Migrating mediawiki from mysql to sqlite

To migrate a mediawiki from MySQL to SQLite there are two basic approaches:

• start with a new database and worry about
  • dumping all pages but the Main Page with the dumpBackup command and restoring them with the importDump command
  • keeping the articles' revisions
  • copying the Main Page from the old wiki to the new
  • copying the users and privileges from the old wiki to the new
  • copying the wiki statistics (like page visits) from the old wiki to the new
  • copying images and other files from the old wiki to the new
  • re-doing things like mediawiki extensions on the new wiki
  • re-doing your settings e.g. from LocalSettings.php on the new wiki

Matt gives a good overview about this

• just migrate the database below your wiki

migrate database below your wiki

I wanted to migrate the database below my wiki so

• I created a dump (aka backup aka export) of the database

mysqldump wikidb -u wikiuser -p > dump.sql

• I got a MySQL -> SQLite converter

wget https://gist.github.com/esperlu/943776/raw/dd87f4088f6d5ec7563478f7a28a37ba02cf26e2/mysql2sqlite.sh

• I started this converter to create a file /srv/www/htdocs/wikidb.sqlite:

sh mysql2sqlite.sh -u wikiuser -p wikidb | sqlite3 /srv/www/htdocs/wikidb.sqlite

Unfortunately I had a revision comment where I had accidentially hit the "\" key. The revision comment contained a "\" at the end and this led to an error.

• change LocalSettings.php to reflect

$wgDBtype = "sqlite";
$wgDBserver = "";
$wgDBname = "wikidb";
$wgDBuser = "";
$wgDBpassword = "";
$wgSQLiteDataDir = "/srv/www/htdocs";

• allow your webserver to write to the file:

chown wwwrun:www /srv/www/htdocs/wikidb.sqlite

• run maintenance/update.php

See also

• Migrating_a_database_from_mysql_to_sqlite