[Users] Linux sysprep

[Ade]

http://libguestfs.org/virt-sysprep.1.html
http://linux.die.net/man/1/virt-sysprep


On 19 August 2013 18:12, Louis Coilliot <louis.coilliot at think.fr> wrote:

> I DO this, sorry.
>
>
> 2013/8/19 Louis Coilliot <louis.coilliot at think.fr>
>
>> Hello,
>>
>> I usually does this :
>>
>> http://www.kermit.fr/lofic/snipper/20/
>>
>> Regards,
>>
>> Louis Coilliot
>>
>>
>> 2013/8/19 René Koch (ovido) <r.koch at ovido.at>
>>
>> Hi,
>>>
>>> Has anyone an idea what's the easiest way to sysprep Linux (CentOS 6 and
>>> RHEL 6) machines?
>>>
>>> The use case is the following: I want to create a lot of virtual
>>> machines (e.g. 100) by cloning from one template.
>>> So I create a master vm, create a template and a pool with 100 vms
>>> assigned to it and set all 100 vms to prestarted.
>>>
>>> The problem is now, that when I run "sys-unconfig" before creating the
>>> template, which does a "touch /.unconfigured" I have to go through the
>>> sysconfig-tui and set a new root password for all 100 hosts.
>>>
>>> So what I'm looking for is a script like the sysprep tool for windows
>>> which sets parameters for me automatically.
>>> I only need to change:
>>> * Hostname + set DHCP_HOSTNAME in ifcfg-eth0 (Hostname == Pool-VM-Name)
>>> for some dhcp/ddns magic :)
>>> * Clear udev network-rules
>>> * remove SSH-Keys
>>> * Remove RHN ID and join Satellite/Spacewalk-server
>>> * root-password,... should stay the same
>>>
>>> My first question is: does oVirt provide such a functionality for Linux
>>> guest out-of-the-box? I couldn't find one.
>>>
>>>
>>> I think I could solve this with virt-sysprep and virt-file, but I'm
>>> unsure if I can use it with oVirt (or only with plain libvirt):
>>> http://libguestfs.org/virt-sysprep.1.html
>>> http://libguestfs.org/virt-edit.1.html
>>>
>>> For this tools it's required that the vm is not running, as it changes
>>> files on the disk. If I'm using a before-vm-start hook, it should be
>>> save to access the disk and change content with virt-sysprep/virt-file,
>>> right?
>>> But do I have access to the disk in a before-vm-start hook?
>>> If using NFS storage I should be able to access all disks on the
>>> NFS-share, but for iSCSI/FC-LUNS - are they available on the hypervisor
>>> in this stage?
>>>
>>>
>>> Another option would be to write a custom script which is started during
>>> boot and disables itself after successful run (in the same way as
>>> firstboot - I already have such a script for RHN Satellite/Spacewalk
>>> joins). The problem here is: How do I get the (oVirt) name of this vm
>>> (would need something like virt-whoami :) )? Is the (internal oVirt) ID
>>> of this vm stored somewhere in the filesystem of this vm? I don't think
>>> so....
>>>
>>>
>>> Thanks a lot for suggestions,
>>> René
>>>
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>
>>
>
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