python ssh登录linux 上传和下载文件

#!usr/bin/python
# coding: utf-8

import paramiko
import json
remotedir='/tmp/log'
remotefile = 'bst_manager-2019-04-17-info.log'
hostname = '192.168.50.34'
port = 8022
username = 'root'
password ='*****'
command = """tail -n 30 /tmp/log/bst_manager-2019-04-17-info.log | grep 'other'"""

def ssh_remote():
    """ 1、基于用户名和密码连接
    """
    print ("基于用户名和密码连接")
    # 创建SSH对象
    ssh = paramiko.SSHClient()
    # 允许连接不再know_host文件的主机
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    # 连接服务器
    ssh.connect(hostname, port, username, password)
    # 执行命令
    stdin, stdout, stderr = ssh.exec_command(command)
    data = stdout.readline()
    cloud_data = json.loads(data)['other']

    with open("../test_data_dev/data.json", 'w+', 0) as f:
        cloud_data = json.dumps(cloud_data, indent=4, separators=(',', ':'))
        f.write(cloud_data)
    ssh.close()
    print ("1. over\n\n\n")

#
# def ssh_remote_moth2():
#
#     """ 2、基于用户名和密码连接
# """
#     print ("基于用户名和密码连接，使用SSHClient, 封装Transport")
#     ssh = paramiko.SSHClient()
#     transport = paramiko.Transport(sock=(hostname, port))
#     # print transport
#     transport.connect(username=username, password=password)
#
#     ssh._transport = transport
#     stdin, stdout, stderr = ssh.exec_command(command)
#     data = json.loads(stdout.readline())["other"]
#
#     with open("../test_data_dev/data.json", 'w+', 0) as f:
#         cloud_data = json.dumps(data, indent=4, separators=(',', ':'))
#         f.write(cloud_data)
#     ssh.close()
#
#     transport.close()
#     print ('2. over \n\n\n')
#
#
# def down_device_file():
#
#     transport = paramiko.Transport(('192.168.50.34', 8022))
#     transport.connect(username='root', password='O3OwTr(01{@sVhDL')
#
#     sftp = paramiko.SFTPClient.from_transport(transport)
#     sftp.put('/tmp/location.txt', '/tmp/sensoro/server.txt')
#
#     # 检查有无上传成功
#     ssh = paramiko.SSHClient()
#     ssh._transport = transport
#     stdin, stdout, stderr = ssh.exec_command('ls -al /tmp/sensoro/')
#     print(str(stdout.read(), encoding='utf-8'))
#
#     # 将remove_path 下载到本地 local_path
#     sftp.get('/root/conf/bst_conf.json', '/Users/linyue/mywork/server_file/bst_conf.json')
#
#     transport.close()
#     print("3. over")