[TriLUG] Semi-OT: vmware vmotion

[Matt Pusateri]

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On Feb 22, 2011, at 8:03 PM, David Black wrote:

> Scripts attached, configurables are at top.  They work for me but surely break for someone (YMMV).
> Revisions/improvements are welcome.
> 
> Two requirements: on each ESXi host - console remote access (ssh) enabled, and passwordless ssh public key in root's .ssh/authorized_keys.
> 
> If you run either script without arguments, usage and info on current registered VMs and in vmove, host CPU and RAM usage, are printed.
> 
> Enjoy.
> 
> Dave
> 
> ----- Original Message -----
>> I would be interested.
>> 
>> In the past, I have used the vcbGhetto scripts when I did not have the
>> licensing for vMotion. Problem is - vcbGhetto and VMWare Data Recovery
>> are problematic and don't often working after a week or so...
>> 
>> 
>> 
>> -Ron
>> rkelleyrtp at gmail.com
>> 
>> On Feb 22, 2011, at 1:17 PM, David Black wrote:
>> 
>>> Getting the inspiration from someone else who wrote a similar script
>>> using the VMware API, I put together a bash script that does a
>>> suspend-unregister-reregister-resume to effect a poor man's vMotion.
>>> It leverages ESXi ssh access and included commands. The downtime
>>> when moving a VM this way is proportional to the amount of RAM in
>>> the VM, typically 5-20 sec for my setup.
>>> 
>>> Like vMotion, the VM must reside in a datastore visible to both
>>> source and destination ESXi hosts.
>>> If the VM must be moved from one datastore to another, that's doable
>>> too but involves an intermediate copy operation (takes longer).
>>> 
>>> If anyone wants, I'd be happy to post or share 'vmove' and a
>>> companion script 'vclone' that clones VMs.
>>> 
>>> Dave
>>> 
>>> ----- Original Message -----
>>>> Jason,
>>>> 
>>>> For vMotion to work, you need the correct license (Enterprise I
>>>> think)
>>>> to enable vMotion *and* a shared storage solution (NFS, shared
>>>> iSCSI,
>>>> or SAN).
>>>> 
>>>> If your two servers only have a locally attached datastore
>>>> (on-board
>>>> SATA/SAS drive), you will not be able to vMotion your VM. The best
>>>> you
>>>> can do is suspend your VM then move the files to the other data
>>>> store.
>>>> 
>>>> 
>>>> Thanks,
>>>> 
>>>> -Ron
>>>> rkelleyrtp at gmail.com
>>>> 
>>>> On Feb 22, 2011, at 12:42 PM, Jason Evans wrote:
>>>> 
>>>>> Hi all,
>>>>> 
>>>>> I've got 2 servers both running esxi 4.1 each with 1 datastore.
>>>>> I'm
>>>>> trying to get vmotion to work between the two servers with the VM
>>>>> powered on without creating a go-between NFS share. In vshpere, I
>>>>> have a datacenter (XYZ) created and under the datacenter, I have
>>>>> cluster (ABC) created. In the cluster is host 1 and host 2. The VM
>>>>> is running RHEL5 and the goal is to migrate it from host 1 to host
>>>>> 2
>>>>> without shutting it down. All of the documentation that I've seen
>>>>> says that an NFS share must be created or an external LUN must be
>>>>> connected to for this to work. Is there another way of doing this?
>>>>> Thanks.
>>>>> 
>>>>> Best Regards,
>>>>> Jason
>>>>> --
>>>>> This message was sent to: Ron Kelley <rkelleyrtp at gmail.com>
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>>>> 
>>>> --
>>>> This message was sent to: David Black <dave at jamsoft.com>
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>>>> from
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>>> 
>>> --
>>> A wise and frugal government, ... which shall leave men free to
>>> regulate their own pursuits of industry and improvement, and shall
>>> not take from the mouth of labor the bread it has earned - this is
>>> the sum of good government. - Thomas Jefferson, First Inaugural
>>> Address, March 4, 1801.
>>> 
>>> --
>>> This message was sent to: Ron Kelley <rkelleyrtp at gmail.com>
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>> 
>> --
>> This message was sent to: David Black <dave at jamsoft.com>
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>> that address.
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> 
> -- 
> A wise and frugal government, ... which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government. - Thomas Jefferson, First Inaugural Address, March 4, 1801. 
> 
> -- 
> This message was sent to: M. Pusateri <mpusateri at wickedtrails.com>
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