Paramiko 라이브러리 사용하여 ssh 통신 및 hash 값 체크

Using SSH in Python with Paramiko

http://sujitpal.blogspot.kr/2010/11/using-ssh-in-python-with-paramiko.html

Source code for ironic.common.utils

http://docs.openstack.org/developer/ironic/_modules/ironic/common/utils.html

The Threading Module

http://ilab.cs.byu.edu/python/threadingmodule.html