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博客地址：http://blog.csdn.net/qq_21398167

原博文地址：http://blog.csdn.net/qq_21398167/article/details/46987669


突然有一天使用 nova list  出现错误了


root@openstackcloud1:~# nova list

ERROR:HTTPConnectionPool(host=‘openstackcloud1‘, port=35357):Max retries exceededwith url:/v2.0/tokens(Causedby<class‘socket.error‘>:[Errno111]Connection refused)

原因是  nova-api service   没有启动起来

结果启动 还失败了


# service openstack-nova-api restart
Redirecting to /bin/systemctl restart  openstack-nova-api.service
Job for openstack-nova-api.service failed. See ‘systemctl status openstack-nova-api.service‘ and ‘journalctl -xn‘ for details.

通过查询错误日志 /var/log/nova/nova-api.log


看到例如以下错误：


2015-07-21 04:11:30.800 6879 ERROR nova.wsgi [-] Could not bind to 0.0.0.0:8775

原因是

openstack-nova-api and openstack-nova-metadata-api both run on the same port so you are getting "Address already in use" error.Try stopping "openstack-nova-metadata-api" service and run "openstack-nova-api".

仅仅需两步

# service openstack-nova-metadata-api stop


# service openstack-nova-api restart

成功了


[root@localhost Desktop]# service openstack-nova-metadata-api stop
Redirecting to /bin/systemctl stop  openstack-nova-metadata-api.service
[root@localhost Desktop]# service openstack-nova-api restart
Redirecting to /bin/systemctl restart  openstack-nova-api.service