1 vim /etc/keepalived/check_MySQL.sh
  2 #!/bin/bash
  3 MYSQL=/usr/bin/mysql
  4 MYSQL_HOST=localhost
  5 MYSQL_USER=root
  6 CHECK_COUNT=5
  7 counter=1
  8 while true
  9 do
 10         mysql -h $MYSQL_HOST -u $MYSQL_USER -e "show status;"  >/dev/null 2>&1
 11         i=$?
 12         ps aux | grep mysqld | grep -v grep > /dev/null
 
 2>&1
 13         j=$?
 14         if [ $i = 0 ] && [ $j = 0 ]
 15         then
 16                 exit 0
 17         else
 18                 if [ $i = 1 ] && [ $j = 0 ]
 19                 then
 20                         exit 0
 21                 else
 22                         if
 
 [ $counter -gt $CHECK_COUNT ]
 23                         then
 24                                 break
 25                         fi
 26                 let counter++
 27                 continue
 28                 fi
 29         fi
 30         done
 31 /etc/init.d/keepalived stop
 32 exit 1