建立selfservice網路時報錯：

[root@controller ~]# openstack network create selfservice
Error while executing command: HttpException: Unknown error, {"NeutronError": {"message": "Unable to create the network. No tenant network is available for allocation.", "type": "NoNetworkAvailable", "detail": ""}}
 

在dashboard上建立網路報同樣錯誤：

檢視neutron日誌：

[[email protected] ~]# cat /var/log/neutron/server.log
2018-06-11 11:09:00.505 5569 ERROR neutron.pecan_wsgi.hooks.translation     raise exc.NoNetworkAvailable()
2018-06-11 11:09:00.505 5569 ERROR neutron.pecan_wsgi.hooks.translation NoNetworkAvailable: Unable to create the network. No tenant network is available for allocation.
2018
 
-06-11 11:09:00.505 5569 ERROR neutron.pecan_wsgi.hooks.translation

google查詢原因：
https://access.redhat.com/solutions/756453，這裡提到 tunnel_id_ranges = 1:1000。
解決問題：

[[email protected] ~]# vim /etc/neutron/plugins/ml2/ml2_conf.ini
[ml2_type_vxlan]

#

vni_ranges = 1:1000   #在配置檔案中增加vni_ranges = 1:1000