[torqueusers] qstat via ssh port forwarding

Kevin Van Workum vanw at tticluster.com
Thu Oct 25 11:51:18 MDT 2007


I'm trying to run qstat on my localhost to query a pbs_server on a
remote cluster. I have ssh access to the 'login' server on the remote
cluster. The pbs_server is running on separate machine (torque) at the
remote site. I can run 'qstat @torque' from the remote login server.
My question is how do I setup the port forwarding correctly to get
qstat to run on my local machine. I tried the following but it doesn't
work even though tcpdump show the packets reaching the pbs_server
machine (torque). Maybe I'm using the wrong port or need to forward
some more ports?

For example:

[kevin at localhost cmds]$ ssh -L 15001:torque:15001 -N login &
[1] 9133
[kevin at localhost cmds]$ ./qstat @localhost
No Permission.
qstat: cannot connect to server localhost (errno=15007)

[root at torque ~]# tcpdump tcp port 15001
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
13:43:30.475376 IP login.54769 > torque.15001: S
2101652975:2101652975(0) win 5840 <mss 1460,sackOK,timestamp
1525634279 0,nop,wscale 5>
13:43:30.475396 IP torque.15001 > login.54769: S
2061961280:2061961280(0) ack 2101652976 win 5792 <mss
1460,sackOK,timestamp 71517784 1525634279,nop,wscale 2>
13:43:30.475486 IP login.54769 > torque.15001: . ack 1 win 183
<nop,nop,timestamp 1525634279 71517784>
13:43:30.519458 IP login.54769 > torque.15001: F 1:1(0) ack 1 win 183
<nop,nop,timestamp 1525634323 71517784>
13:43:30.519494 IP torque.15001 > login.54769: F 1:1(0) ack 2 win 1448
<nop,nop,timestamp 71517828 1525634323>
13:43:30.519609 IP login.54769 > torque.15001: . ack 2 win 183
<nop,nop,timestamp 1525634323 71517828>


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