shell脚本实现mysql定时备份、删除、恢复功能

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

总结

以上所述是小编给大家介绍的 shell脚本实现mysql定时备份、删除、恢复 ，希望对大家有所帮助