python连接服务器上传文件，后台执行命令

上传文件

import os

import paramiko
import logging

from django.core.cache import cache

from YunTai import settings

def upload_files(connectIp):
    ssh = paramiko.Transport((connectIp, 22))
    try:
        password = cache.get('backup_server_password')
        if not password:
            return False
        ssh.connect(username="root", password=password)
        sftp = paramiko.SFTPClient.from_transport(ssh)
        localfile = os.path.join(settings.BASE_DIR, 'media/authFile/dr_server')
        print(localfile)

        sftp.put(localfile, "/root/dr_server")

    except Exception as e:
        return False

    print("上传")
    ssh.close()
    return True

后台执行命令

def handle_server(connectIp):
    cmd = '''
    cd /root/dr;
    mkdir old;
    killall dr_server;
    ls;
    ls;
    cd ..;
    cd -;
    mv -f dr_server old;
    mv ../dr_server .;
    chmod 777 dr_server;
    ./dr_start.sh;
    '''

    try:
        server_data = cache.get('server_data')
        if not server_data:
            return False
        connectIp = server_data.get('server_ip')
        password = server_data.get('password')
        cache.delete('server_data')
        client = paramiko.SSHClient()
        client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        client.connect(connectIp, 22, 'root', password, timeout=60)
        stdin, stdout, stderr = client.exec_command('nohup /root/dr/handle_server/update_server.sh > /dev/null 2>&1 &')
        client.close()
        return True
    except Exception as e:
        print(e)
        logger.error(e)
        return False