Python 基于docker部署的Mysql备份查询脚本

eight *2024-04-23 22:37

前言

此环境是基于docker部署的mysql，docker部署mysql可以参考如下链接：

docker 部署服务案例-CSDN博客

颜色块文件

python 复制代码 
root@bogon:~ 2024-04-18 16:34:23# cat DefaultColor.py
#########################################################################
#    File Name: DefaultColor.py
#    Author: eight
#    Mail: 18847097110@163.com 
#    Created Time: Thu 11 Apr 2024 10:25:31 PM CST
#########################################################################
#!/usr/bin/env python
# -*- coding: utf-8 -*-
class Color:
        END = '\033[0m'  # normal
        BOLD = '\033[1m'  # bold
        RED = '\033[1;91m'  # red
        GREEN = '\033[1;92m'  # green
        ORANGE = '\033[1;93m'  # orange
        BLUE = '\033[1;94m'  # blue
        PURPLE = '\033[1;95m'  # purple
        UNDERLINE = '\033[4m'  # underline
        CYAN = '\033[1;96m'  # cyan
        GREY = '\033[1;97m'  # gray
        BR = '\033[1;97;41m'  # background red
        BG = '\033[1;97;42m'  # background green
        BY = '\033[1;97;43m'  # background yellow

备份代码

复制代码 
#########################################################################
#    File Name: query_mysql.py
#    Author: eight
#    Mail: 18847097110@163.com 
#    Created Time: Thu 18 Apr 2024 11:12:26 AM CST
#########################################################################
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import pymysql
import configparser
import os
from datetime import datetime
import DefaultColor
import subprocess


# 创建备份目录
def mkdir():
        dir_path = os.getcwd()
        print("--------------------------------------------------------")
        print("当前脚本工作目录：", dir_path)
        mysql_backup_dir = "/opt/mysql_backup"
        print("--------------------------------------------------------")
        if not os.path.exists(mysql_backup_dir):
                os.makedirs(mysql_backup_dir)
        else:
                return f"数据库备份目录 '{mysql_backup_dir}' 已经存在，跳过创建"
        return "数据库备份目录：" + DefaultColor.Color.GREEN + mysql_backup_dir + DefaultColor.Color.END + " 创建成功"



# 备份数据库 
def backup(mysql_backup_dir):
        config = configparser.ConfigParser()
        config.read("config.ini")
        # 获取配置信息
        host = config.get("MYSQL", "MYSQL_HOST")
        username = config.get("MYSQL", "MYSQL_USER")
        password = config.get("MYSQL", "MYSQL_PASSWORD")
        port = config.get("MYSQL", "MYSQL_PORT")
        db = config.get("MYSQL", "MYSQL_DB")
        current_datetime = datetime.now()
        formatted_datetime = current_datetime.strftime("%Y-%m-%d_%H-%M-%S")
        try:
                command = f'docker exec -it mysql-container /bin/bash -c "mysqldump -h {host} -u {username} -p{password} -P {port} -- {db} > {mysql_backup_dir}-{db}-{formatted_datetime}.sql"'
                subprocess.run(command, shell=True, check=True)
                
        except subprocess.CalledProcessError as e:
                print("Database backup failed:", e)
        return f"数据库：{db}备份完成: {mysql_backup_dir}-{db}-{formatted_datetime}.sql"



if __name__ == '__main__':
        backup_dir = mkdir()
        print(backup_dir)
        backup = backup("/opt/mysql_backup")
        print(backup)

此代码如果是本地环境测试的话，逻辑是判断当前本地有没有存储备份数据的目录，没有则创建。

再利用subprocess执行mysqldump命令，按照日期生成.sql文件

效果

因为是docker环境，所以判断当前目录是否存在，是判断的宿主机上的，所以此代码不是很严谨的代码，如果是本地部署的话，把mysqldump命令前面的 docker exec -it mysql-container /bin/bash -c 删除掉即可。

这样备份的脚本就实现了脚本预期效果：将数据库备份到指定的目录下，以日期区别sql文件

全量代码（读取配置和备份和查询）

复制代码 
root@bogon:~ 2024-04-18 16:30:32# cat MysqlBackup.py 
#########################################################################
#    File Name: query_mysql.py
#    Author: eight
#    Mail: 18847097110@163.com 
#    Created Time: Thu 18 Apr 2024 11:12:26 AM CST
#########################################################################
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import pymysql
import configparser
import os
from datetime import datetime
import DefaultColor
import subprocess

# 读取mysql配置文件
def mysql_config():
        config = configparser.ConfigParser()
        config.read("config.ini")

        # 获取配置信息
        host = config.get("MYSQL", "MYSQL_HOST")
        username = config.get("MYSQL", "MYSQL_USER")
        password = config.get("MYSQL", "MYSQL_PASSWORD")
        port = config.get("MYSQL", "MYSQL_PORT")
        db = config.get("MYSQL", "MYSQL_DB")
        print("--------------------------------------------------------")
        return f"主机：{host}\t用户名:{username}\t密码:{password}\t端口:{port}\t数据库:{db}"


# 创建备份目录
def mkdir():
        dir_path = os.getcwd()
        print("--------------------------------------------------------")
        print("当前脚本工作目录：", dir_path)
        mysql_backup_dir = "/opt/mysql_backup"
        print("--------------------------------------------------------")
        if not os.path.exists(mysql_backup_dir):
                os.makedirs(mysql_backup_dir)
        else:
                return f"数据库备份目录 '{mysql_backup_dir}' 已经存在，跳过创建"
        return "数据库备份目录：" + DefaultColor.Color.GREEN + mysql_backup_dir + DefaultColor.Color.END + " 创建成功"


# 查询sql语句
def select():
        config = configparser.ConfigParser()
        config.read("config.ini")
                     
        # 获取配置信息
        host = config.get("MYSQL", "MYSQL_HOST")
        username = config.get("MYSQL", "MYSQL_USER")
        password = config.get("MYSQL", "MYSQL_PASSWORD")
        port = config.get("MYSQL", "MYSQL_PORT")
        db = config.get("MYSQL", "MYSQL_DB")
        # 创建mysql连接信息
        conn = pymysql.connect(host=host, user=username, password=password, port=int(port), db=db)
        cur = conn.cursor()
        # 执行查询语句
        cur.execute("use docker;")
        cur.execute("select * from DockerImages;")
        print("查询到的数据是：")
        # 接收全部的返回结果行
        result = cur.fetchall()
        while True:
                resp = cur.fetchone()
                if resp is None:
                        break
        # 关闭查询游标
        cur.close()
        # 提交
        conn.commit()
        # 关闭链接，释放计算机资源
        conn.close()
        return result


# 备份数据库 
def backup(mysql_backup_dir):
        config = configparser.ConfigParser()
        config.read("config.ini")
        # 获取配置信息
        host = config.get("MYSQL", "MYSQL_HOST")
        username = config.get("MYSQL", "MYSQL_USER")
        password = config.get("MYSQL", "MYSQL_PASSWORD")
        port = config.get("MYSQL", "MYSQL_PORT")
        db = config.get("MYSQL", "MYSQL_DB")
        current_datetime = datetime.now()
        formatted_datetime = current_datetime.strftime("%Y-%m-%d_%H-%M-%S")
        try:
                command = f'docker exec -it mysql-container /bin/bash -c "mysqldump -h {host} -u {username} -p{password} -P {port} -- {db} > {mysql_backup_dir}-{db}-{formatted_datetime}.sql"'
                subprocess.run(command, shell=True, check=True)
                
        except subprocess.CalledProcessError as e:
                print("Database backup failed:", e)
        return f"数据库：{db}备份完成: {mysql_backup_dir}-{db}-{formatted_datetime}.sql"



if __name__ == '__main__':
        mysql_config = mysql_config()
        print(mysql_config)
        backup_dir = mkdir()
        print(backup_dir)

        sector = select()
        #循环打印所有数据，如果此代码是封装在函数内部，那么使用return的话，只会输出第一条数据，所以要在外部调用
        for row in sector:
                print(row)
        backup = backup("/opt/mysql_backup")
        print(backup)

效果

优化

将配置文件信息以字典的方式返回

在查询函数时，使用相应的键来访问这些值

避免重复定义变量

python 复制代码 
#########################################################################
#    File Name: query_mysql.py
#    Author: eight
#    Mail: 18847097110@163.com 
#    Created Time: Thu 18 Apr 2024 11:12:26 AM CST
#########################################################################
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import pymysql
import configparser
import os
from datetime import datetime
import DefaultColor
import subprocess

# 读取mysql配置文件
def mysql_config():
	config = configparser.ConfigParser()
	config.read("config.ini")
	# 获取配置信息
	host = config.get("MYSQL", "MYSQL_HOST")
	username = config.get("MYSQL", "MYSQL_USER")
	password = config.get("MYSQL", "MYSQL_PASSWORD")
	port = config.get("MYSQL", "MYSQL_PORT")
	db = config.get("MYSQL", "MYSQL_DB")
	print("--------------------------------------------------------")
	return {
			"host": host,
			"username": username,
			"password": password,
			"port": port,
			"db": db
			}

	
# 创建备份目录
def mkdir():
	dir_path = os.getcwd()
	print("--------------------------------------------------------")
	print("当前脚本工作目录：", dir_path)
	mysql_backup_dir = "/opt/mysql_backup"
	print("--------------------------------------------------------")
	if not os.path.exists(mysql_backup_dir):
		os.makedirs(mysql_backup_dir)
	else:
		return f"数据库备份目录 '{mysql_backup_dir}' 已经存在，跳过创建"
	return "数据库备份目录：" + DefaultColor.Color.GREEN + mysql_backup_dir + DefaultColor.Color.END + " 创建成功"


# 查询sql语句
def select():
	mysql_connect_info = mysql_config()
	# 创建mysql连接信息 
	conn = pymysql.connect(host=mysql_connect_info["host"],
							user=mysql_connect_info["username"],
							password=mysql_connect_info["password"],
							port=int(mysql_connect_info["port"]),
							db=mysql_connect_info["db"])																													
	cur = conn.cursor()
	# 执行查询语句
	cur.execute("use docker;")
	cur.execute("select * from DockerImages;")
	print("查询到的数据是：")
	# 接收全部的返回结果行
	result = cur.fetchall()
	while True:
		resp = cur.fetchone()
		if resp is None:
			break
	# 关闭查询游标
	cur.close()
	# 提交
	conn.commit()
	# 关闭链接，释放计算机资源
	conn.close()
	return result


# 备份数据库 
def backup(mysql_backup_dir):
	# 获取配置信息
	current_datetime = datetime.now()
	formatted_datetime = current_datetime.strftime("%Y-%m-%d_%H-%M-%S")
	mysql_connect_info = mysql_config()
	try:
		command = f'docker exec -it mysql-container /bin/bash -c "mysqldump -h {mysql_connect_info["host"]} -u {mysql_connect_info["username"]} -p{mysql_connect_info["password"]} -P {mysql_connect_info["port"]} -- {mysql_connect_info["db"]} > {mysql_backup_dir}-{mysql_connect_info["db"]}-{formatted_datetime}.sql"'
		subprocess.run(command, shell=True, check=True)
		
	except subprocess.CalledProcessError as e:
		print("Database backup failed:", e)
	return f'数据库：{mysql_connect_info["db"]}备份完成: {mysql_backup_dir}-{mysql_connect_info["db"]}-{formatted_datetime}.sql'



if __name__ == '__main__':
	backup_dir = mkdir()
	print(backup_dir)

	sector = select()
	#循环打印所有数据，如果此代码是封装在函数内部，那么使用return的话，只会输出第一条数据，所以要在外部调用
	for row in sector:
		print(row)
	backup = backup("/opt/mysql_backup")
	print(backup)
相关推荐
笨鸟先飞，勤能补拙2 小时前
AI 赋能网络安全：技术全景、成熟度评估与实战案例
人工智能·python·安全·web安全·网络安全·sqlite·github
长和信泰光伏储能3 小时前
京津冀光伏发电：绿色能源的未来之路
python·能源
浦信仿真大讲堂3 小时前
从重复操作到自动化闭环：如何让 CST 与 Python 真正协同起来
python·自动化·cst·仿真软件·达索软件
Gu Gu Study3 小时前
ScoutLoop开放域深度研究引擎（agent的初步设计想法）
人工智能·python
神龙天舞20014 小时前
MySQL 备库为什么会延迟好几个小时
android·数据库·mysql
卷无止境4 小时前
写代码这件事，到底该讲究点什么？
后端·python
卷无止境4 小时前
循环复杂度到底在算什么，Python 代码怎么才能写得让人一看就懂
后端·python
lpfasd1234 小时前
MediaCrawler 项目深度分析
chrome·python·chrome devtools
Dxy12393102165 小时前
Python项目打包成EXE完整教程（PyInstaller实战避坑）
开发语言·python
bamb005 小时前
一个项目带你入门AI应用开发01
python
热门推荐
01如何新建文件夹？ 电脑新建文件夹的4种方法02GitHub 镜像站点03国内可直接用、免费额度/永久免费的大模型API清单（含 SiliconFlow、火山、阿里、智谱、百度、Kimi、DeepSeek、DMXAPI 等）042026年7月AI圈大地震：GPT-5.6被政府限制、Claude入驻Slack、Anthropic自研芯片05微信历史版本含下载地址（ Windows PC | 安卓 | MAC ）及设置微信不更新06AI 编程 IDE 全景解析 2026：Agent 全面接管开发链路072026 国产 AI 大模型横评：DeepSeek、通义千问、Kimi、文心一言、星火、豆包谁更能打？08AI科技热点日报 | 2026年07月01日092026 年 AI 大模型 & AI 编程工具实战全总结102026上半年大模型全景技术解读：推理融合、Agent 爆发与多模态统一