[GE users] SGE in dynamic IP

Reuti reuti at staff.uni-marburg.de
Tue Aug 8 07:17:26 BST 2006


Hi,

Am 08.08.2006 um 04:54 schrieb Nano Surbakti:

> Hi,
>
> Resuming the topic, I want to ask: is it a must that each execution
> hosts have a hostname? Can I use just the IP address?
> I'm thinking of making a small script on the execution hosts (which
> has dynamic IP) that send notification to the master hosts each time
> the IP changed; and then the master hosts update the execution hosts
> table, or something like that.
> Is it possible to do that? How hard would it be?

isn't this all a security risk, where anyone on the net setting up a  
NFS client (as being root on his own machine) could mount your /home?  
You would have to export it to a bunch of addresses, when these are  
just addresses inside the university.

-- Reuti


>
> Thanks in advance,
>
> --
> Nano Surbakti
>
> On 8/7/06, Nano Surbakti <nano.surbakti at gmail.com> wrote:
>> Yup.. those grid hosts have to access internet.. :(
>> This admin is the strict one, can't negotiate with him (I've tried).
>> But I will try again to  negotiate with him and my thesis supervisor.
>>
>> Thanks.
>>
>> --
>> Nano Surbakti
>>
>> On 8/7/06, tmac <tmacmd at gmail.com> wrote:
>> > Do the grid hosts have to access the internet?
>> > Make your own dhcp network NAT'd from a single IP.
>> > I think your admin should work with you at least a little to  
>> allow you to
>> > use DHCP and let him use the DHCP server to assign specific IP  
>> addresses to
>> > specific MAC addresses. It is not that difficult to impliment  
>> and you would
>> > not be stealing anything from the DHCP pool since you are using  
>> the same
>> > number of hosts either way...
>> >
>> > --tmac
>> >
>> >
>> > On 8/6/06, Nano Surbakti <nano.surbakti at gmail.com> wrote:
>> > >
>> >  On 8/6/06, Reuti <reuti at staff.uni-marburg.de> wrote:
>> > > Hi,
>> > >
>> > > Am 06.08.2006 um 08:23 schrieb Nano Surbakti:
>> > >
>> > > > Hi,
>> > > >
>> >  > > Is it possible to setup a cluster from computers which  
>> receive IP from
>> > > > DHCP? The DHCP server is setup so it gives the different IP  
>> everytime
>> > > > the computer reboot.
>> > > > The most I can do is to use a computer in the server room  
>> (which has
>> > > > static IP) and install the master there. Those computers  
>> (with dynamic
>> > > > IP) are sun solaris 9, on sun sparc 64 bit; and the one in  
>> server room
>> > > > (with static IP) is linux on x86.
>> > >
>> > > although you are getting the TCP/IP address by DHCP, the DHCP  
>> server
>> > > can also bet set up to deliver always the same address for a
>> > > specified MAC-address. This way you can get both: a static  
>> address
>> > > delivered by DHCP.
>> > >
>> > > HTH - Reuti
>> >
>> > I've consulted with the admin on that department, and he said  
>> that is
>> > not allowed, because it against their network policy... too bad.
>> > Is there any way to setup SGE with one static master host, and  
>> several
>> > dynamic execute hosts?
>> > Thanks for the reply.
>> >
>> > --
>> > Nano Surbakti
>> >
>> >  
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>> >
>> >
>> >
>> >
>>
>
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