Re: [Openqrm-user] grab image help

[Matt R. <m.r...@t-...>]

Hi Longina,

On 10/15/2010 03:19 PM, Longina Przybyszewska wrote:
> Hi,
> still making test for my presentation - in hopeless state!
>
> I have fresh installed Ubuntu Lucid machine 'kvm-1' with  kvm
> virtualization(/,swap,lvm partitions)
>
> 1. I would like to make a server-template from this machine for later
>   	image deployment.
> 2. then I would make tests with it as local-server KVMhost
> 3. then PXE-boot and test as openQRM-appliance-KVMhost
> 4. then try cloud computing with KVMhost made in step 3.
> 5. then try to grab image from physical server and deploy it on both
>   	virtual platform and then the other way round.
>
> I stack on 1 - step - making server-template - making ImageShelf plugin.
>
> I would like to have a  ImageShelf with some local templates on
> openQrm itself - shall I use local-type?
>    

nope, an nfs-based storage type. Either nfs-storage or lvm-storage (nfs)

> Could it be ordinary directory e.g /images where I put templates (build by
> debootstrap/dd/tar)?

yes, an "image" in openQRM just needs to be a valid root-filesystem

> What about  /boot dir - is it overwrited by
> openQrm when making image from template?
>    

yes, depending on the deployment type (e.g. netboot) the kernel and 
initrd is provided via the network

> What formats 'get' accept?
> I am frustrated about documentation - I had to reinstall server several
> times trying understand concept and to implement my test - and still no
> remarkable progress ;(.
>    

ok, very easy. Assume you have a running server somewhere in your network.
- login to one of your system (can be any, no need to do this on openQRM)
- Then run the following commands to get and pack the image.

mkdir -p /root/myserver
cd /root/myserver
rsync -avz -e ssh [your-running-servers-ip]:/ --exclude=/proc 
--exclude=/sys .
mkdir proc sys
tar -cvzf ../myserver.tar.gz *

-> Then you e.g. can put myserver.tar.gz on your image-shelf and add it 
to the image-shelf.conf.

You can also create an nfs-volume on a nfs-based storage server 
(nfs-storage and/or lvm-storage(nfs)) and then rsync directly to the volume.
Create an image out of the volume and there you go.
If you have the image on nfs you then can use "install-from" or 
"transfer-to" to any other storage type in openQRM

hope it helps + have a nice day,

Matt Rechenburg
Project Manager openQRM

> Thanks in advance for any help
> Longina
>
>       --
> Longina Przybyszewska
> IT-Service,
> University of Southern Denmark,
> Campusvej 55,
> DK-5230 Odense M, Denmark
> Phone Direct: +45 6550 2359
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>
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