[Openstack-operators] [nova] VM HA support in trunk

Toshikazu Ichikawa ichikawa.toshikazu at lab.ntt.co.jp
Mon Feb 15 15:25:28 UTC 2016

Hi Affan,



I don’t think any components in Liberty provide HA VM support directly.


However, many works are published and open-sourced, here.


You may find ideas and solutions.


And, the discussion on this topic is on-going at HA meeting.






From: Affan Syed [mailto:affan.syed.usc at gmail.com] 
Sent: Monday, February 15, 2016 12:51 PM
To: openstack-operators at lists.openstack.org
Subject: [Openstack-operators] [nova] VM HA support in trunk


reposting with the correct tag, hopefully. Would really appreciate some pointers. 

---------- Forwarded message ---------
From: Affan Syed <affan.syed.usc at gmail.com <mailto:affan.syed.usc at gmail.com> >
Date: Sat, 13 Feb 2016 at 15:13
Subject: [nova] VM HA support in trunk
To: <openstack-operators at lists.openstack.org <mailto:openstack-operators at lists.openstack.org> >


Hi all,

I have been trying to understand if we currently have some VM HA support as part of Liberty?


To be precise, how are host being down due to power failure handled, specifically in terms of migrating the VMs but possibly even their networking configs (tunnels etc). 


The VM migration like XEN-HA or KVM cluster seem to require 1+1 HA, I have read a few places about celiometer+heat templates to launch VMs for an N+1 backup scenario, but these all seem like one-off setups. 



This issue seems to be very much important for legacy enterprises to move their "pets" --- not sure if we can simply wish away that mindset!





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