Re: [Ssh-sftp-perl-users] net-ssh-perl 1.30, "connection refused" dumping script..

[Nick E. <Nic...@pg...>]

<sigh> I found that wrapping the "new" method with an "eval {}" does
the trick, also wrapping the login in a second eval catches other
possible errors. This works for my purpose of simply dropping to telnet
for that host.

I learned me something new. :)

Nick
PS: My code sample

sub get_config_ssh{
  $hostname = @_[0];
  print "Connecting SSH to: $hostname... ";
  use Net::SSH::Perl;

  eval {
  $ssh = Net::SSH::Perl->new("$hostname");
  };

  if($@) {
  print "\n\n\nHOLD THE PHONE, SSHD not available!!\n\n\n";
  }
   
  $ssh->login("me",pass");
  ($out, $err, $exit) = $ssh->cmd("show ver");
  print "out:\n $out\n\nerr:\n$err\n\nexit:\n\$exit\n\n";

} 
 


Nick Ellson
Infrastructure Specialist
PGE, Network Operations Center
Personal: (503) 464-2995
Network Trouble: (503) 464-8754
"Educating Layer 8, one user at a time."

>>> "Nick Ellson" <Nic...@pg...> 08/09/2006 7:28 AM >>>

I have a net--telnet script that collects data from Cisco devices, and
it's pretty basic. I am adding ssh v1 &v2 support so I can collect
data
from devices that force Cisco's SSH version on that device. So far, as
long as the device answers to ssh, it was a pretty easy task. But if
the
system has no ssh ability, and I hit it with the script, it dies and
kills my script. 

I have not done much error handling with scripts, so I was hoping I
could get some ideas on how to allow my script to recover from this
connection failure and let me drop to a telnet attempt.

I suppose I could do a test before calling the ssh module, see if
tcp/22 is answering, but net::telnet does a nice job of providing an
error of it cannot connect, does net::ssh::perl do that?

Nick



Nick Ellson
Infrastructure Specialist
PGE, Network Operations Center
Personal: (503) 464-2995
Network Trouble: (503) 464-8754
"Educating Layer 8, one user at a time."

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