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_file
echo "Starting backup mysql binary logs at $start_time" >>$log_file
for 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 $backup_dir failed"|mail -s "MySQL binary logs backup failed" root@localhost
fi
fi
fi
done
stop_time=$(date +"%F %H:%M:%S")
echo "End backup mysql binary logs at $stop_time" >>$log_file
echo " " >>$log_file
exit 0