日期:2014-05-16 浏览次数:20896 次
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
#!/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