check your /etc/hosts make sure your controller IP address pointing to your controller hostname, next also check your firewall/iptables. On Fri, Dec 30, 2016 at 3:02 PM, dongjh at ahope.com.cn <dongjh at ahope.com.cn> wrote: > *Hi everybody,* > > *Have you seen the following issue?* > > [admin at controller ~]$ neutron ext-list > Unable to establish connection to http://controller:9696/v2.0/ > extensions.json: HTTPConnectionPool(host='controller', port=9696): Max > retries exceeded with url: /v2.0/extensions.json (Caused > by NewConnectionError('<requests.packages.urllib3. > connection.HTTPConnection object at 0x2480990>: Failed > to establish a new connection: [Errno 111] Connection refused',)) > > ------------------------------ > ========================================= > 董 建 华 > 地址：杭州滨江区南环路3766号新世纪办公楼 > 邮编：310053 > 手机：13857132818 <(385)%20713-2818> > 总机：0571-28996000 > 传真：0571-28996001 > 热线：4006728686 > 网址：www.ahope.com.cn > Email：dongjh at ahope.com.cn > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/ > openstack > Post to : openstack at lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/ > openstack > > -- Cheers, [image: --] Adhi Priharmanto [image: http://]about.me/a_dhi <http://about.me/a_dhi?promo=email_sig> +62-812-82121584 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20161230/fe623df4/attachment.html>