问ansible win_ping收到一个错误

EN

 PS C:\Users\name.domain> Winrm quickconfig
 WinRM service is already running on this machine.
 WinRM is already set up for remote management on this computer.

 # klist
 Ticket cache: FILE:/tmp/krb5cc_0
 Default principal: user_name@domain.local

Valid starting       Expires              Service principal
09/19/2016 10:02:18  09/19/2016 20:02:18  krbtgt/DOMAIN.LOCAL@DOMAIN.LOCAL
    renew until 09/26/2016 10:02:12


/etc/ansible/hosts

 [local]
 127.0.0.1

 [windows]
 ip address 

[windows:vars]
ansible_user= name@Domain.com
ansible_password= password
ansible_port= 5985
ansible_connection= winrm



# ansible windows -m win_ping
 ip_address | UNREACHABLE! => {
 "changed": false,
"msg": "kerberos: requested auth method is kerberos, but requests_kerberos    is not installed, ssl: HTTPSConnectionPool(host='ip_address', port=5986): Max   retries exceeded with url: /wsman (Caused by   ConnectTimeoutError(<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x3585d90>, 'Connection to ip_address timed out. (connect timeout=30)'))",
"unreachable": true
}