Hello, I have been through the lists and have seen a couple of posts
similar to this.  I have tried the resolutions but to no avail.

Here is my oscar environment:

1) 1 head node and 22 computes (all running rhel4 u4, using oscar 5.0)
2) oscar installation went well, computes functioning fine
3) head node:  2 nics, eth0 external 130.127.X.X, eth1 172.16.0.100,
running NAT for computes traffic outside the network
4) head and computes are NIS and NFS clients

Operability:

1) head node and computes can mount nfs drives and ypbind starts for NIS
2) NIS users can log in (although ypbind has started to become sporatic).
3) NIS users can submit jobs to PBS.

Situation:

1) Using head node LOCAL root account, ssh'ing into computes starts to get
slow after setting up NIS.  CEXEC also is very slow.
2) When login to computer as local root, get

do_ypcall: clnt_call: RPC: Timed out

3) Also get

do_ypcall: clnt_call: RPC: Timed out; errno=cannot send

Questions:

NIS is functional.  Users can log in.  Cexec is basically inoperable, too
slow.  Has someone had this problem?  I know I might get a iptables
response (NFS and NIS is operational, so packets are going outside the
cluster).  Is there an OSCAR setting that might be slowing cexec down?  Or
is something else?

NOTE:  NO computes have /etc/resolv.conf.  I saw a solution to something
like this.  All computes can ping NIS server and NFS servers.

Thanks for any help.

Vince


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