linux下使用shell脚本监控服务器服务器内存、磁盘、cpu、swap

直接SHELL代码

#!/bin/bash
MAILLIST="foyon0806@gmail.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
转载自 http://www.oschina.net/code/snippet_226718_22452