[Ssh-sftp-perl-users] Query about using NET::SSH::Perl

[lalitha v. <lal...@ya...>]

Hi
I am a newbie to working with perl modules for
load/job scheduling across clusters. I am trying to
use Net::SSH::Perl to check whether I am able to
connect to one of the nodes in our cluster before
sending a job to it.

I am using it in tandem with the CPAN module ,
Schedule::Load. Hence for the node with the most
resources available,(provided by Schedule::Load), I
wish to check whether the node is still accepting
incoming SSH connections using Net::SSH.I am trying to
schedule upto 40,000 different jobs on a cluster of 35
nodes.

Due to system settings and certain nodes being more
occupied than the other, when Schedule::Node
presistently returns a certain node as the "best node"
for running a job, I sometimes find that the node does
not accept incoming ssh connections (possibly due to
the large number of ssh connections already open).

I would appreciate if you could let me know whether
any of Net::SSH's functions return an error message
which tell me whether the node is PRESENTLY accepting
incoming ssh connections or is throwing a msg
"Connection closed by remote host"

Thanks
Viswanath

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