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_build/install_watchdog2.sh

@@ -0,0 +1,78 @@
+#!/bin/bash
+# 装第二版看门狗：30 秒一轮（原来 5 分钟）。
+set -u
+
+RELAY_DIR=/root/lanremote-relay
+
+echo "===== 1. 装脚本 ====="
+chmod +x "$RELAY_DIR/watchdog.sh"
+echo "  $(ls -la $RELAY_DIR/watchdog.sh | awk '{print $5" 字节"}')"
+
+echo
+echo "===== 2. 服务 ====="
+cat > /etc/systemd/system/lanremote-watchdog.service <<'EOF'
+[Unit]
+Description=LanRemote 隧道看门狗（看连接数，不是看公网）
+After=lanremote-relay.service lanremote-tunnel.service
+
+[Service]
+Type=oneshot
+ExecStart=/bin/bash /root/lanremote-relay/watchdog.sh
+MemoryMax=64M
+StandardOutput=append:/root/lanremote-relay/watchdog.log
+StandardError=append:/root/lanremote-relay/watchdog.log
+EOF
+
+echo
+echo "===== 3. 定时器：30 秒一轮 ====="
+cat > /etc/systemd/system/lanremote-watchdog.timer <<'EOF'
+[Unit]
+Description=每 30 秒检查一次隧道连接数
+
+[Timer]
+OnBootSec=2min
+OnUnitActiveSec=30s
+AccuracySec=5s
+Unit=lanremote-watchdog.service
+
+[Install]
+WantedBy=timers.target
+EOF
+
+systemctl daemon-reload
+systemctl enable lanremote-watchdog.timer >/dev/null 2>&1
+systemctl restart lanremote-watchdog.timer
+echo "  已启用"
+
+echo
+echo "===== 4. 立刻跑一次 ====="
+: > "$RELAY_DIR/watchdog.log"
+systemctl start lanremote-watchdog.service
+sleep 6
+tail -5 "$RELAY_DIR/watchdog.log" 2>/dev/null | sed 's/^/  /' || echo "  （没输出）"
+
+echo
+echo "===== 5. 定时器状态 ====="
+systemctl list-timers lanremote-watchdog.timer --no-pager 2>/dev/null | head -3 | sed 's/^/  /'
+
+echo
+echo "===== 6. 当前连接数 ====="
+echo -n "  ha_connections = "
+curl -s --max-time 5 http://127.0.0.1:20241/metrics 2>/dev/null \
+    | grep '^cloudflared_tunnel_ha_connections' | awk '{print $2}'
+echo -n "  看门狗状态: "
+cat "$RELAY_DIR/watchdog.state" 2>/dev/null | tr '\n' ' '
+echo
+
+echo
+echo "===== 7. 观察 2 分钟，看它有没有乱重启 ====="
+BEFORE=$(systemctl show lanremote-tunnel -p NRestarts | cut -d= -f2)
+sleep 120
+AFTER=$(systemctl show lanremote-tunnel -p NRestarts | cut -d= -f2)
+echo "  这 2 分钟里隧道自动重启次数: $AFTER（之前 $BEFORE）"
+echo "  看门狗日志尾部:"
+tail -6 "$RELAY_DIR/watchdog.log" 2>/dev/null | sed 's/^/    /'
+echo
+echo -n "  当前连接数: "
+curl -s --max-time 5 http://127.0.0.1:20241/metrics 2>/dev/null \
+    | grep '^cloudflared_tunnel_ha_connections' | awk '{print $2}'