MySQL binlog自動クリーンアップスクリプト

# vim/data/scripts/delete_mysql_binlog.sh

#!/bin/bash
#=======================================================================================
#        MySQL Master         binlog【   Master    】，       
#        5:30      
#
#    ：   Slave       Master       【  ：check_binlog，  ：binlog_2356】
#              MySQL Master  【              ，            】
#=======================================================================================
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
     
## Slave     
SLAVE_ADDR="XXX.XXX.XXX.XXX"
SLAVE_USER="check_binlog"
SLAVE_PWD="binlog_2356"
     
LOGFILE="/data/logs/db_sync_info.log"
PINGFILE="/tmp/mysqlping.log"
     
## MySQL        
SQLCMD="show slave status"
     
#=======================================================================================
##   MySQL      
if [[ `ps aux | grep mysql[d] | wc -l` -eq 0 ]]; then
    echo The MySQL is not running at: `date +%F" "%H-%M-%S` >> ${LOGFILE}
    exit 1
fi
     
##   Slave     
nohup mysqladmin -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} ping > ${PINGFILE}
retval=`grep "^error" ${PINGFILE}`
rm -f ${PINGFILE}
if [[ "${retval}X" != "X" ]]; then
    echo The MySQL Slave can not be connected at: `date +%F" "%H-%M-%S` >> ${LOGFILE}
    exit 1
fi
     
##        Slave
MASTER_ADDR=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}\G;" | awk '$1=="Master_Host:" {print $2}'`
LOCAL_ADDR=`/sbin/ifconfig eth1 | awk -F ':' '/inet addr/{print $2}' | sed 's/[a-zA-Z ]//g'`
if [[ "${MASTER_ADDR}" != "${LOCAL_ADDR}" ]]; then
    echo The MySQL Slave is not lawful at: `date +%F" "%H-%M-%S` >> ${LOGFILE}
    exit 1
fi
     
##   Slave   ，                
IO_STATUS=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}\G;" | awk '$1=="Slave_IO_Running:" {print $2}'`
SQL_STATUS=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}\G;" | awk '$1=="Slave_SQL_Running:" {print $2}'`
if [[ "${IO_STATUS}" != "Yes" || "${SQL_STATUS}" != "Yes" ]]; then
    echo The MySQL Replication is not synchronous at: `date +%F" "%H-%M-%S` >> ${LOGFILE}
    exit 1
fi
     
##       ，           【      】
mysql -uroot -e "create database if not exists mytestdb;"
sleep 3
     
retval=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "show databases;" | grep mytestdb`
mysql -uroot -e "drop database if exists mytestdb;"
if [[ "${retval}X" = "X" ]]; then
    echo The MySQL Replication is not synchronous at: `date +%F" "%H-%M-%S` >> ${LOGFILE}
    exit 1
fi
     
##         ，          binlog，             binlog
SLAVE_BINLOG1=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}\G;" | awk '$1=="Master_Log_File:" {print $2}'`
SLAVE_BINLOG2=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}\G;" | awk '$1=="Relay_Master_Log_File:" {print $2}'`
##   Master ，   binlog    binlog  
MASTER_BINLOG=`mysql -uroot -e "show master status;" | grep -v '^+' | tail -1 | awk '{print $1}'`
     
##            binlog
if [[ "${SLAVE_BINLOG1}" = "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" = "${MASTER_BINLOG}" ]]; then
    CURR_BINLOG="${MASTER_BINLOG}"
        
##        ，    binlog           binlog
elif [[ "${SLAVE_BINLOG1}" = "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" != "${MASTER_BINLOG}" ]]; then
    CURR_BINLOG="${SLAVE_BINLOG1}"
        
##        ，    binlog  ， relaylog    
elif [[ "${SLAVE_BINLOG1}" != "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" = "${MASTER_BINLOG}" ]]; then
    CURR_BINLOG="${SLAVE_BINLOG2}"
        
else
    echo Has noknown error at：`date +%F" "%H-%M-%S` >> ${LOGFILE}
    exit 1
fi
     
mysql -uroot -e "purge binary logs to '${CURR_BINLOG}';"
if [[ $? -eq 0 ]]; then
    echo Clear MySQL binlog is ok at: `date +%F" "%H-%M-%S` >> ${LOGFILE}
fi

# crontab -e
30 05 * * */data/scripts/delete_mysql_binlog.sh >/dev/null 2>&1