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
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
#########################################################################
# 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）
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
#########################################################################
# 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)
