ansible -i inventory.cfg all -m ping

10.1.1.1 | UNREACHABLE! => {

    "changed": false,

    "msg": "Failed to connect to the host via ssh: no such identity: /root/.ssh/id_rsa.bak: No such file or directory\r\nPermission denied (publickey,gssapi-keyex,gssapi-with-mic,password).\r\n",

    "unreachable": true

}

ansible -vvv -i inventory.cfg all -m ping

ansible 2.6.

  config file = /home/bichenchen001/mongodb_auto_deploy/ansible.cfg

  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']

  ansible python module location = /usr/lib/python2./site-packages/ansible

  executable location = /bin/ansible

  python version = 2.7. (default, Apr  , ::) [GCC 4.8.  (Red Hat 4.8.-)]

Using /home/bichenchen001/mongodb_auto_deploy/ansible.cfg as config file

Parsed /home/bichenchen001/mongodb_auto_deploy/inventory.cfg inventory source with ini plugin

META: ran handlers

<10.1.1.1> ESTABLISH SSH CONNECTION FOR USER: None

<10.1.1.1> SSH: EXEC ssh -C -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/root/.ssh/id_rsa.bak"' -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout= -o 

cp /root/.ssh/id_rsa /root/.ssh/id_rsa.bak