mysql增量备份二进制日志shell脚本

#!/bin/bash# Date:2017-10# Description:backup mysql binary logs# Version:0.1 db_user="root"myisam_db="mysql"db_passwd="123456"host="localhost"export PATH="/usr/local/mysql/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"backup_dir="/opt/backup/mysql/bin"log_file="/opt/backup/mysql/bin/bin_log_file.log"bin_index="/mydata/data/mysql-bin.index"data_dir="/mydata/data"mysql="$(which mysql)"$mysql -u$db_user -h$host -p$db_passwd -e "flush logs"num=$(awk 'END{print NR}' $bin_index)counter=0 start_time=$(date +"%F %H:%M:%S")[ ! -d $backup_dir ] && mkdir -p $backup_dir[ ! -f $log_file ] && touch $log_fileecho "Starting backup mysql binary logs at $start_time" >>$log_filefor file in `cat $bin_index`do  base=`basename $file`  counter=$(expr $counter + 1)  if [ $counter -eq $num ];then    echo "Skip $base" >>$log_file  else    if [ ! -f $backup_dir/$base ];then      cp -a $data_dir/$base $backup_dir 2>>$log_file      if [ $? -eq 0 ];then        echo "Backup $base successfully" >>$log_file      else        echo "Backup $base failed" >>$log_file        echo "Backup $base to $backup_dir failed"|mail -s "MySQL binary logs backup failed" root@localhost      fi    fi  fidonestop_time=$(date +"%F %H:%M:%S")echo "End backup mysql binary logs at $stop_time" >>$log_fileecho " " >>$log_fileexit 0