shell实战训练营Day10

shell项目-告警系统main.sh
main.sh内容
#!/bin/bash
#是否发送邮件的开关
export send=1
#过滤ip地址
export addr=/sbin/ifconfig |grep -A1 "ens33: "|awk '/inet/ {print $2}'
dir=pwd
#只需要最后一级目录名
last_dir=echo $dir|awk -F'/' '{print $NF}'
#下面的判断目的是，保证执行脚本的时候，我们在bin目录里，不然监控脚本、邮件和日志很有可能找不到
if [ $last_dir == "bin" ] || [ $last_dir == "bin/" ]; then
conf_file="../conf/mon.conf"
else
echo "you shoud cd bin dir"
exit
fi
exec 1>>../log/mon.log 2>>../log/err.log
echo "date +"%F %T" load average"
/bin/bash ../shares/load.sh
#先检查配置文件中是否需要监控502
if grep -q 'to_mon_502=1' $conf_file; then
export log=grep 'logfile=' $conf_file |awk -F '=' '{print $2}' |sed 's/ //g'
/bin/bash ../shares/502.sh
fi

shell项目-告警系统mon.conf
mon.conf内容
#to config the options if to monitor
定义mysql的服务器地址、端口以及user、password
to_mon_cdb=0 ##0 or 1, default 0,0 not monitor, 1 monitor
db_ip=10.20.3.13
db_port=3315
db_user=username
db_pass=passwd
#httpd 如果是1则监控，为0不监控
to_mon_httpd=0
##php 如果是1则监控，为0不监控
to_mon_php_socket=0
##http_code_502 需要定义访问日志的路径
to_mon_502=1
logfile=/data/log/xxx.xxx.com/access.log
##request_count 定义日志路径以及域名
to_mon_request_count=0
req_log=/data/log/www.discuz.net/access.log
domainname=www.discuz.net

shell项目-告警系统load.sh
load.sh内容
#! /bin/bash
load=uptime |awk -F 'average:' '{print $2}'|cut -d',' -f1|sed 's/ //g' |cut -d. -f1
if [ $load -gt 10 ] && [ $send -eq "1" ]
then
echo "$addr date +%T load is $load" >../log/load.tmp
/bin/bash ../mail/mail.sh [email protected] "$addr_load:$load" cat ../log/load.tmp
fi
echo "date +%T load is $load"

shell项目-告警系统502.sh
• 502.sh内容
#! /bin/bash
d=date -d "-1 min" +%H:%M
c_502=grep :$d: $log |grep ' 502 '|wc -l
if [ $c_502 -gt 10 ] && [ $send == 1 ]; then
echo "$addr $d 502 count is $c_502">../log/502.tmp
/bin/bash ../mail/mail.sh $addr_502 $c_502 ../log/502.tmp
fi
echo "date +%T 502 $c_502"

shell项目-告警系统disk.sh
disk.sh内容
#! /bin/bash
rm -f ../log/disk.tmp
for r in df -h |awk -F '[ %]+' '{print $5}'|grep -v Use
do
if [ $r -gt 90 ] && [ $send -eq "1" ]
then
echo "$addr date +%T disk useage is $r" >>../log/disk.tmp
fi
if [ -f ../log/disk.tmp ]
then
df -h >> ../log/disk.tmp
/bin/bash ../mail/mail.sh $addr_disk $r ../log/disk.tmp
echo "date +%T disk useage is nook"
else
echo "date +%T disk useage is ok"
fi

mail.py 配置文件如下
#!/usr/bin/env python
#-- coding: UTF-8 --
import os,sys
reload(sys)
sys.setdefaultencoding('utf8')
import getopt
import smtplib
from email.MIMEText import MIMEText
from email.MIMEMultipart import MIMEMultipart
from subprocess import *

def sendqqmail(username,password,mailfrom,mailto,subject,content):
gserver = 'smtp.qq.com'
gport = 25

try:
    # msg = MIMEText(unicode(content).encode('utf-8')) //如果发送的邮件有乱码，可以尝试把这行改成如下：
    msg = MIMEText(content,'plan','utf-8') 
    msg['from'] = mailfrom
    msg['to'] = mailto
    msg['Reply-To'] = mailfrom
    msg['Subject'] = subject

    smtp = smtplib.SMTP(gserver, gport)
    smtp.set_debuglevel(0)
    smtp.ehlo()
    smtp.login(username,password)

    smtp.sendmail(mailfrom, mailto, msg.as_string())
    smtp.close()
except Exception,err:
    print "Send mail failed. Error: %s" % err

def main():
to=sys.argv[1]
subject=sys.argv[2]
content=sys.argv[3]
##定义QQ邮箱的账号和密码，你需要修改成你自己的账号和密码（请不要把真实的用户名和密码放到网上公开，否则你会死的很惨）
sendqqmail('[email protected]','aaaaaaaaaa','[email protected]',to,subject,content)

if name == "main":
main()

#####脚本使用说明######
#1. 首先定义好脚本中的邮箱账号和密码
#2. 脚本执行命令为：python mail.py 目标邮箱 "邮件主题" "邮件内容"

shell项目-告警系统mail.sh
mail.sh内容 //其中mail.py内容 如上
log=$1
t_s=date +%s
t_s2=date -d "2 hours ago" +%s
if [ ! -f /tmp/$log ]
then
echo $t_s2 > /tmp/$log
fi
t_s2=tail -1 /tmp/$log|awk '{print $1}'
echo $t_s>>/tmp/$log
v=$[$t_s-$t_s2] ###计时###
echo $v
if [ $v -gt 3600 ]
then
./mail.py $1 $2 $3
echo "0" > /tmp/$log.txt ###计数###
else
if [ ! -f /tmp/$log.txt ]
then
echo "0" > /tmp/$log.txt ###计数###
fi
nu=cat /tmp/$log.txt
nu2=$[$nu+1]
echo $nu2>/tmp/$log.txt
if [ $nu2 -gt 10 ]
then
./mail.py $1 "trouble continue 10 min $2" "$3"
echo "0" > /tmp/$log.txt
fi
fi

难点在于mail.sh中 计时与计数的逻辑关系。