linux 定时自动备份 mysql
环境 :linux centos 备份数据库类型 :mysql 备份需要用到的命令: rpm -q mysql //查看mysql是否安装,及其版本mysqldump -uusername -ppassword test test_2014-05-20.sql 一、用命令实现备份 1、备份数据 (某些系统mysqldump会出现找不到命令的情况,请根
环境:linux centos
备份数据库类型:mysql
备份需要用到的命令:
rpm -q mysql //查看mysql是否安装,及其版本 mysqldump -uusername -ppassword test > test_2014-05-20.sql
一、用命令实现备份
1、备份数据 (某些系统mysqldump会出现找不到命令的情况,请根据实际mysql的bin目录操作)
#mysqldump -uusername -ppassword discuz > discuz_2010-04-01.sql
如果数据量大会占用很大空间,这时可以利用gzip压缩数据。
命令如下:
#mysqldump -uusername -ppassword discuz | gzip > discuz_2010-04-01.sql.gz
mysqldump -uroot -p123 test 2>> /mysql_backup/blog.txt | gzip > /mysql_backup/test_`date +%Y-%m-%d_%H%M%S`.sql.gz 2>> /mysql_backup/blog.txt
这里的mysql_backup是我新建的目录,blog.txt是日志文件,我们把错误信息都记录到这里
系统崩溃,重建系统时,可以这样恢复数据:#mysql -uusername -ppassword discuz
二、利用crontab,系统每天定时备份mysql数据库
1、创建保存备份文件的路径/mysqldata
#mkdir /mysql_backup
2、创建/usr/sbin/bakmysql文件
输入以下内容:
mysqldump -uroot -p123 test 2>> /mysql_backup/blog.txt | gzip > /mysql_backup/test_`date +%Y-%m-%d_%H%M%S`.sql.gz 2>> /mysql_backup/blog.txt
#chmod +x /usr/sbin/bakmysql
4、现在添加计划任务
每天3点钟执行备份
第一步:
写cron脚本文件,命名为cronmysql.cron。如:
#01 3 * * * root /usr/sbin/bakmysql //像这种后面是命令路径的 一定要加上执行的用户
第二步:
添加定时任务。执行命令 “crontab crontest.cron”,大功告成
第三步:
"crontab -l" 查看定时任务是否成功或者检测/var/spool/cron下是否生成对应cron脚本
5、重新启动crond
#/etc/rc.d/init.d/crond restart
完成。
三、数据的恢复
只备份单个数据表
<span style="font-family: Arial, Helvetica, sans-serif;">mysqldump -uroot -p123456 database table > dump.sql</span>
mysql -uusername –ppassword 数据库名 <p><span>压缩包恢复</span></p> <pre class="brush:php;toolbar:false">gzip -d <br> <br> <p><span><strong><span><strong>四、进阶篇</strong></span></strong></span></p> <pre class="brush:php;toolbar:false">mkdir /mysql_backup/bak_`date +%Y-%m-%d` 2>> /mysql_backup/blog.txt mysqldump -uroot -p123 test blog_user | gzip > /mysql_backup/bak_`date +%Y-%m-%d`/blog_user_`date +%Y-%m-%d`.sql.gz 2>> /mysql_backup/blog.txt mysqldump -uroot -p123 test users | gzip > /mysql_backup/bak_`date +%Y-%m-%d`/users_`date +%Y-%m-%d`.sql.gz 2>> /mysql_backup/blog.txt
这里展示了 先按年月日的格式 建立文件夹,然后把一些比较重要的表进行备份。本人觉得大的备份,像整个数据库导出的,每几天或每个星期登陆phpmyadmin进行一次就行,没必要用脚本自动

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

DeepSeek is a powerful intelligent search and analysis tool that provides two access methods: web version and official website. The web version is convenient and efficient, and can be used without installation; the official website provides comprehensive product information, download resources and support services. Whether individuals or corporate users, they can easily obtain and analyze massive data through DeepSeek to improve work efficiency, assist decision-making and promote innovation.

One of the major changes introduced in MySQL 8.4 (the latest LTS release as of 2024) is that the "MySQL Native Password" plugin is no longer enabled by default. Further, MySQL 9.0 removes this plugin completely. This change affects PHP and other app

There are many ways to install DeepSeek, including: compile from source (for experienced developers) using precompiled packages (for Windows users) using Docker containers (for most convenient, no need to worry about compatibility) No matter which method you choose, Please read the official documents carefully and prepare them fully to avoid unnecessary trouble.

BITGet is a cryptocurrency exchange that provides a variety of trading services including spot trading, contract trading and derivatives. Founded in 2018, the exchange is headquartered in Singapore and is committed to providing users with a safe and reliable trading platform. BITGet offers a variety of trading pairs, including BTC/USDT, ETH/USDT and XRP/USDT. Additionally, the exchange has a reputation for security and liquidity and offers a variety of features such as premium order types, leveraged trading and 24/7 customer support.

Ouyi OKX, the world's leading digital asset exchange, has now launched an official installation package to provide a safe and convenient trading experience. The OKX installation package of Ouyi does not need to be accessed through a browser. It can directly install independent applications on the device, creating a stable and efficient trading platform for users. The installation process is simple and easy to understand. Users only need to download the latest version of the installation package and follow the prompts to complete the installation step by step.

Gate.io is a popular cryptocurrency exchange that users can use by downloading its installation package and installing it on their devices. The steps to obtain the installation package are as follows: Visit the official website of Gate.io, click "Download", select the corresponding operating system (Windows, Mac or Linux), and download the installation package to your computer. It is recommended to temporarily disable antivirus software or firewall during installation to ensure smooth installation. After completion, the user needs to create a Gate.io account to start using it.

Ouyi, also known as OKX, is a world-leading cryptocurrency trading platform. The article provides a download portal for Ouyi's official installation package, which facilitates users to install Ouyi client on different devices. This installation package supports Windows, Mac, Android and iOS systems. Users can choose the corresponding version to download according to their device type. After the installation is completed, users can register or log in to the Ouyi account, start trading cryptocurrencies and enjoy other services provided by the platform.

Gate.io is a highly acclaimed cryptocurrency trading platform known for its extensive token selection, low transaction fees and a user-friendly interface. With its advanced security features and excellent customer service, Gate.io provides traders with a reliable and convenient cryptocurrency trading environment. If you want to join Gate.io, please click the link provided to download the official registration installation package to start your cryptocurrency trading journey.
