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 sysimport paramikoimport config_readerfrom check_utils import standout_print, parse_remainsize_response_lines, error_out_printfrom time import timeclass 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。