Thanks, Kris. I'm going to see if there's any oddities between the version of dnsmasq packaged with 12.04/Icehouse and systemd-dhcp.
On Tue, Jan 27, 2015 at 9:25 AM, Kris G. Lindgren <klindg...@godaddy.com> wrote: > I can't help as we use config-drive to set networking and are just > starting to roll out Cent7 vm's. However, a huge change from Cent6 to > Cent7 was the switch from upstart/dhclient to systemd/systemd-dhcp. > ____________________________________________ > > Kris Lindgren > Senior Linux Systems Engineer > GoDaddy, LLC. > > > > From: Joe Topjian <j...@topjian.net> > Date: Tuesday, January 27, 2015 at 9:08 AM > To: "openstack-operators@lists.openstack.org" < > openstack-operators@lists.openstack.org> > Subject: [Openstack-operators] RHEL 7 / CentOS 7 instances losing their > network gateway > > 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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