- Improves job scheduling using state/event-driven logic
- Reduced database and cpu load, by reducing all background threads to one
- Improves Simulator and KVM host-ha integration tests
- Triggers VM HA on successful host (ipmi reboot) recovery
- Improves internal datastructures and checks around HA counter
- New FSM events to retry fencing and recovery
- Fixes KVM activity script to aggresively check against last update time
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Host-HA offers investigation, fencing and recovery mechanisms for host that for
any reason are malfunctioning. It uses Activity and Health checks to determine
current host state based on which it may degrade a host or try to recover it. On
failing to recover it, it may try to fence the host.
The core feature is implemented in a hypervisor agnostic way, with two separate
implementations of the driver/provider for Simulator and KVM hypervisors. The
framework also allows for implementation of other hypervisor specific provider
implementation in future.
The Host-HA provider implementation for KVM hypervisor uses the out-of-band
management sub-system to issue IPMI calls to reset (recover) or poweroff (fence)
a host.
The Host-HA provider implementation for Simulator provides a means of testing
and validating the core framework implementation.
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Rohit Yadav
Rohit Yadav