2016-02-10 05:44:03,780 ERROR nodepool.NodeLauncher: TypeError launching node id: 10 in provider: ord-rackspace error:
Traceback (most recent call last):
  File "/opt/virtualenv/nodepool/lib/python2.7/site-packages/nodepool/nodepool.py", line 406, in _run
    dt = self.launchNode(session)
  File "/opt/virtualenv/nodepool/lib/python2.7/site-packages/nodepool/nodepool.py", line 526, in launchNode
    self.writeNodepoolInfo(nodelist)
  File "/opt/virtualenv/nodepool/lib/python2.7/site-packages/nodepool/nodepool.py", line 596, in writeNodepoolInfo
    f.write(n.ip_private + '\n')
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'