ssh 连接

from paramiko import client
ssh = client.SSHClient() # create a new SSHClient object
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) #auto-accept unknown host keys
ssh.connect(hostname, username=username, port=port, password=password) #connect with a host
stdin, stdout, stderr = ssh.exec_command(command) # submit a command to ssh
print stdout.channel.recv_exit_status() #tells the status  1 - job failed