Re: [Rdo-list] 10 days of rdo manager

On 04/20/2015 03:42 PM, James Slagle wrote: > On Mon, Apr 20, 2015 at 06:49:27PM +0100, Pedro Sousa wrote: >> Hi, >> >> I haven't played with it yet, but I would like to know what happens to >> overcloud nodes when you reboot/loose or break your undercloud node. >> >> Do overcloud nodes loose ip connectivity? My understanding is that >> overcloud nodes get dhcp from Neutron. Or do I need to have some HA for >> undercloud in place? > > With the network architecture we're moving towards, overcloud nodes will only > get dhcp from Neutron for the provisioning network. The api, data, storage, etc > network will support static IP configuration, or possibly, non-Neutron provided > dhcp. > > Further, after initial provisioning, overcloud nodes will boot off the local > disk instead of pxe booting via Neutron on subsequent reboots. localboot > support is a relatively new feature in upstream Ironic, and we'll be enabling > it soon in rdo-manager. > > With these changes, when the undercloud is stopped or goes down unexpectedly > the overcloud would be unaffected. That being said, we still plan to have an HA > undercloud at some point in the future. > > Also, the current virt-setup that allows testing rdo-manager via deploying the > undercloud and overcloud all on vm's still relies on the undercloud vm to > continue to run for connectivity to overcloud nodes. That could also be > enhanced though to not require the undercloud vm to stay up. > > When a node is configured for local boot, does it get a static IP address? Maybe it turns the DHCP address into a static? Or does it still rely on the undercloud for DHCP?