Python之路第一課Day9--隨堂筆記之一(堡壘機實例以及數據庫操做)未完待續....

1、堡壘機前戲

開發堡壘機以前，先來學習Python的paramiko模塊，該模塊機遇SSH用於鏈接遠程服務器並執行相關操做

SSHClient

用於鏈接遠程服務器並執行基本命令

基於用戶名密碼鏈接：

import paramiko
  
# 建立SSH對象
ssh = paramiko.SSHClient()
# 容許鏈接不在know_hosts文件中的主機
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
# 鏈接服務器
ssh.connect(hostname='c1.salt.com', port=22, username='Jerry', password='123456')
  
# 執行命令
stdin, stdout, stderr = ssh.exec_command('df')
# 獲取命令結果
result = stdout.read()
print(result.decode())
# 關閉鏈接
ssh.close()

import paramiko

transport = paramiko.Transport(('hostname', 22))
transport.connect(username='Jerry', password='123456')

ssh = paramiko.SSHClient()
ssh._transport = transport

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

transport.close()

SSHClient 封裝 Transport

基於公鑰密鑰鏈接：

import paramiko
 
private_key = paramiko.RSAKey.from_private_key_file('/home/auto/.ssh/id_rsa')
 
# 建立SSH對象
ssh = paramiko.SSHClient()
# 容許鏈接不在know_hosts文件中的主機
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
# 鏈接服務器
ssh.connect(hostname='192.168.1.6', port=22, username='Jerry', pkey=private_key)
 
# 執行命令
stdin, stdout, stderr = ssh.exec_command('df')
# 獲取命令結果
result = stdout.read()
 
# 關閉鏈接
ssh.close()

import paramiko

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

transport = paramiko.Transport(('hostname', 22))
transport.connect(username='jerry', pkey=private_key)

ssh = paramiko.SSHClient()
ssh._transport = transport

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

transport.close()

SSHClient 封裝 Transport

SFTPClient

用於鏈接遠程服務器並執行上傳下載

基於用戶名密碼上傳下載

import paramiko
 
transport = paramiko.Transport(('hostname',22))
transport.connect(username='jerry',password='123456')
 
sftp = paramiko.SFTPClient.from_transport(transport)
# 將location.py 上傳至服務器 /tmp/test.py
sftp.put('/tmp/location.py', '/tmp/test.py')
# 將remove_path 下載到本地 local_path
sftp.get('remove_path', 'local_path')
 
transport.close()

基於公鑰密鑰上傳下載

import paramiko
 
private_key = paramiko.RSAKey.from_private_key_file('/home/auto/.ssh/id_rsa')
 
transport = paramiko.Transport(('hostname', 22))
transport.connect(username='jerry', pkey=private_key )
 
sftp = paramiko.SFTPClient.from_transport(transport)
# 將location.py 上傳至服務器 /tmp/test.py
sftp.put('/tmp/location.py', '/tmp/test.py')
# 將remove_path 下載到本地 local_path
sftp.get('remove_path', 'local_path')
 
transport.close()

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import paramiko
import uuid

class Haproxy(object):

    def __init__(self):
        self.host = '172.16.103.191'
        self.port = 22
        self.username = 'wupeiqi'
        self.pwd = '123'
        self.__k = None

    def create_file(self):
        file_name = str(uuid.uuid4())
        with open(file_name,'w') as f:
            f.write('sb')
        return file_name

    def run(self):
        self.connect()
        self.upload()
        self.rename()
        self.close()

    def connect(self):
        transport = paramiko.Transport((self.host,self.port))
        transport.connect(username=self.username,password=self.pwd)
        self.__transport = transport

    def close(self):

        self.__transport.close()

    def upload(self):
        # 鏈接，上傳
        file_name = self.create_file()

        sftp = paramiko.SFTPClient.from_transport(self.__transport)
        # 將location.py 上傳至服務器 /tmp/test.py
        sftp.put(file_name, '/home/wupeiqi/tttttttttttt.py')

    def rename(self):

        ssh = paramiko.SSHClient()
        ssh._transport = self.__transport
        # 執行命令
        stdin, stdout, stderr = ssh.exec_command('mv /home/wupeiqi/tttttttttttt.py /home/wupeiqi/ooooooooo.py')
        # 獲取命令結果
        result = stdout.read()


ha = Haproxy()
ha.run()

Demo