Help:MediaWiki-Vagrant in Labs
MediaWiki-Vagrant in Labs is enabled by applying the
role::labs::mediawiki_vagrant Puppet role to a Labs instance. This role will install Vagrant, LXC and MediaWiki-Vagrant on the target host. This combination allows using the full features of the MediaWiki-Vagrant stack including the custom Vagrant plugin on the labs host.
This role replaced the former method of applying the MediaWiki-Vagrant Puppet configuration directly on the Labs host via
Setting up your instance with MediaWiki-Vagrant
- Ensure your project has a security group that allows access on port 8080, the default port for MediaWiki-Vagrant HTTP requests. The security group may be named "Web" or "web-server", or the "default" security group for your project may allow on port 8080.
- Create your instance
- Choose Image type
ubuntu-14.04-trusty. MediaWiki-Vagrant will not run on the default
- Choose a security group that allows access on port 8080. (This can only be done while creating the instance!)
- Choose Image type
- Apply the role
role::labs::mediawiki_vagrant. You can do this by clicking on the "configure" next to your instance in the table of all instances.
- ssh to your instance, and run sudo puppet agent --test --verbose to ensure that the latest Puppet changes have been applied.
- Log out and log back in to pick up
profile.dalias that will make the vagrant command run Vagrant as the
mwvagrantshared user account. Note: skipping this step will cause problems!
- Change to the directory that MediaWiki-Vagrant has been pre-installed in: cd /srv/mediawiki-vagrant
- Start the LCX virtual machine and provision MediaWiki in it: vagrant up
- Verify that the new wiki is accessible from the host: curl http://localhost:8080/wiki/Main_Page
- If you get an error like "curl: (7) Failed to connect to localhost port 8080: Connection refused" you may need to run vagrant reload to restart the LXC container and trigger Vagrant to setup the proper port forwarding.
- Setup a proxy to port
8080on your instance.
https://<your new proxy hostname>.wmflabs.orgto see your new wiki
- Login to MediaWiki on your instance as user admin then use Special:ChangePassword to change the admin password to something other than the MediaWiki-Vagrant default.
Caution: There are many default settings in MediaWiki-Vagrant that leave your wiki insecure, it is tuned primarily to be a local development environment.
Since you are using the full MediaWiki-Vagrant stack on your instance, the same commands that you are used to using for local MediaWiki-Vagrant development on your laptop apply:
- vagrant roles list to see all roles that you can enable.
- vagrant roles enable <role> to enable a role.
- vagrant provision to apply role changes to your LXC container.
- vagrant ssh to open a command shell inside the LXC container.
- See MediaWiki-Vagrant for additional instructions and tips.
How do I...?
Most of your questions should be answered by reading the How do I...? section on the MediaWiki-Vagrant page. Since 99% of the code is re-used, most of your questions should be answered there.
Update MediaWiki-Vagrant to the latest version
git pull (as yourself) in the
Update the custom MediaWiki-Vagrant Vagrant plugin?
git pull you may receive an error from the
vagrant command similar to "Message: RuntimeError: Your mediawiki-vagrant plugin isn't up-to-date. Please re-run `setup.sh`." If you try to follow this advice the
setup.sh command will fail with a "Permission denied" error. This happens because the Vagrant environment is actually owned by the
mwvagrant user and
vagrant is a shell alias to a wrapper script that uses
The easiest way to update the installed version of the MediaWiki-Vagrant Vagrant plugin is by running Puppet on the host computer:
sudo puppet agent --test --verbose. If you really want to update manually for some reason, this command should work:
cd /srv/mediawiki-vagrant && sudo -u mwvagrant -n -- /usr/bin/env VAGRANT_HOME="/srv/vagrant-data" ./setup.sh
Update MediaWiki and other applications
The Vagrant command
git-update intelligently upgrades most of the pieces of MediaWiki.
$ cd /srv/mediawiki-vagrant $ vagrant git-update
Edit MediaWiki and other git managed files
It's probably easiest to become user
mwvagrant as that user owns most content that is managed by MediaWiki-Vagrant.
$ sudo su mwvagrant $ cd mediawiki $ # Make temporary local changes, etc. $ exit
Migrate from using
The best way to do this is just to build a new VM with
role::labs::mediawiki-vagrant following the instructions above and migrate your wiki content and configuration over to the new host using normal methods. See Manual:Moving_a_wiki for more instructions.
Create new MediaWiki-Vagrant roles
Test my puppet changes to Mediawiki-Vagrant
The best idea is for you to develop your patches in your local machine, push them to gerrit, pull them onto the labs machine and test it there. This ensures that you don't have to put your private keys on the labs instance.
- Submit a patchset to Mediawiki-Vagrant via Gerrit
- ssh to your labs instance, and cd to
- Cherry-pick your patch from gerrit (you can copy paste the relevant
git cherry-pickcommand from the gerrit page for your changeset)
Choose how big an instance to use
Consider that Vagrant runs several services by default, including MySql, HHVM and a Redis jobrunner. Especially if you plan to run heavy operations like unit testing big masses of code, to avoid swapdeath and/or OOM, choose the m1.medium or m1.large instances (4 and 8 GB RAM respectively).
Run a wikifarm on a single labs-vagrant host
When using roles like centralauth and wikidata you will need to be able to access multiple wikis that are provisioned on a single Labs virtual machine. By default,
role::labs::mediawiki-vagrant sets up its Apache2 configuration so that if you are running from a Labs instance named
mycoolproject.eqiad.wmflabs then Apache will route requests for
something-mycoolproject.wmflabs.org the same as MediaWiki-Vagrant would route
something.wiki.local.wmftest.net. All you need to do to get access to these wikis is to follow the instructions at Help:Proxy to setup a proxy for the
something-mycoolproject.wmflabs.org DNS hostname to your
If you want to change the base name of the wikifarm to something more meaningful for external users, you can customize the name by adding local hiera configuration data:
- Make a
/srv/mediawiki-vagrant/puppet/hieradata/local.yamlfile containing a base name that will be common to all of the wikis in your farm:
- Enable role(s) that provide additional wikis (e.g. centralauth, wikidata)
vagrant provisionto update the /etc/apache2/site-confs/devwiki/00-default.conf
- Configure web proxies to route to your instance using hostnames like
mywikihere would be the same name that precedes
.wiki.local.wmftest.netwhen you are using MediaWiki-Vagrant on a laptop (e.g. "login", "centralauthtest", "wikidata", etc)
"No usable default provider could be found for your system."
This usually means that the shell alias for
vagrant has not been setup for the current shell.
type -a vagrant is expected to return "vagrant is aliased to '/usr/local/bin/mwvagrant'".
source /etc/profile.d/alias-vagrant.sh can be used to set the alias in the current shell or the user can log out and log back into the Labs host.