mysqldump如何实现全量和增量备份脚本

#!/bin/bash

#

#mysql 全量备份脚本，建议在slave从库上运行，并开启log_slave_updates=1

backupdir=/backup

dateDIR=`date +%Y-%m-%d`

logsindexPath=/usr/local/mysql/logs/ray-bin.index

if [ ! -d $backupdir ];then

    mkdir -p $backupdir

fi

cd ${backupdir}

if [ ! -d $dateDIR ];then

    mkdir -p $dateDIR

fi

for i in `mysql -uroot -p123456 -e "show databases" 2>&1 | grep -v -E "Database|Warning"`

do

    mysqldump -uroot -p123456 --default-character-set=utf8 -q --flush-privileges --single-transaction --master-data=1 --flush-logs --routines --triggers --events --hex-blob -E -R -B testdb | gzip > ${backupdir}/${dateDIR}/mysql_back_${i}_${dateDIR}.sql.gz

done

binlog_rm=`tail -n 1 ${logsindexPath} | awk -F '/' '{print $NF}'`

mysql -uroot -p123456 -e "purge binary logs to '${binlog_rm}'"

#!/bin/bash

#mysql 增量备份脚本，建议在slave从服务器上运行，并开启log_slave_updates=1

backupdir=/backup

dateDIR=`date +%Y-%m-%d`

logsIndexPath=/usr/local/mysql/logs/ray-bin.index

mysqladmin -uroot -p123456 flush-logs

binlog_cp=`head -n -1 ${logsIndexPath}`

for i in ${binlog_cp}

do

    mysql -uroot -p123456 -e "\! cp -p ${i} ${backupdir}/${dateDIR}/"

done

binlog_rm=`tail -n 1 ${logsIndexPath} | awk -F '/' '{print $NF}'`

mysql -uroot -p123456 -e "purge binary logs to '${binlog_rm}'"