Deploying Drupal to heroku
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First download Drupal, this is easy with drush
drush dl drupal
and install the Heroku Toolbelt.
cd into the Drupal directory, make it a git repo and push to heroku
git init git add . git commit -m "initial commit" heroku create git push heroku master
heroku open command will open your app in the browser,
you should see the drupal installer, but we don't need this, we need to
manually add settings.php and commit it to git.
heroku addons:add heroku-postgresql heroku config
This will give you the database details you need to add to settings.php. We also need to remove (or edit) the gitignore file to let us commit settings.php.
rm .gitignore cd sites/default cp default.settings.php settings.php
Edit settings.php to add the database details, then commit and push to Heroku.
git add -u git add * git commit -m "adding settings.php and removing gitignore" git push heroku master
heroku open will open your app with an error
page. Add /install.php to the end of the URL and run through the Drupal
installer. On the third step you will see a warning about "Unicode
library". This is because the default Heroku PHP buildpack doesn't have
mbstring, however you can roll your own buildpack or use a third-party
one to add mbstring. For now, just click "proceed with the
installation". After completing the installer you will get logged into
your site and can start using Drupal.
Due to Heroku's ephemeral filesystem all files Drupal creates will not be stored if the dyno is stopped or restarted. Also some pages such as "/admin/reports/status" and "/admin/config" cause timeout errors. This issues could be resolved by creating a custom buildpack and copying all Drupal generated files to Amazon S3. Although, there are better solutions for Drupal hosting, so maybe not worth the effort.
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