diff --git a/_build/_cmsg_monitorfix.txt b/_build/_cmsg_monitorfix.txt new file mode 100644 index 0000000..c2ae6e9 --- /dev/null +++ b/_build/_cmsg_monitorfix.txt @@ -0,0 +1,30 @@ +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。 diff --git a/_build/check_lightsail.py b/_build/check_lightsail.py index 1e24498..45c4300 100644 --- a/_build/check_lightsail.py +++ b/_build/check_lightsail.py @@ -1,14 +1,14 @@ # -*- coding: utf-8 -*- r'''看一眼 Lightsail 上中转服务器的完整状态。 -为什么写成文件:用 `python -c @"..."@` 传带 `$(...)` 和引号的远端命令, -PowerShell 会做变量插值、还会在本机执行 `$(systemctl ...)` -(报 "无法将 systemctl 项识别为 cmdlet")。凡是超过两行的远端命令, -一律写成文件跑。 +⚠ 写这个文件的原因:用 `python -c @"..."@` 传带 `$(...)` 的远端命令, +PowerShell 会**先在本机求值** `$(systemctl ...)`(报"无法将 systemctl +项识别为 cmdlet"),还会吃掉引号导致 Python 语法错。 +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。** 用法: python _build/check_lightsail.py - python _build/check_lightsail.py --fix # 顺便修文件属主 + python _build/check_lightsail.py --fix # 顺便修文件属主 ''' from __future__ import annotations @@ -20,52 +20,63 @@ sys.path.insert(0, str(ROOT / "_build")) from lssh import run # noqa: E402 PORT = "13245" -PUBLIC = "http://13.54.30.196:%s" % PORT +DOMAIN = "yk.xxmxxs.top" RELAY_DIR = "/opt/ykxmz-relay" +# 三层地址各查一遍: +# 域名 —— 用户实际走的路(Cloudflare -> nginx -> 中转) +# IP:80 —— 绕过 Cloudflare,直连 nginx(域名没配好时靠它) +# :13245 —— **应该不通**(中转已只绑 127.0.0.1,不再对公网) +DOMAIN_URL = "http://%s" % DOMAIN +NGINX_URL = "http://13.54.30.196:80" +DIRECT_URL = "http://13.54.30.196:%s" % PORT + REMOTE = r''' R=__DIR__ P=__PORT__ + echo "════ 服务 ════" -for s in ykxmz-relay ykxmz-monitor.timer; do - printf ' %-24s %s\n' "$s" "$(systemctl is-active $s 2>&1)" +for s in ykxmz-relay nginx ykxmz-monitor.timer; do + printf ' %-22s %s\n' "$s" "$(systemctl is-active $s 2>&1)" done echo -echo "════ 健康 ════" -printf ' %-24s %s\n' "本机 health" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 8 http://127.0.0.1:$P/v1/health)" -printf ' %-24s %s\n' "公网 health" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 15 __PUBLIC__/v1/health)" -printf ' %-24s %s\n' "公网首页" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 15 __PUBLIC__/)" -printf ' %-24s %s\n' "本机延迟" "$(curl -s -o /dev/null -w '%{time_total}s' --max-time 8 http://127.0.0.1:$P/v1/health)" -printf ' %-24s %s\n' "公网延迟" "$(curl -s -o /dev/null -w '%{time_total}s' --max-time 15 __PUBLIC__/v1/health)" +echo "════ 三层地址(用户路径 / 绕 CF / 直连中转)════" +printf ' %-26s %s\n' "域名 __DOMAIN__" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 12 __DOMAIN_URL__/v1/health)" +printf ' %-26s %s\n' "IP:80(nginx)" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 12 __NGINX_URL__/v1/health)" +printf ' %-26s %s\n' ":__PORT__(应 000)" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 8 __DIRECT_URL__/v1/health)" +printf ' %-26s %s\n' "本机 :__PORT__" "$(curl -s -o /dev/null -w '%{http_code}' --max-time 8 http://127.0.0.1:$P/v1/health)" +printf ' %-26s %s\n' "IP:80 延迟" "$(curl -s -o /dev/null -w '%{time_total}s' --max-time 12 __NGINX_URL__/v1/health)" echo echo "════ 首页角标 ════" -echo " 最新版: $(curl -s --max-time 10 http://127.0.0.1:$P/ | grep -o '最新版 [0-9.]*' | head -1)" +echo " IP:80 -> $(curl -s --max-time 10 __NGINX_URL__/ | grep -o '最新版 [0-9.]*' | head -1)" +echo " 域名 -> $(curl -s --max-time 12 __DOMAIN_URL__/ | grep -o '最新版 [0-9.]*' | head -1)" + +echo +echo "════ 缓存头(决定 Cloudflare 缓不缓存)════" +printf ' %-20s %s 条\n' "下载" "$(curl -sI --max-time 10 __NGINX_URL__/download/ykxmz-setup-2.1.3.exe | grep -ci cache-control)" +curl -sI --max-time 10 __NGINX_URL__/download/ykxmz-setup-2.1.3.exe \ + | grep -i '^cache-control' | sed 's/^/ /' +printf ' %-20s %s\n' "长轮询" "$(curl -sI --max-time 10 __NGINX_URL__/v1/health | grep -i '^cache-control' | tr -d '\r')" echo echo "════ 监听 / 进程 ════" -ss -tlnp 2>/dev/null | grep ":$P " | sed 's/^/ /' -ps -eo pid,rss,etime,cmd --sort=-rss 2>/dev/null | grep 'relay\.py' | grep -v grep | head -2 | sed 's/^/ /' +ss -tlnp 2>/dev/null | grep -E ":(80|$P) " | sed 's/^/ /' +ps -eo pid,rss,etime,cmd --sort=-rss 2>/dev/null | grep 'relay\.py' | grep -v grep | head -1 | sed 's/^/ /' echo echo "════ 监测单元 ════" cat $R/monitor_state.txt 2>/dev/null | sed 's/^/ /' -echo " --- monitor.log 尾部 ---" -tail -4 $R/monitor.log 2>/dev/null | sed 's/^/ /' +echo " --- 探测的是什么地址 ---" +grep -E '^(PUBLIC_URL|FALLBACK_URL)=' $R/monitor.sh | sed 's/^/ /' +echo " --- monitor.log 尾部(只挑非 Permission 的)---" +grep -v 'Permission denied' $R/monitor.log 2>/dev/null | tail -4 | sed 's/^/ /' echo -echo "════ 抢救报告 ════" -echo " 共 $(ls $R/rescue_reports 2>/dev/null | wc -l) 份" -ls -la $R/rescue_reports/ 2>/dev/null | tail -n +4 | awk '{print " " $6" "$7" "$8" "$9}' - -echo -echo "════ 知识库 ════" -if [ -f $R/rescue_knowledge.md ]; then - echo " $(wc -l < $R/rescue_knowledge.md) 行" -else - echo " (还没有)" -fi +echo "════ 抢救报告 / 知识库 ════" +echo " 报告 $(ls $R/rescue_reports 2>/dev/null | wc -l) 份" +echo " 知识库 $(wc -l < $R/rescue_knowledge.md 2>/dev/null || echo 0) 行" echo echo "════ 资源 ════" @@ -74,11 +85,7 @@ df -h / | tail -1 | awk '{printf " 磁盘 %s 用 %s\n", $2, $5}' uptime | sed 's/^/ /' echo -echo "════ 定时器下次触发 ════" -systemctl list-timers ykxmz-monitor.timer --no-pager 2>/dev/null | head -3 | sed 's/^/ /' - -echo -echo "════ 文件属主(admin 要能写日志)════" +echo "════ 文件属主(admin 必须能写日志)════" ls -la $R/*.log $R/monitor_state.txt 2>/dev/null | awk '{print " " $3":"$4" "$9}' ''' @@ -87,12 +94,16 @@ def main() -> int: if "--fix" in sys.argv: print(" ── 修属主 ──") out = run("sudo chown -R admin:admin %s && sudo chmod 755 %s && echo OK" - % (RELAY_DIR, RELAY_DIR), timeout=120) + % (RELAY_DIR, RELAY_DIR), timeout=120, quiet=True) print(" " + out[1].strip()) - cmd = (REMOTE.replace("__DIR__", RELAY_DIR) + cmd = (REMOTE + .replace("__DIR__", RELAY_DIR) .replace("__PORT__", PORT) - .replace("__PUBLIC__", PUBLIC)) + .replace("__DOMAIN__", DOMAIN) + .replace("__DOMAIN_URL__", DOMAIN_URL) + .replace("__NGINX_URL__", NGINX_URL) + .replace("__DIRECT_URL__", DIRECT_URL)) out = run(cmd, timeout=300, quiet=True) print(out[1] if isinstance(out, tuple) else out) return 0 diff --git a/_build/fix_monitor_url.py b/_build/fix_monitor_url.py new file mode 100644 index 0000000..8dc3191 --- /dev/null +++ b/_build/fix_monitor_url.py @@ -0,0 +1,165 @@ +# -*- coding: utf-8 -*- +r'''修监测单元:它现在查错了地址,在**误报网站挂了**。 + +== 怎么发现的 == + +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: + + 公网 health 000 <- 因为 :13245 已经不对公网开了 + fails=2 <- 监测单元连续两次"失败" + +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 —— +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…… +**会陷入无限重启循环**。 + +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 +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: + + http://yk.xxmxxs.top/v1/health (经过 Cloudflare + nginx) + +但域名还没配好(DNS 还没指过来),所以加一个**回退**: +域名不通就用 IP:80 试,只要有一个通就算健康。 + +这样: + * 域名配好之前 -> 走 IP:80,正常监控 + * 域名配好之后 -> 走域名,监控的是用户真实路径 + * 两个都不通 -> 才是真挂了 + +== 顺带 == + +monitor.log 的属主问题:monitor.service 以 admin 跑, +而 relay.log 之类的之前是 root 建的。已经 chown 过一次, +但 monitor.log 是后来新生成的(仍是 root)—— 这次一并修掉, +并且在 unit 里加一行让 systemd 自己保证目录属主。 +''' +from __future__ import annotations + +import sys +from pathlib import Path + +ROOT = Path(__file__).resolve().parent.parent +sys.path.insert(0, str(ROOT / "_build")) +from lssh import run # noqa: E402 + +RELAY_DIR = "/opt/ykxmz-relay" +DOMAIN = "yk.xxmxxs.top" +FALLBACK = "http://13.54.30.196:80" + + +def main() -> int: + print("=" * 62) + print(" 修监测单元:改探测地址 + 修日志属主") + print("=" * 62) + + print() + print(" ── 1. 改 monitor.sh 的健康检查(域名优先,IP 兜底)──") + # 把 PUBLIC_URL 的默认值换掉,并把 is_healthy 改成"两个都试" + old_url = 'PUBLIC_URL="${PUBLIC_URL:-http://13.54.30.196:13245}"' + new_url = ( + '# 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' + 'PUBLIC_URL="${PUBLIC_URL:-http://%s}"\n' + 'FALLBACK_URL="${FALLBACK_URL:-%s}"' % (DOMAIN, FALLBACK)) + + 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())