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</o:shapelayout></xml><![endif]--></head><body lang=CS link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>When I need to reboot a compute node (because of some driver lock-up or such problems), I first stop nova-compute so that it does not report the shutoff state of VMs to the database and resume_guests_state_on_host_boot=true does actually start them. Then I press the power switch on the VMs using virsh shutdown, one by one, and only after that I reboot the node. This is a script I scrounged somewhere and modified so that it does not take too much time:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tomas<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>root@cmp03:~# cat vm-shutdown<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>#!/bin/bash<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'># file: /usr/local/sbin/vm-shutdown<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'># Description: shutdown active virtual machines<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>debug=1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>#fake=1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'># Get list of active virtual machines<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>vmList="`virsh list | (<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>while read vmID vmName vmStatus<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>do<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> if [ -n "$vmName" -a "$vmName" != "Name" -a "$vmName" != "Domain-0" ]<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> then<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> [ -z "$vmList" ] && vmList="$vmName" || vmList="$vmList $vmName"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> fi<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>done<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>echo $vmList )`"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'># check there are some active VM's<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>if [ -n "$vmList" ]; then<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> # Shutdown VM's with verification<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> for vmName in $vmList<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> do<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> # send initial request<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> [ -n "$debug" ] && echo -n "Attempting to shutdown $vmName "<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> [ -z "$fake" ] && virsh shutdown $vmName<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> # wait a limited time for the VM to be not running<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> count=30<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> while $( virsh list | grep $vmName >/dev/null ) && [ $count -gt 0 ]<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> do<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> sleep 1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> let count=count-1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> [ -n "$debug" ] && echo -n "."<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> done<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> # report current status<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> ( virsh list | grep $vmName >/dev/null ) && echo " failed!" || echo "down."<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> # if still running, destroy it<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> if ( virsh list | grep $vmName >/dev/null )<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> then<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> [ -n "$debug" ] && echo -n "Attempting to destroy $vmName "<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> [ -z "$fake" ] && virsh destroy $vmName<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> # wait a limited time for the VM to be not running<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> count=30<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> while $( virsh list | grep $vmName >/dev/null ) && [ $count -gt 0 ]<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> do<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> sleep 1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> let count=count-1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> [ -n "$debug" ] && echo -n "."<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> done<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> # report current status<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> ( virsh list | grep $vmName >/dev/null ) && echo " failed!" || echo "down."<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> fi<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> done<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Tzach Shefi [mailto:tshefi@redhat.com] <br><b>Sent:</b> Thursday, November 02, 2017 9:55 AM<br><b>To:</b> Chris<br><b>Cc:</b> openstack@lists.openstack.org<br><b>Subject:</b> Re: [Openstack] Compute Node shutdown how to prevent instance suspend<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi, <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>A better Q would be why do you shutdown a compute node to begin with?<o:p></o:p></p></div><div><p class=MsoNormal>I mean if you need you should do so in an orderly fashion basically excavate instances<o:p></o:p></p></div><div><p class=MsoNormal>or shut instances down manually, put the compute node in maintenance mode. <o:p></o:p></p></div><div><p class=MsoNormal>On rebooting compute node remove it from maintenance mode, turn on instances or migrate them back to this compute node should you need. <o:p></o:p></p></div><div><p class=MsoNormal>Od delete them if you wish. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>There is this nova option:<o:p></o:p></p></div><div><p class=MsoNormal>resume_guests_state_on_host_boot=true<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><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></div><div><p class=MsoNormal>which might also work for you, probably not just mentioning it any way. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I don't know of an option to stop/delete instance on compute node shutdown. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Another option check maybe you could shelve suspended instance and then later delete them. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:#4B4B4B;background:#F7FECC'>Shelving stops the instance and takes a snapshot of it. Then depending on the value of the shelved_offload_time config option, the instance is deleted from the hypervisor (0), never deleted (-1), or deleted after some period of time (> 0). Note that it's just destroying the backing instance on the hypervisor, the actual instance in the nova database is not deleted. Then you can later unshelve the instance:</span><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>This might help, but do not if you mess with kvm without updating Nova you might be left haning else where :)<o:p></o:p></p></div><div><p class=MsoNormal><a href="https://ask.fedoraproject.org/en/question/8796/make-libvirt-to-shutdown-my-guests-not-suspend/">https://ask.fedoraproject.org/en/question/8796/make-libvirt-to-shutdown-my-guests-not-suspend/</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Thu, Nov 2, 2017 at 9:03 AM, Chris <<a href="mailto:contact@progbau.de" target="_blank">contact@progbau.de</a>> wrote:<o:p></o:p></p><p class=MsoNormal>Hello,<br><br>When we shut down a compute node the instances running on it get suspended. This generates some difficulties with some applications like RabbitMQ dont like to be suspended. Is there a way to change this behavior so that the running instances gets killed or shutdown instead?<br><br>Thanks in advance.<br><br>Cheers,<br>Chris<br><br>_______________________________________________<br>Mailing list: <a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack</a><br>Post to : <a href="mailto:openstack@lists.openstack.org" target="_blank">openstack@lists.openstack.org</a><br>Unsubscribe : <a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack</a><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><div><div><div><p style='margin:0cm;margin-bottom:.0001pt'><b><span style='font-size:10.5pt;text-transform:uppercase'>Tzach Shefi<o:p></o:p></span></b></p><p style='margin:0cm;margin-bottom:.0001pt'><span style='font-size:7.5pt;text-transform:uppercase'>Senior Quality Engineer<span style='color:#CCCCCC'>, </span><span style='color:#AAAAAA'>RHCSA</span><o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt'><span style='font-size:7.5pt;color:#999999'><a href="https://www.redhat.com" target="_blank"><span style='font-family:"Arial","sans-serif";color:#0088CE;text-decoration:none'>Red Hat <br><br></span></a><o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt'><span style='font-size:7.5pt;color:#999999'><a href="mailto:tshefi@redaht.com" target="_blank"><span style='font-family:"Arial","sans-serif";color:#0088CE;text-decoration:none'>tshefi@redaht.com</span></a> M: <a href="tel:+972-54-4701080" target="_blank"><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#0088CE;text-decoration:none'>+972-54-4701080</span></a> IM: tshefi<o:p></o:p></span></p><table class=MsoNormalTable border=0 cellpadding=0><tr><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><a href="https://red.ht/sig" target="_blank"><span style='border:solid windowtext 1.0pt;padding:0cm;text-decoration:none'><img border=0 width=90 height=90 id="_x0000_i1025" src="cid:image001.jpg@01D353C6.077BA4D0" alt="Obrázek byl odebrán odesílatelem."></span></a><o:p></o:p></p></td></tr></table><p class=MsoNormal><o:p> </o:p></p></div></div></div></div></div></div></div></body></html>