Cron <pet at wagner> PATH=$HOME/pet:$PATH petd (failed)

[Cron Daemon]

Traceback (most recent call last):
  File "/home/pet/pet/petd", line 18, in <module>
    import pet.models
  File "/srv/home/pet/pet/pet/models.py", line 41, in <module>
    metadata.reflect(bind=engine)
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/schema.py", line 2355, in reflect
    conn = bind.contextual_connect()
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/engine/base.py", line 2328, in contextual_connect
    self.pool.connect(), 
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/pool.py", line 209, in connect
    return _ConnectionFairy(self).checkout()
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/pool.py", line 370, in __init__
    rec = self._connection_record = pool._do_get()
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/pool.py", line 696, in _do_get
    con = self._create_connection()
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/pool.py", line 174, in _create_connection
    return _ConnectionRecord(self)
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/pool.py", line 255, in __init__
    self.connection = self.__connect()
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/pool.py", line 315, in __connect
    connection = self.__pool._creator()
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/engine/strategies.py", line 80, in connect
    return dialect.connect(*cargs, **cparams)
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/engine/default.py", line 275, in connect
    return self.dbapi.connect(*cargs, **cparams)
sqlalchemy.exc.OperationalError: (OperationalError) could not connect to server: No such file or directory
	Is the server running locally and accepting
	connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
 None None