十六.監控系統cpu.內存，磁盤等，自動報警，發送郵件
發送郵箱小工具，將它放在#/usr/bin/mail chmod +x /usr/bin/mail
#!/usr/bin/python
#-*- coding: UTF-8 -*-
import sys
import smtplib
import email.mime.multipart
import email.mime.text
server = ‘smtp.163.com‘
port = ‘25‘
def sendmail(server,port,user,pwd,msg):
smtp = smtplib.SMTP()
smtp.connect(server,port)
smtp.login(user, pwd)
smtp.sendmail(msg[‘from‘], msg[‘to‘], msg.as_string())
smtp.quit()
print(‘郵件發送成功email has send out !‘)
if __name__ == ‘__main__‘:
msg = email.mime.multipart.MIMEMultipart()
msg[‘Subject‘] = ‘監控‘
msg[‘From‘] = [email protected]
msg[‘To‘] = [email protected]
user = ‘python4_mail‘
pwd = ‘sbalex3714‘
content=‘%s\n%s‘ %(‘\n‘.join(sys.argv[1:4]),‘ ‘.join(sys.argv[4:])) #格式處理，專門針對我們 的郵件格式
txt = email.mime.text.MIMEText(content, _charset=‘utf-8‘)
msg.attach(txt)
sendmail(server,port,user,pwd,msg)
監控腳本
#!/bin/bash
#/author/dengsiyuan
cpu_limit=0 #定義cpu報警線
memory_limit=0 #定義內存報警線
disk=‘/dev/sda1‘ # 定義要監控的磁盤
disk_inode_limit=0 #定義磁盤inode報警線
disk_space_limit=0 #定義磁盤使用空間報警線
function bc_install() #查看是否安裝了bc軟件包
{
rpm -qa |grep ‘^bc.*$‘ >> /dev/null
if [ $? -eq 0 ];then
echo ‘bc has been installed‘
else
yum install bc -y
fi
}
function nettools_install() #查看是否安裝了nettools 軟件包
{
rpm -qa |grep net-tools >> /dev/null
if [ $? -eq 0 ];then
echo ‘nettools has been installed‘
else
yum install net-tools -y
Fi
}
function monitor_cpu()
{
cpu_id_free= `vmstat 1 5 |awk ‘NR>=3{ x = x + $15 } END {print x/5}‘|awk -F. ‘{print $1}‘`
#提取CPU空余空間
cpu_used= $((100-cpu_id_free)) #提取CPU使用空間
if [ $cpu_used -gt $cpu_limit ]then; #與cpu使用率報警線比較
msg="TIME:$(date +%F_%T)
HOSTNAME:$(hostname)
IPADDR:$(ifconfig |awk ‘NR==2{print $2}‘)
MSG:cpu usage exceeds the limit ,current value is ${cpu_used}%"
echo $msg
/usr/bin/mail $msg
fi
}
function monitor_mem()
{
mem_total=`free |awk ‘NR==2{print $2}‘` #提取內存總量
mem_used=`free |awk ‘NR==2{print $3}‘` #提取內存使用
mem_percent=`echo "scale=2;$mem_used/$mem_total" |bc -l |cut -d. -f2` #計算內存使用率
if [ $mem_percent -gt $mem_limit ];then #與內存使用率報警線比較
msg="TIME:$(date +%F_%T)
HOSTNAME:$(hostname)
-- IPADDR:$(ifconfig |awk ‘NR==2{print $2}‘)
MSG:mem usage exceeds the limit,current value is ${mem_percent}%"
echo $msg
/usr/bin/mail $msg # 調用郵件
fi
}
function monitor_disk_inode()
{
disk_inode_used=`df -i $disk |awk ‘NR==2{print $5}‘|cut -d% -f1` #提取磁盤Inode使用情況
if [ $disk_inode_used -gt $disk_inode_limit ];then #比較
msg="TIME:$(date +%F_%T)
HOSTNAME:$(hostname)
IPADDR:$(ifconfig |awk ‘NR==2{print $2}‘)
MSG:disk_inode usage exceeds the limit,current vaule is ${disk_inode_used}%"
echo $msg
/usr/bin/mail $msg
fi
}
function monitor_disk_space()
{
disk_space_used=`df $disk |awk ‘NR==2{print $5}‘|cut -d% -f1` #提取磁盤使用情況
if [ $disk_space_used -gt $disk_space_limit ];then #比較
msg="TIME:$(date +%F_%T)
HOSTNAME:$(hostname)
--PADDR:$(ifconfig |awk ‘NR==2{print $2}‘)
MSG:disk_space_used usage exceeds the limit,current vaule is ${disk_space_used}%"
echo $msg
/usr/bin/mail $msg
fi
}
bc_install
nettools_install
monitor_cpu &>> /tmp/monitor.log
monitor_mem &>> /tmp/monitor.log
monitor_disk_inode &>> /tmp/monitor.log
monitor_disk_space &>> /tmp/monitor.log
十六.監控系統cpu.內存，磁盤等，自動報警，發送郵件