#监控mysql 主从复制
cat chk_mysql_rep.sh 
#!/bin/bash 
# 
#script_name:chk_mysql_rep.sh 
#check mysql replication 
# 
#ssh root@xen "/usr/local/mysql/bin/mysql -uroot -pdongnan -e 'show slave status\G' -ss" | awk'/Running:/ {print $2}' 
#Yes 
#Yes 
# 
#variables 
ssh=/usr/bin/ssh 
sh_dir=/root/sh/ 
crondir=${sh_dir}crontab 
source ${sh_dir}CONFIG 
hosts="$DB_SLAVE_HOSTS"
#main 
#主循环遍历机器 www.it.net.cn
for HOST in $hosts;do 
log=$crondir/log/mysql_replication_error.log 
key=$($ssh root@$HOST "/usr/local/mysql/bin/mysql -uroot -pdongnan -e 'show slave status\G' -ss" | awk '/Running:/ {printf $2}') 
    #无法连接的主机,跳过本次循环 
    test -z "$key" && continue 
    #返回结果真 
    if [ "$key" == "YesYes" ];then 
        #flag真,解除报警 
        if [ -f "${crondir}/log/$HOST.mysql" ];then 
            #sms 
            #for mobile in $MOBILES;do 
                #echo "$HOST replication ok" | /usr/local/bin/gammu --sendsms TEXT "$mobile" -unicode 
            #done 
            #mail 
            for mail in $MAILS;do 
                echo "$HOST replication ok" | mail -s "$HOST replication ok" $mail 
            done 
            #flag 
            rm -f "${crondir}/log/$HOST.mysql" 
        fi 
    #返回结果假 
    else   
check_date=$(date '+ %F %T') 
        #flag假，报警 
        if [ ! -f "${crondir}/log/$HOST.mysql" ];then 
            #sms www.it.net.cn
            #for mobile in $MOBILES;do 
                #echo "$HOST replication error" | /usr/local/bin/gammu --sendsms TEXT "$mobile" -unicode 
            #done 
            #mail 
            for mail in $MAILS;do 
                echo "$HOST replication error" | mail -s "$HOST replication error" $mail 
            done 
            #flag 
            echo "replication error" >"${crondir}/log/$HOST.mysql" 
            #log 
            echo "$check_date $HOST mysql replicaton error" >> $log 
        fi 
    fi 
# 
done 
#