Synnefo

If running with greenlets, we should modify psycopg2 behavior, so it works

properly in a greenlet context:

However, as in Astakos, if running with Greenlets, it is also recommended to

modify psycopg2 behavior so it works properly in a greenlet context. This means

adding the following lines at the top of your

Furthermore, add the ``--worker-class=gevent`` argument on your

``/etc/gunicorn.d/synnefo`` configuration file. The file should look something like

this:

.. code-block:: console

   CONFIG = {

    'mode': 'django',

    'environment': {

      'DJANGO_SETTINGS_MODULE': 'synnefo.settings',

    },

    'working_dir': '/etc/synnefo',

    'user': 'www-data',

    'group': 'www-data',

    'args': (

      '--bind=127.0.0.1:8080',

      '--workers=4',

      '--worker-class=gevent',

      '--log-level=debug',

      '--timeout=43200'

    ),

   }

not familiar with Ganeti. If you are extremely impatient, you can result with

the above assumed setup by running on both nodes:

.. code-block:: console

   # apt-get install -t squeeze-backports ganeti2 ganeti-htools

   # modprobe drbd minor_count=255 usermode_helper=/bin/true

Unfortunatelly, stock Ganeti doesn't support IP pool management yet (we are

working hard to merge it upstream for Ganeti 2.7). Synnefo depends on the IP

pool functionality of Ganeti, so you have to use GRNET's patches for now. To

do so you have to build your own package from source. Please clone our local

repo:

.. code-block:: console

   # git clone https://code.grnet.gr/git/ganeti-local

   # cd ganeti-local

   # git checkout stable-2.6-ippool-hotplug-esi

   # git checkout debian-2.6

Then please check if you can complile ganeti:

.. code-block:: console

   # cd ganeti-local

   # ./automake.sh

   # ./configure

   # make

To do so you must have a correct build environment. Please refer to INSTALL

file in the source tree. Most of the packages needed are refered here:

.. code-block:: console

   #  apt-get install graphviz automake lvm2 ssh bridge-utils iproute iputils-arping \

                      ndisc6 python python-pyopenssl openssl \

                      python-pyparsing python-simplejson \

                      python-pyinotify python-pycurl socat \

                      python-elementtree kvm qemu-kvm \

                      ghc6 libghc6-json-dev libghc6-network-dev \

                      libghc6-parallel-dev libghc6-curl-dev \

                      libghc-quickcheck2-dev hscolour hlint

                      python-support python-paramiko \

                      python-fdsend python-ipaddr python-bitarray libjs-jquery fping pandoc

Now lets try to build the package:

   # apt-get install git-buildpackage

   # mkdir ../build-area

   # git-buildpackage --git-upstream-branch=stable-2.6-ippool-hotplug-esi \

                   --git-debian-branch=debian-2.6 \

                   --git-export=INDEX \

                   --git-ignore-new

To be able to sign the packages a key must be found in the system to comply to the

name and email of the last debian/changelog entry in debian branch. Please note

that signing is optional.

This will create two deb packages in build-area. You should then run in both

nodes:

.. code-block:: console

   # dpkg -i ../build-area/ganeti-htools.*deb

   # dpkg -i ../build-area/snf-ganeti.*deb

   # apt-get install -f

.. warning:: Make sure you have installed ``python-gevent`` version >= 0.13.6.

    This version is available at squeeze-backports and can be installed by

    running: ``apt-get install -t squeeze-backports python-gevent``