How to upgrade mediawiki
Our wiki installation is cloned from mediawiki's git repository. Mediawiki has branches for each release; we have branches that track mediawiki branches.
In general, the Masspirates mediawiki is the standard mediawiki distribution, plus a couple of commits (for changes to LocalSettings.php and such).
$ git status On branch mapp-1.28 Your branch is ahead of 'origin/REL1_28' by 2 commits. (use "git push" to publish your local commits)
$ git branch * mapp-1.28 master
Above, mapp-1.28 is based on mediawiki's REL1_28 branch, and there are a few changes on top. Upgrading follows one of two procedures:
- Pulling in changes from the same branch. In this case, just rebase
- Switching to a new branch. Here, we want to make a new (local) branch off the new upstream release, and cherry pick
That's the overview. I'll go into more detail below.
The Upgrade Process
With that said, the upgrade involves five steps.
- Backup the database
- upgrade code
- update composer's dependencies
- run maintenance/update.php
- resolve any changes to configuration variables
- update skins
We'll go through these steps one at a time
mysqldump --verbose -uUSER -pPASSWD --complete-insert=1 DBNAME | gzip -9 > masspira_mdw1.$(date +%F).sql.gz mv *.sql.gz backup
Rebasing from the same branch
git status # should be no outstanding changes git remote update git rebase origin/REL1_28
Above, substitute "origin/REL1_28" with the actual upstream branch.
Having done this,
git log --oneline origin/REL1_28..HEAD
lists the local changes we've made.
Switching to a new Release branch
The general gist
- identify changes you've made on the current branch
- create a local branch, to mirror one of the mediawiki release branch
- cherry pick local changes made on the old branch.
Update composer dependencies
$ ~/bin/composer.phar self-update $ ~/bin/composer.phar update
Note: if composer is too old, it may be necessary to remove and reinstall it.
Running Maintainance Scripts
$ php maintenance/update.php
Resolving Changes to Configuration Variables
For this step, look at the "UPGRADE" and "RELEASE-NOTES" files in mediawiki's root directory. It's a good idea to look through these files anyway, to see what changes are in the new release.
We use the Monobook skin, which was git cloned from a separate repository than the main mediawiki distribution. It's a submodule that has to be upgraded separately.
cd skins/MonoBook git fetch origin git rebase origin/master
Then, commit the submodule changes
cd .. git add MonoBook git commit