python 远程执行 ssh 命令 @staticmethod def execute_full(ip, user, password, cmd):     ssh = paramiko.SSHClient()     ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())     tout = 30     try:         ssh.connect(hostname=ip, username=user, password=password, timeout=tout, compress=True, look_for_keys=False, allow_agent=False)     except (socket.error, paramiko.AuthenticationException, paramiko.SSHException) as message:         print "ERROR: SSH connection to "+ip+" failed: " + str(message)         sys.exit(1)     stdin, stdout, ssh_stderr = ssh.exec_command(cmd)     stdout.flush()     out = stdout.read()     print out     ssh.close()     return out