時間不一樣會導致xxx狀態，但是時間問題只會出現在compute節點，controller節點或者沒有問題的情況下就要考慮其它的了
[root@controller ~]# neutron agent-list
+--------------------------------------+--------------------+------------+-------------------+-------+----------------+---------------------------+
| id | agent_type | host | availability_zone | alive | admin_state_up | binary |
+--------------------------------------+--------------------+------------+-------------------+-------+----------------+---------------------------+
| 1576ae04-aff3-45af-8a5e-d83f84c78555 | DHCP agent | controller | nova | :-) | True | neutron-dhcp-agent |
| 2a21a914-d1cb-4b37-a8f1-4b295403ac8c | Linux bridge agent | compute | | :-) | True | neutron-linuxbridge-agent |
| 88d5d470-f5d3-41b7-a600-9d7fdcddc930 | Metadata agent | controller | | :-) | True | neutron-metadata-agent |
| db07bd42-504e-4b7c-b5a6-badbcd0547ef | Linux bridge agent | controller | | xxx | True | neutron-linuxbridge-agent |
| e3606dd1-ed63-4f66-b3db-fdeafdf5ffa7 | L3 agent | controller | nova | :-) | True | neutron-l3-agent |
+--------------------------------------+--------------------+------------+-------------------+-------+----------------+---------------------------+
查看linuxbridge-agent.log日誌
[root@controller ~]# tail -f /var/log/neutron/linuxbridge-agent.log
2017-11-16 11:16:15.733 16752 INFO neutron.common.config [-] Logging enabled!
2017-11-16 11:16:15.734 16752 INFO neutron.common.config [-] /usr/bin/neutron-linuxbridge-agent version 8.1.2
2017-11-16 11:16:15.734 16752 INFO neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-] Interface mappings: {'provider': 'eno1677'}
2017-11-16 11:16:15.734 16752 INFO neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-] Bridge mappings: {}
2017-11-16 11:16:15.743 16752 ERROR neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-] Interface eno1677 for physical network provider does not exist. Agent terminated!
2017-11-16 11:17:22.144 16846 INFO neutron.common.config [-] Logging enabled!
2017-11-16 11:17:22.146 16846 INFO neutron.common.config [-] /usr/bin/neutron-linuxbridge-agent version 8.1.2
2017-11-16 11:17:22.147 16846 INFO neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-] Interface mappings: {'provider': 'eno1677'}
2017-11-16 11:17:22.147 16846 INFO neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-] Bridge mappings: {}
2017-11-16 11:17:22.166 16846 ERROR neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-] Interface eno1677 for physical network provider does not exist. Agent terminated!
Interface eno1677 for physical network provider does not exist. Agent terminated!
就是說eno1677網絡提供商接口不存在，這個報錯就很明顯
linuxbridge_agent.ini配置文件下
[linux_bridge]
physical_interface_mappings = provider:這個網卡名字錯了找不到
解決方法：改成自己的網卡名字就是
