Upgrading

Upgrading

There are a number of things to keep in mind when upgrading the source code for Canvas.

For the most part, it is easiest to upgrade Canvas if you have kept your Canvas source code in a Git repository. Then, you can simply run

git fetch && git reset --hard origin/stable

or some equivalent Git command.

Please note that this command will remove any staged or committed changes that you have made to your local repository. However, if you have a checkout of our stable branch from 2011-08-06 or later, you can also do

git fetch && git pull --rebase

to safely update your stable branch and keep your changes. Prior to 2011-08-06 we were force pushing divergent branches to stable (sorry) so git pull --rebase will give you conflicts.

Configuration and locally stored files

If you did not upgrade using Git, you will need to know what files to replace, and what files to keep. In general, you want to keep anything in the config directory that ends in .yml. Further, if you are using local storage for uploaded files and attachments, you will want to preserve files in your local storage directory, which defaults to tmp/files

Compiled Assets

Regardless of how upgrade your Canvas installation, once you are done, you will need to recompile a number of assets, such as Javascript and CSS files. We provide a tool that can do this for you.

$GEM_HOME/bin/bundle exec rake canvas:compile_assets

Database migrations

Often, there is some minor database migration that needs to happen for all of the latest Canvas features to work. There is a built in Rails command to do this:

$GEM_HOME/bin/bundle exec rake db:migrate

If you are running a production environment, you will probably want to specify that.

RAILS_ENV=production $GEM_HOME/bin/bundle exec rake db:migrate