报错
[root@controller ~]# nova list
ERROR (ConnectFailure): Unable to establish connection to http://controller:8774/v2.1: HTTPConnectionPool(host=‘controller‘, port=8774): Max retries exceeded with url: /v2.1 (Caused by NewConnectionError(‘<urllib3.connection.HTTPConnection object at 0x7fad8b89e250>: Failed to establish a new connection: [Errno 111] Connection refused‘,))
[root@controller ~]# less /var/log/nova/nova-api.log
...
ERROR nova ConfigFileValueError: Value for option server_listen from LocationInfo(location=<Locations.user: (4, True)>, detail=‘/etc/nova/nova.conf‘) is not valid: is not a valid host address
...
# 报错很明显 nova.conf 配置有误
原因定位,在使用 "openstack-config --set" 指令配置参数时,
"openstack-config --set /etc/nova/nova.conf vnc server_listen $my_ip" 中 "$my_ip" 被解析错了
吃了没文化的亏
ERROR nova ConfigFileValueError: Value for option server_listen ...
原文：https://www.cnblogs.com/blame9/p/15224364.html