mysql怎么自动增加分区

本篇内容介绍了"mysql怎么自动增加分区"的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！

#!/bin/bashPATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"LANG="en_US.UTF-8"IFS=":"add_partition(){        dbserver="$1"        dbport="$2"        dbuser='root'        dbpwd='test@123456'        dbname="$3"        t_name=$4 # 分区表的表名称         sqlcmd=" SELECT REPLACE(partition_name,'p','')  FROM INFORMATION_SCHEMA.PARTITIONS   WHERE table_name='$t_name' and  TABLE_SCHEMA = '$dbname' ORDER BY partition_ordinal_position DESC LIMIT 1" # 获取最大的分区日期        max_partition=`mysql  -h$dbserver  -u$dbuser  -p$dbpwd --port=$dbport --database $dbname -e"$sqlcmd" | sed  1d `        sqlcmd="select date_add(date_format('${max_partition}01','%Y-%m-%d'),INTERVAL 2 month),replace(left(date_add(date_format('${max_partition}01','%Y-%m-%d'),INTERVAL 1 month),7),'-','')"        t_mid=`mysql  -h$dbserver  -u$dbuser  -p$dbpwd --port=$dbport --database $dbname  -e"$sqlcmd" | sed 1d`        p_time=`echo $t_mid | awk '{print $1}'`        p_name=`echo $t_mid | awk '{print $2}'`        sqlcmd="ALTER TABLE $t_name ADD PARTITION (PARTITION p${p_name} VALUES LESS THAN (to_days('${p_time}')));  "        mysql  -h$dbserver  -u$dbuser  -p$dbpwd --port=$dbport --database $dbname  -e"$sqlcmd"        if [ $? -ne 0 ];then                mess="dbserver:$dbserver;dbport:$dbport;dbname:$dbname;命令:$sqlcmd  执行失败"                # 邮件报警 分区增加失败                exit 0        else                mess="dbserver:$dbserver;dbport:$dbport;dbname:$dbname; 命令:$sqlcmd  执行成功"        fi;}serverlist=('192.168.1.11:3306:test:test' '192.168.1.11:3307:test:test' )i=0let len_serverlist=${#serverlist[@]}-1while [[ $i -le $len_serverlist ]];do        t_list=(${serverlist[i]})        echo ${t_list[0]} ${t_list[1]} ${t_list[2]} ${t_list[3]}        add_partition ${t_list[0]}  ${t_list[1]} ${t_list[2]} ${t_list[3]}         let i++done# 邮件告警分区添加正常

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