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Re: [Condor-users] Adding private network nodes to condor



Hi Mark,
Thanks for the info, I have few question if you get a chance could you please let me know.

Basically what I am trying to do is, we have one condor pool and central manager.

Some departments planning to share their resources to condor pool, but hose are in NAT (i.e) only one head node is accessible to public and rest of the nodes are private and cannot reachable by central manager.

By some how but other than setting up a separate pool and flocking the jobs, I need to make those NAT (private IP nodes also part of condor pool, (i.e) should be able to run jobs)

You suggested (in previous mail) doing this in the head node,

CONDOR_HOST = head-hostname.my.private.domain
FULL_HOSTNAME = head-hostname.my.private.domain
NETWORK_INTERFACE = 172.24.116.14

If I do this, then it is like setting up a separate pool right?

Is it possible to make the jobs runs on private nodes through the public head node which has the CONDOR_HOST=condor_pool_central_manager.

Thanks for you help.

Senthil




-----Original Message-----
From: condor-users-bounces@xxxxxxxxxxx [mailto:condor-users-bounces@xxxxxxxxxxx] On Behalf Of Mark Calleja
Sent: Wednesday, June 06, 2007 10:38 AM
To: Condor-Users Mail List
Subject: Re: [Condor-users] Adding private network nodes to condor

Hi Senthil,

What you envisage should certainly be possible; we use a very similar
model here. In our case we have a number of flocked pools, with some
machines running only private IP addresses and others running both
public and private ones. However, Condor is forced to operate over the
private IP addresses *only*. Now, does your head node also have a
private address? It doesn't sound like it from your post, so I'm not
sure what you hope to achieve by setting BIND_ALL_INTERFACES. May I
suggest that you give the head node a private IP address too (it could
be a virtual interface; it doesn't have to have an extra NIC). Let's say
that this private IP address is 172.24.116.14. Then in your head node's
configuration you'd need:

CONDOR_HOST = head-hostname.my.private.domain
FULL_HOSTNAME = head-hostname.my.private.domain
NETWORK_INTERFACE = 172.24.116.14

All your other nodes don't need to nominate a NETWORK_INTERFACE, since
they only have the one. They just need to make sure to set CONDOR_HOST
to the same as above. Your pool should now work entirely via the private
IP addresses. Note that the head node also has a DNS entry in the domain
spanned by the private IP range.

Cheers,
Mark

Natarajan, Senthil wrote:
>
> Hi,
>
> I am trying to add a cluster of machines (with the head node has
> public IP address and accessible to public, other nodes are private
> and can't be accessible to public) to the existing Condor pool.
>
> I installed condor on head node and private nodes, and I added this in
> head node condor_config file
>
> BIND_ALL_INTERFACES = TRUE
>
> But still I couldn't see those private nodes on Condor pool.
>
> How to make those private nodes also part of Condor pool is there any
> better solution to make use of ideal cycles of those private nodes.
>
> Thanks,
>
> Senthil
>
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