[Openstack] instances loosing IP address while running, due to No DHCPOFFER

Nathanael Burton nathanael.i.burton at gmail.com
Fri Jun 15 00:50:34 UTC 2012


FWIW I haven't run across the dnsmasq bug in our environment using EPEL
packages.

Nate
On Jun 14, 2012 7:20 PM, "Vishvananda Ishaya" <vishvananda at gmail.com> wrote:

> Are you running in VLAN mode? If so, you probably need to update to a new
> version of dnsmasq.  See this message for reference:
>
> http://osdir.com/ml/openstack-cloud-computing/2012-05/msg00785.html
>
> Vish
>
> On Jun 14, 2012, at 1:41 PM, Christian Parpart wrote:
>
> Hey all,
>
> I feel really sad with saying this, now, that we have quite a few
> instances in producgtion
> since about 5 days at least, I now have encountered the second instance
> loosing its
> IP address due to "No DHCPOFFER" (as of syslog in the instance).
>
> I checked the logs in the central nova-network and gateway node and found
> dnsmasq still to reply on requests from all the other instances and it even
> got the request from the instance in question and even sent an OFFER, as
> of what
> I can tell by now (i'm investigating / posting logs asap), but while it
> seemed
> that the dnsmasq sends an offer, the instances says it didn't receive one
> - wtf?
>
> Please tell me what I can do to actually *fix* this issue, since this is
> by far very fatal.
>
> One chance I'd see (as a workaround) is, to let created instanced retrieve
> its IP via dhcp, but then reconfigure /etc/network/instances to continue
> with
> static networking setup. However, I'd just like the dhcp thingy to get
> fixed.
>
> I'm very open to any kind of helping comments, :)
>
> So long,
> Christian.
>
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