Feature of reboot instances after, for instance, a power failure

This is a good place to as for new features.

I assume you are asking to restart an instance when the NC (node controller) got rebooted, since any other components reboot should not impact a running instance (a part from a network outage while the CC -- cluster controller -- gets restarted).

There are a lot of third parties tools that does exacly what you asking for (rightscale, enstratus comes to mind and it is easiliy implementable with some scripting), and the best that Eucalyptus could do, would be to restart the instance as it was started (no EBS, unclear if we can get the userdata again etc ..). In short a lot of context is lost from Eucalyptus point of view.

Could you explain a use case where this feature would be useful and not implementable otherwise?

As i said, i know there are other ways to get around with a NC reboot or
Power Off. But see my case, here in my university, we intend to do a IaaS
Cloud with eucalyptus, to handle the basic services we got (LDAP,
webserver, print server, and others), besides to offer self service
provisioning to the professors and researchers. But in fact, we have a lot
of trouble with Power Loss, just for a few minutes but it turns off all the
servers. In this case, i wish i could just reboot all the instances the was
running before the power loss.

Again, i know there are many ways to get around this, but it seems, to me,
that this would be a good built-in feature to eucalyptus, with no need of
third parties tools, that just makes the architecture as a whole more
complex.

Anyway, thanks for the attention and congratulations for the great job you
guys are doing.

On 21 December 2011 16:28, graziano obertelli <email address hidden>wrote:

> This is a good place to as for new features.
>
> I assume you are asking to restart an instance when the NC (node
> controller) got rebooted, since any other components reboot should not
> impact a running instance (a part from a network outage while the CC --
> cluster controller -- gets restarted).
>
> There are a lot of third parties tools that does exacly what you asking
> for (rightscale, enstratus comes to mind and it is easiliy implementable
> with some scripting), and the best that Eucalyptus could do, would be to
> restart the instance as it was started (no EBS, unclear if we can get
> the userdata again etc ..). In short a lot of context is lost from
> Eucalyptus point of view.
>
> Could you explain a use case where this feature would be useful and not
> implementable otherwise?
>
> ** Changed in: eucalyptus
> Importance: Undecided => Wishlist
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/907332
>
> Title:
> Feature of reboot instances after, for instance, a power failure
>
> Status in Eucalyptus:
> New
>
> Bug description:
> I think would be great if we can reboot instances after, for example,
> a power failure of the cloud servers. I know that there are many ways
> to do data and configuration persistent on the cloud (EBS, custom
> images, puppet/chef/juju/...), but i think this feature of reboot
> instances after a power failure would keep the things simple. It is
> just a suggestion of a new feature for future versions, i saw
> something like this on openstack and sounded like a good idea to me.
>
> Thanks guys, you are doing a great job!
>
> PS: i dont know if this is the right place suggest a new feature, but
> if it is not, im sorry.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/eucalyptus/+bug/907332/+subscriptions
>

--
*MSc. Eng. Jônata Tyska Carvalho*
Engenheiro de Computação - Mestre em Modelagem Computacional
Telefone (+55) 53 9959.4874
Analista de TI do Centro de Ciências Computacionais - FURG
Sócio fundador da ElefanTI Tecnologia da Informação - www.elefanti.com.br

This issue is now being tracked upstream at http://eucalyptus.atlassian.net/browse/EUCA-2787

Please watch that issue for further updates.