#!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
export PATH
#数据库用户名
dbuser='root'
#数据库用密码
dbpasswd='password'
#需要备份的数据库，多个数据库用空格分开
dbname=('dbname1' 'dbname2 'dbname3' 'dbname4' 'dbname5')
#备份时间
backtime=`date +%Y%m%d%H%M%S`
#mysql安装路径
mysqlpath='/data/mysql5.6/bin'
#日志备份路径
logpath='/store/bank/data'
#数据备份路径
datapath='/store/bank/data'
#日志记录头部
echo ‘"备份时间为${backtime},备份数据库表 ${dbname} 开始" >> ${logpath}/log.log
#正式备份数据库 取上面变量数组
for DB_name in ${dbname[@]}; do
#mysqldump -u ${dbuser} -p${dbpasswd} ${DB_name}> ${logpath}/${backtime}.sql 2>> ${logpath}/mysqllog.log
source=`${mysqlpath}/mysqldump -u${dbuser} -p${dbpasswd} ${dbname}> ${logpath}/${DB_name}${backtime}.sql` 2>> ${logpath}/mysqllog.log;
#备份成功以下操作
if [ "$?" == 0 ];then
cd $datapath
#为节约硬盘空间，将数据库压缩
tar jcvf ${DB_name}${backtime}.tar.bz2 ${table}${backtime}.sql > /dev/null
#删除原始文件，只留压缩后文件
rm -f ${datapath}/${DB_name}${backtime}.sql
#删除七天前备份，也就是只保存7天内的备份
find $datapath -name "*.tar.bz2" -type f -mtime +7 -exec rm -rf {} \; > /dev/null 2>&1
echo "数据库表 ${dbname} 备份成功!!" >> ${logpath}/mysqllog.log
else
#备份失败则进行以下操作
echo "数据库表 ${dbname} 备份失败!!" >> ${logpath}/mysqllog.log
fi
done
