Open Stack

anytime this happend with me I do the following.

create a lost_instance.xml with the content below(I think it's possible to
create a simpler file, with less content) just to register a VM with
libvirt. Make sure to change the <name></name> tag. In your case


<domain type='kvm'>
  <name>instance-0000002a</name>
  <memory unit='KiB'>4194304</memory>
  <currentMemory unit='KiB'>4194304</currentMemory>
  <vcpu placement='static'>4</vcpu>
  <os>
    <type arch='x86_64' machine='pc-1.0'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/bin/kvm</emulator>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x1'/>
    </controller>
    <controller type='usb' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x2'/>
    </controller>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes'/>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
function='0x0'/>
    </memballoon>
  </devices>
</domain>


save and exit

and then
# virsh define lost_instance.xml
# service nova-compute restart

it's easier then mess with the database.



On Thu, Dec 13, 2012 at 8:56 AM, Razique Mahroua
<razique.mahroua at gmail.com>wrote:

> I think the instance ID is the database ID (base 8) encoded in base 16.
>  0x2A = ID 52 into the database.
> Did you updated the ID 52 ?
>
> I may be wrong ^^
>
> *Razique Mahroua** - **Nuage & Co*
> razique.mahroua at gmail.com
> Tel : +33 9 72 37 94 15
>
>
> Le 13 déc. 2012 à 11:51, Joe Warren-Meeks <joe.warren.meeks at gmail.com> a
> écrit :
>
> It turned out to be that last one. What I don't understand is where
> openstack found the instance id from. That doesn't exist in the database,
> or anywhere on the file system I could find.
>
> Kind regards
>
>  -- joe.
>
>
> On 13 December 2012 10:27, Razique Mahroua <razique.mahroua at gmail.com>wrote:
>
>> Hey Joe,
>> yes, several solutions there
>> First, check if the domain exists by running
>> $ virsh list --all (supposing you use libvirt)
>>
>> check /var/lib/nova/instances/instance-0000002a
>> if the dir. exists $cd into it and run "virsh define libvirt.xml"
>> then restart nova-compute
>>
>> If the dir. doesn't exist, you may want to update the nova database,
>>  figure out your instance entry within the "instances" table and update the
>> field "deleted" to 1
>>
>> Regards,
>> *Razique Mahroua** - **Nuage & Co*
>>  razique.mahroua at gmail.com
>> Tel : +33 9 72 37 94 15
>>
>> <NUAGECO-LOGO-Fblan_petit.jpg>
>>
>> Le 12 déc. 2012 à 17:07, Joe Warren-Meeks <joe.warren.meeks at gmail.com> a
>> écrit :
>>
>> Hi guys,
>>
>> You think you have Openstack working, then you cough and it all breaks.
>>
>> I'm getting the following error when trying to start nova-compute after a
>> reboot of the compute node (to install non-related patches)
>>
>> libvirtError: Domain not found: no domain with matching name
>> 'instance-0000002a'
>>
>> Now, I've dumped all the DBs to disk and grepped through it for '00002a'
>> and grep -R'ed /etc/ and /var/
>>
>> I can't find any reference to that anywhere, but it is causing
>> nova-compute to fail to start.
>>
>> Anyone know how to fix that? If not, anyone know a cloud platform that
>> isn't made from very thin glass, pre-shattered for your pleasure?
>>
>>  -- joe.
>>
>> _______________________________________________
>> Mailing list: https://launchpad.net/~openstack
>> Post to     : openstack at lists.launchpad.net
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>>
>>
>>
>
>
> _______________________________________________
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>


-- 
*guilherme* \n
\t *maluf*
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