Python如何在SSH隧道后打开和读取远程文件

Question

我正在使用 SSHTunnelForwared 并使用以下代码成功进入远程服务器：

with SSHTunnelForwarder((ssh_host, ssh_port), ssh_username=ssh_user,
        ssh_password=ssh_password,
        remote_bind_address=("127.0.0.1", 3306)) as tunnel:

我现在想从服务器内部的路径中将文件读入 python。假设路径是/home/user/file.json

如果我做类似的事情

with open('/home/user/file.json','r') as f:
    data = json.loads(f)

程序抛出错误提示：

FileNotFoundError: [Errno 2] No such file or directory: '/home/user/file.json'

显然找不到该文件。我需要做什么才能找到目录？我在ssh 块内工作，所以我可以访问tunnel 对象。

Answer 1

当你连接时你不知道你的默认密码所以尝试访问你的路径然后读取你的文件，希望这对你有帮助

import paramiko

client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect("5.206.0.0", username = "root", password = "root")
command = "cd /var/www/html/ && ls"
stdin, out, err = client.exec_command(command)
print "stdout: " + out.read()

也适用于 sql：

import pymysql
import paramiko
import pandas as pd
from paramiko import SSHClient
from sshtunnel import SSHTunnelForwarder
from os.path import expanduser

home = expanduser('~')
mypkey = paramiko.RSAKey.from_private_key_file(home + pkeyfilepath)

sql_hostname = 'sql_hostname'
sql_username = 'sql_username'
sql_password = 'sql_password'
sql_main_database = 'db_name'
sql_port = 3306
ssh_host = 'ssh_hostname'
ssh_user = 'ssh_username'
ssh_port = 22
sql_ip = '1.1.1.1.1'

with SSHTunnelForwarder(
        (ssh_host, ssh_port),
        ssh_username=ssh_user,
        ssh_pkey=mypkey,
        remote_bind_address=(sql_hostname, sql_port)) as tunnel:
    conn = pymysql.connect(host='127.0.0.1', user=sql_username,
            passwd=sql_password, db=sql_main_database,
            port=tunnel.local_bind_port)
    query = '''SELECT VERSION();'''
    data = pd.read_sql_query(query, conn)
    conn.close()