shell监控系统资源邮件报警的脚本

今天打开虚拟机，发现有个监控脚本，不知道何时从哪里摘来的，先收藏于博客吧。

#!/bin/bash
MAILLIST="604052046@qq.com"    #emailist
MEM_CORDON=100   #内存使用大于这个值报警
SWAP_CORDON=50  #交换区使用值大于这个报警
CPU_CORDON=5    #cpu空闲小于这个值报警
DISK_CORDON=85  #磁盘占用大于这个值报警
HOSTNAME=`hostname`
DATA=`date`
send_warning()
{
echo $MESSAGE | /bin/mail -s "$TITLE" "$MAILLIST"
}
if [ $# -ne 0 ];then
DISK_DIR=$1
else
DISK_DIR="/dev/sdb1"
fi
#MEM|SWAP check
MEMSTATUS=`free | grep "Mem" | awk '{printf("%d", $3*100/$2)}'`
SWAPSTATUS=`free | grep "Swap" | awk '{printf("%d", $3*100/$2)}'`
if [ $MEMSTATUS -ge $MEM_CORDON ];then
TITLE="[bad_girl]:$HOSTNAME mem usage"
MESSAGE="Time:${DATA},Mem_used:${MEMSTATUS}%,Swap_used:${SWAPSTATUS}%"
send_warning
fi
if [ $SWAPSTATUS -ge $SWAP_CORDON ];then
TITLE="[bad_girl]:$HOSTNAME Swap usage"
MESSAGE="Time:${DATA},Mem_used:${MEMSTATUS}%,Swap_used:${SWAPSTATUS}%"
send_warning
fi
#cpu
CPUSTATUS=`vmstat | awk '{print $15}' | tail -1`
if [ $CPUSTATUS -le $CPU_CORDON ];then
TITLE="[bad_girl]:$HOSTNAME cpu usage"
MESSAGE="Time:${DATA},MCpu_free:${CPUSTATUS}%"
fi
#disk use n%
DISKSTATUS=`df -h $DISK_DIR | awk '{print $5}' | tail -1 | tr -d %`
if [ $DISKSTATUS -ge $DISK_CORDON ];then
TITLE="[bad_girl]:$HOSTNAME disk usage"
MESSAGE="Time:${DATA},Disk_used:${DISKSTATUS}%"
send_warning
fi

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