View source for Rename a wiki

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This document describes a possible approach to renaming a wiki.

This is a '''Request for comments''' and has not been reviewed yet.
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==Assumptions==
* The language code of a wiki shall be renamed. The wiki keeps its "''class''" (e.g. wikipedia, wikiversity, etc).
* The languagecodes "''old''" and "''new''" will be used to name the old and new wikis. "''newwiki''" and "''oldwiki''" are the names of the new and old databases.

==Approach==

# Add the new language code and the language name to languages/Names.php
# Create messages/Messages''New''.php and, if necessary, classes/Language''New''.php
# Add the language code to /home/wikipedia/common/langlist
# Set ''oldwiki'' to read-only
# Create a mysql dump of the database ''oldwiki''
# Create a mysql dump of the extstores. Very old wikis will have text records stored in different extstores!
# php maintenance/addwiki.php --wiki=''oldwiki'' ''new'' ''newwiki'' ''newwiki'' ''new.wikipedia.org''
# Set ''newwiki'' to read-only
# Import the database dump of the old wiki into the new database.
# Import the extstore dump into the new exstore database.
# Change all settings in InitialiseSettings.php and, if necessary, in flaggedrevs.php etc pp
# Move the images from /mnt/upload6/''project''/''old'' to /mnt/upload6/''project''/''new'' and from /mnt/thumbs/''project''/''old'' to /mnt/thumbs/''project''/''new''
# ??? Do we have to do any changes for SUL?
# Update the interwiki cache: php maintenance/dumpInterwiki.php -o cache/interwiki.cdb
# sync-common-all
# Add the new wiki in the [[DNS]] zone
# Set ''newwiki'' to read-write
# Set up redirects from ''old''.''project''.org to ''new''.''project''.org in /home/wikipedia/conf/redirects.conf
# If no other wikis with language code ''old'' exist, remove ''old'' from /home/wikipedia/common/langlist
# Remove ''oldwiki'' from all *.dblist files

== open topics ==
# update Lucene search system
# clean page caches for all projects since the interwiki is incorrect in Squid caches (redirection can handle it though)
# need a script to verify the configuration before and after (compare $_GLOBALS ? ), or use if( $wgDbName == 'oldwiki' || $wgDbName == 'newiki' )
# synchronize the operation with toolserver. We might want them to do the same operation.
# make sure search engines handle the redirection correctly (they should forget about the old page maybe 301 Moved Permanently).
# this procedure should be fully tested
# write a backup plan so we can easily apply it if anything goes wrong.
# optionally clear memcached obsoletes keys