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(Dang gmail never does reply-all...)


On Wed, Apr 3, 2013 at 4:41 PM, Lorin Hochstein <lorin at nimbisservices.com>wrote:

> I've tested with multiple ones, including the CentOS6 image from that
> page, as well as several we have rolled on our own.
>
> Right now I'm testing by manually putting on the IP by doing:
>
> ip addr add 10.40.0.4/16 broadcast 10.40.255.255 dev eth0
>
> I can't ping out at all. If I try to arping out, and then tcpdump, just
> like in the DHCP case, I can see the ARP request and replies on vnet0 of
> the host:
>
> root at c220-2:~# tcpdump -i vnet0 arp
> tcpdump: WARNING: vnet0: no IPv4 address assigned
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> 16:34:42.109067 ARP, Request who-has 10.40.0.1 (Broadcast) tell 10.40.0.4,
> length 28
> 16:34:42.109085 ARP, Request who-has 10.40.0.1 (Broadcast) tell 10.40.0.4,
> length 28
> 16:34:42.109216 ARP, Reply 10.40.0.1 is-at 54:78:1a:86:50:c9 (oui
> Unknown), length 46
>
>
> But if I tcpdump on eth0 in the guest, I only see the arp requests, not
> the replies..
>
>
> Lorin
>
>
> On Wed, Apr 3, 2013 at 4:26 PM, Joe Topjian <joe.topjian at cybera.ca> wrote:
>
>> What CentOS images are you using? These have worked for me:
>>
>> https://github.com/rackerjoe/oz-image-build
>>
>>
>> On Wed, Apr 3, 2013 at 2:13 PM, Lorin Hochstein <lorin at nimbisservices.com
>> > wrote:
>>
>>> Hi Joe:
>>>
>>> It happens immediately thereafter. CentOS images have never worked on
>>> our setup.
>>>
>>> Lorin
>>>
>>>
>>> On Wed, Apr 3, 2013 at 3:30 PM, Joe Topjian <joe.topjian at cybera.ca>wrote:
>>>
>>>> Hi Lorin,
>>>>
>>>> Does this happen shortly after the guests were created? Or usually a
>>>> few hours/days later? If the latter, are these guests seeing large amounts
>>>> of bandwidth?
>>>>
>>>> Thanks,
>>>> Joe
>>>>
>>>>
>>>> On Wed, Apr 3, 2013 at 1:16 PM, Lorin Hochstein <
>>>> lorin at nimbisservices.com> wrote:
>>>>
>>>>> Hi all:
>>>>>
>>>>> I'm having a strange issue where networking on my CentOS guests isn't
>>>>> working properly, but things are working fine with my Ubuntu guests.
>>>>>
>>>>> I'm running Folsom on Ubuntu 12.04, nova-network, not multi-host.
>>>>>
>>>>> The first symptom is that CentOS instances don't get IP addresses via
>>>>> DHCP. If I trace the DHCP requests and replies using tcpdump, I can see the
>>>>> reply from dnsmasq reach the vnetX interface of the compute host, but it
>>>>> doesn't get to the eth0 interface of the compute host. (I'm at a loss here
>>>>> about how to debug something like that).
>>>>>
>>>>> If I try to statically configure an IP address on the guest instead,
>>>>> networking still doesn't work. I can't ping anything on the subnet, and I
>>>>> don't even see the icmp traffic on vnetX of the host.
>>>>>
>>>>> I've tried this twiddling the following options, but no change in
>>>>> behavior:
>>>>>
>>>>> * Adding the following rule to nova-network node: iptables -A
>>>>> POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill
>>>>> * Adding the same rule to nova-compute node
>>>>> * Setting libvirt_use_virtio_for_bridge to "yes" and "no" (restarting
>>>>> nova-compute, re-launching instances)
>>>>> * With and without vhost_net loaded in nova-compute (restarting
>>>>> nova-compute, re-launching instances)
>>>>> * Disabling iIpv6 inside of the CentOS guest
>>>>>
>>>>> Has anybody encountered this before?
>>>>>
>>>>> Lorin
>>>>>
>>>>> --
>>>>> Lorin Hochstein
>>>>> Lead Architect - Cloud Services
>>>>> Nimbis Services, Inc.
>>>>> www.nimbisservices.com
>>>>>
>>>>> _______________________________________________
>>>>> OpenStack-operators mailing list
>>>>> OpenStack-operators at lists.openstack.org
>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Joe Topjian
>>>> Systems Administrator
>>>> Cybera Inc.
>>>>
>>>> www.cybera.ca
>>>>
>>>> Cybera is a not-for-profit organization that works to spur and support
>>>> innovation, for the economic benefit of Alberta, through the use
>>>> of cyberinfrastructure.
>>>>
>>>
>>>
>>>
>>> --
>>> Lorin Hochstein
>>> Lead Architect - Cloud Services
>>> Nimbis Services, Inc.
>>> www.nimbisservices.com
>>>
>>
>>
>>
>> --
>> Joe Topjian
>> Systems Administrator
>> Cybera Inc.
>>
>> www.cybera.ca
>>
>> Cybera is a not-for-profit organization that works to spur and support
>> innovation, for the economic benefit of Alberta, through the use
>> of cyberinfrastructure.
>>
>
>
>
> --
> Lorin Hochstein
> Lead Architect - Cloud Services
> Nimbis Services, Inc.
> www.nimbisservices.com
>



-- 
Lorin Hochstein
Lead Architect - Cloud Services
Nimbis Services, Inc.
www.nimbisservices.com
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