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When compute is booted what happens to guests?

asked 2014-11-14 03:34:06 -0500

Openstackuser2013 gravatar image

I am using Icehouse installed on Ubuntu.

If I reboot compute node what happens to the instances that are running on it? Do they get shutdown properly automatically or do I have to shut them down before giving reboot command to the host?

Is it same with all-in-one installation?

I could not find any documentation about this.

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answered 2014-11-14 03:52:14 -0500

Yeah you are right. Same case for all-in-one also. It is better to shutdown the Guest machine before shutting down all-in-one node.

If not, shut downing all-in-one/compute node will automatically force shutdown the Guest machines.

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How is forced shutdown different from giving shutdown command manually?

Openstackuser2013 gravatar imageOpenstackuser2013 ( 2014-11-14 04:07:38 -0500 )edit

Giving shutdown will close all processes smoothly inside Guest machine. For example there is a Opened file in your Guest machine, in hard shutdown you might loose data in that file, not that is not the case in soft shutdown.

TechPatron gravatar imageTechPatron ( 2014-11-14 04:15:05 -0500 )edit

But is force shutdown then different from powering off the machine? ( I mean that does guest operating system get some time to prepare for shutting down.)

Openstackuser2013 gravatar imageOpenstackuser2013 ( 2014-11-14 04:53:48 -0500 )edit

It must like, instead of clicking shutdown down button, pulling the power plug.

Beny gravatar imageBeny ( 2014-11-14 07:42:59 -0500 )edit

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Asked: 2014-11-14 03:34:06 -0500

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Last updated: Nov 14 '14