python 采用paramiko 远程执行命令及报错解决

这篇文章主要介绍了python采用paramiko远程执行命令及报错解决,文中通过示例代码介绍的非常

这篇文章主要介绍了python 采用paramiko 远程执行命令及报错解决,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

import sys
import paramiko
import config_reader
from check_utils import standout_print, parse_remainsize_response_lines, error_out_print
from time import time


class RemoteModel:
 """ remote options model
 execute remote command
 """

 def __init__(self, host, port=22):
 self.hostname = host
 self.port = port

 self.username, self.password = self.load_conf()
 self.s = None
 self.session = None
 self.init_conn()

 def load_conf(self):
 """
 read config get the login info of remote host machine
 :return:
 login username and password of SSH login of this host
 """
 if self.hostname.find("10.179.1.110") != -1:
 error_out_print("Error : the remote machine of KOR can not provide. please know")
 sys.exit(-1)

 username, password = config_reader.read_login_config(self.hostname)

 if not username or not password:
 error_out_print(
 'Error: can not find ssh login info in this host[%s]. check need ' % self.hostname)
 sys.exit(-1)

 return username, password

 def init_conn(self):
 """
 make a connection with the remote machine
 :return:
 """
 try:
 paramiko.util.log_to_file("paramiko_log.log")
 self.s = paramiko.SSHClient()
 self.s.set_missing_host_key_policy(paramiko.AutoAddPolicy())
 self.s.connect(hostname=self.hostname, port=self.port, username=self.username, password=self.password)

 standout_print('success connect the remote machine [host=%s]' % self.hostname)

 except Exception, e:
 standout_print(str(e))
 standout_print(
 'connect failed.in host[%s] user[%s] or pwd[%s] maybe wrong. ' % (
 self.hostname, self.username, self.password))
 sys.exit(-1)

 def close(self):
 """
 close
 if close can not use this connection
 :return:
 """
 if self.s:
 self.s.close()
 self = None

 def execute_command(self, command):
 """
 :param command:
 execute cmd
 :return:
 the response lines
 """
 standout_print("Info: execute command [%s]" % command)
 stdin, stdout, stderr = self.s.exec_command(command)
 stdin.write("pwd"+"\n")
 stdin.flush()

 response_lines = stdout.readlines()
 error_info = stderr.read()

 if error_info and error_info.strip():
 error_out_print(' remote command error info : %s' % stderr.read())
 error_out_print(error_info)
 return None

 # info_arr = response_info.split('\n')

 return response_lines

 def remain_space_size(self, directory_path):
 """
 :param directory_path:

 :return:
 free size of the directory
 unit size : MB
 """

 cmd = 'sudo df -m %s 1>&2' % directory_path # /usr/local/pgsql/data/ssd1

 response_lines = self.execute_command(cmd)
 # response_lines = self.execute_command_channel(cmd)

 return parse_remainsize_response_lines(response_lines)

 def execute(self, command, sudo=False):
 feed_password = False
 if sudo and self.username != "root":
 command = "sudo %s" % command
 feed_password = "pwd"
 stdin, stdout, stderr = self.s.exec_command(command, get_pty=True)
 if feed_password:
 stdin.write(self.password + "\n")
 stdin.flush()
 return {'out': stdout.readlines(),
 'err': stderr.readlines(),
 'retval': stdout.channel.recv_exit_status()}


if __name__ == '__main__':
 host = ""
 hostname = ""
 command = "sudo df -m /data/pgsql94/data"
 rm = RemoteModel(host=hostname)
 print rm.execute_command(command)
 # print rm.execute("df -m /data/pgsql94/data 1>&2", True)

报错1：

remote command error info : 
sudo: sorry, you must have a tty to run sudo

是由于

self.s.exec_command(command, get_pty=True)

没有设置

get_pty=True

报错2：

会卡死在

stdout.readlines()

是由于 SSH在等待输入用户名的密码

stdin.write("pwd"+"\n")
stdin.flush()

该种方式进行交互，注意必须要换行"\n",和前面必须不能有空格等其他字符，确保密码正确

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。