Migration Guide

This page contains generic migration instructions. Please read the version-specific page to check if there are special instructions to migrate to this version.

Warning

When upgrading Pontoon Debian from a version to another one, prefer migrating from a version to the next one without skipping any intermediate version. While it could work, this is an untested migration path.

1. Stop Pontoon Service

The first thing to do before starting the migration is to stop the Pontoon service:

systemctl stop pontoon

2. Backup the Database

Once Pontoon stopped, backup the database to be able to rollback if anything wrong happens. Follow instruction from the backup guide:

Backuping and Restoring Pontoon

3. Download, Extract and Install the New Release

First download the Pontoon release you want to migrate to:

cd /opt/pontoon
wget https://github.com/wanadev/pontoon-debian/releases/download/vXXXX.XX.XX.X/pontoon_XXXX.XX.XX.X.tar.gz

See Getting Pontoon for more information.

Once the download finished, extract the Pontoon release and update the symbolic link:

tar -xvzf pontoon_XXXX.XX.XX.X.tar.gz
rm current
ln -s pontoon-XXXX.XX.XX.X/ current

Then go to the current/ folder:

cd current/

And rebuild the symbolic link to the media/ folder:

ln -s /var/opt/pontoon/media /opt/pontoon/current/media
chown pontoon:pontoon /opt/pontoon/current/media

Finally, create the virtualenv:

python3 -m venv __env__
source __env__/bin/activate
pip install --upgrade pip

And install the dependencies:

pip install -r requirements.txt

4. Migrate the Database

Once the new Pontoon release installed, the database must be migrated using the following commands:

export DOTENV_PATH=/etc/opt/pontoon.env
python manage.py migrate

5. Restart the Pontoon Service

If everything is ok, you can now restart your Pontoon service:

systemctl start pontoon

Rollback

If something goes wrong during the migration, you can rollback to the previously installed Pontoon version.

Stop the Pontoon service:

systemctl stop pontoon

Update the current/ symbolic link:

cd /opt/pontoon
rm current
ln -s pontoon-XXXX.XX.XX.X/ current   # where XXX.XX.XX.X is the previous version

Restore the backup of your database following the instruction from the backup guide:

Backuping and Restoring Pontoon

Restart the Pontoon service:

systemctl start pontoon