share一个自动跳mysql从库上1062错误的脚本_MySQL

share一个自动跳mysql从库上1062错误的脚本

从库突然掉电可能会导致log里的信息没flush到硬盘，于是从库启动之后主从会因为1062(主键重复）而卡住，这里提供一个自动跳1062的脚本

[plain]

#!/bin/sh

MYSQL=mysql

lastPos=0

while [ 1 ]; do

$MYSQL -uroot -e "show slave status/G" > /tmp/.skip

lastError=`cat /tmp/.skip|grep "Last_SQL_Errno"|awk '{print $2}'`

nowPos=`cat /tmp/.skip|grep "Exec_Master_Log_Pos"|awk '{print $2}'`

if [ $lastError -eq 1062 ]; then

if [ $lastPos -ne $nowPos ]; then

echo "blocked, skip one"

$MYSQL -uroot -e "slave stop; set global sql_slave_skip_counter =1; slave start;"

lastPos=$nowPos

else

echo "sleep one second"

sleep 1

fi

elif [ $lastError -eq 0 ]; then

secondsBehind=`cat /tmp/.skip|grep "Seconds_Behind_Master"|awk '{print $2}'`

if [ $secondsBehind -eq 0 ]; then

echo "done"

break

else

echo "$secondsBehind seconds behind server"

sleep 3

fi

else

echo "error $lastError found"

break

fi

done