Linux服务器定时健康检查，发生故障自动微信告警

此脚本适用于于各种Linux环境，可以实现各种监控项目，可自定义阀值，实现不同监控效果
已在原有脚本基础上做了简化，提取了主要功能
目前实现的有：
1、磁盘监控
2、内存监控
3、cpu负荷监控
4、进程数监控
5、iptables 状态检查(若防火墙未开启，启动防火墙)
6、多端口检查
其中若一项失败，微信提醒对应失败的监控项

脚本如下所示：

#!/bin/bash

source /etc/profile

Echo_Colour(){ 
        echo -e "[33[$1;1m$233[0m]"
}
Print_Format(){
        printf "|%-12s|%15s|%10s|
" "$1" "$2" "$3"
}
Print_Format2(){
        printf "+%-12s+%15s+%10s+
" "------------" "---------------" "----------"
}
Print_Select(){
        Num1="$1"
        Num2="$2"
        if [ "`echo "$Num1 > $Num2"|bc`" == "1" ];then
                Print_Format "$3" "$4" "$5"
        fi
}
Output_(){ 
        TrueFalse=$1   
        PrintVar=$2
        PrintResult=$3
        if [[ -z $TrueFalse && -n "$PrintVar" ]];then
                PrintVar=`printf "%-45s" "${PrintVar}"`
                echo -n -e "33[32;49;1m[`date +%F %T`]	${PrintVar}33[39;49;0m"
        elif [[ -n $TrueFalse && "$TrueFalse" == "0" ]];then
                Echo_Colour "32" "$PrintResult"
        elif [[ -n $TrueFalse && "$TrueFalse" == "1" ]];then
                Echo_Colour "31" "$PrintResult"
        else
                Echo_Colour "31" "syntax error";exit 1
        fi
}
Output_Select(){ 
        Num1="$1"
        Num2="$2"
        PrintTrue="$3"
        PrintFalse="$4"
        RetrunExit="$5"
        if [ "$Num1" == "$Num2" ];then
                Output_ "0" "" "$PrintTrue"
        else
                Output_ "1" "" "$PrintFalse"
                $RetrunExit 1
        fi
}

weixin(){
#CropID 企业Id 
#Secret 管理组的凭证密钥 
CropID="wx80179d3a3eb67***"
Secret="ZyqFs4qfUiXcz8plHFbhCWkF3JEjj7vASkZjs8YTRqKxq1yAx-U46foyNXNKz2qw"
GURL="https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$CropID&corpsecret=$Secret" 
#AccessToken是企业号的全局唯一票据，调用接口时需携带AccessToken     
Gtoken=$(/usr/bin/curl -s -G $GURL | awk -F" '{print $4}')
PURL="https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=$Gtoken"
Content=`cat $TMP`
curl -l -H "Content-type: application/json" -X POST -d "{"touser":"@all","msgtype":"text","toparty":"1","agentid":"1","text":{"content": "Server Check Monitor:
$Content"}, "safe":"0"}" $PURL &>/tmp/weixin.log
}

server_check(){

        Cpucore="`cat /proc/cpuinfo | grep -c processor`"
        Cpuload="`uptime|awk -F, '{print $(NF-1)}'|tr -d " "`"
        Cpuidle="`vmstat|awk '/[0-9]+/{print $(NF-2)}'`"
        MemTotal="`free -m|awk '/Mem:/{print $2}'`"
        MemUse="`free -m|awk '/-/+/{print $3}'`"
        MemFree="`echo "scale=2;($(($MemTotal-$MemUse))) / $MemTotal*100"|bc|cut -d. -f1`"
        SwapTotal="`free -m|awk '/Swap:/{print $2}'`"
        SwapUse="`free -m|awk '/Swap/{print $3}'`"
        SwapFree="`echo "scale=2;($(($SwapTotal-$SwapUse))) / $SwapTotal*100"|bc|cut -d. -f1`"
        DiskUse1="`df -h|awk '//$/{print $(NF-3)}'`"
        DiskUse1Free="`df -h|awk '//$/{print $(NF-1)}'|tr -d "%"`"
        DiskUse1Free="`echo "scale=2;100 - $DiskUse1Free"|bc`"
        DiskUse2="`df -h|awk '//data$/{print $(NF-3)}'`"
        DiskUse2Free="`df -h|awk '//data$/{print $(NF-1)}'|tr -d "%"`"
        DiskUse2Free="`echo "scale=2;100 - $DiskUse2Free"|bc`"
        eth0Link="`ethtool eth0|awk '/Link/{print $NF}'`"
        eth0Speed="`ethtool eth0|awk '/Speed/{print $NF}'`"
        eth0Duplex="`ethtool eth0|awk '/Duplex/{print $NF}'`"
        eth1Link="`ethtool eth1|awk '/Link/{print $NF}'`"
        eth1Speed="`ethtool eth1|awk '/Speed/{print $NF}'`"
        eth1Duplex="`ethtool eth1|awk '/Duplex/{print $NF}'`"

        if `/sbin/iptables -L -n|grep -q "Chain INPUT (policy DROP)"` ;then
                        Iptables=Yes
                        Iptables_bc=1
        else
                /bin/sh /data/shelltools/web_iptable.sh >>$LogFile 2>&1
        if `/sbin/iptables -L -n|grep -q "Chain INPUT (policy DROP)"`;then
                        Iptables=Yes
                        Iptables_bc=1
                else
                        Iptables=No
                        Iptables_bc=0
                fi
        fi
}

Game_Check(){
        GameOnLineNum=`netstat -ntp|awk '/ESTABLISHED/{print $4}'|grep -P -c ":9200|:9300"`
        GameJavaProNum="`jps |grep -c "Server"`"
        GameTomcatProNum="`jps |grep -c Bootstrap`"
        GameNginxProNum="`ps -ef |grep -v grep|grep -c "nginx: master process"`"
}

Send_Warning(){
        TMP=`mktemp`
        echo "${Site}:${IP} ERROR" >>$TMP 2>&1
        Print_Format2 >>$TMP 2>&1
        Print_Format "Site" "Name" "Warning" >>$TMP 2>&1
        Print_Format2  >>$TMP 2>&1
        Print_Select "$Cpuload" "$Cpucore" "$Site" "CPU Load" "$Cpuload" >>$TMP 2>&1
        Print_Select "20" "$Cpuidle" "$Site" "CPU Idle" "$Cpuidle%" >>$TMP 2>&1
        Print_Select "5" "$MemFree" "$Site" "Mem Idle" "$MemFree%" >>$TMP 2>&1
        Print_Select "10" "$DiskUse1Free" "$Site" "/" "$DiskUse1Free%" >>$TMP 2>&1
        Print_Select "10" "$DiskUse2Free" "$Site" "/data" "$DiskUse2Free%" >>$TMP 2>&1
        Print_Select "4" "$GameJavaProNum" "$Site" "JavaPro" "$GameJavaProNum" >>$TMP 2>&1
        Print_Select "1" "$GameTomcatProNum" "$Site" "TomcatPro" "$GameTomcatProNum" >>$TMP 2>&1
        Print_Select "1" "$GameNginxProNum" "$Site" "NginxPro" "$GameNginxProNum" >>$TMP 2>&1
        Print_Select "1" "$Iptables_bc" "$Site" "iptables" "$Iptables_bc" >>$TMP 2>&1
        nc -nvz -w 2 $IP 80 >>$LogFile 2>&1
        Print_Select "$?" "0" "$Site" "$IP" "Web 80 Port Fail" >>$TMP 2>&1
        nc -nvz -w 2 $IP 22 >>$LogFile 2>&1
        Print_Select "$?" "0" "$Site" "$IP" "SSH 22 Port Fail" >>$TMP 2>&1
        Print_Format2  
        sed -i '/ 2: parse error/d' $TMP 
        if [ `cat $TMP|wc -l` -gt 4 ];then
                cd /tmp/
                weixin                
        fi
        #cat $TMP
        rm -f $TMP
}

main()
{
    LogFile=/root/check.log
    Site=`hostname`
    IP=`ifconfig eth0|grep "inet addr"|awk -F: '{print $2}'|awk '{print $1}'`
    Alarm=`awk -F":" '/alarm/{print $2}' /root/config |sed 's/ //g'`
    server_check >>/dev/null
    Game_Check >>/dev/null
    if [ $Alarm = ON ];then
        Send_Warning
    fi
}

main

#取消微信告警
#echo alarm:OFF > /root/config 

需要微信告警执行：

#echo alarm:ON > /root/config 【此为微信告警开关】

效果图如下(Java进程低于5个、80端口不通，微信告警)：