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Re: [HTCondor-users] PoVB modifications

Hi David:

Unfortunately, there is no easy way to do this. POVB makes all attempts to revert to the installed state upon reboot of the virtual machine (which is why your changes to both the scripts and the primary hard drive are disappearing after installation). 

In order to make the changes persistent, you will have to manually create a virtual machine and attach the primary hard drive (don't go through installer). Then, modify /sbin/povb_hosts to create your /etc/hosts appropriately. You can then deploy this modified povb_primary_hd.vdi (rather than the one that came with the installer) to your classroom computers.


On Thu, Dec 20, 2012 at 6:46 AM, David Gubb U0771649 <U0771649@xxxxxxxxx> wrote:
Hi we are trying to deploy PoVB to the classroom machines and we are trying to modify the povbprimary_hd.vdi.
We want to modify the /etc/hosts file so that we can submit jobs via gLite/EMI to the PoVB Condor pool. This needs
To be done because our internal DNS server does not support reverse DNS look up which is required for the GSI tools.

We have tried modifying the .vdi image before installing PoVB and the changes were overridden when the service restarted.
We have also tried modifying the executable scripts in /povb/sbin but the changes were overridden again when the service was restarted.
We have also modified the .vdi image after installation and the same results

 It is been tested by submitting a job to the Condor pool that simply `cat /etc/hosts`

We are using the povb 2.0.1 64-bit

Does anyone know how to modify PoVB so that it keeps the changes?

David Gubb
System Administrator
University of Huddersfield


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