Mysql自动备份--hotcopy

将数据库直接复制一份，自动加锁，只适用于MYISAM表，脚本如下：

#! /bin/bash
# use like this : hotcopydb db1 db2 db3 ...

dbsum=$#
backdir=/opt/hotbackup/myisam

if [ "${dbsum}" -eq 0 ];then
        echo "Error:no database chosed"
        exit 1
fi

if [ -d ${backdir} ];then
        echo "${backdir} exist!"
else
        mkdir -p ${backdir}
fi

LogFile=/var/log/hotcopy_backup.log
touch $LogFile

datetime=`date +"%Y%m%d%H%M%S"`
hotcopypath=${backdir}${datetime}
mkdir -p ${hotcopypath}
echo "------------------------------------------------------------------" >> $LogFile
cd ${backdir}

while [ "`ls  ${backdir} | wc -l`" -gt 2 ]
do
        rm -rf `ls | head -1`
done

echo "hotcopy start at [`date +"%Y-%m-%d %H:%M:%S"`]" >> $LogFile
for i in $*;do
        echo "backing up for database $i starting ..."
        /usr/local/mysql/bin/mysqlhotcopy -uroot -p123456 --flushlog $i ${hotcopypath}
        echo "backing up for database $i completed"
done
echo "hotcopy   end at [`date +"%Y-%m-%d %H:%M:%S"`]" >> $LogFile

echo "tar and gzip the backed file now ..." >> $LogFile
cd ${backdir}
tar zcvf  ${datetime}.tar.gz ${datetime}
rm -rf  ${datetime}
echo "all success ! you  can find the backed file in ${backdir} suffixed by .tar.gz" >> $LogFile

exit 0