[BUG] Dashboard报错：if usages['subnets']['available'] <= 0: KeyError: 'available'

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Openstack版本号：Liberty

系统平台：CentOS 7.2 64bit

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1.现象：

管理员登陆Dasgboard,查看项目》网络》网络》选择一个网络》选择一个子网》查看网络ID，例如以下：

查看httpd日志报错例如以下：

tail -f /etc/httpd/logs/error_log[Tue Apr 12 10:24:08.830778 2016] [:error] [pid 94866] Error while checking action permissions.[Tue Apr 12 10:24:08.830848 2016] [:error] [pid 94866] Traceback (most recent call last):[Tue Apr 12 10:24:08.830854 2016] [:error] [pid 94866] ??File "/usr/lib/python2.7/site-packages/horizon/tables/base.py", line 1270, in _filter_action[Tue Apr 12 10:24:08.830859 2016] [:error] [pid 94866] ????return action._allowed(request, datum) and row_matched[Tue Apr 12 10:24:08.830862 2016] [:error] [pid 94866] ??File "/usr/lib/python2.7/site-packages/horizon/tables/actions.py", line 135, in _allowed[Tue Apr 12 10:24:08.830866 2016] [:error] [pid 94866] ????self.allowed(request, datum))[Tue Apr 12 10:24:08.830873 2016] [:error] [pid 94866] ??File "/usr/share/openstack-dashboard/openstack_dashboard/wsgi/../../openstack_dashboard/dashboards/project/networks/subnets/tables.py", line 103, in allowed[Tue Apr 12 10:24:08.830883 2016] [:error] [pid 94866] ????if usages[‘subnets‘][‘available‘] <= 0:[Tue Apr 12 10:24:08.830899 2016] [:error] [pid 94866] KeyError: ‘available‘

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2.问题解决：

改动/usr/share/openstack-dashboard/openstack_dashboard/dashboards/project/networks/subnets/tables.py源码例如以下：

class CreateSubnet(SubnetPolicyTargetMixin, CheckNetworkEditable, ??????????????????tables.LinkAction): ???name = "create" ???verbose_name = _("Create Subnet") ???url = "horizon:project:networks:addsubnet" ???classes = ("ajax-modal",) ???icon = "plus" ???policy_rules = (("network", "create_subnet"),) ???def get_link_url(self, datum=None): ???????network_id = self.table.kwargs[‘network_id‘] ???????return reverse(self.url, args=(network_id,)) ???def allowed(self, request, datum=None): ???????usages = quotas.tenant_quota_usages(request) ???????if usages[‘subnets‘].get(‘available‘, 1) <= 0: ???????????if ‘disabled‘ not in self.classes: ???????????????self.classes = [c for c in self.classes] + [‘disabled‘] ???????????????self.verbose_name = _(‘Create Subnet (Quota exceeded)‘) ???????else: ???????????self.verbose_name = _(‘Create Subnet‘) ???????????self.classes = [c for c in self.classes if c != ‘disabled‘] ???????return True

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