title: unable to reach ssh remote host using ansible using aws key
body: <p>I am trying to ping a server using ansible, but I am getting some error messages</p>
  
  <pre><code>[ec2-user@ip-172-30-0-64 kafka-scripts]$ ansible zook1 -m ping -vvv
  
  Using /home/ec2-user/kafka-scripts/ansible.cfg as config file
  &lt;172.30.0.113&gt; ESTABLISH SSH CONNECTION FOR USER: None
  &lt;172.30.0.113&gt; SSH: EXEC ssh -C -q -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/home/ec2-user/kafka-scripts/keys/kafka_broker.pem"' -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 -o ControlPath=/home/ec2-user/.ansible/cp/ansible-ssh-%h-%p-%r -tt 172.30.0.113 '/bin/sh -c '"'"'( umask 22 &amp;&amp; mkdir -p "` echo $HOME/.ansible/tmp/ansible-tmp-1461268838.85-234429685988133 `" &amp;&amp; echo "` echo $HOME/.ansible/tmp/ansible-tmp-1461268838.85-234429685988133 `" )'"'"''
  zook1 | UNREACHABLE! =&gt; {
       "changed": false,
       "msg": "SSH encountered an unknown error during the connection. We recommend you re-run the command using -vvvv, which will enable SSH debugging output to help diagnose the issue",
       "unreachable": true
  }
  </code></pre>
  
  <p>with -vvvv</p>
  
  <pre><code>[ec2-user@ip-172-30-0-64 kafka-scripts]$ ansible zookservers -m ping -vvvv
  Using /home/ec2-user/kafka-scripts/ansible.cfg as config file
  Loaded callback minimal of type stdout, v2.0
  &lt;172.30.0.113&gt; ESTABLISH SSH CONNECTION FOR USER: None
  &lt;172.30.0.113&gt; SSH: EXEC ssh -C -vvv -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/home/ec2-user/kafka-scripts/keys/kafka_broker.pem"' -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 -o ControlPath=/home/ec2-user/.ansible/cp/ansible-ssh-%h-%p-%r -tt 172.30.0.113 '/bin/sh -c '"'"'( umask 22 &amp;&amp; mkdir -p "` echo $HOME/.ansible/tmp/ansible-tmp-1461270664.7-212192719472156 `" &amp;&amp; echo "` echo $HOME/.ansible/tmp/ansible-tmp-1461270664.7-212192719472156 `" )'"'"''
   zook1 | UNREACHABLE! =&gt; {
  "changed": false,
  "msg": "SSH encountered an unknown error. The output was:\nOpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013\r\ndebug1: Reading configuration data /etc/ssh/ssh_config\r\ndebug1: /etc/ssh/ssh_config line 56: Applying options for *\r\ndebug1: auto-mux: Trying existing master\r\ndebug1: Control socket \"/home/ec2-user/.ansible/cp/ansible-ssh-172.30.0.113-22-ec2-user\" does not exist\r\ndebug2: ssh_connect: needpriv 0\r\ndebug1: Connecting to 172.30.0.113 [172.30.0.113] port 22.\r\ndebug2: fd 3 setting O_NONBLOCK\r\ndebug1: fd 3 clearing O_NONBLOCK\r\ndebug1: Connection established.\r\ndebug3: timeout: 10000 ms remain after connect\r\ndebug3: Incorrect RSA1 identifier\r\ndebug3: Could not load \"/home/ec2-user/kafka-scripts/keys/kafka_broker.pem\" as a RSA1 public key\r\ndebug1: identity file /home/ec2-user/kafka-scripts/keys/kafka_broker.pem type -1\r\ndebug1: identity file /home/ec2-user/kafka-scripts/keys/kafka_broker.pem-cert type -1\r\ndebug1: Enabling compatibility mode for protocol 2.0\r\ndebug1: Local version string SSH-2.0-OpenSSH_6.6.1\r\ndebug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1\r\ndebug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000\r\ndebug2: fd 3 setting O_NONBLOCK\r\ndebug3: load_hostkeys: loading entries for host \"172.30.0.113\" from file \"/home/ec2-user/.ssh/known_hosts\"\r\ndebug3: load_hostkeys: found key type ECDSA in file /home/ec2-user/.ssh/known_hosts:1\r\ndebug3: load_hostkeys: loaded 1 keys\r\ndebug3: 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\r\ndebug1: SSH2_MSG_KEXINIT sent\r\ndebug1: SSH2_MSG_KEXINIT received\r\ndebug2: 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\r\ndebug2: 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\r\ndebug2: 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\r\ndebug2: 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\r\ndebug2: 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\r\ndebug2: 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\r\ndebug2: kex_parse_kexinit: zlib@openssh.com,zlib,none\r\ndebug2: kex_parse_kexinit: zlib@openssh.com,zlib,none\r\ndebug2: kex_parse_kexinit: \r\ndebug2: kex_parse_kexinit: \r\ndebug2: kex_parse_kexinit: first_kex_follows 0 \r\ndebug2: kex_parse_kexinit: reserved 0 \r\ndebug2: 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\r\ndebug2: kex_parse_kexinit: ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519\r\ndebug2: 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\r\ndebug2: 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\r\ndebug2: 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\r\ndebug2: 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\r\ndebug2: kex_parse_kexinit: none,zlib@openssh.com\r\ndebug2: kex_parse_kexinit: none,zlib@openssh.com\r\ndebug2: kex_parse_kexinit: \r\ndebug2: kex_parse_kexinit: \r\ndebug2: kex_parse_kexinit: first_kex_follows 0 \r\ndebug2: kex_parse_kexinit: reserved 0 \r\ndebug2: mac_setup: setup hmac-md5-etm@openssh.com\r\ndebug1: kex: server-&gt;client aes128-ctr hmac-md5-etm@openssh.com zlib@openssh.com\r\ndebug2: mac_setup: setup hmac-md5-etm@openssh.com\r\ndebug1: kex: client-&gt;server aes128-ctr hmac-md5-etm@openssh.com zlib@openssh.com\r\ndebug1: kex: curve25519-sha256@libssh.org need=16 dh_need=16\r\ndebug1: kex: curve25519-sha256@libssh.org need=16 dh_need=16\r\ndebug1: sending SSH2_MSG_KEX_ECDH_INIT\r\ndebug1: expecting SSH2_MSG_KEX_ECDH_REPLY\r\ndebug1: Server host key: ECDSA 55:88:b1:5a:cd:bb:87:ff:dd:54:b0:36:39:c7:e2:ea\r\ndebug3: load_hostkeys: loading entries for host \"172.30.0.113\" from file \"/home/ec2-user/.ssh/known_hosts\"\r\ndebug3: load_hostkeys: found key type ECDSA in file /home/ec2-user/.ssh/known_hosts:1\r\ndebug3: load_hostkeys: loaded 1 keys\r\ndebug1: Host '172.30.0.113' is known and matches the ECDSA host key.\r\ndebug1: Found key in /home/ec2-user/.ssh/known_hosts:1\r\ndebug1: ssh_ecdsa_verify: signature correct\r\ndebug2: kex_derive_keys\r\ndebug2: set_newkeys: mode 1\r\ndebug1: SSH2_MSG_NEWKEYS sent\r\ndebug1: expecting SSH2_MSG_NEWKEYS\r\ndebug2: set_newkeys: mode 0\r\ndebug1: SSH2_MSG_NEWKEYS received\r\ndebug1: SSH2_MSG_SERVICE_REQUEST sent\r\ndebug2: service_accept: ssh-userauth\r\ndebug1: SSH2_MSG_SERVICE_ACCEPT received\r\ndebug2: key: /home/ec2-user/kafka-scripts/keys/kafka_broker.pem ((nil)), explicit\r\ndebug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic\r\ndebug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic\r\ndebug3: preferred gssapi-with-mic,gssapi-keyex,hostbased,publickey\r\ndebug3: authmethod_lookup gssapi-with-mic\r\ndebug3: remaining preferred: gssapi-keyex,hostbased,publickey\r\ndebug3: authmethod_is_enabled gssapi-with-mic\r\ndebug1: Next authentication method: gssapi-with-mic\r\ndebug1: Unspecified GSS failure.  Minor code may provide more information\nNo Kerberos credentials available\n\r\ndebug1: Unspecified GSS failure.  Minor code may provide more information\nNo Kerberos credentials available\n\r\ndebug1: Unspecified GSS failure.  Minor code may provide more information\n\n\r\ndebug1: Unspecified GSS failure.  Minor code may provide more information\nNo Kerberos credentials available\n\r\ndebug2: we did not send a packet, disable method\r\ndebug3: authmethod_lookup gssapi-keyex\r\ndebug3: remaining preferred: hostbased,publickey\r\ndebug3: authmethod_is_enabled gssapi-keyex\r\ndebug1: Next authentication method: gssapi-keyex\r\ndebug1: No valid Key exchange context\r\ndebug2: we did not send a packet, disable method\r\ndebug3: authmethod_lookup publickey\r\ndebug3: remaining preferred: ,publickey\r\ndebug3: authmethod_is_enabled publickey\r\ndebug1: Next authentication method: publickey\r\ndebug1: Trying private key: /home/ec2-user/kafka-scripts/keys/kafka_broker.pem\r\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r\n@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @\r\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r\nPermissions 0777 for '/home/ec2-user/kafka-scripts/keys/kafka_broker.pem' are too open.\r\nIt is required that your private key files are NOT accessible by others.\r\nThis private key will be ignored.\r\nbad permissions: ignore key: /home/ec2-user/kafka-scripts/keys/kafka_broker.pem\r\ndebug2: we did not send a packet, disable method\r\ndebug1: No more authentication methods to try.\r\nPermission denied (publickey,gssapi-keyex,gssapi-with-mic).\r\n",
  "unreachable": true
   }
  </code></pre>
  
  <p>SSH debugging output:</p>
  
  <pre><code>SSH encountered an unknown error. The output was:\nOpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: /etc/ssh/ssh_config line 56: Applying options for *
  debug1: auto-mux: Trying existing master
  debug1: Control socket "/home/ec2-user/.ansible/cp/ansible-ssh-172.30.0.113-22-ec2-user" does not exist
  debug2: ssh_connect: needpriv 0
  debug1: Connecting to 172.30.0.113 [172.30.0.113] port 22.
  debug2: fd 3 setting O_NONBLOCK
  debug1: fd 3 clearing O_NONBLOCK
  debug1: Connection established.
  debug3: timeout: 10000 ms remain after connect
  debug3: Incorrect RSA1 identifier
  debug3: Could not load "/home/ec2-user/kafka-scripts/keys/kafka_broker.pem" as a RSA1 public key
  debug1: identity file /home/ec2-user/kafka-scripts/keys/kafka_broker.pem type -1
  debug1: identity file /home/ec2-user/kafka-scripts/keys/kafka_broker.pem-cert type -1
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_6.6.1
  debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1
  debug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000
  debug2: fd 3 setting O_NONBLOCK
  debug3: load_hostkeys: loading entries for host "172.30.0.113" from file "/home/ec2-user/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /home/ec2-user/.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: zlib@openssh.com,zlib,none
  debug2: kex_parse_kexinit: zlib@openssh.com,zlib,none
  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,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 zlib@openssh.com
  debug2: mac_setup: setup hmac-md5-etm@openssh.com
  debug1: kex: client-&gt;server aes128-ctr hmac-md5-etm@openssh.com zlib@openssh.com
  debug1: kex: curve25519-sha256@libssh.org need=16 dh_need=16
  debug1: kex: curve25519-sha256@libssh.org need=16 dh_need=16
  debug1: sending SSH2_MSG_KEX_ECDH_INIT
  debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
  debug1: Server host key: ECDSA 55:88:b1:5a:cd:bb:87:ff:dd:54:b0:36:39:c7:e2:ea
  debug3: load_hostkeys: loading entries for host "172.30.0.113" from file "/home/ec2-user/.ssh/known_hosts"
  debug3: load_hostkeys: found key type ECDSA in file /home/ec2-user/.ssh/known_hosts:1
  debug3: load_hostkeys: loaded 1 keys
  debug1: Host '172.30.0.113' is known and matches the ECDSA host key.
  debug1: Found key in /home/ec2-user/.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: /home/ec2-user/kafka-scripts/keys/kafka_broker.pem ((nil)), explicit
  debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic
  debug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic
  debug3: preferred gssapi-with-mic,gssapi-keyex,hostbased,publickey
  debug3: authmethod_lookup gssapi-with-mic
  debug3: remaining preferred: gssapi-keyex,hostbased,publickey
  debug3: authmethod_is_enabled gssapi-with-mic
  debug1: Next authentication method: gssapi-with-mic
  debug1: Unspecified GSS failure.  Minor code may provide more information\nNo Kerberos credentials available\n
  debug1: Unspecified GSS failure.  Minor code may provide more information\nNo Kerberos credentials available\n
  debug1: Unspecified GSS failure.  Minor code may provide more information\n\n
  debug1: Unspecified GSS failure.  Minor code may provide more information\nNo Kerberos credentials available\n
  debug2: we did not send a packet, disable method
  debug3: authmethod_lookup gssapi-keyex
  debug3: remaining preferred: hostbased,publickey
  debug3: authmethod_is_enabled gssapi-keyex
  debug1: Next authentication method: gssapi-keyex
  debug1: No valid Key exchange context
  debug2: we did not send a packet, disable method
  debug3: authmethod_lookup publickey
  debug3: remaining preferred: ,publickey
  debug3: authmethod_is_enabled publickey
  debug1: Next authentication method: publickey
  debug1: Trying private key: /home/ec2-user/kafka-scripts/keys/kafka_broker.pem
  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  @         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  Permissions 0777 for '/home/ec2-user/kafka-scripts/keys/kafka_broker.pem' are too open.
  It is required that your private key files are NOT accessible by others.
  This private key will be ignored.
  bad permissions: ignore key: /home/ec2-user/kafka-scripts/keys/kafka_broker.pem
  debug2: we did not send a packet, disable method
  debug1: No more authentication methods to try.
  Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
  </code></pre>