Ruby腳本Net :: SSH :: HostKeyMismatch但ssh有效

Question

我可以ssh到我的aws網絡上的遠程主機，但使用net / ssh在ruby腳本中失敗。 我的gem是Ubuntu 16.04上的net-ssh（4.2.0）。 即使使用non_interactive => false，它也不會提示輸入密碼。

錯誤：

用戶Net :: SSH :: AuthenticationFailed的身份驗證失敗

為什么這段代碼失敗了？

#!/usr/bin/env ruby
require 'rubygems'
require 'net/ssh'

HOST = 'myhost'

Net::SSH.start(HOST,
:auth_methods => ['publickey'],
:passphrase => 'mypassphrase',
:non_interactive => true,
:host_key => "ssh-rsa",
:keys => [ '/home/markhorrocks/.ssh/id_rsa' ]
 ) do |session|
  output = session.exec!('ls')
  puts output
 end

編輯我的代碼后，我得到錯誤

（凈:: SSH :: HostKeyMismatch）

HOST = 'myhost'
USER = 'markhorrocks'

Net::SSH.start(HOST, USER,
:auth_methods => ['publickey'],
:passphrase => 'mypassphrase',
:non_interactive => true,
:host_key => "ssh-rsa",
  :encryption => "blowfish-cbc",
:keys => [ '/home/markhorrocks/.ssh/id_rsa' ],
:port => '1234',
:forward_agent => true,
  :compression => "zlib@openssh.com"
 ) do |session|
  output = session.exec!('ls')
  puts output
 end

Answer 1

keys數組需要指向您的私鑰。 authorized_keys是允許登錄當前主機的密鑰的公共指紋。 此外，您似乎已為host_key設置了私鑰類型。

Answer 2

這是我的解決方案：

#!/usr/bin/env ruby

require 'net/ssh'

HOST = 'myhost'
USER = 'markhorrocks'

Net::SSH.start(HOST, USER,
:auth_methods => ['publickey'],
:passphrase => 'mypassphrase',
:non_interactive => true,
:host_key => "ssh-rsa",
:encryption => "blowfish-cbc",
:keys => [ '/home/markhorrocks/.ssh/id_rsa' ],
:port => '1234',
:forward_agent => true,
:verify_host_key => false,
:compression => "zlib@openssh.com"
 ) do |session|
       begin
          rescue Net::SSH::HostKeyMismatch => e
          puts "remembering new key: #{e.fingerprint}"
          e.remember_host!
          retry
       end

  output = session.exec!('ls')
  puts output
 end