On Wed, 3 Dec 2014 08:44:57 +0100 Roman Dobosz <roman.dobosz at intel.com> wrote: > I've just started to work on the topic of detection if host is alive or > not: https://blueprints.launchpad.net/nova/+spec/host-health-monitoring > > I'll appreciate any comments :) I've submitted another blueprint, which is closely bounded with previous one: https://blueprints.launchpad.net/nova/+spec/pacemaker-servicegroup-driver The idea behind those two blueprints is to enable Nova to be aware of host status, not only services that run on such. Bringing Pacemaker as a driver for servicegroup will provide us with two things: fencing and reliable information about host state, therefore we can avoid situations, where some actions will misinterpret information like service state with host state. Comments? -- Kind regards Roman