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Upgrade to Synnefo v0.16
^^^^^^^^^^^^^^^^^^^^^^^^


Upgrade Steps
=============

The upgrade to v0.16 consists in the following steps:

1. Bring down services and backup databases.

2. Upgrade packages, migrate the databases and configure settings.

3. __placeholder__

4. Bring up all services.

.. warning::

    It is strongly suggested that you keep separate database backups
    for each service after the completion of each step.

1. Bring web services down, backup databases
============================================

1. All web services must be brought down so that the database maintains a
   predictable and consistent state during the migration process::

    $ service gunicorn stop
    $ service snf-dispatcher stop
    $ service snf-ganeti-eventd stop

2. Backup databases for recovery to a pre-migration state.

3. Keep the database servers running during the migration process.


2. Upgrade Synnefo and configure settings
=========================================

2.1 Install the new versions of packages
----------------------------------------

::

    astakos.host$ apt-get install \
                            python-objpool \
                            snf-common \
                            python-astakosclient \
                            snf-django-lib \
                            snf-webproject \
                            snf-branding \
                            snf-astakos-app

    cyclades.host$ apt-get install \
                            python-objpool \
                            snf-common \
                            python-astakosclient \
                            snf-django-lib \
                            snf-webproject \
                            snf-branding \
                            snf-pithos-backend \
                            snf-cyclades-app

    pithos.host$ apt-get install \
                            python-objpool \
                            snf-common \
                            python-astakosclient \
                            snf-django-lib \
                            snf-webproject \
                            snf-branding \
                            snf-pithos-backend \
                            snf-pithos-app \
                            snf-pithos-webclient

    ganeti.node$ apt-get install \
                            python-objpool \
                            snf-common \
                            snf-cyclades-gtools \
                            snf-pithos-backend \
                            snf-network

.. note::

   Make sure `snf-webproject' has the same version with snf-common

.. note::

    Installing the packages will cause services to start. Make sure you bring
    them down again (at least ``gunicorn``, ``snf-dispatcher``)

2.2 Sync and migrate the database
---------------------------------

.. note::

   If you are asked about stale content types during the migration process,
   answer 'no' and let the migration finish.

::

    astakos-host$ snf-manage syncdb
    astakos-host$ snf-manage migrate

    cyclades-host$ snf-manage syncdb
    cyclades-host$ snf-manage migrate

    pithos-host$ pithos-migrate upgrade head


3. __placeholder__
==================


4. Bring all services up
========================

After the upgrade is finished, we bring up all services:

.. code-block:: console

    astakos.host  # service gunicorn start
    cyclades.host # service gunicorn start
    pithos.host   # service gunicorn start

    cyclades.host # service snf-dispatcher start