#!/bin/bash#this is a script of mysql backup if [ ! -d /mydata/data1/backup ] ;then mkdir /mydata/data1/backupficd /mydata/data1/backupfile=$(find . -type f -mtime -7 | grep .*all.sql) #查找7天内是否有备份的文件echo $fileif [ -z
#!/bin/bash
#this is a script of mysql backup
if [ ! -d /mydata/data1/backup ] ;then
mkdir /mydata/data1/backup
fi
cd /mydata/data1/backup
file=$(find . -type f -mtime -7 | grep .*all.sql) #查找7天内是否有备份的文件
echo $file
if [ -z $file ] ;then
echo "backup all databases..."
backupfile=$(date +%F-%H-%M-%S)
mysqldump -uroot --lock-all-tables --flush-logs --master-data=2 --all-databases > /mydata/data1/backup/"$backupfile-all.sql"
if [ $? -eq 0 ] ;then
echo "Accomplish,file is $backupfile-all.sql !"
else
echo " Failure !!! "
fi
else #查找倒数第二大的二进制文件，作增量备份
cd ..
echo "All database backups ,now start doing incremental backups!"
a=1
b=1
for file in $(ls |grep mysql-bin |grep -v index);do
num=$(echo $file |cut -d. -f2 )
if [ $num -gt $a ];then
a=$num
fi
done
unset num file
num=1
for file in $(ls |grep mysql-bin |grep -v index);do
num=$(echo $file |cut -d. -f2 )
if [ $num -gt $b -a $num -ne $a ] ; then
b=$num
tmp=$file
fi
done
file1=$(echo $tmp|cut -d. -f1)
file2=$(echo $tmp|cut -d. -f2)
mysqlbinlog $tmp > /mydata/data1/backup/"$file1-$file2.sql"
if [ $? -eq 0 ] ;then
echo "Backup completed,file is "$file1-$file2.sql""
fi
fi
说明：此脚本每七天做一次完全备份，以后每天做一次增量备份，完全备份使用mysqldump客户端工具，增量备份使用mysqlbinlog备份其二进制日志文件。
