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POCannot connect using keys with Ruby and net/ssh
 

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  1. POCannot connect using keys with Ruby and net/ssh
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    <p>I'm having trouble connecting via ssh from ruby using the 'net-ssh' gem, getting Net::SSH::AuthenticationFailed. The code is below</p> <pre><code>require 'net/ssh' keys = ["path_to_private_key"] Net::SSH.start('host', 'user',:keys =&gt; keys, :verbose =&gt; :debug) do |ssh| #ssh code end </code></pre> <p>Using ssh directly from the command line works:</p> <pre><code>ssh -i &lt;path_to_private_key&gt; user@host </code></pre> <p>Do I have the the ssh API wrong? I have tried both 'user@host' and just 'user' as the username with the same result.</p> <p>Here is the debugging output:</p> <pre><code>D, [2011-07-26T19:42:00.135148 #3511] DEBUG -- net.ssh.transport.session[140b040]: establishing connection to host:22 D, [2011-07-26T19:42:00.164190 #3511] DEBUG -- net.ssh.transport.session[140b040]: connection established I, [2011-07-26T19:42:00.164344 #3511] INFO -- net.ssh.transport.server_version[140a3fc]: negotiating protocol version D, [2011-07-26T19:42:00.192092 #3511] DEBUG -- net.ssh.transport.server_version[140a3fc]: remote is `SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu3' D, [2011-07-26T19:42:00.192177 #3511] DEBUG -- net.ssh.transport.server_version[140a3fc]: local is `SSH-2.0-Ruby/Net::SSH_2.1.4 x86_64-linux' D, [2011-07-26T19:42:00.212348 #3511] DEBUG -- tcpsocket[140aaf0]: read 784 bytes D, [2011-07-26T19:42:00.212461 #3511] DEBUG -- tcpsocket[140aaf0]: received packet nr 0 type 20 len 780 I, [2011-07-26T19:42:00.212515 #3511] INFO -- net.ssh.transport.algorithms[13e9058]: got KEXINIT from server I, [2011-07-26T19:42:00.212604 #3511] INFO -- net.ssh.transport.algorithms[13e9058]: sending KEXINIT D, [2011-07-26T19:42:00.212698 #3511] DEBUG -- tcpsocket[140aaf0]: queueing packet nr 0 type 20 len 556 D, [2011-07-26T19:42:00.212741 #3511] DEBUG -- tcpsocket[140aaf0]: sent 560 bytes I, [2011-07-26T19:42:00.212771 #3511] INFO -- net.ssh.transport.algorithms[13e9058]: negotiating algorithms D, [2011-07-26T19:42:00.212859 #3511] DEBUG -- net.ssh.transport.algorithms[13e9058]: negotiated: * kex: diffie-hellman-group-exchange-sha1 * host_key: ssh-rsa * encryption_server: aes128-cbc * encryption_client: aes128-cbc * hmac_client: hmac-sha1 * hmac_server: hmac-sha1 * compression_client: none * compression_server: none * language_client: * language_server: D, [2011-07-26T19:42:00.212889 #3511] DEBUG -- net.ssh.transport.algorithms[13e9058]: exchanging keys D, [2011-07-26T19:42:00.212998 #3511] DEBUG -- tcpsocket[140aaf0]: queueing packet nr 1 type 34 len 20 D, [2011-07-26T19:42:00.213033 #3511] DEBUG -- tcpsocket[140aaf0]: sent 24 bytes D, [2011-07-26T19:42:00.292238 #3511] DEBUG -- tcpsocket[140aaf0]: read 152 bytes D, [2011-07-26T19:42:00.292389 #3511] DEBUG -- tcpsocket[140aaf0]: received packet nr 1 type 31 len 148 D, [2011-07-26T19:42:00.297526 #3511] DEBUG -- tcpsocket[140aaf0]: queueing packet nr 2 type 32 len 140 D, [2011-07-26T19:42:00.297627 #3511] DEBUG -- tcpsocket[140aaf0]: sent 144 bytes D, [2011-07-26T19:42:00.321754 #3511] DEBUG -- tcpsocket[140aaf0]: read 720 bytes D, [2011-07-26T19:42:00.321909 #3511] DEBUG -- tcpsocket[140aaf0]: received packet nr 2 type 33 len 700 D, [2011-07-26T19:42:00.326688 #3511] DEBUG -- tcpsocket[140aaf0]: queueing packet nr 3 type 21 len 20 D, [2011-07-26T19:42:00.326793 #3511] DEBUG -- tcpsocket[140aaf0]: sent 24 bytes D, [2011-07-26T19:42:00.326927 #3511] DEBUG -- tcpsocket[140aaf0]: received packet nr 3 type 21 len 12 D, [2011-07-26T19:42:00.327325 #3511] DEBUG -- net.ssh.authentication.session[1475c10]: beginning authentication of `user@host' D, [2011-07-26T19:42:00.327519 #3511] DEBUG -- tcpsocket[140aaf0]: queueing packet nr 4 type 5 len 28 D, [2011-07-26T19:42:00.327604 #3511] DEBUG -- tcpsocket[140aaf0]: sent 52 bytes D, [2011-07-26T19:42:00.461124 #3511] DEBUG -- tcpsocket[140aaf0]: read 52 bytes D, [2011-07-26T19:42:00.461199 #3511] DEBUG -- tcpsocket[140aaf0]: received packet nr 4 type 6 len 28 D, [2011-07-26T19:42:00.461260 #3511] DEBUG -- net.ssh.authentication.session[1475c10]: trying publickey D, [2011-07-26T19:42:00.461370 #3511] DEBUG -- net.ssh.authentication.agent[1470800]: connecting to ssh-agent E, [2011-07-26T19:42:00.461423 #3511] ERROR -- net.ssh.authentication.agent[1470800]: could not connect to ssh-agent D, [2011-07-26T19:42:00.461521 #3511] DEBUG -- net.ssh.authentication.methods.publickey[1470bfc]: trying publickey (d7:62:48:07:23:1d:c0:de:80:0d:27:a3:ab:92:72:be) D, [2011-07-26T19:42:00.461610 #3511] DEBUG -- tcpsocket[140aaf0]: queueing packet nr 5 type 50 len 364 D, [2011-07-26T19:42:00.461648 #3511] DEBUG -- tcpsocket[140aaf0]: sent 388 bytes D, [2011-07-26T19:42:00.486881 #3511] DEBUG -- tcpsocket[140aaf0]: read 68 bytes D, [2011-07-26T19:42:00.487057 #3511] DEBUG -- tcpsocket[140aaf0]: received packet nr 5 type 51 len 44 D, [2011-07-26T19:42:00.487186 #3511] DEBUG -- net.ssh.authentication.session[1475c10]: allowed methods: publickey,password D, [2011-07-26T19:42:00.487261 #3511] DEBUG -- net.ssh.authentication.session[1475c10]: trying password E, [2011-07-26T19:42:00.487346 #3511] ERROR -- net.ssh.authentication.session[1475c10]: all authorization methods failed (tried publickey, password) </code></pre> <p>Thanks</p>
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    1. COYour code should work, are you sure the "path_to_private_key" is correct in your Ruby code? What does the debugging output show?
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      1. USJeff Dallien
    2. CO@jeff-dallien I added the output to the question.
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