Jeremy, I don't fully understand your question. You say you are interested in HostHA specifically but then you ask about restarting VMs when a host dies. This would not be safe as we can't be sure a host really dies unless you have HostHA enabled. Consequently you can't guarantee the VM won't suddenly re-apear when the host is seen running again. So keep these things separated. HostHA is for rebooting suspect hosts, not for moving VMs around. I am not aware of the connection between the two, that you seem to look for.
On Fri, Jun 11, 2021 at 11:03 AM Jeremy Hansen <jer...@skidrow.la> wrote: > > I’m trying to play with HA. I’ve enabled it via the interface but the HA > state is labeled as Ineligible. > > I’m specifically interested in this: > > HA for Hosts > > The user can specify a virtual machine as HA-enabled. By default, all > virtual router VMs and Elastic Load Balancing VMs are automatically > configured as HA-enabled. When an HA-enabled VM crashes, CloudStack detects > the crash and restarts the VM automatically within the same Availability > Zone. HA is never performed across different Availability Zones. CloudStack > has a conservative policy towards restarting VMs and ensures that there > will never be two instances of the same VM running at the same time. The > Management Server attempts to start the VM on another Host in the same > cluster. > > > My assumption is if a VM Host dies, whatever guests that were running on > that host would automatically move to an available VM host. Maybe I’m > misinterpreting. > > Thanks > -jeremy > -- Daan
