clustering

[Robert Casey]

I have the following situation and wondered if anyone has any experience 
with this and can point me in the right direction. I'm trying to set up a 
Beowulf cluster and all machines are running either Red Hat 7.1 or 7.2. 
There are 5 computers including the head node plus one system which is the 
NIS server for the head node. The head node is a NIS client and also the 
NIS slave server. The head node also exports the home directory for the NIS 
network. The head node has two network cards, one for the main network 
155.?.?.? and the other is 192.168.1.?. This is way over my head and I'll 
have to do a lot of reading but is there a way the slave nodes, which are 
on the 192 network, can see the 155 network so I don't have to create all 
the users on each slave node to match user id and group id. I hope I'm 
explaining this correctly but I'm sure you'll let me know if not.

Thanks,

Bob Casey


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Re: clustering

[Kenneth E. Lussier]

I can say with all certainty that I know absolutly nothing about
clustering. Never want to, either. It makes my head hurt However,
this sounds like a simple networking setup. The head node would have to
act as a gateway/router. First, turn on IP forwarding (echo 1 
/proc/sys/net/ipv4/ip_forward). Then set up NAT using ipfilter/ipchains,
unless the 155 network knows about the 192 network and knows how to
route back to it. Also, all of the systems on the 192 net will have to
use the head node as their gateway.

C-Ya,
Kenny

On Fri, 2002-07-26 at 16:08, Robert Casey wrote:
 I have the following situation and wondered if anyone has any experience 
 with this and can point me in the right direction. I'm trying to set up a 
 Beowulf cluster and all machines are running either Red Hat 7.1 or 7.2. 
 There are 5 computers including the head node plus one system which is the 
 NIS server for the head node. The head node is a NIS client and also the 
 NIS slave server. The head node also exports the home directory for the NIS 
 network. The head node has two network cards, one for the main network 
 155.?.?.? and the other is 192.168.1.?. This is way over my head and I'll 
 have to do a lot of reading but is there a way the slave nodes, which are 
 on the 192 network, can see the 155 network so I don't have to create all 
 the users on each slave node to match user id and group id. I hope I'm 
 explaining this correctly but I'm sure you'll let me know if not.
 
 Thanks,
 
 Bob Casey
 
 
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-- 

Tact is just *not* saying true stuff -- Cordelia Chase

Kenneth E. Lussier
Sr. Systems Administrator
Zuken, USA
PGP KeyID CB254DD0 
http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0xCB254DD0



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Re: clustering

[pll]

 On Fri, 26 Jul 2002, Robert == Robert Casey wrote:

  Robert is there a way the slave nodes, which are on the 192
  Robert network, can see the 155 network so I don't have to create
  Robert all the users on each slave node to match user id and group
  Robert id.

Set up IP forwarding on the master node which has 2 NICs.  You should 
be able to set up ipchains to do this easily enough, and I'm sure 
anyone here who has a cable modem or xDSL at home can probably help :)
-- 

Seeya,
Paul
--
It may look like I'm just sitting here doing nothing,
   but I'm really actively waiting for all my problems to go away.

  Have you appreciated your SysAdmin today?
 http://www.sysadminday.com/

 If you're not having fun, you're not doing it right!



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