UDP端口检查告警SHELL脚本（企业微信版机器人版）

脚本准备

• 0Batch_Check.sh
• 1port_check.sh
• 2wechat_bot_alert.sh
• CheckList

CheckList

#支持大/小写
10.1.1.5 Udp 53
127.0.0.1 Tcp 1234


0Batch_Check.sh

#!/bin/sh
while read LineX
do
#echo $LineX
./1port_check.sh $LineX
done < ./CheckList


1port_check.sh

#!/bin/sh
#TCP UDP port check and alert
#useage: port_check.sh IP PROTOCOL PORTinput_IP=$1
input_PROTOCOL=$2
input_PORT=$3#将大小写转成临时小写
tmp_PROTOCOL=`echo ${input_PROTOCOL} | tr '[A-Z]' '[a-z]'`
#echo $tmp_PROTOCOLif [[ "${tmp_PROTOCOL}" == "tcp" ]]; then
abbreviate_PROTOCOL="S"
elif [[ "${tmp_PROTOCOL}" == "udp" ]]; then
abbreviate_PROTOCOL="U"
else
echo "Unknown PROTOCOL" && exit 1
fi/usr/bin/nmap ${input_IP} -s ${abbreviate_PROTOCOL} -p ${input_PORT} |grep "$input_PORT/$tmp_PROTOCOL open" &>/dev/null
if [[ $? == 0 ]]
then
echo "${input_IP} ${tmp_PROTOCOL} Port ${input_PORT} Check OK"
else
#A调用自建告警应用
## ./2wechat_app_alert.py 5 "WarningIP: ${input_IP}" "DES: ${tmp_PROTOCOL} Port ${input_PORT} is DOWN!"
#B调用群机器人
./2wechat_bot_alert.sh "Warning!!! ${input_IP} : ${tmp_PROTOCOL} Port ${input_PORT} is DOWN!"
fi


2wechat_bot_alert.sh

#!/bin/sh
#useage: bot_alert.sh a b c .../usr/bin/curl 'https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=xxxxxxxxxxx' \
-H 'Content-Type: application/json' \
-d '
{
"msgtype": "text",
"text": {
"content": "'$*'",
"mentioned_list":["ZhangSan","LaoLiu"]
}
}'


加到定时任务中

crontab -l

*/10 * * * * cd /data/Script/ && ./0Batch_Check.sh &>/dev/null

参考资料

学了一招：在json格式中引用shell变量的技巧，实际上是把 -d 后面的data分为了三个部分：

'{"msgtype...content": "' 加上 $* 再加上 '","mentioned_...}' 。

感谢博主：https://jaminzhang.github.io/shell/the-problem-of-curl-commit-json-data-include-shell-variables/

企业微信群机器人手册：https://work.weixin.qq.com/api/doc/90000/90136/91770