title: Jenkins : Host key verification failed while executing ssh
body: <p>I am trying to create a build with basic configuration on the slave node. Only command the needs to be executed from <strong>Execute shell</strong>  option is doing ssh to the slave. While executing the build the following error is observed: </p>
  
  <pre><code>Building remotely on slave 1 in workspace /home/jenkins/workspace/slave job 1
  [slave job 1] $ /bin/sh -xe /tmp/hudson4772532626468045261.sh
  + ssh jenkins@172.27.170.108
  Pseudo-terminal will not be allocated because stdin is not a terminal.
  Host key verification failed.
  Build step 'Execute shell' marked build as failure
  </code></pre>
  
  <p>In order to solve the issue of <strong>Pseduo-Termial</strong>, added the option of <strong>-T</strong> while doing ssh, and still the same issue <strong>Host Key Verification failed</strong> :</p>
  
  <pre><code>Building remotely on slave 1 in workspace /home/jenkins/workspace/slave job 1
  [slave job 1] $ /bin/sh -xe /tmp/hudson2830119741217409056.sh
  + ssh -T jenkins@172.27.170.108
  Host key verification failed.
  </code></pre>
  
  <p>After googling out got to know that ssh keys needs to be added in localhost. <strong>Even verified that manually and no options for password were prompted while doing ssh. Below is the output:</strong></p>
  
  <pre><code>jenkins@labadmin-VirtualBox:/root/RAGHU$ ssh jenkins@172.27.170.108
  Welcome to Ubuntu 14.04.5 LTS (GNU/Linux 4.2.0-27-generic x86_64)
  
  * Documentation:  https://help.ubuntu.com/
  
  88 packages can be updated.
  60 updates are security updates.
  ........
  ........
  and reboot your system.
  Last login: Fri Apr 14 14:46:50 2017 from 172.24.43.35
  jenkins@RTPS-DCE-DV:~$ 
  </code></pre>
  
  <p>Please help in resolving these issues..</p>
  
  <p><strong>EDIT : Adding the ssh debug info:</strong></p>
  
  <pre><code>jenkins@labadmin-VirtualBox:/root/RAGHU$ ssh -vvv jenkins@172.27.170.108
  OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: /etc/ssh/ssh_config line 19: Applying options for *
  debug2: ssh_connect: needpriv 0
  debug1: Connecting to 172.27.170.108 [172.27.170.108] port 22.
  debug1: Connection established.
  debug3: Incorrect RSA1 identifier
  debug3: Could not load "/var/lib/jenkins/.ssh/id_rsa" as a RSA1 public key
  debug1: identity file /var/lib/jenkins/.ssh/id_rsa type 1
  debug1: identity file /var/lib/jenkins/.ssh/id_rsa-cert type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_dsa type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_dsa-cert type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_ecdsa type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_ecdsa-cert type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_ed25519 type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_ed25519-cert type -1
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8
  debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8
  debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8 pat OpenSSH_6.6.1* compat 0x04000000
  debug2: fd 3 setting O_NONBLOCK
  debug3: load_hostkeys: loading entries for host "172.27.170.108" from file "/var/lib/jenkins/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /var/lib/jenkins/.ssh/known_hosts:1
  debug3: load_hostkeys: loaded 1 keys
  debug3: order_hostkeyalgs: prefer hostkeyalgs: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug2: kex_parse_kexinit: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-dss-cert-v00@openssh.com,ssh-ed25519,ssh-rsa,ssh-dss
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
  debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: kex_parse_kexinit: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@openssh.com
  debug2: kex_parse_kexinit: none,zlib@openssh.com
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: mac_setup: setup hmac-md5-etm@openssh.com
  debug1: kex: server-&gt;client aes128-ctr hmac-md5-etm@openssh.com none
  debug2: mac_setup: setup hmac-md5-etm@openssh.com
  debug1: kex: client-&gt;server aes128-ctr hmac-md5-etm@openssh.com none
  debug1: sending SSH2_MSG_KEX_ECDH_INIT
  debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
  debug1: Server host key: ECDSA 63:f8:4a:65:e2:44:f2:ba:aa:25:cd:01:81:ac:f3:07
  debug3: load_hostkeys: loading entries for host "172.27.170.108" from file "/var/lib/jenkins/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /var/lib/jenkins/.ssh/known_hosts:1
  debug3: load_hostkeys: loaded 1 keys
  debug1: Host '172.27.170.108' is known and matches the ECDSA host key.
  debug1: Found key in /var/lib/jenkins/.ssh/known_hosts:1
  debug1: ssh_ecdsa_verify: signature correct
  debug2: kex_derive_keys
  debug2: set_newkeys: mode 1
  debug1: SSH2_MSG_NEWKEYS sent
  debug1: expecting SSH2_MSG_NEWKEYS
  debug2: set_newkeys: mode 0
  debug1: SSH2_MSG_NEWKEYS received
  debug1: SSH2_MSG_SERVICE_REQUEST sent
  debug2: service_accept: ssh-userauth
  debug1: SSH2_MSG_SERVICE_ACCEPT received
  debug2: key: /var/lib/jenkins/.ssh/id_rsa (0x7f020b7d2f80),
  debug2: key: /var/lib/jenkins/.ssh/id_dsa ((nil)),
  debug2: key: /var/lib/jenkins/.ssh/id_ecdsa ((nil)),
  debug2: key: /var/lib/jenkins/.ssh/id_ed25519 ((nil)),
  debug1: Authentications that can continue: publickey,password
  debug3: start over, passed a different list publickey,password
  debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
  debug3: authmethod_lookup publickey
  debug3: remaining preferred: keyboard-interactive,password
  debug3: authmethod_is_enabled publickey
  debug1: Next authentication method: publickey
  debug1: Offering RSA public key: /var/lib/jenkins/.ssh/id_rsa
  debug3: send_pubkey_test
  debug2: we sent a publickey packet, wait for reply
  debug1: Server accepts key: pkalg ssh-rsa blen 279
  debug2: input_userauth_pk_ok: fp b3:76:7b:34:c7:dd:f8:21:07:f6:ec:19:ea:94:da:5a
  debug3: sign_and_send_pubkey: RSA b3:76:7b:34:c7:dd:f8:21:07:f6:ec:19:ea:94:da:5a
  debug1: key_parse_private2: missing begin marker
  debug1: read PEM private key done: type RSA
  debug1: Authentication succeeded (publickey).
  Authenticated to 172.27.170.108 ([172.27.170.108]:22).
  debug1: channel 0: new [client-session]
  debug3: ssh_session2_open: channel_new: 0
  debug2: channel 0: send open
  debug1: Requesting no-more-sessions@openssh.com
  debug1: Entering interactive session.
  debug2: callback start
  debug2: fd 3 setting TCP_NODELAY
  debug3: packet_set_tos: set IP_TOS 0x10
  debug2: client_session2_setup: id 0
  debug2: channel 0: request pty-req confirm 1
  debug1: Sending environment.
  debug3: Ignored env XDG_VTNR
  debug3: Ignored env XDG_SESSION_ID
  debug3: Ignored env TERM
  debug3: Ignored env SHELL
  debug3: Ignored env VAULT_ADDR
  debug3: Ignored env USER
  debug3: Ignored env LS_COLORS
  debug3: Ignored env SUDO_USER
  debug3: Ignored env SUDO_UID
  debug3: Ignored env USERNAME
  debug3: Ignored env PATH
  debug3: Ignored env MAIL
  debug3: Ignored env PWD
  debug1: Sending env LANG = en_IN
  debug2: channel 0: request env confirm 0
  debug3: Ignored env HOME
  debug3: Ignored env SUDO_COMMAND
  debug3: Ignored env XDG_SEAT
  debug3: Ignored env SHLVL
  debug3: Ignored env LANGUAGE
  debug3: Ignored env LOGNAME
  debug3: Ignored env LESSOPEN
  debug3: Ignored env DISPLAY
  debug3: Ignored env SUDO_GID
  debug3: Ignored env LESSCLOSE
  debug3: Ignored env COLORTERM
  debug3: Ignored env XAUTHORITY
  debug3: Ignored env _
  debug2: channel 0: request shell confirm 1
  debug2: callback done
  debug2: channel 0: open confirm rwindow 0 rmax 32768
  debug2: channel_input_status_confirm: type 99 id 0
  debug2: PTY allocation request accepted on channel 0
  debug2: channel 0: rcvd adjust 2097152
  debug2: channel_input_status_confirm: type 99 id 0
  debug2: shell request accepted on channel 0
  Welcome to Ubuntu 14.04.5 LTS (GNU/Linux 4.2.0-27-generic x86_64)
  
   * Documentation:  https://help.ubuntu.com/
  
  88 packages can be updated.
  60 updates are security updates.
  
  ......
  ......
  
  and reboot your system.
  Last login: Fri Apr 14 17:19:05 2017 from 172.24.43.35
  jenkins@RTPS-DCE-DV:~$
  </code></pre>
  
  <p><strong>EDIT 2 : Adding the failed debug info :</strong></p>
  
  <pre><code>Building remotely on slave 1 in workspace /home/jenkins/workspace/slave job 1
  [slave job 1] $ /bin/sh -xe /tmp/hudson8556503525790261529.sh
  + ssh -vvv jenkins@172.27.170.108
  OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: /etc/ssh/ssh_config line 19: Applying options for *
  Pseudo-terminal will not be allocated because stdin is not a terminal.
  debug2: ssh_connect: needpriv 0
  debug1: Connecting to 172.27.170.108 [172.27.170.108] port 22.
  debug1: Connection established.
  debug1: identity file /var/lib/jenkins/.ssh/id_rsa type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_rsa-cert type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_dsa type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_dsa-cert type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_ecdsa type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_ecdsa-cert type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_ed25519 type -1
  debug1: identity file /var/lib/jenkins/.ssh/id_ed25519-cert type -1
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8
  debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8
  debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8 pat OpenSSH_6.6.1* compat 0x04000000
  debug2: fd 3 setting O_NONBLOCK
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug2: kex_parse_kexinit: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-dss-cert-v00@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,ssh-rsa,ssh-dss
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
  debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: kex_parse_kexinit: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@openssh.com
  debug2: kex_parse_kexinit: none,zlib@openssh.com
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: mac_setup: setup hmac-md5-etm@openssh.com
  debug1: kex: server-&gt;client aes128-ctr hmac-md5-etm@openssh.com none
  debug2: mac_setup: setup hmac-md5-etm@openssh.com
  debug1: kex: client-&gt;server aes128-ctr hmac-md5-etm@openssh.com none
  debug1: sending SSH2_MSG_KEX_ECDH_INIT
  debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
  debug1: Server host key: ECDSA 63:f8:4a:65:e2:44:f2:ba:aa:25:cd:01:81:ac:f3:07
  debug1: read_passphrase: can't open /dev/tty: No such device or address
  Host key verification failed.
  </code></pre>