Linux 每天自动备份mysql脚本

最新推荐文章于 2022-09-01 14:03:30 发布

原创最新推荐文章于 2022-09-01 14:03:30 发布 · 136 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#数据库 #操作系统 #shell

mysql 自动备份 linux 专栏收录该内容

0 篇文章

订阅专栏

本文介绍了一个自动执行MySQL备份并压缩的shell脚本mysqlbak.sh，包括脚本编写、权限设置、定时任务配置及服务重启步骤。通过脚本实现定期备份数据库，并在特定目录下保存最新五天的备份文件。

1：编写自动执行脚本mysqlbak.sh

#!/bin/sh
# mysql_backup.sh: backup mysql databases and keep newest 5 days backup.
#
# Last updated: 20 March 2006
# ----------------------------------------------------------------------
# This is a free shell script under GNU GPL version 2.0 or above
# Copyright (C) 2006 Sam Tang
# Feedback/comment/suggestions : http://www.real-blog.com/
# ----------------------------------------------------------------------
# your mysql login information
# db_user is mysql username
# db_passwd is mysql password
# db_host is mysql host
# -----------------------------
db_user="username"
db_passwd="pwd"
db_host="localhost"
# the directory for story your backup file.
backup_dir="/usr/data/db_bak/"
# date format for backup file (dd-mm-yyyy)
time="$(date +"%d-%m-%Y")"
# mysql, mysqldump and some other bin's path
MYSQL="/usr/bin/mysql"
MYSQLDUMP="mysqldump"
MKDIR="/bin/mkdir"
RM="/bin/rm"
MV="/bin/mv"
GZIP="/bin/gzip"
# check the directory for store backup is writeable
test ! -w $backup_dir && echo "Error: $backup_dir is un-writeable." && exit 0
# the directory for story the newest backup
test ! -d "$backup_dir/backup.0/" && $MKDIR "$backup_dir/backup.0/"
# get all databases
all_db="$($MYSQL -u $db_user -h $db_host -p$db_passwd -Bse 'show databases')"
for db in $all_db
do
$MYSQLDUMP -u $db_user -h $db_host -p$db_passwd $db | $GZIP -9 > "$backup_dir/backup.0/$time.$db.gz"
done
# delete the oldest backup
test -d "$backup_dir/backup.5/" && $RM -rf "$backup_dir/backup.5"
# rotate backup directory
for int in 4 3 2 1 0
do
if(test -d "$backup_dir"/backup."$int")
then
next_int=`expr $int + 1`
$MV "$backup_dir"/backup."$int" "$backup_dir"/backup."$next_int"
fi
done

2：chmod 777 mysqlbak.sh

3： crontab -u root -e

4：00 00 * * * yourpath/mysqlbak.sh

5：service crond restart