[Openstack] Network Config
rvaknin at redhat.com
Tue Jul 30 20:52:25 UTC 2013
On 07/30/2013 11:48 PM, Rami Vaknin wrote:
> On 07/30/2013 04:31 PM, Brandon Adams wrote:
>> Hi all, I'm trying to set up OpenStack using PackStack in a single
>> node configuration, and I believe I'm having some network issues. I
>> think I've narrowed the problem down to a forwarding issue, i.e. the
>> packets meant for 192.168.32.x (Pack Stack default fixed address)
>> aren't being routed correctly. When I tcpdump br100 and try and ping
>> my vm, all that shows up are ARP requests, like:
>> 16:55:52.216132 ARP, Request who-has 192.168.32.2 tell 192.168.32.1,
>> length 28
> Did your instance actually got this address (192.168.32.2)? I assume
> it didn't since if it doesn't answer to arp so it couldn't communicate
> with the dhcp server.
> I would start with the following:
Sorry, it might get ip and still not answer arp in case the arp is for
address differs from what it got.
> 1. Verify that 192.168.32.2 is the instance address (run "nova list"),
> sometimes the second address of the network belongs to the dhcp server.
> 2. Verify that the instance gets its private IP, if not, set it
> manually just for debugging.
> 3. Flush iptables in the compute node and inside the instance's os
> (run "iptables -F" and verify that the chains are on ACCEPT).
> 4. Ping the instance and run tcpdump from inside the instance
> ("tcpdump -i any -s 0 arp -nn").
>> My public interface is eth0, with addresses 192.168.0.xxx, and my
>> flat interface is lo (loopback). I've been following the directions
>> on the site to the letter and it still fails. Does anyone have any
>> suggestions as to what the problem is and how I can solve it? I've
>> pasted some information below, and I can follow up with more as
>> needed. Thanks.
>> ifconfig http://pastebin.com/ZkiTaFSm
>> ip addr http://pastebin.com/ZZ18TVu7
>> nova.conf http://pastebin.com/B2zZRZ2W
>> iptables http://pastebin.com/Gh5psYH3
>> 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
> Rami Vaknin, QE @ Red Hat, TLV, IL.
Rami Vaknin, QE @ Red Hat, TLV, IL.
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