openstack team mailing list archive

[Nathanael Burton <nathanael.i.burton@xxxxxxxxx>]

I've noticed similar behavior where dnsmasq stops working if nova-network
is restarted without first killing all the dnsmasq processes.
On Oct 19, 2012 10:24 AM, "Lars Kellogg-Stedman" <lars@xxxxxxxxxxxxxxxx>
wrote:

> On Thu, Oct 18, 2012 at 06:16:07PM +0100, Ronivon Costa wrote:
> >    I have noticed a similar behaviour, for example when the
> switch/router is
> >    rebooted. I am able to recover the communications with the VMs
> restarting
> >    nova network (no need to kill dnsmasq).
>
> There are no network devices being rebooted here...and since we're
> running in multi_host mode, both dnsmasq and the affected instances
> are running *on the same physical system*.
>
> It happened again last night -- which means we were without networking
> on our instances for about seven hours -- and restarting nova-network
> doesn't resolve the problem.  It is necessary to first kill dnsmasq
> (and allow nova-network to restart it).
>
> There are no errors being logged by dnsmasq; started just after 2AM,
> all of the "DHCPREQUEST ..." traffic just stops, and the logs after
> that point look like this:
>
> Oct 19 02:02:34 stack-1 dnsmasq[32013]: read /etc/hosts - 2 addresses
> Oct 19 02:02:34 stack-1 dnsmasq[32013]: read
> /var/lib/nova/networks/nova-br662.conf
> Oct 19 02:02:35 stack-1 dnsmasq[32013]: read /etc/hosts - 2 addresses
> Oct 19 02:02:35 stack-1 dnsmasq[32013]: read
> /var/lib/nova/networks/nova-br662.conf
> Oct 19 02:03:12 stack-1 dnsmasq[32013]: read /etc/hosts - 2 addresses
> Oct 19 02:03:12 stack-1 dnsmasq[32013]: read
> /var/lib/nova/networks/nova-br662.conf
>
> ...until I restart things.
>
> --
> Lars Kellogg-Stedman <lars@xxxxxxxxxxxxxxxx>  |
> Senior Technologist                           |
> http://ac.seas.harvard.edu/
> Academic Computing                            |
> http://code.seas.harvard.edu/
> Harvard School of Engineering                 |
>   and Applied Sciences                        |
>
>
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