Thanks, Error reported that it was unable to initialize private key from file. I was using puttygen for generate public private key. When I used private key from export opensshkey option in puttygen everything worked.
Thanks for your help.
Saura.
PS: I am new here. How do I disable html messages here. I prefer plain text.

No such thing :) Markup in the Monastery, PerlMonks FAQ

$ssh2->auth_publickey('username', 'openssh.public', 
'openssh.private.ppk') or die "$!\n";
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Afternoon all.

I'm having the same problem as above, same circumstances in that I can use puTTY to get on to the box using key-based authentication. The relevant code is:

my $ssh = Net::SSH2->new();
print "DEBUG: 1\n";
$ssh->debug(1);
$ssh->connect($config_host);
print "DEBUG: 2 $SSH_USER\n";
$ssh->auth_publickey($SSH_USER, './virt_pub', './virt_priv.ppk') or die "pk connection error $!\n";
#$ssh->auth_password($SSH_USER, "some_password");
print "DEBUG: 3\n";
my $channel = $ssh->channel();
print "DEBUG: 4 $ssh->error()\n";


At the ->auth_publickey call I get the message 'Resource temporarily unavailable'.

Does anyone know which resource? One of the key files or perhaps sshd on the server?

TIA,

Nick

p.s. the auth_password version works

Hi, I don't use windows, but compare your auth_publickey to mine below.

$ssh->auth_publickey($SSH_USER, './virt_pub', './virt_priv.ppk') or di
+e "pk connection error $!\n";
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# you need  permission to read the keys
$ssh2->auth_publickey('zentara',
                 '/home/zentara/.ssh/id_dsa.pub',
         '/home/zentara/.ssh/id_dsa',
          $pass );
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It's possible that your dot slash notation for specifying the key's path, may need a full path from root. You may not be running from the directory you think you are in.

---

I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh

Right, it's working, thanks to both zentara and salva for gently nudging me in the right direction and apologies for the wetware error

It was me using the wrong format keys. Once I used the private key generated from puttygen's 'Conversion' menu and the public key from the 'Public key for pasting into OpenSSH authorized_keys file' file all works swimmingly.

Nick

1. Generated SSH-2DSA dsa.pub and dsa.ppk with puttygen on Windows

2. Converted dsa.ppk to openssh.ppk ( Conversion-> Export OPENSSH key) in puttygen

3. Loaded openssh.ppk and saved openssh.pub from Key window in puttygen

4. copied content openssh.pub to authorised_keys on server and on local windows computer

5. Voila

my $ssh2 = Net::SSH2->new(trace => -1);
#$ssh2->debug(1);
  $ssh2->connect('server_ip') or die $!;
  print $ssh2->error;
  $ssh2->auth_publickey('username','openssh.pub','openssh.ppk') or die
+ "$!\n";
my $chan = $ssh2->channel();
    $chan->blocking(0);
    $chan->exec('ls -al');
    my @output;
    while (<$chan>) { print $_; }
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