[Openstack] dnsmasq stops talking to instances?
Nathanael Burton
nathanael.i.burton at gmail.com
Fri Oct 19 18:31:41 UTC 2012
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 at seas.harvard.edu>
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 at seas.harvard.edu> |
> 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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