Synnefo

.. _i-ganeti:

Synnefo

-------

:ref:`synnefo <i-synnefo>` ||

:ref:`ns <i-ns>` ||

:ref:`apt <i-apt>` ||

:ref:`mq <i-mq>` ||

:ref:`db <i-db>` ||

:ref:`gunicorn <i-gunicorn>` ||

:ref:`apache <i-apache>` ||

:ref:`webproject <i-webproject>` ||

:ref:`astakos <i-astakos>` ||

:ref:`qh <i-qh>` ||

:ref:`cms <i-cms>` ||

:ref:`pithos <i-pithos>` ||

:ref:`cyclades <i-cyclades>` ||

:ref:`kamaki <i-kamaki>` ||

:ref:`backends <i-backends>`

Backends

++++++++

ganeti ||

:ref:`image <i-image>` ||

:ref:`gtools <i-gtools>` ||

:ref:`network <i-network>`

Ganeti Setup

~~~~~~~~~~~~

In ``ganeti`` nodes install GRNet specific Ganeti package and enable drbd:

.. code-block:: console

   # apt-get install python-bitarray

   # apt-get install snf-ganeti ganeti-htools

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

The following apply to ``master`` node. Here we will create a Ganeti cluster with

all available ``ganeti`` nodes. Please note that Ganeti needs a pair of rsa/dsa keys

for the root user. If already exist in `/root/.ssh/` in all nodes then --no-ssh-init

can be used. In omitted then the existing files will be overriden. Upon node add

Ganeti will replace `/etc/ssh/ssh_host*` files with the master's ones:

.. code-block:: console

    # gnt-cluster init --enabled-hypervisors=kvm \

                       --vg-name=ganeti \

                       --nic-parameters link=br0,mode=bridged \

                       --master-netdev eth0 \

                       --default-iallocator hail \

                       --hypervisor-parameters kvm:kernel_path=,vnc_bind_address=0.0.0.0 \

                       --no-ssh-init --no-etc-hosts \

                       ganeti.example.com

    # gnt-cluster modify --disk-parameters=drbd:metavg=ganeti

    # gnt-group modify --disk-parameters=drbd:metavg=ganeti default

    # for n in node2 node3 node4 node5 node6; do

        gnt-node add --no-ssh-key-check --master-capable=yes --vm-capable=yes $n.example.com

      done

We need to add a rapi user to Ganeti so that Synnefo can talk with the backend:

.. code-block:: console

   # result=$(echo -n "synnefo:Ganeti Remote API:example_rapi_passw0rd" | openssl md5)

   # echo "synnefo {HA1} $result" >> /var/lib/ganeti/rapi/users

   # /etc/init.d/ganeti restart

Test your Setup:

++++++++++++++++

In master node run:

.. code-block:: console

   gnt-cluster info

   gnt-node list

   gnt-network list

   gnt-instance list