flavour eg ubuntu or Red Hat, or are the servers all on a custom kernel. * How do they manage upgrading the software, do different servers run on different versions. Presumably there is a test environment, but do they have to go read only at all?

Many thanks for any insights into managing this complex environment,

Alex Powell

Exscien Training Ltd Tel: +44 (0) 1865 920024 Direct: +44 (0) 1865 920032 Mob: +44 (0) 7717 765210

skype: alexp700 mailto:alexp@exscien.com http://www.exscien.com

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