vagrant@precise64:~$ cat /etc/ansible/hosts
# web
web1    ansible_host=tomcat-serv-adm1 ansible_connection=ssh ansible_user=username ansible_ssh_pass=password

vagrant@precise64:~$ ansible web1 -m ping
web1 | UNREACHABLE! => {
    "changed": false,
    "msg": "Authentication or permission failure. In some cases, you may have been able to authenticate and did not have permissions on the remote directory. Consider changing the remote temp path in ansible.cfg to a path rooted in "/tmp". Failed command was: ( umask 77 && mkdir -p "` echo ~/.ansible/tmp/ansible-tmp-1503856866.42-230229170728730 `" && echo ansible-tmp-1503856866.42-230229170728730="` echo ~/.ansible/tmp/ansible-tmp-1503856866.42-230229170728730 `" ), exited with result 2",
    "unreachable": true
}

vagrant@precise64:~$ ping tomcat-serv-adm1
PING tomcat-serv-adm1-e1000g1.xypoint.com (192.168.66.116) 56(84) bytes of data.
64 bytes from tomcat-serv-adm1-e1000g1.xypoint.com (192.168.66.116): icmp_req=1 ttl=250 time=22.5 ms
64 bytes from tomcat-serv-adm1-e1000g1.xypoint.com (192.168.66.116): icmp_req=2 ttl=250 time=19.5 ms
64 bytes from tomcat-serv-adm1-e1000g1.xypoint.com (192.168.66.116): icmp_req=3 ttl=250 time=17.5 ms
^C
--- tomcat-serv-adm1-e1000g1.xypoint.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 17.554/19.891/22.562/2.064 ms