Mysql数据库定时备份脚本分享

#!/bin/bashPATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbinexport PATH#数据库ipDBHOST=''#数据库用户名DBUSER=''#数据库用密码DBPASSWD=''#需要备份的数据库，多个数据库用空格分开DBNAME=''#备份时间backtime=`date +%Y-%m-%d_%H%M%S`#备份路径（当前目录）BACKPATH=$(dirname $(readlink -f $0))echo $BACKPATH#日志备份路径LOGPATH="${BACKPATH}/log"#数据备份路径DBPATH="${BACKPATH}/db"#创建备份目录[ ! -d "${LOGPATH}" ] && mkdir -p "${LOGPATH}"[ ! -d "${DBPATH}" ] && mkdir -p "${DBPATH}"#日志记录头部echo "备份时间为${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 -u ${DBUSER} -h${DBHOST} -p${DBPASSWD} ${table}> ${LOGPATH}/${backtime}.sql` 2>> ${LOGPATH}/mysqlback.log;#备份成功以下操作 $?获取上一个命令的操作结果，0代表成功if [ "$?" == 0 ];thencd ${LOGPATH}#为节约硬盘空间，将数据库压缩tar -czf ${DBPATH}/${table}${backtime}.tar.gz ./${backtime}.sql > /dev/null#删除原始文件，只留压缩后文件rm -f ${LOGPATH}/${backtime}.sql#删除七天前备份，也就是只保存7天内的备份find $DBPATH -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.logfidone

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