監控電腦活著發送 DISCORD 通知

2020-06-27 494 words 3 minutes

Contents

最近 Raspberry Pi 三號機網路常常掛點
雖然之前有找到讓它重新開機的方法
Linux在Wifi使用pppoe連線後，重開機不能連線上網 | 程式狂想筆記
但我沒採用這個方案
畢竟有時候需要確保有哪些程式正在執行
再重開機是比較好的

有問題電腦解決重新連線方法

最近看到Headless raspberryPi with eth0+USB issue Register 0x00000114 - Raspberry Pi Forums
這邊會 ping 自己的路由
失敗會重啟 Interface

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#!/bin/sh

# cron script for checking wlan connectivity
IP_FOR_TEST="192.168.1.1"
PING_COUNT=1

PING="/bin/ping"
IFUP="/sbin/ifup"
IFDOWN="/sbin/ifdown --force"
INTERFACE="eth0"

FFLAG="/opt/check_lan/stuck.fflg"

# ping test
$PING -c $PING_COUNT $IP_FOR_TEST > /dev/null 2> /dev/null
if [ $? -ge 1 ]
then
    logger "$INTERFACE seems to be down, trying to bring it up..."
        if [ -e $FFLAG ]
        then
                logger "$INTERFACE is still down, REBOOT to recover ..."
                rm -f $FFLAG 2>/dev/null
                sudo reboot
        else
                touch $FFLAG
                logger $(sudo $IFDOWN $INTERFACE)
                sleep 10
                logger $(sudo $IFUP $INTERFACE)
        fi
else
#    logger "$INTERFACE is up"
    rm -f $FFLAG 2>/dev/null
fi

但我不想重開機
之後找時間改寫

改成監控紀錄 log

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#!/bin/sh

# cron script for checking wlan connectivity
IP_FOR_TEST="192.168.1.1"
PING_COUNT=1

PING="/bin/ping"
INTERFACE="eth0"

# ping test
$PING -c $PING_COUNT $IP_FOR_TEST > /dev/null 2> /dev/null
if [ $? -ge 1 ]
then
    logger -it check_interface "============================="
    logger -it check_interface "$INTERFACE seems to be down, trying to bring it up..."
    logger -it check_interface "carrier:"
    cat /sys/class/net/eth0/carrier | logger -it check_interface
    logger -it check_interface "operstate:"
    cat /sys/class/net/eth0/operstate | logger -it check_interface
    logger -it check_interface "route -n"
    route -n 2>&1 | logger -it check_interface
    logger -it check_interface "ifconfig:"
    ifconfig 2>&1 | logger -it check_interface
    logger -it check_interface "ping:"
    ping -c4 192.168.1.1 | logger -it check_interface
    ping -c4 8.8.8.8 | logger -it check_interface
    logger -it check_interface "============================="
fi

紀錄 log
linux日志logger命令详解_飘过的春风-CSDN博客_linux logger
Linux 如何將資料寫到 Syslog | Tsung’s Blog
shell - Linux : how to redirect stdout & stderr to logger? - Unix & Linux Stack Exchange

監控電腦活著發送 DISCORD 通知

其他機都非常穩定
別台監控狀態

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#!/bin/bash
PING="/bin/ping"
PING_COUNT=1

IP=(
192.168.1.1
192.168.1.2
192.168.1.3
)
DSCORD_WEBHOOK="https://discordapp.com/api/webhooks/*"

function sendDiscordNotice(){
        local MSG=$2
        # echo $MSG
        local URL=$1
        curl -H "Content-Type: application/json" \
        -X POST \
        -d "{\"username\": \"system\", \"content\": \"${MSG}\"}" $URL
}

#sendDiscordNotice $DSCORD_WEBHOOK "test"
for i in "${IP[@]}"
do
    #echo $i
    MSG="${i} 沒法 PING 到主機，請管理員查詢狀況"
    #echo $MSG
    $PING -c $PING_COUNT $i > /dev/null 2> /dev/null
    if [ $? -ge 1 ]; then
        sendDiscordNotice "${DSCORD_WEBHOOK}" "${MSG}"
    fi
done 