MySQL主从同步

脚本

 [root@test scripts]# cat ss.sh
 #!/bin/bash
 . /etc/init.d/functions
 MYUSER=root
 MYPASS=c565f972
 SOCKET="/data/3307/mysql.sock"
 MYCMD="/application/mysql/bin/mysql -u$MYUSER -p$MYPASS -S $SOCKET"
 STATUS=($($MYCMD -e "show slave status\G;"|egrep "Seconds_Behind|_Running|Last_SQL_Errno"|awk '{print $NF}'))
 ERRNU=(    )
 ###############Effect#####################
 Wait(){
 action "MySql Slave is fail !" /bin/false
 echo -n "Trying to skip the error ,wait 3s"
 for ((i=;i<;i++))
 do
         echo -n "."
         sleep
 done
 echo
 }
 Print(){
 action "Skip error is ok" /bin/true
 action "MySql Slave is ok" /bin/true
 read -p "Show slave status{IO|SQL|Seconds_Behind_Master|Last_SQL_Errno} ? please enter yes
 /no.   :" enter
 case $enter in
         yes)
                 echo "=================================================="
                 $MYCMD -e "show slave status\G;"|egrep "Seconds_Behind|_Running|Last_SQL_Errno"
                 echo "=================================================="
                 exit
                 ;;
         no)
                 exit
                 ;;
 esac
 }

 ###############Check######################
 Check_status(){
 if [ "${STATUS[0]}" = "Yes" -a "${STATUS[1]}" = "Yes" -a "${STATUS[2]}" = "" ]
 then
         action "MySql Slave is ok !" /bin/true
         exit
 else
         sta=
         return $sta
 fi
 }
 Check_err(){
 Check_status
 if [ $? -ne  ]
 then
         Wait            #调用前面的函数
         for ((a=;a<${#ERRNU[*]};a++))
         do
                 A=`echo ${ERRNU[a]}`
                 if [ $A -eq "${STATUS[3]}" ]
                 then
                         $MYCMD -e "stop slave;"
                         $MYCMD -e "set global sql_slave_skip_counter = 1;"
                         $MYCMD -e "start slave;"
                 fi
         done
 fi
 }
 Check_again(){
 STATUS=($($MYCMD -e "show slave status\G;"|egrep "Seconds_Behind|_Running|Last_SQL_Errno"|
 awk '{print $NF}'))
 if [ "${STATUS[0]}" = "Yes" -a "${STATUS[1]}" = "Yes" -a "${STATUS[2]}" = "" ]
 then
         Print        #调用前面的函数，输入yes/no确认有没有跳过错误，看看状态
 else
         action "MySql Slave is fail" /bin/false
         echo "MySql Slave is fail `date +%F\ %T`" >>/tmp/mysql_slave.log
         mail -s "MySql Slave is fail `date +%F\ %T`" topaz1618@.com </tmp/mysql_slave.log
 fi
 }

 ###############main######################
 main(){
 Check_err
 Check_again
 }
 main

执行

没有问题的检查结果

[root@test scripts]# sh ss.sh
MySql Slave is ok !                                        [  OK  ]

有问题的检查结果

[root@test scripts]# sh ss.sh
MySql Slave is fail !                                      [FAILED]
Trying to skip the error ,wait 3s....      　　　　　　　　　　　　　　 　　#提示正在跳过错误
Skip error is ok                                           [  OK  ] 　　#修复成功
MySql Slave is ok                                          [  OK  ] 　　#MySQL主从服务好了
Show slave status{IO|SQL|Seconds_Behind_Master|Last_SQL_Errno} ? please enter yes/no.

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　#敲yes，看状态确认，no会直接退出
   :yes
==================================================
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
        Seconds_Behind_Master:
               Last_SQL_Errno:
==================================================
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