本篇文章为大家展示了使用shell怎么实现一个mysql定时备份、删除、恢复功能,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。
mysql备份脚本:
脚本实现:按照数据库名称,全量备份mysql数据库并定期删除
#!/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:lcm_linux #时间:2019.08.06 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 #备份用户---需要在mysql中提前创建并授权 #GRANT SELECT,RELOAD,LOCK TABLES,REPLICATION CLIENT,SHOW VIEW,TRIGGER,EVENT ON *.* TO 'backup'@'%' IDENTIFIED BY 'baifendian'; user="backup" #备份用户密码 password="123456" #mysql连接端口 port="3306" mysql_path="/usr/local/mysql" date=$(date +%Y-%m-%d_%H-%M-%S) del_date=$(date +%Y-%m-%d) #备份路径---需要修改 backup_path="/opt/mysql_backup/new-bak/data" backup_log_path="/opt/mysql_backup/new-bak/log" day=0 backup_log="/opt/mysql_backup/new-bak/log/mysqldump_backup_${date}.log" # 除了127.0.0.1以外的ip截取 /sbin/ifconfig -a|grep inet|grep -v 127.0.0.1|grep -v inet6|awk '{print $2}'|tr -d "addr:" #删除以前备份 find ${backup_path} -type f -mtime +$day -name "*.tar.gz" -exec rm -rf {} \; > /dev/null 2>&1 for f in `ls $backup_path`; do if [[ $f = ${del_date}_* ]]; then rm -rf $backup_path/$f fi done #建立备份目录 if [ ! -e $backup_path/${date} ];then mkdir -p {$backup_path/${date},$backup_log_path} fi #echo "开始备份所有数据库" echo "备份开始,结果查看 $backup_log" echo "==========All databases backups begin==========" >>$backup_log #备份并压缩 for dbname in $(mysql -P$port -u$user -p$password -A -e "show databases\G"|grep Database|grep -v schema|grep -v test|awk '{print $2}') do sleep 1 mysqldump -P$port -u$user -p$password $dbname > $backup_path/${date}/$dbname.sql if [[ $? == 0 ]];then cd $backup_path/${date} size=$(du $backup_path/${date}/$dbname.sql -sh | awk '{print $1}') echo "备份时间:${date} 备份方式:mysqldump 备份数据库:$dbname($size) 备份状态:成功!" >>$backup_log else cd $backup_path/${date} echo "备份时间:${date} 备份方式:mysqldump 备份数据库:${dbname} 备份状态:失败,请查看日志." >>$backup_log fi done cd $backup_path tar zcpvf mysql_all_databases_$date.tar.gz $date rm -rf $backup_path/$date du mysql_all_databases_$date.tar.gz -sh | awk '{print "文件:" $2 ",大小:" $1}' echo "==========All databases backups over==========" >>$backup_log
配置定时任务:
crontab -e
内容如下:
0 1 * * * /bin/bash /opt/script/mysql_shell/mysqlbackup.sh
附上恢复脚本A:
目标实现:对于删除数据库,根据上述备份脚本产生的备份文件内容,进行恢复数据库操作,包括创建数据库名称
注意:恢复脚本需要手动操作
#! /bin/bash 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 date_tar=$(date +%Y-%m-%d_%H-%M-%S) date=$(date +%Y-%m-%d) local_path=${PWD} user="root" #备份用户密码 password="123456" #mysql连接端口 port="3306" DB_HOST=`/sbin/ifconfig -a|grep inet|grep -v 127.0.0.1|grep -v inet6|awk '{print $2}'|tr -d "addr:"` mysql_path="/usr/local/mysql" read -ep "请输入数据库备份文件的路径: " choose_path if [ ! -d ${choose_path} ];then echo "请输入正确路径,已退出" exit else echo "以下为检测到的数据库文件名称:" cd ${choose_path} for file in $(ls ${choose_path}) do [ -f ${file} ] && echo ${file%.*} && echo ${file%.*} >> ${local_path}/list.txt #先判断是否是目录,然后再输出 done fi cat_list=`cat ${local_path}/list.txt` function recovery(){ for dbname in ${cat_list};do sleep 1 create_db="create database IF NOT EXISTS \`${dbname}\`" mysql -h$DB_HOST -P$port -u$user -p$password -e "${create_db}" mysql -h$DB_HOST -P$port -u$user -p$password -A $dbname < ${choose_path}/$dbname.sql if [[ $? == 0 ]];then echo "恢复时间:${date} 恢复方式:mysqldump 恢复数据库:$dbname 恢复状态:成功!" >> $local_path/recovery_${date}.log else echo "恢复时间:${date} 恢复方式:mysqldump 恢复数据库:${dbname} 恢复状态:失败,请查看日志." >> $local_path/recovery_${date}.log fi done } read -ep "全部恢复输入(A/a),单个恢复输入(B/b):" choose if [ $choose = 'A' -o $choose = 'a' ];then recovery elif [ $choose = 'B' -o $choose = 'b' ];then read -ep "正在单个恢复数据库,请输入想要恢复的数据库名称:" mydatabase echo "正在恢复$mydatabase 请稍后....." create_db="create database IF NOT EXISTS \`${mydatabase}\`" mysql -h$DB_HOST -P$port -u$user -p$password -e "${create_db}" mysql -h$DB_HOST -P$port -u$user -p$password -A $mydatabase < $choose_path/$mydatabase.sql echo "$mydatabase 已成功恢复,恭喜!" exit else echo "输入不符合规则,请重新执行..." exit fi
附上恢复脚本B:
脚本实现:在未删除数据库的情况下,对mysql数据库进行数据恢复,可以选择全部恢复或者逐个恢复。
注意:恢复脚本需要手动操作
#! /bin/bash 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" #备份用户密码 password="123456" #mysql连接端口 port="3306" DB_HOST=`/sbin/ifconfig -a|grep inet|grep -v 127.0.0.1|grep -v inet6|awk '{print $2}'|tr -d "addr:"` mysql_path="/usr/local/mysql" date=$(date +%Y-%m-%d_%H-%M-%S) #备份路径---需要修改 #recovery_path="/opt/mysql_backup/new-bak" #recovery_log="${recovery_path}/mysqldump_recovery_${date}.log" mysql_list=`mysql -h$DB_HOST -P$port -u$user -p$password -A -e "show databases\G"|grep Database|grep -v schema|grep -v test|awk '{print $2}'` echo "数据库名称列表如下:" echo "${mysql_list}" read -p "全部恢复输入(A/a),单个恢复输入(B/b):" choose #echo $choose # if [ $choose = 'A' -o $choose = 'a' -o $choose != 'B' -o $choose != 'b' ];then if [ $choose = 'A' -o $choose = 'a' ];then read -p "正在准备恢复全部数据库,请输入恢复数据文件所在路径:" allpath if [ ! -d $allpath ];then echo "此路径不存在,请重新执行..." exit fi for dbname in ${mysql_list};do sleep 1 create_db="create database IF NOT EXISTS ${dbname}" mysql -h$DB_HOST -P$port -u$user -p$password -e "${create_db}" mysql -h$DB_HOST -P$port -u$user -p$password -A $dbname < $allpath/$dbname.sql if [[ $? == 0 ]];then cd $allpath size=$(du $allpath/$dbname.sql -sh | awk '{print $1}') echo "恢复时间:${date} 恢复方式:mysql 恢复数据库:$dbname($size) 恢复状态:成功!" >> $allpath/recovery_${date}.log else cd $allpath echo "恢复时间:${date} 恢复方式:mysqldump 恢复数据库:${dbname} 恢复状态:失败,请查看日志." >> $allpath/recovery_${date}.log fi done elif [ $choose = 'B' -o $choose = 'b' ];then read -p -e "正在单个恢复数据库,请输入想要恢复的数据库名称:" mydatabase read -p -e "请输入数据库恢复的路径:" mypath if [ ! -d $mypath ];then echo "此路径不存在,请重新执行..." exit elif [ ! -f $mypath/$mydatabase.sql ];then echo "此路径下没有目标数据库文件,请重新执行..." exit elif [ $mydatabase != $mysql_list ];then echo "$mydatabase 不在此数据库中,请确认数据库名称后再试,再见!" else echo "正在恢复$mydatabase 请稍后....." create_db="create database IF NOT EXISTS ${dbname}" mysql -h$DB_HOST -P$port -u$user -p$password -e "${create_db}" mysql -h$DB_HOST -P$port -u$user -p$password -A $mydatabase < $mypath/$mydatabase.sql echo "$mydatabase 已成功恢复,恭喜!" exit fi # fi # fi # fi else # if [ $choose != 'B' -o $choose != 'b' -o $choose != 'A' -o $choose != 'a' ];then echo "输入不符合规则,请重新执行..." exit fi
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