CentOS 下 mysql 备份指令码 (mysqldump)

#!/bin/bash
#全备方式，一般在从机上执行，适用于小中型 mysql 资料库
#删除 15 天以前备份
#作者：fafu_li
#时间：2015.08.10

source /etc/profile #载入系统环境变数
source ~/.bash_profile #载入使用者环境变数
set -o nounset #引用未初始化变数时退出
#set -o errexit #执行 shell 命令遇到错误时退出

user=”root”
password=”123456″
host=”localhost”
port=”3306″
#需备份的资料库，阵列
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=”/wp-content/uploads/sites/3/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 “ 开始备份资料库：${db[*]}”

#备份并压缩
backup_sql(){
dbname=$1
backup_name=”${dbname}_${date}.sql”
#-R 备份储存过程，函式，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
}

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

echo “ 备份结束, 结果检视 $backup_log”
du $backup_path/*$date* -sh | awk ‘{print “ 档案:” $2 “, 大小:” $1}’

原文连结：http://www.centoscn.com/shell/2017/1116/9231.html