获取磁盘，内存，CPU使用情况的shell脚本

获取磁盘使用情况

#!/bin/bash
# author: coco
# date: 2020/07/03
# usage: monitor memory status

DATE=$(date +'%Y_%m_%d %H:%M:%S')
IPADDR=$(ifconfig | grep inet | awk 'NR==1{ print $2 }')
MAIL="XXX@163.com"

useRate=$(df -Th | awk '{sum += $6} END {print sum}')

if [[ ${useRate} -ge 90 ]];then
        echo "
        Date: ${DATE}
        Host: ${HOSTNAME}: ${IPADDR}
        Problem: 
                Memory using rate: up ${useRate}%
        " | mail -s "CPU Monitor Warnning" ${MAIL}
fi

获取内存的使用情况

#!/bin/bash
# author: coco
# date: 2020/07/03
# usage: monitor memory status

DATE=$(date +'%Y_%m_%d %H:%M:%S')
IPADDR=$(ifconfig | grep inet | awk 'NR==1{ print $2 }')
MAIL="xxx@163.com"

TOTAL=$(free -mw | awk 'NR==2{ print $2 }')
USE=$(free -mw | awk 'NR==2{ print $3 }')
FREE=$(free -mw | awk 'NR==2{ print $4 }')
CACHE=$(free -mw | awk 'NR==2{ print $7 }')
useRate=$(echo "((${USE}+${CACHE})/${TOTAL})*100" | bc -ql)
freeRate=$(echo "(${FREE}/${TOTAL})*100" | bc -ql)

if [[ ${FREE} -le 100 ]];then
  echo "
	Date: ${DATE}
	Host: ${HOSTNAME}: ${IPADDR}
	Problem: 
		Memory using rate: ${useRate}%
		Memory free rate: ${freeRate}%
	" | mail -s "CPU Monitor Warnning" ${MAIL}
fi

获取CPU的使用情况

#!/bin/bash
# author: coco
# date: 2020/07/03
# usage: monitor memory status

DATE=$(date +'%Y_%m_%d %H:%M:%S')
IPADDR=$(ifconfig | grep inet | awk 'NR==1{ print $2 }')
MAIL="XXX@163.com"

ATE=$(date +'%Y_%m_%d %H:%M:%S')
IPADDR=$(ifconfig | grep inet | awk 'NR==1{ print $2 }')
MAIL="bavduer@163.com"

# 检测vmstat命令是否存在
if ! which vmstat &>/dev/null; then
	yum -y install procps-ng &>/dev/null
	if [ $? -eq 0 ];then
		echo "vmstat already installed"
	fi
fi

US=$(vmstat | awk 'NR==3{ print $13 }')
SY=$(vmstat | awk 'NR==3{ print $14 }')
ID=$(vmstat | awk 'NR==3{ print $15 }')
WA=$(vmstat | awk 'NR==3{ print $16 }')
ST=$(vmstat | awk 'NR==3{ print $17 }')

useTotal=$((${US}+${SY}))
if [[ ${useTotal} -ge 70 ]];then
	echo "
	Date: ${DATE}
	Host: ${HOSTNAME}: ${IPADDR}
	Problem: CPU using rate: ${useTotal}%
	" | mail -s "CPU Monitor Warnning" ${MAIL}
fi