#!/bin/bash#数据库IPdbserver=‘127.0.0.1‘#数据库用户名dbuser=‘root‘#数据密码dbpasswd=‘********‘#数据库,如有多个库用空格分开dbname=‘back01‘#备份时间backtime=`date +%Y%m%d`#备份输出日志路径logpath=‘/data/mysqlbak/‘echo "################## ${backtime} #############################" echo "开始备份" #日志记录头部echo "" >> ${logpath}/mysqlback.logecho "-------------------------------------------------" >> ${logpath}/mysqlback.logecho "备份时间为${backtime},备份数据库表 ${dbname} 开始" >> ${logpath}/mysqlback.log#正式备份数据库for table in $dbname; dosource=`mysqldump -h ${dbserver} -u ${dbuser} -p${dbpasswd} ${table} > ${logpath}/${backtime}.sql` 2>> ${logpath}/mysqlback.log;#备份成功以下操作if [ "$?" == 0 ];thencd $datapath#为节约硬盘空间，将数据库压缩tar zcf ${table}${backtime}.tar.gz ${backtime}.sql > /dev/null#删除原始文件，只留压缩后文件rm -f ${datapath}/${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.gz" -type f -mtime +7 -exec rm -rf {} \; > /dev/null 2>&1echo "数据库表 ${dbname} 备份成功!!" >> ${logpath}/mysqlback.logelse#备份失败则进行以下操作echo "数据库表 ${dbname} 备份失败!!" >> ${logpath}/mysqlback.logfidoneecho "完成备份"echo "################## ${backtime} #############################"