ansible jenkins deployment on aws

PLAY [Deploy tomcat service] ***************************************************

TASK [setup] *******************************************************************
<172.31.28.64> ESTABLISH SSH CONNECTION FOR USER: ec2-user
<172.31.28.64> SSH: EXEC ssh -C -vvv -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=ec2-user -o ConnectTimeout=10 -o ControlPath=/var/lib/jenkins/.ansible/cp/ansible-ssh-%h-%p-%r -tt 172.31.28.64 '( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1531306793.87-190878923021372 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1531306793.87-190878923021372 )" )'
fatal: [172.31.28.64]: UNREACHABLE! => {"changed": false, "msg": "ERROR! SSH encountered an unknown error. The output was:\nOpenSSH_7.2p2 Ubuntu-4ubuntu2.4, OpenSSL 1.0.2g  1 Mar 2016\r\ndebug1: Reading configuration data /etc/ssh/ssh_config\r\ndebug1: /etc/ssh/ssh_config line 19: Applying options for *\r\ndebug1: auto-mux: Trying existing master\r\ndebug1: Control socket \"/var/lib/jenkins/.ansible/cp/ansible-ssh-172.31.28.64-22-ec2-user\" does not exist\r\ndebug2: resolving \"172.31.28.64\" port 22\r\ndebug2: ssh_connect_direct: needpriv 0\r\ndebug1: Connecting to 172.31.28.64 [172.31.28.64] 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\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /var/lib/jenkins/.ssh/id_rsa type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /var/lib/jenkins/.ssh/id_rsa-cert type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /var/lib/jenkins/.ssh/id_dsa type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /var/lib/jenkins/.ssh/id_dsa-cert type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /var/lib/jenkins/.ssh/id_ecdsa type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /var/lib/jenkins/.ssh/id_ecdsa-cert type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /var/lib/jenkins/.ssh/id_ed25519 type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /var/lib/jenkins/.ssh/id_ed25519-cert type -1\r\ndebug1: Enabling compatibility mode for protocol 2.0\r\ndebug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.4\r\ndebug1: Remote protocol version 2.0, remote software version OpenSSH_7.4\r\ndebug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000\r\ndebug2: fd 3 setting O_NONBLOCK\r\ndebug1: Authenticating to 172.31.28.64:22 as 'ec2-user'\r\ndebug3: send packet: type 20\r\ndebug1: SSH2_MSG_KEXINIT sent\r\ndebug3: receive packet: type 20\r\ndebug1: SSH2_MSG_KEXINIT received\r\ndebug2: local client KEXINIT proposal\r\ndebug2: KEX algorithms: 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,ext-info-c\r\ndebug2: host key algorithms: 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,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa\r\ndebug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc\r\ndebug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc\r\ndebug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1\r\ndebug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1\r\ndebug2: compression ctos: zlib@openssh.com,zlib,none\r\ndebug2: compression stoc: zlib@openssh.com,zlib,none\r\ndebug2: languages ctos: \r\ndebug2: languages stoc: \r\ndebug2: first_kex_follows 0 \r\ndebug2: reserved 0 \r\ndebug2: peer server KEXINIT proposal\r\ndebug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1\r\ndebug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519\r\ndebug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc\r\ndebug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc\r\ndebug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1\r\ndebug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1\r\ndebug2: compression ctos: none,zlib@openssh.com\r\ndebug2: compression stoc: none,zlib@openssh.com\r\ndebug2: languages ctos: \r\ndebug2: languages stoc: \r\ndebug2: first_kex_follows 0 \r\ndebug2: reserved 0 \r\ndebug1: kex: algorithm: curve25519-sha256@libssh.org\r\ndebug1: kex: host key algorithm: ecdsa-sha2-nistp256\r\ndebug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: zlib@openssh.com\r\ndebug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: zlib@openssh.com\r\ndebug3: send packet: type 30\r\ndebug1: expecting SSH2_MSG_KEX_ECDH_REPLY\r\ndebug3: receive packet: type 31\r\ndebug1: Server host key: ecdsa-sha2-nistp256 SHA256:hY0iIgi/N6Pm4XRlDIoZWSfE2bs9u+2uwnjMzkO7yxI\r\ndebug1: read_passphrase: can't open /dev/tty: No such device or address\r\nHost key verification failed.\r\n", "unreachable": true}

PLAY RECAP *********************************************************************
172.31.28.64               : ok=0    changed=0    unreachable=1    failed=0   
localhost                  : ok=6    changed=2    unreachable=0    failed=0   

Build step 'Execute shell' marked build as failure
Finished: FAILURE