Rebooting APF's computers
=========================

There are a total of seven computers in the APF. In case of a power
down, or to reboot them, they need to be brought up in a specific
order. First, bring up the three windows machines, in the order
below. Then start the four linux computers.


EOS and EOST machines
---------------------

There are three (3) APF computers from EOS(T).  Each machine runs
Windows/XP. The order in which they need to be rebooted is the order
of the list below.

  #. dcc - This is the master. EOS controls the dome and everything else
  #. tcc - This is the telescope control computer. EOST
  #. agc - This is the guider computer. EOST

.. figure:: Dome_control_PC_2.JPG
   :scale: 100 %
   :width: 720px
   :alt: The monitor for the Dome Control Computer
   
   The monitor for the Dome Control Computer

Rebooting the dcc
^^^^^^^^^^^^^^^^^

The recommended process for rebooting the dcc is to connect via remote
desktop. From there, reboot using the Cntrl-Alt-Del key combination.

**Important**

After restarting the dcc check:

#. The cooling system and the fan control units are in the correct state.


Rebooting the tcc and agc
^^^^^^^^^^^^^^^^^^^^^^^^^

Using the ``eosSystemManagementInterface``, reboot the tcc and agc.

Restarting EOS services
^^^^^^^^^^^^^^^^^^^^^^^

Using the ``eosSystemManagementInterface``, examine the services on
each machine, namely the dcc, the tcc and agc. Services on the tcc and
agc can be easily restarted. dcc services, however, can be controlled
only at a granular level. Restarting some services will, in effect,
stop the  ``eosSystemManagementInterface`` forcing a restart. 


Linux hosts
-----------

There are four (4) APF from computers that running Linux. These should
be booted in the order below.


  #. hamburg - most apf services are hosted here
  #. warsaw - this hosts the UCAM
  #. dresden - this is the guider computer
  #. mainz - this is the user facing machine

.. figure:: hamburg.JPG
   :scale: 50 %
   :width: 500px
   :alt: Hamburg and Warsaw in the electronics rack.
   
   Hamburg and Warsaw in the electronics rack.

The easiest way to restart each machine is to log in 
as root and use the /sbin/reboot command.