Net :: SFTP ::外部错误-无法将pty连接为控制终端

Question

这是基于另一个被问到但尚未完全回答的问题。

我遇到了与user2621980相同的行为。 我的错误

could not connect pty as controlling terminal!

当我用truss运行脚本时，它消失了。

另外，请务必注意，当我在Server_A上运行脚本时，它可以正常工作。 但是，当Server_B上的另一个脚本调用（通过ssh调用）Server_A上的脚本时，即发生错误。

我想知道salva是否能够复制此内容和/或是否已找到永久解决方案。

有关我的环境的一些细节：

• Server_A uname：“ SunOS SERVER_A 5.10 Generic_150400-11 sun4v sparc sun4v”
• Server_A perl版本：v5.18.1
• Server_B uname：“ SunOS SERVER_B 5.10 Generic_150400-11 sun4v sparc sun4v”
• Server_B perl版本：v5.8.7
• Server_A：IO :: Tty / IO :: Pty-版本1.11
• Server_A：Net :: SFTP :: Foreign-版本1.77

这是我的代码的使用片段：

#!/usr/local/bin/perl

use Net::SFTP::Foreign;
use IO::Pty;
use POSIX;

## Enable debugging
$Net::SFTP::Foreign::debug = -1;

## Instantiate the variables
my ($action,$host,$user,$pass,$file,$ldir,$rdir) = @ARGV;

## Create the SFTP connection
my $sftp = Net::SFTP::Foreign->new(host     => $host,
                                   user     => $user,
                                   password => $pass);
$sftp->die_on_error("Unable to establish SFTP connection");

这是调试的输出：

#15593 1400766701.00000 new: This is Net::SFTP::Foreign 1.77
#15593 1400766701.00000 new: Loaded from /export/home/hccprod/lib/Net/SFTP/Foreign.pm
#15593 1400766701.00000 new: Running on Perl v5.18.1 for solaris
#15593 1400766701.00000 new: debug set to -1
#15593 1400766701.00000 new: ~0 is 4294967295
#15593 1400766701.00000 new: Using backend Net::SFTP::Foreign::Backend::Unix 1.76_03
#15593 1400766701.00000 _init_transport: ssh cmd: ssh -o NumberOfPasswordPrompts=1 -o PreferredAuthentications=keyboard-interactive,password -l myusername my.ftp.server -s sftp

Error: could not connect pty as controlling terminal!
#15593 1400766701.00000 _init_transport: starting password authentication
#15593 1400766701.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766702.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766703.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766704.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766705.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766706.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766707.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766708.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766709.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766710.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766711.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766712.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766713.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766714.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766715.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766716.00000 _init_transport: waiting for data from the pty to become available
#15593 1400766717.00000 _init_transport: waiting for data from the pty to become available
Permission denied (publickey,password,keyboard-interactive).
#15593 1400766718.00000 _conn_lost: _conn_lost
#15593 1400766718.00000 _set_status: _set_status code: 6, str: No connection
#15593 1400766718.00000 _set_error: _set_err code: 37, str: SSH slave exited unexpectedly with error code 255
Unable to establish SFTP connection: SSH slave exited unexpectedly with error code 255 at /export/home/username/bin/sftp_service_debug.pl line 31.
#15593 1400766718.00000 DESTROY: Net::SFTP::Foreign=HASH(0x17cc20)->DESTROY called (current pid: 15593, disconnect_by_pid: )
#15593 1400766718.00000 disconnect: Net::SFTP::Foreign=HASH(0x17cc20)->disconnect called (ssh pid: )
#15593 1400766718.00000 _conn_lost: _conn_lost

这是打开了警告的调试输出：

Unquoted string "vars" may clash with future reserved word at ./test_sftp.pl line 2.
"my" variable $cmd masks earlier declaration in same scope at ./test_sftp.pl line 24.
"my" variable $result masks earlier declaration in same scope at ./test_sftp.pl line 26.
* Calling remote script:
  ssh centralftp "sftp_service_debug.pl 'put' 'host' 'username' 'password' 'file' 'srcdir' 'destdir'"
#7284 1402514985.00000 new: This is Net::SFTP::Foreign 1.77
#7284 1402514985.00000 new: Loaded from /export/home/hccprod/lib/Net/SFTP/Foreign.pm
#7284 1402514985.00000 new: Running on Perl v5.18.1 for solaris
#7284 1402514985.00000 new: debug set to -1
#7284 1402514985.00000 new: ~0 is 4294967295
#7284 1402514985.00000 new: Using backend Net::SFTP::Foreign::Backend::Unix 1.76_03
#7284 1402514985.00000 _init_transport: ssh cmd: ssh -o NumberOfPasswordPrompts=1 -o PreferredAuthentications=keyboard-interactive,password -l onyximport centralftp.pegs.com -s sftp

warning: TIOCSCTTY failed, slave might not be set as controlling terminal: Inappropriate ioctl for device at /export/home/hccprod/lib/IO/Pty.pm line 121.
Error: could not connect pty as controlling terminal!
#7284 1402514985.00000 _init_transport: starting password authentication
#7284 1402514985.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514986.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514987.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514988.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514989.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514990.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514991.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514992.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514993.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514994.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514995.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514996.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514997.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514998.00000 _init_transport: waiting for data from the pty to become available
#7284 1402514999.00000 _init_transport: waiting for data from the pty to become available
#7284 1402515000.00000 _init_transport: waiting for data from the pty to become available
#7284 1402515001.00000 _init_transport: waiting for data from the pty to become available
Permission denied (publickey,password,keyboard-interactive).
#7284 1402515002.00000 _conn_lost: _conn_lost
#7284 1402515002.00000 _set_status: _set_status code: 6, str: No connection
#7284 1402515002.00000 _set_error: _set_err code: 37, str: SSH slave exited unexpectedly with error code 255
Unable to establish SFTP connection: SSH slave exited unexpectedly with error code 255 at /export/home/hccprod/bin/sftp_service_debug.pl line 40.
#7284 1402515002.00000 DESTROY: Net::SFTP::Foreign=HASH(0x17cc20)->DESTROY called (current pid: 7284, disconnect_by_pid: )
#7284 1402515002.00000 disconnect: Net::SFTP::Foreign=HASH(0x17cc20)->disconnect called (ssh pid: )
#7284 1402515002.00000 _conn_lost: _conn_lost

Answer 1

使用一些OS跟踪实用程序作为truss在Server_A上运行脚本，并为工作和失败（通过Server_B运行）的情况发布输出。

如果您不想公开发布捕获的信息，可以通过电子邮件发送给我。

作为一种解决方法，您可以尝试从Net :: OpenSSH调用Net :: SFTP :: Foreign，尽管您必须安装真正的OpenSSH客户端。

my $ssh = Net::OpenSSH->new($host);
my $sftp = $ssh->sftp;

两个模块的密码处理代码相似但不相同。