Hi Wangpan, 2. We were dealing with same thing few weeks ago... Solved it by running another instance of dnsmasq as dns resolver on our control-node. As long as you have small environment as we do, it is pretty simple to keep one /etc/hosts up to date.
Regards, Marek Ruzicka System Engineer (Storage) T-Systems Slovakia s.r.o. www.t-systems.sk -----Original Message----- From: openstack-bounces+marek.ruzicka=t-systems...@lists.launchpad.net [mailto:openstack-bounces+marek.ruzicka=t-systems...@lists.launchpad.net] On Behalf Of Wangpan Sent: 20. augusta 2012 10:02 To: openstack Subject: [Openstack] [Nova] hostname vs hostIP in live-migration Hi all, I have a doubt about the configuration of live-migration, when we want to use the live-migration feature, we show change /etc/hosts on every host, so they can establish connection with each other by "hostname", if we don't of forget to do this, the live-migration will fail. and also I have look into the source code of nova, it uses hostname everywhere instead of hostIP. So my questions are listed below, 1. Why nova use hostname instead of hostIP ? 2. If there are many compute Nodes, we should change the /etc/hosts on every node, and if we want to add one compute Node, we also need to change the /etc/hosts of every node, I think this isn't flexible or convenient, is there any good ideas? should I configure a DNS server instead of modifing the /etc/hosts? 3. I want to modify the source code to change the original implementation by add the hostIP to the table 'services' in nova database, so I can get the hostIP by querying this table using 'host' as the filter, then I needn't to modify the /etc/hosts or add a DNS server to support live-migration. is this a feasible plan? Many Thanks, Wangpan _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
