Open Stack

I believe that either have your customers design their apps to handle
failures or have tools that are reactive to failures.

Unfortunately like many other private cloud operators we deal a lot with
legacy applications that aren't scaled horizontally or fault tolerant and
so we've built tooling to handle customer notifications (reactive). When we
lose a compute host we generate a notice to customers and then work on
evacuating their instances. For the evac portion nova host-evacuate or
host-evacuate-live work fairly well, although we rarely get a functioning
floating-IP after host-evacuate without other work.

Getting adoption of heat or other automation tooling to educate customers
is a long process, especially when they're used to VMware where I think
they get the VM HA stuff for "free".


On Mon, Feb 15, 2016 at 8:25 AM, Toshikazu Ichikawa <
ichikawa.toshikazu at lab.ntt.co.jp> wrote:

> Hi Affan,
>
>
>
>
>
> I don’t think any components in Liberty provide HA VM support directly.
>
>
>
> However, many works are published and open-sourced, here.
>
> https://etherpad.openstack.org/p/automatic-evacuation
>
> You may find ideas and solutions.
>
>
>
> And, the discussion on this topic is on-going at HA meeting.
>
> https://wiki.openstack.org/wiki/Meetings/HATeamMeeting
>
>
>
> thanks,
>
> Kazu
>
>
>
> *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>
> Date: Sat, 13 Feb 2016 at 15:13
> Subject: [nova] VM HA support in trunk
> To: <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!
>
>
>
> Affan
>
>
>
>
>
> _______________________________________________
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20160215/7462444d/attachment.html>