Open Stack

Hi George,

All instances have only a single interface.

Thanks,
Joe

On Tue, Jan 27, 2015 at 1:38 PM, George Shuklin <george.shuklin at gmail.com>
wrote:

>  How many network interfaces have your instance? If more than one - check
> settings for second network (subnet). It can have own dhcp settings which
> may mess up with routes for the main network.
>
>
> On 01/27/2015 06:08 PM, Joe Topjian wrote:
>
> Hello,
>
>  I have run into two different OpenStack clouds where instances running
> either RHEL 7 or CentOS 7 images are randomly losing their network gateway.
>
>  There's nothing in the logs that show any indication of why. There's no
> DHCP hiccup or anything like that. The gateway has just disappeared.
>
>  If I log into the instance via another instance (so on the same subnet
> since there's no gateway), I can manually re-add the gateway and everything
> works... until it loses it again.
>
>  One cloud is running Havana and the other is running Icehouse. Both are
> using nova-network and both are Ubuntu 12.04.
>
>  On the Havana cloud, we decided to install the dnsmasq package from
> Ubuntu 14.04. This looks to have resolved the issue as this was back in
> November and I haven't heard an update since.
>
>  However, we don't want to do that just yet on the Icehouse cloud. We'd
> like to understand exactly why this is happening and why updating dnsmasq
> resolves an issue that only one specific type of image is having.
>
>  I can make my way around CentOS, but I'm not as familiar with it as I am
> with Ubuntu (especially CentOS 7). Does anyone know what change in
> RHEL7/CentOS7 might be causing this? Or does anyone have any other ideas on
> how to troubleshoot the issue?
>
>  I currently have access to two instances in this state, so I'd be happy
> to act as remote hands and eyes. :)
>
>  Thanks,
> Joe
>
>
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