StarlingX R2 duplex: VM on controller-0 NOT re-spawned on controller-1 after rebooting controller-0.

Bug #1852719 reported by Akshay on 2019-11-15
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
StarlingX
Undecided
Unassigned

Bug Description

Brief Description
-----------------
Setup: I have deployed Bare Metal StarlingX R2 duplex mode. While testing HA, I tested a case in which I have spawned 2 VMs from horizon together on IPv6 flat and IPv6 vlan networks. One gets spawned on controller-0 and other on controller-1. Both VM gets IP assigned on each network and they are able to ping each other.

Test Case: Now I switched off the controller-0 (active node) and the VM on controller-0 gets into re-building state.

Issue 1: But the VM remains in rebuilding state through out the rebooting time taken by controller-0 (Active node) and after successful bootup of Active node, the VM comes up on controller-0 (Active node) only.

Issue 2: Also if controller-0 is switched off, the VM on controller-0 goes for re-building itself but after some time falls into ERROR state as it was trying to re-build on controller-0 which is not available now.

I tried this case many times but out of 10 both the issues were faced near about 1-2 times only.
Please guide me to solve this inconsistent issue.

Severity
--------

Critical

Steps to Reproduce
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1. Deploy Bare Metal StarlingX R2 duplex mode.
2. Spawn 2 VMs together on IPv6 flat and IPv6 vlan from horizon.
3. Switch off the controller-0 (active node).
4. Check the rebuilding process of VM on controller-0.

Expected Behavior
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VM should rebuild itself on other available node.

Actual Behavior
----------------
VM rebuild itself on same node which is rebooted/switched off.

Reproducibility
---------------
NOT exactly, but facing it 1-2 times out of 10.

System Configuration
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Two node system

Last Pass
---------
NO

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