有大神分享了CF自动开启5秒盾 + 验证码脚本，原理就是通过检测系统负载（cpu或load）自动开启cloudflare UAM和challenge质询（验证码）！！
这里分享下宝塔面板下如何用起来，使用的前提是你的域名需要接入cloudflare。
1、简介
项目：https://github.com/jiuqiMax/autouam
2、申请api_key
开搞之前先申请CloudFlare API KEY，登录cf之后，点击右上角的个人资料（My Profile），选择｛API Tokens｝选择｛Global API Key｝
3、申请zone_id
回到后台首页，点击域名管理，在右侧就可以看到Zone ID，如图：
4、代码
脚本代码如下：
#!/bin/bash
#
# Usage:
# screen -dmS autouam &&
# screen -x -S autouam -p 0 -X stuff "bash /root/autouam.sh" &&
# screen -x -S autouam -p 0 -X stuff $'\n'
#
mode="load"
# 两种模式可选，一：cpu 二：load
challenge="1"
# 是否同时开启验证码质询 设为1即开启
keeptime="300"
# ≈开盾最小时间，如60 则开盾60秒内负载降低不会关，60秒后关
interval="0.5"
# 检测间隔时间，默认0.5秒
email="wdnmd@cloudflare.com"
# CloudFlare 账号邮箱
api_key="(´இ皿இ｀)"
# CloudFlare API KEY
zone_id="ಥ_ಥ"
# 区域ID 在域名的概述页面获取
default_security_level="high"
# 默认安全等级 关闭UAM时将会把安全等级调整为它
api_url="https://api.cloudflare.com/client/v4/zones/$zone_id/settings/security_level"
# API的地址
api_url1="https://api.cloudflare.com/client/v4/zones/$zone_id/firewall/access_rules/rules"
# API的地址之二
# 安装依赖
if [ ! $(which jq 2> /dev/null) ]; then
echo "jq not found!"
if [ -f "/usr/bin/yum" ] && [ -d "/etc/yum.reps.d" ]; then
yum install jq -y
elif [ -f "/usr/bin/apt-get" ] && [ -f "/usr/bin/dpkg" ]; then
apt-get install jq -y
fi
fi
for((;;))
do
if [ "$mode" = "cpu" ];
then
check=90 #5秒内CPU连续超过80 则开启UAM【可以根据您的服务器负荷情况调整】
#系统空闲时间
TIME_INTERVAL=5
time=$(date "+%Y-%m-%d %H:%M:%S")
LAST_CPU_INFO=$(cat /proc/stat | grep -w cpu | awk '{print $2,$3,$4,$5,$6,$7,$8}')
LAST_SYS_IDLE=$(echo $LAST_CPU_INFO | awk '{print $4}')
LAST_TOTAL_CPU_T=$(echo $LAST_CPU_INFO | awk '{print $1+$2+$3+$4+$5+$6+$7}')
sleep ${TIME_INTERVAL}
NEXT_CPU_INFO=$(cat /proc/stat | grep -w cpu | awk '{print $2,$3,$4,$5,$6,$7,$8}')
NEXT_SYS_IDLE=$(echo $NEXT_CPU_INFO | awk '{print $4}')
NEXT_TOTAL_CPU_T=$(echo $NEXT_CPU_INFO | awk '{print $1+$2+$3+$4+$5+$6+$7}')
#系统空闲时间
SYSTEM_IDLE=`echo ${NEXT_SYS_IDLE} ${LAST_SYS_IDLE} | awk '{print $1-$2}'`
#CPU总时间
TOTAL_TIME=`echo ${NEXT_TOTAL_CPU_T} ${LAST_TOTAL_CPU_T} | awk '{print $1-$2}'`
load=`echo ${SYSTEM_IDLE} ${TOTAL_TIME} | awk '{printf "%.2f", 100-$1/$2*100}'`
else
load=$(cat /proc/loadavg | colrm 5)
check=$(cat /proc/cpuinfo | grep "processor" | wc -l)
fi
if [ ! -f "status.txt" ];then
echo "" > status.txt
else
status=$(cat status.txt)
fi
now=$(date +%s)
time=$(date +%s -r status.txt)
echo "当前$mode负载:$load"
if [[ $status -eq 1 ]]
then
echo "UAM ON!"
else
echo "UAM OFF!"
fi
newtime=`expr $now - $time`
closetime=`expr $keeptime - $newtime`
if [[ $load <$check ]]&&[[ $status -eq 1 ]]&&[[ $newtime -gt $keeptime ]]
then
echo -e "\n$mode负载低于$check，当前已开盾超过规定时间$newtime秒，尝试调整至默认安全等级（$default_security_level）"
# Disable Under Attack Mode
result=$(curl -X PATCH "$api_url" \
-H "X-Auth-Email: $email" \
-H "X-Auth-Key: $api_key" \
-H "Content-Type: application/json" \
--data "{
\"value\": \"$default_security_level\"
}" --silent \
| jq -r '.success')
if [ "$result" = "true" ]; then
echo 0 > status.txt
echo -e "\n成功"
fi
if [ "$challenge" -eq 1 ]; then
rulesid=$(curl -X GET "$api_url1?per_page=1000&mode=challenge&configuration.target=country" \
-H "X-Auth-Email: $email" \
-H "X-Auth-Key: $api_key" \
-H "Content-Type: application/json" \
--silent \
| jq -r '.result[].id')
for i in $rulesid
do
result=$(curl -X DELETE "$api_url1/$i" \
-H "X-Auth-Email: $email" \
-H "X-Auth-Key: $api_key" \
-H "Content-Type: application/json" \
--data "{
\"cascade\": \"none\"
}" --silent \
| jq -r '.success')
if [ "$result" = "true" ]; then
echo -e "\n删除验证码 成功 ID: $i"
fi
done
fi
elif [[ $load <$check ]]
then
echo -e "\n$mode负载低于$check，不做任何改变，状态持续了$newtime秒"
if [[ $status -eq 1 ]]
then
echo -e "将于$closetime秒后调整安全等级至$default_security_level"
fi
elif [[ $load >$check ]] && [[ $status -eq 1 ]] && [[ $newtime -gt $keeptime ]]
then
echo -e "\n$mode负载高于$check，当前已开启UAM超过$keeptime秒，UAM无效"
elif [[ $load >$check ]] && [[ $status -eq 1 ]]
then
echo -e "\n$mode负载高于$check，当前已开启($newtime秒)，请再观察"
elif [[ $load >$check ]]
then
echo -e "\n$mode负载高于$check，开启UAM"
# Enable Under Attack Mode
result=$(curl -X PATCH "$api_url" \
-H "X-Auth-Email: $email" \
-H "X-Auth-Key: $api_key" \
-H "Content-Type: application/json" \
--data "{
\"value\": \"under_attack\"
}" --silent \
| jq -r '.success')
if [ "$result" = "true" ]; then
echo 1 > status.txt
echo -e "\n成功"
fi
if [ "$challenge" -eq 1 ]; then
for i in AF AX AL DZ AS AD AO AI AQ AG AR AM AW AU AT AZ BS BH BD BB BY BE BZ BJ BM BT BO BQ BA BW BV BR IO BN BG BF BI KH CM CA CV KY CF TD CL CN CX CC CO KM CG CD CK CR CI HR CU CW CY CZ DK DJ DM DO EC EG SV GQ ER EE ET FK FO FJ FI FR GF PF TF GA GM GE DE GH GI GR GL GD GP GU GT GG GN GW GY HT HM VA HN HK HU IS IN ID IR IQ IE IM IL IT JM JP JE JO KZ KE KI KP KR KW KG LA LV LB LS LR LY LI LT LU MO MK MG MW MY MV ML MT MH MQ MR MU YT MX FM MD MC MN ME MS MA MZ MM NA NR NP NL NC NZ NI NE NG NU NF MP NO OM PK PW PS PA PG PY PE PH PN PL PT PR QA RE RO RU RW BL SH KN LC MF PM VC WS SM ST SA SN RS SC SL SG SX SK SI SB SO ZA GS SS ES LK SD SR SJ SZ SE CH SY TW TJ TZ TH TL TG TK TO TT TN TR TM TC TV UG UA AE GB UM UY UZ VU VE VN VG VI WF EH YE ZM ZW XX T1
do
result=$(curl -X POST "$api_url1" \
-H "X-Auth-Email: $email" \
-H "X-Auth-Key: $api_key" \
-H "Content-Type: application/json" \
--data "{
\"mode\": \"challenge\",
\"configuration\": {
\"target\": \"country\",
\"value\": \"$i\"
}
}" --silent \
| jq -r '.success')
if [ "$result" = "true" ]; then
echo -e "\n开启对$i国家的验证码 成功"
fi
done
fi
else
echo 0 > status.txt
fi
sleep $interval
clear
done
注意：该修改的地方，要修改。
5、计划任务
宝塔面板的计划任务中新建一个任务，如图：
保存之后，可以试着执行下看看效果：
6、最后
如果你的站点被攻击频繁，可以试着把执行周期改成每天，或者每小时啥的，这个自行调整。如果有更新，请自行进入项目获取最新脚本。
注意！默认challenge=1，将在开启UAM的同时开启验证码。如果你不想，请将它设为0