mysqldump 在线备份的一个好用的脚本 zt

MYSQL_CONN="-hhostip -uusername -ppassword" 
mysql ${MYSQL_CONN} -A -e"FLUSH TABLES WITH READ LOCK; SELECT SLEEP(86400)" & 
SEARCHING_FOR_SLEEP=0 
while [ ${SEARCHING_FOR_SLEEP} -eq 0 ] 
do 
    sleep 3 
    SEARCHING_FOR_SLEEP=`${MYSQL} ${MYSQL_CONN} -A -e"SHOW PROCESSLIST;" | grep -c "SELECT SLEEP(86400)"` 
done 
sleep 1 
SLEEP_ID=`mysql ${MYSQL_CONN} -A -e"SHOW PROCESSLIST;" | grep "SELECT SLEEP(86400)" | awk '{print $1}'` 
 
mysqldump ${MYSQL_CONN} --master-data=2 --single-transaction --flush-privileges --routines --triggers --all-databases > /root/mydata.sql 
 
mysql ${MYSQL_CONN} -A -e"KILL ${SLEEP_ID}" 

http://dba.stackexchange.com/questions/8759/set-up-a-mysql-slave-using-mysqldump-to-get-the-initial-data