mysql备份脚本(mysqldump)

时间:2022-09-21 23:40:08
#!/bin/bash
#全备方式,一般在从机上执行,适用于小中型mysql数据库
#删除15天以前备份
#作者:fafu_li

#时间:
2015.08.10

source
/etc/profile #加载系统环境变量
source
~/.bash_profile #加载用户环境变量
set
-o nounset #引用未初始化变量时退出
#set
-o errexit #执行shell命令遇到错误时退出

user
="root"
password
="123456"
host
="localhost"
port
="3306"
#需备份的数据库,数组
db
=("test")
#备份时加锁方式,
#MyISAM为锁表
--lock-all-tables,
#InnoDB为锁行
--single-transaction
lock
="--single-transaction"
mysql_path
="/usr/local/mysql"
backup_path
="${mysql_path}/backup"
date=$(date +%Y-%m-%d_%H-%M-%S)
day
=15
backup_log
="${mysql_path}/backup.log"

#建立备份目录
if [ ! -e $backup_path ];then
mkdir -p $backup_path
fi

#删除以前备份
find $backup_path -type f -mtime +$day -exec rm -rf {} \; > /dev/null 2>&1

echo "开始备份数据库:${db[*]}"

#备份并压缩
backup_sql(){
dbname
=$1
backup_name
="${dbname}_${date}.sql"
#
-R备份存储过程,函数,触发器
mysqldump
-h $host -P $port -u $user -p$password $lock --default-character-set=utf8 --flush-logs -R $dbname > $backup_path/$backup_name
if [[ $? == 0 ]];then
cd $backup_path
tar zcpvf $backup_name.tar.gz $backup_name
size
=$(du $backup_name.tar.gz -sh | awk '{print $1}')
rm -rf $backup_name
echo "$date 备份 $dbname($size) 成功 "
else
cd $backup_path
rm -rf $backup_name
echo "$date 备份 $dbname 失败 "
fi
}

#循环备份
length
=${#db[@]}
for (( i = 0; i < $length; i++ )); do
backup_sql ${db[$i]}
>> $backup_log 2>&1
done

echo "备份结束,结果查看 $backup_log"
du $backup_path/*$date* -sh | awk '{print "文件:" $2 ",大小:" $1}'