python-备份mysql数据库

1. python-备份mysql数据库

• 源码安装python3环境

  • 下载版本：https://www.python.org/downloads/source/
    

    wget https://www.python.org/ftp/python/3.8.6/Python-3.8.6.tgz
    yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel
    tar zxvf Python-3.8.6.tgz
    cd Python-3.8.6
    ./configure
    make && make install
    

  • liunx下执行命令尝试
    

• 使用pip3安装连接mysql工具

  pip3 install pymysql
  

• 创建mysql备份文件

  cd /root/
  touch backup_db.py
  

• 编写backup_db.py备份mysql数据库文件

  #!/usr/bin/env python
  # coding: utf-8
  
  import os
  import pymysql
  import time
  
  ''' 定义变量 '''
  databases = ["test-cmdb","vuecli_shop"]  # 定义要备份的数据库名
  sql_host = '127.0.0.1'
  sql_user = 'root'  # 数据库登陆用户
  sql_pwd = '123456'  # 数据库登陆密码
  root_dir = '/tmp/baksql/'  # 存放sql文件的地址
  
  
  ''' 创建存放备份文件的文件夹 '''
  if not os.path.exists(root_dir):  # 判断如果没有目录
      os.mkdir(root_dir)  # 创建
  print('创建文件夹成功:', os.path.abspath(root_dir))  # 打印创建成功
  
  
  ''' 开始备份到指定文件夹 '''
  os.chdir(root_dir)  # 改变当前工作目录到指定的路径
  for database_name in databases:  # 循环数据库
      today_sql = time.strftime('%Y%m%d')+'_'+database_name+'.sql'   # 定义数据库文件名变量
      # 编写cmd语句 
      sql_comm="mysqldump -u%s -p%s %s > %s"%(sql_user,sql_pwd,database_name,today_sql) # 定义备份数据库变量 
      if os.system(sql_comm) == 0: # 如果上一条执行结果等于0，表示成功 
          print(database_name, 'is backup successfully!') # 打印成功信息 
          print('备份文件地址:',os.path.abspath('./')+today_sql)
      else: # 备份失败 
          print(database_name, 'is backup fai!') # 打印成功信息
  

• 执行结果

  (python_3.8_base) [admin@shichaodeMacBook-Pro 01-python-基础]# python backup_db.py
  创建文件夹成功: /tmp/backup_sql
  mysqldump: [Warning] Using a password on the command line interface can be insecure.
  test-cmdb is backup successfully!
  备份文件地址: /private/tmp/backup_sql20220623_test-cmdb.sql
  mysqldump: [Warning] Using a password on the command line interface can be insecure.
  vuecli_shop is backup successfully!
  备份文件地址: /private/tmp/backup_sql20220623_vuecli_shop.sql