[GE users] qlogin / ssh (ultimately, X forwarding)

rumpelkeks tina.friedrich at diamond.ac.uk
Wed Feb 3 17:07:27 GMT 2010


Hi,

reuti wrote:
> Am 03.02.2010 um 17:34 schrieb rumpelkeks:
> 
>> Right. I've reverted the config for my test node, and started over
>> again. This is what I did / what happens; maybe I am doing it wrong  
>> and
>> someone can tell me where.
>>
>> With no extra configuration, qlogin (and qrsh) work.
>>
>> Now I add the following configuration to the host:
>>
>> [kdf51254 at pc030 tmp]$ qconf -sconf cs04r-sc-com04-15
>> #cs04r-sc-com04-15.diamond.ac.uk:
>> xterm             /usr/bin/xterm
>> qlogin_daemon     /usr/sbin/sshd -i
>> rsh_daemon        /usr/sbin/sshd -i
>> rlogin_daemon     /usr/sbin/sshd -i
>> qlogin_command    /dls_sw/apps/sge/SGE6.2/DLS/common/qlogin_wrapper
>> rsh_command       /usr/bin/ssh -X
>> rlogin_command    /usr/bin/ssh -X
> 
> The qrsh_command from the issuing machine must match the qrsh_daemon  
> of the target machine. The "pc030" has also a local configuration or  
> is using the global one?

Is using the global one, I believe - at least it tells me so if I use a 
reverted-config-normal-working-qlogin:

[kdf51254 at pc030 ~]$ qlogin -q test.q
local configuration pc030.sc.diamond.ac.uk not defined - using global 
configuration

(Maybe I should add a note about our setup, though I'm not sure it's 
important here - we don't have a head node or something. All cluster 
nodes route, the SGE_ROOT is on a central NFS share, all workstations we 
have are submit hosts. So this pc030 is simply my normal workstation. Oh 
and the cluster nodes don't all sit on the same network, and it is 
always a different network from where the workstations are. That 
shouldn't be a problem though?)

About the global/local configuration again, the node will of course have 
a local configuration once I try to use ssh instead of builtin; because 
I add one to define the qlogin_daemon etc. As I had understood this this 
should work - I did not want all nodes in the queue to use the ssh method.

Tina

>> <snip>
>>
>> Also, is it normal I seem to have to ssh into the node and restart
>> sge_execd whenever I change the config (using qconf -mconf)? It never
>> seems to pick them up, and I thought it should?
> 
> I faced a similar effect:
> 
> http://gridengine.sunsource.net/issues/show_bug.cgi?id=2361
> 
> and it will take some seconds anyway when tampering the global  
> configuration.
> 
> -- Reuti
> 
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> 


-- 
Tina Friedrich, Computer Systems Administrator, Diamond Light Source Ltd
Diamond House, Harwell Science and Innovation Campus - 01235 77 8442

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