Nine, Shell Script advanced programming combat Part IX

First, monitor mysql master-slave synchronization is abnormal, if abnormal, send text messages to the administrator

1) Develop a daemon script to achieve the detection once every 30 seconds.

2) If the error number is: 1158,1159,1008,1007,1062, skip

3) use arrays to achieve the above requirements

#!/bin/sh
errorno=(1158 1159 1008 1007 1062)
mysql_cmd=" mysql -uroot -poldboy124 -S /data/3307/mysql.sock"
while true
do
flag=0
array=($($mysql_cmd -e "show slave status\G"v|egrep '_Running|Behind_Master|SQL_Errno" |awk '{print $NF}'))
   if [ "${array[0]}" == "Yes" -a "${array[1]}" == "Yes" -a "${array[2]}" =="0" ]
     then    
       echo "Mysql slave is ok"
   else
       for((i=0;i<${#errorno[*]};i++))
       do
          if [ "${array[3]}" -eq "${errorno[$i]}" ];then
              $mysql_cmd -e "stop slave &&set global sql_slave_skip_count=1;start slave;"
          fi
       done
            char="Mysql slave is not ok"
            echo "$char"
            echo "$char"|mail -s "$char" [email protected]
         fi
sleep 5
done