Python自动化开发 - 堡垒机实例

本节内容

一、堡垒机介绍

　　1. SSHClient

　　2. SFTPClient

　　3. Transport

二、堡垒机实现

一、堡垒机介绍

1. SSHClient

　　用户连接远程服务器并执行基本命令

1.1 基于用户名密码连接：

import paramiko

# 创建SSH对象

ssh = paramiko.SSHClient()

# 允许连接不在know_hosts文件中的主机

ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

# 连接服务器

ssh.connect(hostname='192.168.1.1', port=22, username='root', password='123')

# 执行命令

stdin, stdout, stderr = ssh.exec_command('df')

# 获取命令结果

result = stdout.read()

# 关闭连接

ssh.close()

import paramiko

transport = paramiko.Transport(('192.168.1.1', 22))

transport.connect(username='root', password='')

ssh = paramiko.SSHClient()

ssh._transport = transport

stdin, stdout, stderr = ssh.exec_command('df')

print stdout.read()

transport.close()

SSHClient 封装 Transport

1.2 基于公钥密钥连接：

import paramiko

private_key = paramiko.RSAKey.from_private_key_file('/home/auto/.ssh/id_rsa')

# 创建SSH对象

ssh = paramiko.SSHClient()

# 允许连接不在know_hosts文件中的主机

ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

# 连接服务器

ssh.connect(hostname='c1.salt.com', port=22, username='wupeiqi', key=private_key)

# 执行命令

stdin, stdout, stderr = ssh.exec_command('df')

# 获取命令结果

result = stdout.read()

# 关闭连接

ssh.close()

import paramiko

private_key = paramiko.RSAKey.from_private_key_file('/home/auto/.ssh/id_rsa')

transport = paramiko.Transport(('192.168.1.1', 22))

transport.connect(username='root', pkey=private_key)

ssh = paramiko.SSHClient()

ssh._transport = transport

stdin, stdout, stderr = ssh.exec_command('df')

transport.close()

SSHClient 封装 Transport

import paramiko

from io import StringIO

key_str = """-----BEGIN RSA PRIVATE KEY-----

MIIEpQIBAAKCAQEAq7gLsqYArAFco02/55IgNg0r7NXOtEM3qXpb/dabJ5Uyky/8

NEHhFiQ7deHIRIuTW5Zb0kD6h6EBbVlUMBmwJrC2oSzySLU1w+ZNfH0PE6W6fans

H80whhuc/YgP+fjiO+VR/gFcqib8Rll5UfYzf5H8uuOnDeIXGCVgyHQSmt8if1+e

7hn1MVO1Lrm9Fco8ABI7dyv8/ZEwoSfh2C9rGYgA58LT1FkBRkOePbHD43xNfAYC

tfLvz6LErMnwdOW4sNMEWWAWv1fsTB35PAm5CazfKzmam9n5IQXhmUNcNvmaZtvP

c4f4g59mdsaWNtNaY96UjOfx83Om86gmdkKcnwIDAQABAoIBAQCnDBGFJuv8aA7A

ZkBLe+GN815JtOyye7lIS1n2I7En3oImoUWNaJEYwwJ8+LmjxMwDCtAkR0XwbvY+

c+nsKPEtkjb3sAu6I148RmwWsGncSRqUaJrljOypaW9dS+GO4Ujjz3/lw1lrxSUh

IqVc0E7kyRW8kP3QCaNBwArYteHreZFFp6XmtKMtXaEA3saJYILxaaXlYkoRi4k8

S2/K8aw3ZMR4tDCOfB4o47JaeiA/e185RK3A+mLn9xTDhTdZqTQpv17/YRPcgmwz

zu30fhVXQT/SuI0sO+bzCO4YGoEwoBX718AWhdLJFoFq1B7k2ZEzXTAtjEXQEWm6

01ndU/jhAasdfasdasdfasdfa3eraszxqwefasdfadasdffsFIfAsjQb4HdkmHuC

OeJrJOd+CYvdEeqJJNnF6AbHyYHIECkj0Qq1kEfLOEsqzd5nDbtkKBte6M1trbjl

HtJ2Yb8w6o/q/6Sbj7wf/cW3LIYEdeVCjScozVcQ9R83ea05J+QOAr4nAoGBAMaq

UzLJfLNWZ5Qosmir2oHStFlZpxspax/ln7DlWLW4wPB4YJalSVovF2Buo8hr8X65

lnPiE41M+G0Z7icEXiFyDBFDCtzx0x/RmaBokLathrFtI81UCx4gQPLaSVNMlvQA

539GsubSrO4LpHRNGg/weZ6EqQOXvHvkUkm2bDDJAoGATytFNxen6GtC0ZT3SRQM

WYfasdf3xbtuykmnluiofasd2sfmjnljkt7khghmghdasSDFGQfgaFoKfaawoYeH

C2XasVUsVviBn8kPSLSVBPX4JUfQmA6h8HsajeVahxN1U9e0nYJ0sYDQFUMTS2t8

RT57+WK/0ONwTWHdu+KnaJECgYEAid/ta8LQC3p82iNAZkpWlGDSD2yb/8rH8NQg

9tjEryFwrbMtfX9qn+8srx06B796U3OjifstjJQNmVI0qNlsJpQK8fPwVxRxbJS/

pMbNICrf3sUa4sZgDOFfkeuSlgACh4cVIozDXlR59Z8Y3CoiW0uObEgvMDIfenAj

98pl3ZkCgYEAj/UCSni0dwX4pnKNPm6LUgiS7QvIgM3H9piyt8aipQuzBi5LUKWw

DlQC4Zb73nHgdREtQYYXTu7p27Bl0Gizz1sW2eSgxFU8eTh+ucfVwOXKAXKU5SeI

+MbuBfUYQ4if2N/BXn47+/ecf3A4KgB37Le5SbLDddwCNxGlBzbpBa0=

-----END RSA PRIVATE KEY-----"""

private_key = paramiko.RSAKey(file_obj=StringIO(key_str))

transport = paramiko.Transport(('192.168.1.1', 22))

transport.connect(username='root', pkey=private_key)

ssh = paramiko.SSHClient()

ssh._transport = transport

stdin, stdout, stderr = ssh.exec_command('df')

result = stdout.read()

transport.close()

print(result)

基于私钥字符串进行连接

2. SFTPClient

　　用于连接远程服务器并执行上传下载

2.1 基于用户名密码上传下载

import paramiko

transport = paramiko.Transport(('hostname',22))

transport.connect(username='root',password='123')

sftp = paramiko.SFTPClient.from_transport(transport)

# 无论是本地还是远程都是文件，而不是目录

# 将location.py 上传至服务器 /tmp/test.py

sftp.put('/tmp/location.py', '/tmp/test.py')

# 将remove_path 下载到本地 local_path

sftp.get('remove_path', 'local_path')

transport.close()

2.2 基于公钥密钥上传下载

import paramiko

private_key = paramiko.RSAKey.from_private_key_file('/home/auto/.ssh/id_rsa')

transport = paramiko.Transport(('hostname', 22))

transport.connect(username='root', pkey=private_key )

sftp = paramiko.SFTPClient.from_transport(transport)

# 将location.py 上传至服务器 /tmp/test.py

sftp.put('/tmp/location.py', '/tmp/test.py')

# 将remove_path 下载到本地 local_path

sftp.get('remove_path', 'local_path')

transport.close()

3. Transport

无论SSHClient还是SFTPClient，本质都是socket，可以定制transport，取意"运输"

transport = paramiko.Transport(('hostname',22))

transport.connect(username='root',password='123')

import paramiko

class SshHelper(object):

    def __init__(self,host,port,username,pwd):

        self.host = host

        self.port = port

        self.username = username

        self.pwd = pwd

        self.transport = None

    def connect(self):

        transport = paramiko.Transport((self.host, self.port,))

        transport.connect(username=self.username, password=self.pwd)

        self.transport = transport

    def upload(self, local, target):

        sftp = paramiko.SFTPClient.from_transport(self.transport)

        # 将location.py 上传至服务器 /tmp/test.py

        sftp.put(local, target)

        # 将remove_path 下载到本地 local_path

        # sftp.get('remove_path', 'local_path')

    def load(self, target, local):

        sftp = paramiko.SFTPClient.from_transport(self.transport)

        # 将location.py 上传至服务器 /tmp/test.py

        sftp.get(target, local)

        # 将remove_path 下载到本地 local_path

        # sftp.get('remove_path', 'local_path')

    def cmd(self, shell):

        ssh = paramiko.SSHClient()

        ssh._transport = self.transport

        stdin, stdout, stderr = ssh.exec_command(shell)

        result = stdout.read()

        print(str(result, encoding='utf-8'))

    def close(self):

        self.transport.close()

if __name__ == '__main__':

    obj = SshHelper('192.168.1.1', 22, 'root', '')

    obj.connect()

    obj.cmd('df')

    obj.close()

自定义SshHelper

二、堡垒机实现

实现思路:

堡垒机执行流程：

管理员为用户在服务器上创建账号（将公钥放置服务器，或者使用用户名密码）
用户登陆堡垒机，输入堡垒机用户名密码，现实当前用户管理的服务器列表
用户选择服务器，并自动登陆
执行操作并同时将用户操作记录

注：配置.brashrc实现ssh登陆后自动执行脚本，如：/usr/bin/python /home/admin/menu.py

巴特西

Python自动化开发 - 堡垒机实例

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