From: Walton Hoops <walton@...>
Date: 2010-05-18T23:34:20+09:00
Subject: Re: (Net::SSH::HostKeyMismatch

On 5/18/2010 5:22 AM, Kamal Ahmed wrote:
> Hi,
>
> When trying to ssh login, to a host which has been reinstalled, using:
>
> Net::SSH.start( value_hosts, USER, :password => PASS ,  :paranoid =>
> false, :forward_agent => true ) do|ssh, err |
>
>
>
>
> I am getting an error:
>
> /sw/lib/ruby/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/host-key-
> verifier.rb:47:in `process_cache_miss': fingerprint da:
> 34:2e:a6:87:c4:c8:49:0e:a1:8e:39:fd:fc:ef:e7 does not match for <IP
> address> (Net::SSH::HostKeyMismatch)
>
>
> Is there a way to Ignore HostKeyMismatch ?
>
> Net::SSH.start( value_hosts, USER, :password => PASS ,  :paranoid =>
> false, :forward_agent => true ) do|ssh, err |
>
>
> is not working, i.e the :paranoid => false does not seem to work.
>
> Any hint will be appreciated.
>
> What i am trying to accomplish is to login via ssh, even of the ssh
> exchange key is no longer valid since the OS was reinstalled.
>
>
> i found the following, post but even that does not work:
>
> in order to resolve the HostKeyMismatch, use following in irb:
>
> require 'rubygems'
> require 'net/ssh'
> include Net
>
> Net::SSH.start( '10.5.30.52', 'root', :password => 'password' ,
> :paranoid => false ) do|ssh|
>
>  #puts "hello"
>   end
> rescue Net::SSH::HostKeyMismatch => e
>   puts "remembering new key: #{e.fingerprint}"
>   e.remember_host!
>   retry
> end
>
>
> i get an error:
>
>
> irb(main):001:0> Net::SSH.start( '10.5.30.52', 'root', :password =>
> 'password' ,  :paranoid => false ) do|ssh|
> irb(main):002:1*  #puts "hello"
> irb(main):003:1*   end
> NameError: uninitialized constant Net
>   

This is the important error.  You forgot to require 'net/ssh'. (and
possibly rubygems if your system requires it)

>
> Thanks,
> -Kamal.
>