Horizon または Neutron でネットワークを作成するとエラーが発生する

Solution Verified - Updated -

Issue

  • horizon から新しいネットワークを作成すると、Unable to create the network. No tenant network is available for allocation. メッセージが発生します。
  • server.log に例外が投げられます。

    2015-11-23 19:55:25.987 5239 ERROR neutron.api.v2.resource [req-02e6d8d9-4ce2-4685-8261-7f27dc63d881 None] create failed
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource Traceback (most recent call last):
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/resource.py", line 87, in resource
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource     result = method(request=request, **args)
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/base.py", line 448, in create
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource     obj = obj_creator(request.context, **kwargs)
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/plugin.py", line 513, in create_netwo
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource     network)
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 105, in wrapper
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource     return f(*args, **kwargs)
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/plugin.py", line 509, in _create_netw
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource     return self._create_network_db(context, network)
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/plugin.py", line 499, in _create_netw
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource     tenant_id)
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/managers.py", line 160, in create_net
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource     segment = self.allocate_tenant_segment(session)
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/managers.py", line 192, in allocate_t
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource     raise exc.NoNetworkAvailable()
    2015-11-23 19:55:25.987 5239 TRACE neutron.api.v2.resource NoNetworkAvailable:Unable to create the network.No tenant network is available for allocation.
    

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