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<p class="MsoNormal"><b><span style="font-family:Calibri;color:black">></span></b>There is this nova option:<o:p></o:p></p>
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<p class="MsoNormal">>resume_guests_state_on_host_boot=true<o:p></o:p></p>
<p class="MsoNormal">><o:p> </o:p></p>
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<p class="MsoNormal">>But it doesn't delete or shutdown instances but rather turns them on automatically once compute host resumes. <o:p></o:p></p>
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<p class="MsoNormal">>which might also work for you, probably not just mentioning it any way. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Note that you might want to check some things after a reboot before booting up all your instances.<o:p></o:p></p>
<p class="MsoNormal">The easiest way would be to set this value to true but to not start the nova-compute service on boot.<o:p></o:p></p>
<p class="MsoNormal">Now you can check whatever you need and start nova-compute when you know the server is in a good state.<o:p></o:p></p>
<p class="MsoNormal">Nova will now start the instances that where running when your compute node was shutdown.
<o:p></o:p></p>
<p class="MsoNormal">The nice thing about this is that any instances that where shutdown/suspended by users will keep in a shutdown state.<o:p></o:p></p>
<p class="MsoNormal">If you do not do this you would need to create a custom script that saves which instances where running before the shutdown and then use that list to start only the correct instances.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Another thing to consider is if you want to auto-start instances after a compute node did an unexpected reboot.<o:p></o:p></p>
<p class="MsoNormal">IMHO I would rather have a dead instance then an instance running on flaky hard/software but it might depend a bit on your use case.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">>I don't know of an option to stop/delete instance on compute node shutdown. <o:p></o:p></p>
<p class="MsoNormal">As mentioned by some other people this is actually a libvirt setting not a nova setting.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
<p class="MsoNormal">Robert van Leeuwen<o:p></o:p></p>
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