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修监测单元查错地址（改监听后它开始误报网站挂了）
把中转改成只监听 127.0.0.1（公网走 nginx）之后，监测单元还在查 http://13.54.30.196:13245/v1/health —— 那个端口已经不对公网开了， 于是它连续报"公网异常"，fails 涨到 2。 **差一点就是无限重启循环**：再失败一次它会启动紧急预案， 而预案的动作是"重启中转服务"，重启完再查还是 000，再救…… 这是改监听地址时没想到的连带影响。教训写在这里： **改一个服务的暴露方式时，必须把所有"探测它"的地方一起看一遍。** == 改法 == 监测地址改成"用户实际怎么访问"为准，域名优先、IP 兜底： PUBLIC_URL=http://yk.xxmxxs.top 域名（经 Cloudflare + nginx） FALLBACK_URL=http://13.54.30.196:80 绕过 CF 直连 nginx 只要有一个通就算健康。这样域名配好前靠兜底、配好后走真实路径。 == 顺带修的 == * monitor.log 属主还是 root（后来新建的），admin 写不进去 -> 再 chown 一次 * _build/check_lightsail.py 里的"公网"地址也要跟着改， 并且**故意保留**一项查 :13245（预期 000）用来确认 中转确实不再暴露公网 全量状态：三层地址、缓存头、监测、属主全部正确。
This commit is contained in:
xmz7891
@@ -0,0 +1,30 @@
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修监测单元查错地址（改监听后它开始误报网站挂了）
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把中转改成只监听 127.0.0.1（公网走 nginx）之后，监测单元还在查
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http://13.54.30.196:13245/v1/health —— 那个端口已经不对公网开了，
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于是它连续报"公网异常"，fails 涨到 2。
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**差一点就是无限重启循环**：再失败一次它会启动紧急预案，
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而预案的动作是"重启中转服务"，重启完再查还是 000，再救……
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这是改监听地址时没想到的连带影响。教训写在这里：
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**改一个服务的暴露方式时，必须把所有"探测它"的地方一起看一遍。**
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== 改法 ==
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监测地址改成"用户实际怎么访问"为准，域名优先、IP 兜底：
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PUBLIC_URL=http://yk.xxmxxs.top 域名（经 Cloudflare + nginx）
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FALLBACK_URL=http://13.54.30.196:80 绕过 CF 直连 nginx
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只要有一个通就算健康。这样域名配好前靠兜底、配好后走真实路径。
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== 顺带修的 ==
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* monitor.log 属主还是 root（后来新建的），admin 写不进去
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-> 再 chown 一次
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* _build/check_lightsail.py 里的"公网"地址也要跟着改，
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并且**故意保留**一项查 :13245（预期 000）用来确认
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中转确实不再暴露公网
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全量状态：三层地址、缓存头、监测、属主全部正确。
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+49
-38
@@ -1,14 +1,14 @@
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# -*- coding: utf-8 -*-
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# -*- coding: utf-8 -*-
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r'''看一眼 Lightsail 上中转服务器的完整状态。
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r'''看一眼 Lightsail 上中转服务器的完整状态。
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为什么写成文件：用 `python -c @"..."@` 传带 `$(...)` 和引号的远端命令，
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⚠ 写这个文件的原因：用 `python -c @"..."@` 传带 `$(...)` 的远端命令，
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PowerShell 会做变量插值、还会在本机执行 `$(systemctl ...)`
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PowerShell 会**先在本机求值** `$(systemctl ...)`（报"无法将 systemctl
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（报 "无法将 systemctl 项识别为 cmdlet"）。凡是超过两行的远端命令，
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项识别为 cmdlet"），还会吃掉引号导致 Python 语法错。
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一律写成文件跑。
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这个毛病我这一轮犯了四五次 —— **凡是超过两行的远端命令，一律写文件。**
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用法：
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用法：
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python _build/check_lightsail.py
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python _build/check_lightsail.py
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python _build/check_lightsail.py --fix # 顺便修文件属主
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python _build/check_lightsail.py --fix # 顺便修文件属主
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'''
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'''
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from __future__ import annotations
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from __future__ import annotations
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@@ -20,52 +20,63 @@ sys.path.insert(0, str(ROOT / "_build"))
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from lssh import run # noqa: E402
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from lssh import run # noqa: E402
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PORT = "13245"
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PORT = "13245"
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PUBLIC = "http://13.54.30.196:%s" % PORT
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DOMAIN = "yk.xxmxxs.top"
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RELAY_DIR = "/opt/ykxmz-relay"
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RELAY_DIR = "/opt/ykxmz-relay"
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# 三层地址各查一遍：
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# 域名 —— 用户实际走的路（Cloudflare -> nginx -> 中转）
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# IP:80 —— 绕过 Cloudflare，直连 nginx（域名没配好时靠它）
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# :13245 —— **应该不通**（中转已只绑 127.0.0.1，不再对公网）
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DOMAIN_URL = "http://%s" % DOMAIN
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NGINX_URL = "http://13.54.30.196:80"
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DIRECT_URL = "http://13.54.30.196:%s" % PORT
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REMOTE = r'''
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REMOTE = r'''
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R=__DIR__
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R=__DIR__
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P=__PORT__
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P=__PORT__
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echo "════ 服务 ════"
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echo "════ 服务 ════"
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for s in ykxmz-relay ykxmz-monitor.timer; do
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for s in ykxmz-relay nginx ykxmz-monitor.timer; do
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printf ' %-24s %s\n' "$s" "$(systemctl is-active $s 2>&1)"
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printf ' %-22s %s\n' "$s" "$(systemctl is-active $s 2>&1)"
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done
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done
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echo
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echo
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echo "════ 健康 ════"
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echo "════ 三层地址（用户路径 / 绕 CF / 直连中转）════"
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printf ' %-24s %s\n' "本机 health" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 8 http://127.0.0.1:$P/v1/health)"
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printf ' %-26s %s\n' "域名 __DOMAIN__" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 12 __DOMAIN_URL__/v1/health)"
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printf ' %-24s %s\n' "公网 health" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 15 __PUBLIC__/v1/health)"
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printf ' %-26s %s\n' "IP:80（nginx）" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 12 __NGINX_URL__/v1/health)"
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printf ' %-24s %s\n' "公网首页" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 15 __PUBLIC__/)"
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printf ' %-26s %s\n' ":__PORT__（应 000）" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 8 __DIRECT_URL__/v1/health)"
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printf ' %-24s %s\n' "本机延迟" "$(curl -s -o /dev/null -w '%{time_total}s' --max-time 8 http://127.0.0.1:$P/v1/health)"
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printf ' %-26s %s\n' "本机 :__PORT__" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 8 http://127.0.0.1:$P/v1/health)"
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printf ' %-24s %s\n' "公网延迟" "$(curl -s -o /dev/null -w '%{time_total}s' --max-time 15 __PUBLIC__/v1/health)"
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printf ' %-26s %s\n' "IP:80 延迟" "$(curl -s -o /dev/null -w '%{time_total}s' --max-time 12 __NGINX_URL__/v1/health)"
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echo
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echo
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echo "════ 首页角标 ════"
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echo "════ 首页角标 ════"
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echo " 最新版: $(curl -s --max-time 10 http://127.0.0.1:$P/ | grep -o '最新版 [0-9.]*' | head -1)"
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echo " IP:80 -> $(curl -s --max-time 10 __NGINX_URL__/ | grep -o '最新版 [0-9.]*' | head -1)"
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echo " 域名 -> $(curl -s --max-time 12 __DOMAIN_URL__/ | grep -o '最新版 [0-9.]*' | head -1)"
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echo
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echo "════ 缓存头（决定 Cloudflare 缓不缓存）════"
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printf ' %-20s %s 条\n' "下载" "$(curl -sI --max-time 10 __NGINX_URL__/download/ykxmz-setup-2.1.3.exe | grep -ci cache-control)"
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curl -sI --max-time 10 __NGINX_URL__/download/ykxmz-setup-2.1.3.exe \
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| grep -i '^cache-control' | sed 's/^/ /'
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printf ' %-20s %s\n' "长轮询" "$(curl -sI --max-time 10 __NGINX_URL__/v1/health | grep -i '^cache-control' | tr -d '\r')"
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echo
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echo
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echo "════ 监听 / 进程 ════"
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echo "════ 监听 / 进程 ════"
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ss -tlnp 2>/dev/null | grep ":$P " | sed 's/^/ /'
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ss -tlnp 2>/dev/null | grep -E ":(80|$P) " | sed 's/^/ /'
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ps -eo pid,rss,etime,cmd --sort=-rss 2>/dev/null | grep 'relay\.py' | grep -v grep | head -2 | sed 's/^/ /'
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ps -eo pid,rss,etime,cmd --sort=-rss 2>/dev/null | grep 'relay\.py' | grep -v grep | head -1 | sed 's/^/ /'
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echo
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echo
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echo "════ 监测单元 ════"
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echo "════ 监测单元 ════"
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cat $R/monitor_state.txt 2>/dev/null | sed 's/^/ /'
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cat $R/monitor_state.txt 2>/dev/null | sed 's/^/ /'
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echo " --- monitor.log 尾部 ---"
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echo " --- 探测的是什么地址 ---"
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tail -4 $R/monitor.log 2>/dev/null | sed 's/^/ /'
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grep -E '^(PUBLIC_URL|FALLBACK_URL)=' $R/monitor.sh | sed 's/^/ /'
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echo " --- monitor.log 尾部（只挑非 Permission 的）---"
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grep -v 'Permission denied' $R/monitor.log 2>/dev/null | tail -4 | sed 's/^/ /'
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echo
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echo
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echo "════ 抢救报告 ════"
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echo "════ 抢救报告 / 知识库 ════"
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echo " 共 $(ls $R/rescue_reports 2>/dev/null | wc -l) 份"
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echo " 报告 $(ls $R/rescue_reports 2>/dev/null | wc -l) 份"
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ls -la $R/rescue_reports/ 2>/dev/null | tail -n +4 | awk '{print " " $6" "$7" "$8" "$9}'
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echo " 知识库 $(wc -l < $R/rescue_knowledge.md 2>/dev/null || echo 0) 行"
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echo
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echo "════ 知识库 ════"
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if [ -f $R/rescue_knowledge.md ]; then
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echo " $(wc -l < $R/rescue_knowledge.md) 行"
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else
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echo " （还没有）"
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fi
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echo
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echo
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echo "════ 资源 ════"
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echo "════ 资源 ════"
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@@ -74,11 +85,7 @@ df -h / | tail -1 | awk '{printf " 磁盘 %s 用 %s\n", $2, $5}'
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uptime | sed 's/^/ /'
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uptime | sed 's/^/ /'
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echo
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echo
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echo "════ 定时器下次触发 ════"
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echo "════ 文件属主（admin 必须能写日志）════"
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systemctl list-timers ykxmz-monitor.timer --no-pager 2>/dev/null | head -3 | sed 's/^/ /'
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echo
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echo "════ 文件属主（admin 要能写日志）════"
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ls -la $R/*.log $R/monitor_state.txt 2>/dev/null | awk '{print " " $3":"$4" "$9}'
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ls -la $R/*.log $R/monitor_state.txt 2>/dev/null | awk '{print " " $3":"$4" "$9}'
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'''
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'''
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@@ -87,12 +94,16 @@ def main() -> int:
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if "--fix" in sys.argv:
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if "--fix" in sys.argv:
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print(" ── 修属主 ──")
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print(" ── 修属主 ──")
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out = run("sudo chown -R admin:admin %s && sudo chmod 755 %s && echo OK"
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out = run("sudo chown -R admin:admin %s && sudo chmod 755 %s && echo OK"
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% (RELAY_DIR, RELAY_DIR), timeout=120)
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% (RELAY_DIR, RELAY_DIR), timeout=120, quiet=True)
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print(" " + out[1].strip())
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print(" " + out[1].strip())
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cmd = (REMOTE.replace("__DIR__", RELAY_DIR)
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cmd = (REMOTE
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.replace("__DIR__", RELAY_DIR)
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.replace("__PORT__", PORT)
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.replace("__PORT__", PORT)
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.replace("__PUBLIC__", PUBLIC))
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.replace("__DOMAIN__", DOMAIN)
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.replace("__DOMAIN_URL__", DOMAIN_URL)
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.replace("__NGINX_URL__", NGINX_URL)
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.replace("__DIRECT_URL__", DIRECT_URL))
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out = run(cmd, timeout=300, quiet=True)
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out = run(cmd, timeout=300, quiet=True)
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print(out[1] if isinstance(out, tuple) else out)
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print(out[1] if isinstance(out, tuple) else out)
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return 0
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return 0
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@@ -0,0 +1,165 @@
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# -*- coding: utf-8 -*-
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r'''修监测单元：它现在查错了地址，在**误报网站挂了**。
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== 怎么发现的 ==
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把中转改成只监听 127.0.0.1（公网只能走 nginx）之后，跑状态检查看到：
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公网 health 000 <- 因为 :13245 已经不对公网开了
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fails=2 <- 监测单元连续两次"失败"
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也就是说监测单元**误以为网站挂了**，再失败一次就会启动紧急预案 ——
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而它抢救的方式是"重启中转服务"，重启完它再查还是 000，再救……
|
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**会陷入无限重启循环**。
|
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|
|
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|
这是我自己改监听地址时没想到的连带影响。教训：改一个服务的
|
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|
暴露方式时，必须把所有"探测它"的地方一起看一遍。
|
||||||
|
|
||||||
|
== 改法 ==
|
||||||
|
|
||||||
|
监测的地址应该以"**用户实际怎么访问**"为准，现在应该是：
|
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|
|
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|
http://yk.xxmxxs.top/v1/health （经过 Cloudflare + nginx）
|
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|
|
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|
但域名还没配好（DNS 还没指过来），所以加一个**回退**：
|
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|
域名不通就用 IP:80 试，只要有一个通就算健康。
|
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|
|
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|
这样：
|
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|
* 域名配好之前 -> 走 IP:80，正常监控
|
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* 域名配好之后 -> 走域名，监控的是用户真实路径
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* 两个都不通 -> 才是真挂了
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|
|
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|
== 顺带 ==
|
||||||
|
|
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|
monitor.log 的属主问题：monitor.service 以 admin 跑，
|
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|
而 relay.log 之类的之前是 root 建的。已经 chown 过一次，
|
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|
但 monitor.log 是后来新生成的（仍是 root）—— 这次一并修掉，
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|
并且在 unit 里加一行让 systemd 自己保证目录属主。
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|
'''
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|
from __future__ import annotations
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|
|
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|
import sys
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from pathlib import Path
|
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|
|
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|
ROOT = Path(__file__).resolve().parent.parent
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|
sys.path.insert(0, str(ROOT / "_build"))
|
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from lssh import run # noqa: E402
|
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|
|
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|
RELAY_DIR = "/opt/ykxmz-relay"
|
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|
DOMAIN = "yk.xxmxxs.top"
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|
FALLBACK = "http://13.54.30.196:80"
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|
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|
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|
def main() -> int:
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print("=" * 62)
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print(" 修监测单元：改探测地址 + 修日志属主")
|
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print("=" * 62)
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|
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|
print()
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print(" ── 1. 改 monitor.sh 的健康检查（域名优先，IP 兜底）──")
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|
# 把 PUBLIC_URL 的默认值换掉，并把 is_healthy 改成"两个都试"
|
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|
old_url = 'PUBLIC_URL="${PUBLIC_URL:-http://13.54.30.196:13245}"'
|
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|
new_url = (
|
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|
'# 探测地址：域名优先（用户实际走的路），IP:80 兜底\n'
|
||||||
|
'# （域名 DNS 还没指过来时用它，否则监测会一直误报）\n'
|
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|
'PUBLIC_URL="${PUBLIC_URL:-http://%s}"\n'
|
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|
'FALLBACK_URL="${FALLBACK_URL:-%s}"' % (DOMAIN, FALLBACK))
|
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|
||||||
|
out = run(
|
||||||
|
"grep -n 'PUBLIC_URL=' %s/monitor.sh | head -3" % RELAY_DIR,
|
||||||
|
timeout=60, quiet=True)
|
||||||
|
print(" 改前:")
|
||||||
|
for ln in out[1].strip().splitlines():
|
||||||
|
print(" " + ln)
|
||||||
|
|
||||||
|
script = (
|
||||||
|
"python3 - <<'PYEOF'\n"
|
||||||
|
"from pathlib import Path\n"
|
||||||
|
"p = Path('%s/monitor.sh')\n"
|
||||||
|
"t = p.read_text(encoding='utf-8')\n"
|
||||||
|
"old = [l for l in t.splitlines() if l.startswith('PUBLIC_URL=')]\n"
|
||||||
|
"if not old:\n"
|
||||||
|
" print(' x 找不到 PUBLIC_URL 行')\n"
|
||||||
|
"else:\n"
|
||||||
|
" t = t.replace(old[0], %r, 1)\n"
|
||||||
|
" # 健康检查改成两个都试\n"
|
||||||
|
" a = 'CODE=$(curl -s -o /dev/null -w \\'%%{http_code}\\' --max-time "
|
||||||
|
"\"$CHECK_TIMEOUT\" \\\\\\n \"$PUBLIC_URL/v1/health\" 2>/dev/null)'\n"
|
||||||
|
" b = ('PROBE=\"$PUBLIC_URL\"\\n'\n"
|
||||||
|
" 'CODE=$(curl -s -o /dev/null -w \\'%%{http_code}\\' "
|
||||||
|
"--max-time \"$CHECK_TIMEOUT\" \"$PROBE/v1/health\" 2>/dev/null)\\n'\n"
|
||||||
|
" 'if [ \"$CODE\" != \"200\" ] && [ -n \"$FALLBACK_URL\" ]; then\\n'\n"
|
||||||
|
" ' PROBE=\"$FALLBACK_URL\"\\n'\n"
|
||||||
|
" ' CODE=$(curl -s -o /dev/null -w \\'%%{http_code}\\' "
|
||||||
|
"--max-time \"$CHECK_TIMEOUT\" \"$PROBE/v1/health\" 2>/dev/null)\\n'\n"
|
||||||
|
" 'fi')\n"
|
||||||
|
" if a in t:\n"
|
||||||
|
" t = t.replace(a, b, 1)\n"
|
||||||
|
" print(' ok 健康检查改成域名优先 + IP 兜底')\n"
|
||||||
|
" else:\n"
|
||||||
|
" print(' ! 健康检查那段没匹配上，手工看')\n"
|
||||||
|
" p.write_text(t, encoding='utf-8', newline='\\n')\n"
|
||||||
|
"PYEOF" % (RELAY_DIR, new_url))
|
||||||
|
|
||||||
|
out = run(script, timeout=120, quiet=True)
|
||||||
|
for ln in out[1].strip().splitlines():
|
||||||
|
print(" " + ln)
|
||||||
|
|
||||||
|
out = run("grep -n 'PUBLIC_URL=\\|FALLBACK_URL=\\|PROBE=' %s/monitor.sh "
|
||||||
|
"| head -8" % RELAY_DIR, timeout=60, quiet=True)
|
||||||
|
print(" 改后:")
|
||||||
|
for ln in out[1].strip().splitlines():
|
||||||
|
print(" " + ln)
|
||||||
|
|
||||||
|
print()
|
||||||
|
print(" ── 2. 修日志属主 + 让 systemd 保证它 ──")
|
||||||
|
out = run(
|
||||||
|
"sudo chown -R admin:admin %s && "
|
||||||
|
"sudo sed -i '/^User=admin$/i "
|
||||||
|
"# 日志文件和状态文件都要 admin 能写（服务以 admin 跑）\\n"
|
||||||
|
"# 之前 relay.log / monitor.log 是 root 建的，导致 "
|
||||||
|
"monitor.sh 报 Permission denied\\n"
|
||||||
|
"PermissionsStartOnly=true' "
|
||||||
|
"/etc/systemd/system/ykxmz-monitor.service 2>/dev/null; "
|
||||||
|
"sudo touch %s/monitor.log %s/monitor_state.txt && "
|
||||||
|
"sudo chown admin:admin %s/*.log %s/*.txt %s/*.md 2>/dev/null; "
|
||||||
|
"ls -la %s/*.log | awk '{print \" \" $3\":\"$4\" \" $9}'"
|
||||||
|
% (RELAY_DIR, RELAY_DIR, RELAY_DIR, RELAY_DIR, RELAY_DIR,
|
||||||
|
RELAY_DIR, RELAY_DIR), timeout=180, quiet=True)
|
||||||
|
for ln in out[1].strip().splitlines():
|
||||||
|
print(ln)
|
||||||
|
|
||||||
|
print()
|
||||||
|
print(" ── 3. 重置监测状态 + 跑一次 ──")
|
||||||
|
out = run(
|
||||||
|
"sudo systemctl daemon-reload; "
|
||||||
|
"printf 'fails=0\\nlast_rescue=0\\nlast_code=200\\n' > "
|
||||||
|
"%s/monitor_state.txt; "
|
||||||
|
"bash %s/monitor.sh; echo '--- 状态 ---'; "
|
||||||
|
"cat %s/monitor_state.txt; echo '--- 日志尾 ---'; "
|
||||||
|
"tail -3 %s/monitor.log" % (RELAY_DIR, RELAY_DIR, RELAY_DIR,
|
||||||
|
RELAY_DIR),
|
||||||
|
timeout=180, quiet=True)
|
||||||
|
for ln in out[1].strip().splitlines():
|
||||||
|
print(" " + ln)
|
||||||
|
|
||||||
|
print()
|
||||||
|
print(" ── 4. 验证探测链路 ──")
|
||||||
|
out = run(
|
||||||
|
'printf " %-28s %s\\n" "域名(还没配)" '
|
||||||
|
'"$(curl -s -o /dev/null -w \'%{http_code}\' --max-time 8 '
|
||||||
|
'http://%s/v1/health)"; '
|
||||||
|
'printf " %-28s %s\\n" "IP:80 (兜底)" '
|
||||||
|
'"$(curl -s -o /dev/null -w \'%{http_code}\' --max-time 8 '
|
||||||
|
'http://13.54.30.196:80/v1/health)"; '
|
||||||
|
'printf " %-28s %s\\n" "IP:13245 (已关闭)" '
|
||||||
|
'"$(curl -s -o /dev/null -w \'%{http_code}\' --max-time 8 '
|
||||||
|
'http://13.54.30.196:13245/v1/health)"' % DOMAIN,
|
||||||
|
timeout=120, quiet=True)
|
||||||
|
for ln in out[1].strip().splitlines():
|
||||||
|
print(ln)
|
||||||
|
return 0
|
||||||
|
|
||||||
|
|
||||||
|
if __name__ == "__main__":
|
||||||
|
sys.exit(main())
|
||||||
Reference in New Issue
Block a user