xtrabackup 8.0.22 自动化备份MySQL8脚本

#!/bin/bash
# 备份策略(可以根据需求调整备份策略)
# 周三、周六全量备份
# 周一、周二、周四、周五、周日增量备份

# 全量备份目录
Full=/usr/local/databak/fullbak

# 增量备份目录
Incr=/usr/local/databak/incrbak

# MySQL相关配置信息
DB_HOST='localhost'
DB_PORT=13360
DB_USER='backup'
DB_PASS='Yh03D66h#*.'
DB_SOCK=/usr/local/mysql/mysql.sock
DB_CONF=/etc/my.cnf

# 备份的日志文件
baklog=./back.log

# 备份开始
echo -e "\n\n" | tee -a ${baklog} 2>&1
echo -e "备份开始...\n" | tee -a ${baklog} 2>&1
# 判断当前日期是周几
Week=`date +%w`
case ${Week} in
    3|6)
    # 判断今日为周三、周六则进行全量备份
    # 判断主目录是否存在，不存在则创建
    if [ ! -d "${Full}" ];then
        mkdir ${Full}
    fi
    # 第一步 创建本次的备份目录
    FullBakTime=`date +%Y%m%d-%H%M%S`
    mkdir -p ${Full}/${FullBakTime}_${Week}
    FullBakDir=${Full}/${FullBakTime}_${Week}
    # 第二步 开始全量备份
    echo -e "日期: ${FullBakTime}\n" | tee -a ${baklog} 2>&1
    echo -e "星期: ${Week}\n" | tee -a ${baklog} 2>&1
    echo -e "本次全量备份目录为 ${FullBakDir}\n" | tee -a ${baklog} 2>&1
    xtrabackup --defaults-file=${DB_CONF} --host=${DB_HOST} --user=${DB_USER} --password=${DB_PASS} --socket=${DB_SOCK} --backup --compress --compress-threads=4 --slave-info --target-dir=${FullBakDir} --no-timestamp
    dirStorage=`du -sh ${FullBakDir}`
    echo -e "本次备份数据 ${dirStorage}\n" | tee -a ${baklog} 2>&1
    echo -e "备份完成...\n\n\n" | tee -a ${baklog} 2>&1
    exit 0
    ;;

    0|1|2|4|5)
    # 判断今日为周日、周一、周二、周四、周五时，进行增量备份。由于周日和周四时基于前一天的全量备份进行增量备份的，而周一、周二、周五是基于前一天的增量备份进行增量备份的，所以再进行一次判断。
        case ${Week} in
            0|4)
            # 基于上一次全量备份的增量备份
            # 判断主目录是否存在，不存在则创建
            if [ ! -d "${Incr}" ];then
                mkdir ${Incr}
            fi
            # 第一步 获取上一次全量备份
            LatestFullDir=`ls -lth ${Full}|grep -v total|head -1|awk -F '[ ]+' '{print $NF}'`
            CompliteLatestFullDir=${Full}/${LatestFullDir}
            # 第二步 创建备份目录
            IncrBakTime=`date +%Y%m%d-%H%M%S`
            mkdir -p ${Incr}/${IncrBakTime}_${Week}
            IncrBakDir=${Incr}/${IncrBakTime}_${Week}
            # 第三步 开始增量备份
            echo -e "日期: ${IncrBakTime}\n" | tee -a ${baklog} 2>&1
            echo -e "星期: ${Week}\n" | tee -a ${baklog} 2>&1
            echo -e "本次备份为基于上一次全量备份${CompliteLatestFullDir}的增量备份\n" | tee -a ${baklog} 2>&1
            echo -e "本次增量备份目录为: ${IncrBakDir}\n" | tee -a ${baklog} 2>&1
            xtrabackup --defaults-file=${DB_CONF} --host=${DB_HOST} --user=${DB_USER} --password=${DB_PASS} --socket=${DB_SOCK} --backup --compress --compress-threads=4 --slave-info --parallel=4 --target-dir=${IncrBakDir}  --incremental-basedir=${CompliteLatestFullDir} --no-timestamp
            dirStorage=`du -sh ${IncrBakDir}`
            echo -e "本次备份数据 ${dirStorage}\n" | tee -a ${baklog} 2>&1
            echo -e "备份完成...\n\n\n"  | tee -a ${baklog} 2>&1
            exit 0
            ;;
            1|2|5)
            # 基于上一次增量备份的增量备份
            # 判断主目录是否存在，不存在则创建
            if [ ! -d "${Incr}" ];then
                mkdir ${Incr}
            fi
            # 第一步 获取上一次增量备份
            LatestIncrDir=`ls -lth ${Incr}|grep -v total|head -1|awk -F '[ ]+' '{print $NF}'`
            CompliteLatestIncrDir=${Incr}/${LatestIncrDir}
            # 第二步 创建备份目录
            IncrBakTime=`date +%Y%m%d-%H%M%S`
            mkdir -p ${Incr}/${IncrBakTime}_${Week}
            IncrBakDir=${Incr}/${IncrBakTime}_${Week}
            # 第三步 开始增量备份
            echo -e "日期: ${IncrBakTime}\n" | tee -a ${baklog} 2>&1
            echo -e "星期: ${Week}\n" | tee -a ${baklog} 2>&1
            echo -e "本次备份为基于上一次增量备份${CompliteLatestIncrDir}的增量备份\n" | tee -a ${baklog} 2>&1
            echo -e "本次增量备份目录为: ${IncrBakDir}\n" | tee -a ${baklog} 2>&1
            xtrabackup --defaults-file=${DB_CONF} --host=${DB_HOST} --user=${DB_USER} --password=${DB_PASS} --socket=${DB_SOCK} --backup --compress --compress-threads=4 --slave-info --parallel=4 --target-dir=${IncrBakDir}  --incremental-basedir=${CompliteLatestIncrDir} --no-timestamp
            dirStorage=`du -sh ${IncrBakDir}`
            echo -e "本次备份数据 ${dirStorage}\n" | tee -a ${baklog} 2>&1 
            echo -e "备份完成...\n\n\n"  | tee -a ${baklog} 2>&1
            exit 0
            ;;
            *)
            echo -e "Error\n"
            exit 1
            ;;
        esac
    ;;
    *)
    echo -e "Error\n"
    exit 1
    ;;
esac