shell脚本之告警系统

                                            （主目录）
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bin conf shares mail log
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【main.sh】 [mon.conf] [load.sh 502.sh] [mail.py mail.sh] [mon.log err.log]
bin 主程序
conf 配置文件
shares各个监控脚本
mail邮件引擎
log 日志

main.sh
#!/bin/bash
#Written by aming.

是否发送邮件的开关

export send=1

过滤ip地址

export addr=/sbin/ifconfig |grep -A1 "enp0s3: " |grep 'inet' |awk '{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

load.sh

#! /bin/bash
##Writen by aming##
load=uptime |awk -F 'average:' '{print $2}'|cut -d',' -f1|sed 's/ //g' |cut -d. -f1
if [ $load -gt 10 ] && [ KaTeX parse error: Expected 'EOF', got '#' at position 16: send -eq "1" ] #̲系统负载大于10，并且send…addr date +%T load is $load">../log/load.tmp/bin/bash../mail/mail.shlij@fusen.net.cn"$addr_load:$load" cat ../log/load.tmp
fi
echo "date +%T load is $load"

502.sh

#! /bin/bash
d=date -d "-1 min" +%H:%M
#截取一分钟之前的时间
c_502=grep :$d: $log |grep ' 502 '|wc -l
if [ $c_502 -gt 10 ] && [ $send==1];thenecho"$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"

[root@allen shares]# cat disk.sh
#! /bin/bash
##Writen by aming##
rm -f …/log/disk.tmp
for r in df -h |awk -F '[ %]+' '{print $5}'|grep -v Use
do
if [ $r -gt 90 ] && [ $send-eq"1"]thenecho"$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.sh

log=KaTeX parse error: Expected 'EOF', got '#' at position 18: …t_s=`date +%s` #̲定义当前时间时间戳 t_s2=…log ]
then
echo $t_{s}2>/tmp/$log
fi
t_s2=tail -1 /tmp/$log|awk '{print $1}'
echo $t_s>>/tmp/$log
v=$[$t_s-$t_s2]
echo $v
if [ KaTeX parse error: Expected 'EOF', got '#' at position 14: v -gt 3600 ] #̲v 大于一个小时
then
./mail.py $1 $2 $3echo"0">/tmp/$log.txt
else
if [ ! -f /tmp/KaTeX parse error: Expected 'EOF', got '#' at position 13: log.txt ] #̲如果log.txt文件不存在 …log.txt
#创建log.txt文件
fi
nu=cat /tmp/$log.txt
nu2=$[$nu+1]
echo $nu2>/tmp/$log.txt
if [ $nu2 -gt 10 ]
#大于10.发送邮件
then
./mail.py $1 “trouble continue 10 min $2” "$3"echo"0">/tmp/$log.txt
fi
fi