Mediawiki is installed on wiki.openstack.org.
At a Glance¶
wiki.openstack.org runs off of Wikimedia Foundation deployment branches.
This was done to ease the pain of managing Mediawiki extensions. The
foundation branches come with git submodules that refer to known good
versions of extensions. Much (but not all) of the configuration is in
puppet in the
openstack-infra/system-config repository. Mediawiki
upgrades are currently performed manually.
Two versions of Mediawiki are installed with one being the active
install and the other being previously used version kept as a backup.
The two installs can be found at
/srv/mediawiki/w symlink refers to
active Mediawiki install slot. To perform a Mediawiki upgrade:
- Determine which install slot is active
ls -l /srv/mediawiki/w. Once this value is known do not use
/srv/mediawiki/win your commands, doing so will break the git submodules. Always use specific slot paths eg
- Fetch the latest git content in the inactive slot
cd /srv/mediawiki/$INACTIVE_SLOT && git fetch.
- Find the latest Wikimedia Foundation branch
git branch -a. Make sure this version matches http://www.mediawiki.org/wiki/Special:Version we don’t want to upgrade until that upstream is running the latest version.
- Create and checkout a local tracking branch for the latest upstream branch
git checkout -b wmf/1.22wmf11 origin/wmf/1.22wmf11.
- Update the git submodules for this new branch
git submodule update --init.
- Take stock of the current state of extensions
git status. You should see several untracked dirs for things like the strapping skin and openid. Any untracked extensions that we are not using should be removed.
- Update the untracked extensions that we are using
cd $EXTENSION_DIR && git pull origin master. Note there may be conflicts doing this if security patches or bug fixes have been applied by hand. Refer to /srv/mediawiki/NOTES for info.
- Run the backup script
/srv/mediawiki/backup.sh. This will backup the active slot to
- Update the DB schemas
php maintenance/update.php --quick. Be sure to run this within the slot you are upgrading (the inactive slot). If you used the
cdin step 2 this should be the case. Mediawiki DB schemas are backward compatible so we can upgrade it without taking down the active slot.
- If there were updates to the CirrusSearch extension, search may stop working unless the index is rebuilt. The easiest way to do this is
php extensions/CirrusSearch/maintenance/updateSearchIndexConfig.php --startOverfollowed by
php extensions/CirrusSearch/maintenance/forceSearchIndex.phprelative to the inactive slot you’ve upgraded (option 1.A as described at https://phabricator.wikimedia.org/diffusion/ECIR/browse/master/README in the upgrading section).
- At this point we are ready to change the
/srv/mediawiki/wsymlink to point to the slot we just upgraded
rm -f /srv/mediawiki/w && ln -s /srv/mediawiki/$PREVIOUSLY_INACTIVE_SLOT /srv/mediawiki/w. https://wiki.openstack.org/wiki/Special:Version should report the new version now.