All,
Currently OpenStack does not have a built-in HA mechanism for tenant
instances which could restore virtual machines in case of a host
failure. Openstack assumes every app is designed for failure and can
handle instance failure and will self-remediate, but that is rarely
In short, what we'll need from nova is to have 100% reliable
host-health monitor and equally reliable rebuild/evacuate mechanism
with fencing and scheduler. In heat we need scallable and reliable
event listener and engine to decide which action to perform in given
situation.
On 09/17/2014 09:03 AM, Jastrzebski, Michal wrote:
In short, what we'll need from nova is to have 100% reliable
host-health monitor and equally reliable rebuild/evacuate mechanism
with fencing and scheduler. In heat we need scallable and reliable
event listener and engine to decide which
Excerpts from Jastrzebski, Michal's message of 2014-09-17 06:03:06 -0700:
All,
Currently OpenStack does not have a built-in HA mechanism for tenant
instances which could restore virtual machines in case of a host
failure. Openstack assumes every app is designed for failure and can
handle
