[lxc-users] Migrating LXD VMs/containers between nodes

[Dilvan Moreira]

Hi,

   Ganeti seems interesting, does it run LXD? If so, can you point me to
some documentation showing how to set it up (I could only find information
about running Xen or KVM)?

--
Dilvan de Abreu Moreira, Ph.D.     dilvan at gmail.com
http://java.icmc.usp.br
Warning: I use a spam filter, some emails sent to me CAN be lost!

On Wed, Nov 25, 2015 at 3:50 PM, Bostjan Skufca <bostjan at a2o.si> wrote:

> ... or the one from Georg:
>
> https://lists.linuxcontainers.org/pipermail/lxc-users/2015-November/010417.html
>
> On 25 November 2015 at 18:48, Bostjan Skufca <bostjan at a2o.si> wrote:
>
>> I recently asked a similar questions (did not mention rdb though that was
>> exactly what I had in my mind:), maybe you will find Stephane's answer
>> informative:
>>
>> https://lists.linuxcontainers.org/pipermail/lxc-users/2015-November/010414.html
>>
>> b.
>>
>>
>> On 25 November 2015 at 16:40, Dilvan Moreira <dilvan at gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I am setting up a small cluster using a VM (master) and 3 bare metal
>>> servers (all running Ubuntu 14.04). Each bare metal server also has 2T of
>>> disk space exported using Ceph 0.94.5
>>> <http://docs.ceph.com/docs/v0.94.5/start/>.
>>>
>>> I would like to be able to run LXD VMs (containers) on this cluster and
>>> to easily migrate these VMs to different nodes. I could have installed
>>> OpenStack, but that seems rather complicated to me (maybe OpenStack is an
>>> overkill for such a small cluster like mine). So, my solution was to create
>>> a big Ceph/rbd block volume and mount it at the LXD container folder (
>>> /var/lib/lxd/containers) in all nodes. To move a VM, I just shut it
>>> down in one node and then start it again in another.
>>>
>>> For just one VM it's working fine, but it doesn't seem to me as a long
>>> term solution. My questions:
>>>
>>>    1.
>>>
>>>    Is there a way to pass a block volume (Ceph/rbd) or folder to a LXD
>>>    VM, so LXD itself would mount the root folder (/)? It would be nice
>>>    to have a block volume for each VM (and not all VMs using the same folder).
>>>    2.
>>>
>>>    Is there a simpler solution than OpenStack for my use case (or a
>>>    simpler installation procedure for OpenStack)?
>>>    3.
>>>
>>>    Ultimately, I would like my cluster to have the ability to schedule
>>>    VMs to nodes, move VMs from failed nodes, etc. Any suggestions on how to
>>>    get that?
>>>
>>> --
>>> Dilvan de Abreu Moreira, Ph.D.     dilvan at gmail.com
>>> http://java.icmc.usp.br
>>> Warning: I use a spam filter, some emails sent to me CAN be lost!
>>>
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>>
>>
>
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