07-07-2015
You are saying that you can connect to server B from server A, and if you try it again you get password prompt ?
I would suspect someone is changing permissions on $HOME and .ssh folders.
They need to be per documentation, check out the section on the following link:
OpenSSH FAQ
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after copying the public key then also the passwordless authentication is not working
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LEARN ABOUT DEBIAN
net::openssh::compat::ssh2
Net::OpenSSH::Compat::SSH2(3pm) User Contributed Perl Documentation Net::OpenSSH::Compat::SSH2(3pm)
NAME
Net::OpenSSH::Compat::SSH2 - Net::OpenSSH adapter for Net::SSH2 API compatibility
SYNOPSIS
use Net::OpenSSH::Compat::SSH2 qw(:supplant);
use Net::SSH2;
my $ssh2 = Net::SSH2->new;
$ssh2->connect('host');
$ssh2->auth_publickey("jsmith",
"/home/jsmith/.ssh/id_dsa.pub",
"/home/jsmith/.ssh/id_dsa");
my $c = $ssh2->channel;
$c->exec("ls");
print while <$c>;
$c->close;
print "exit status: ", $c->exit_status, "
";
DESCRIPTION
This module implements Net::SSH2 API on top of Net::OpenSSH.
After the module is loaded as...
use Net::OpenSSH::Compat::SSH2 qw(:supplant);
it will supplant the Net::SSH2 module as if it was installed on the machine and use Net::OpenSSH under the hood to handle SSH operations.
Most programs using Net::SSH2 should continue to work without any change.
Setting defaults
The hash %Net::OpenSSH::Compat::SSH2::DEFAULTS can be used to set default values for Net::OpenSSH and other modules called under the hood
and otherwise not accesible through the Net::SSH2 API.
The entries currently supported are:
connection => [ %opts ]
Extra options passed to "Net::OpenSSH::new" constructor.
Example:
$Net::OpenSSH::Compat::SSH2::DEFAULTS{connection} =
[ ssh_path => "/opt/SSH/bin/ssh" ];
channel => [ %opts ]
Extra options passed to "Net::OpenSSH::open_ex" method.
sftp => [ %opts ]
Extra options passed to "Net::SFTP::Foreign::new" constructor.
$Net::OpenSSH::Compat::SSH2::DEFAULTS{connection} =
[ read_ahead => 128 * 1024, queue_size => 20 ];
BUGS AND SUPPORT
This is a work in progress.
Besides that, there are some functionality of Net::SSH2 that can not be emulated with Net::OpenSSH. Fortunatelly, the missing bits are
rarely used so probably you may not need them at all.
Specifically, the return values from the "$ssh2->method($ATTR)" are not real but faked ones. "auth_list" return value is also faked.
Anyway, if your Net::SSH2 script fails, fill a bug report at the CPAN RT bugtracker
(https://rt.cpan.org/Ticket/Create.html?Queue=Net-OpenSSH-Compat <https://rt.cpan.org/Ticket/Create.html?Queue=Net-OpenSSH-Compat>) or just
send me an e-mail with the details.
Include at least:
1 - The full source of the script
2 - A description of what happens in your machine
3 - What you thing it should be happening
4 - What happens when you use the real Net::SSH2
5 - The version and name of your operating system
6 - The version of the OpenSSH ssh client installed on your machine ("ssh -V")
7 - The Perl version ("perl -V")
8 - The versions of the Perl packages Net::OpenSSH, IO::Pty and this Net::OpenSSH::Compat.
Git repository
The source code repository is at https://github.com/salva/p5-Net-OpenSSH-Compat <https://github.com/salva/p5-Net-OpenSSH-Compat>.
My wishlist
If you like this module and you're feeling generous, take a look at my Amazon Wish List: <http://amzn.com/w/1WU1P6IR5QZ42>
Also consider contributing to the OpenSSH project this module builds upon: <http://www.openssh.org/donations.html>.
COPYRIGHT AND LICENSE
Copyright (C) 2011 by Salvador Fandin~o (sfandino@yahoo.com)
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.10.0 or,
at your option, any later version of Perl 5 you may have available.
perl v5.14.2 2011-09-28 Net::OpenSSH::Compat::SSH2(3pm)