Michael,
Thanks for the response. My colleague has tried those things and they
did not seems to help. The "ssh -vvv" command does not provide any
output and presumably just hangs somewhere in the connection process.
Just as some information... If we set up the the compute node to
connect to DCHP over the external MIT network (not through the switch),
I was able to get two way communication (through the MIT network). This
seems to imply that it is some wrong with the static IP setup or
something related to the switch. However, the one-way communication is
puzzling. I don't think we have a gateway specified for the head node
internal IP address, only the IP (192.168.0.1) and subnet mask
(255.255.255.0). Could that be the source of any problems?
We will continue to try to diagnose the problem, but any more insight
would be welcomed. Thanks,
Rob
Michael Edwards wrote:
Do you have the firewall on the head node turned off?
You can check by doing "iptables -L" or checking under the "security
level" utility.
You can also try doing "ssh -vvv [EMAIL PROTECTED] " and see if it gives
you any clues.
On 10/25/07, *Robert Wilson Ashcraft* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Hi,
I am attempting to set up an OSCAR cluster. I have gotten through
everything
past step 7, Complete CLuster Setup (which finished successfully).
However, when I run the cluster tests, I get several failures,
most noticibly
with the node--> server communication.
This is also confirmed by the fact that I can SSH to a node, but
when I am
logged into the node, I cannot SSH back into the server (it just
hangs... no
error message, but I can ctrl-C out of it)
Do you have any idea why the SSH from the client to server would
not be working?
I have a feeling that if this problem is solved, the other failed
test will work
themselves out.
I am attaching the oscarinstall.log file in case that helps.
Here is my /etc/hosts file if that helps:
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 <http://127.0.0.1> localhost.localdomain localhost
192.168.0.1 <http://192.168.0.1> pharos.mit.edu
<http://pharos.mit.edu> pharos oscar_server nfs_oscar pbs_oscar
18.80.7.242 <http://18.80.7.242> pharos.mit.edu
<http://pharos.mit.edu> pharos
# These entries are managed by SIS, please don't modify them.
192.168.0.100 <http://192.168.0.100> oscarnode01.mit.edu
<http://oscarnode01.mit.edu> oscarnode01
Thanks for your help.
Rob Ashcraft
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