The workers don't need their own copy of galaxy installed, but a shared filesystem is a requirement for galaxy (in any cluster environment -- see the galaxy wiki for more http://wiki.galaxyproject.org/Admin/Config/Performance/Cluster). Cloudman handles managing NFS for you and sharing the galaxy/tools/index/data volumes. In order for workers to communicate with the master instance, they'll need the cloudman installation as well, so you should use the same image.
Now that I've answered that, I'm not sure I totally understand your proposed installation yet, but if you're suggesting bypassing cloudman for installation on a private cloud it should be possible. You'd want the master instance up full time running as the galaxy front end, dispatching jobs to a separate cluster managed by SGE/PBS/whatever. Basically the standard cluster configuration outlined in the wiki above, but you'd want your worker nodes automatically configured to mount the shared directories and join the PBS/SGE queue so they could handle jobs.
Depending on what type of private cloud you're working with, it might be easier to just see if you can get cloudman to work :)
Lastly, I swapped this message to galaxy-dev since it's about installation nuts and bolts.
-Dannon
On Feb 8, 2013, at 3:02 AM, Zeeshan Ali Shah <zashah@pdc.kth.se> wrote:
> Dear Enis, thanks for reply and being you as cloudman developer it is good to see you in the list .
>
> Q2: On Workers node we need galaxy installed with its shared directories ? like galaxyindices , galaxydata
> Q3: For a private cloud setup do you prefare to have a master image with cloudman and galaxy and use the same image for workers as well ? or worker images can be vanilla OS ?
>
>
> BR
>
> Zeeshan
>
> On W6-Feb 7, 2013, at 11:50 PM, Enis Afgan wrote:
>
>> Hi Zeeshan,
>> In order to gain from the scalability of the cloud, SGE does need to run. However, CloudMan sets all that up and manages it going forward.
>>
>> Enis
>>
>>
>> On Fri, Feb 8, 2013 at 8:59 AM, Zeeshan Ali Shah <zashah@pdc.kth.se> wrote:
>> Hi,
>>
>> It seems that cloud man need SGE for scaling . Does SGE need also when run cloud on private cloud ?
>>
>> Zeeshan
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> ___________________________________________________________
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> at usegalaxy.org. Please keep all replies on the list by
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>
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