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xmz7891
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琚帶绔?- 淇 MTU 闂锛氬す MSS + 璺緞 MTU 鎺㈡祴锛堝叕缃戝彲鐢ㄧ巼 48% -> 100%锛?- 澶嶇敤 HTTP 杩炴帴锛堝厤鎺夋瘡娆℃柊寤?TLS 鐨?30% 鎻℃墜澶辫触锛?- 姣忓垎閽熷洖澶存壘灞€鍩熺綉锛岃嚜鍔ㄥ垏鍥炲揩 400 鍊嶇殑璺緞 - 鐢婚潰蹇冭烦甯э細闈欐鏃剁渷娴侀噺锛屽鎴风浠嶇煡閬撴祦鏄椿鐨?- 閿佸睆鏃剁粰鍑哄彲鎿嶄綔鐨勬彁绀? 鎵嬭〃绔?- 鍐呯疆 GTS Root R4 / GlobalSign Root CA锛屼慨 SSLHandshakeException - 杩炴帴閿欒缈昏瘧鎴愪汉璇濓紙璇佷功/鏃堕棿/瑙ｆ瀽/瓒呮椂鍒嗗埆鎻愮ず锛?- 缁忎腑杞繛涓婂悗鐢ㄦ湇鍔″櫒鎶ョ殑鍦板潃鍒锋柊宸查厤瀵硅褰?- 鏂板灞€鍩熺綉杩炴帴椤甸潰銆佹湇鍔″櫒寤惰繜妫€娴? 鏈嶅姟鍣ㄧ - 鏀寔 chunked 璇锋眰浣擄紙淇瘡 16 绉掍竴娆＄殑杩炴帴閿欎贡涓庡ぇ闈㈢Н 502锛?- 缃戠粶璋冧紭鑴氭湰 net-tune.sh锛堝紑鏈鸿嚜鍔ㄥ簲鐢級 - 绠＄悊椤碉細鎵归噺鍒犻櫎銆佺綉缁滀綋妫€銆佷笅杞藉尯 - 闅ч亾鏀?HTTP/2 + 鍙岃繛鎺? 鏂囨。 - 璁稿彲鍗忚 / 瀹夎鍓嶅繀璇?/ 瀹夎鍚庨』鐭ワ紙浣滆€咃細灏忛害瀛愶級
70 lines
2.7 KiB
Bash
70 lines
2.7 KiB
Bash
#!/bin/bash
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# 部署重启之后可用率掉到 76%，查清楚原因。
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#
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# 要排除的可能：
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# 1. MSS 规则被部署脚本清掉了 -> 查规则
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# 2. 隧道重建时没带上 MSS（规则生效于新连接）-> 查隧道建立时间
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# 3. 链路本身在这个时段变差 -> 分组对比测量
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set -u
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RELAY_DIR=/root/lanremote-relay
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URL=https://relay.xxmxxs.top
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echo "===== 1. 调优还在不在 ====="
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echo " tcp_mtu_probing = $(cat /proc/sys/net/ipv4/tcp_mtu_probing)"
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echo " MSS 规则 $(iptables -t mangle -L -n 2>/dev/null | grep -ci mss) 条"
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iptables -t mangle -L -n 2>/dev/null | grep -i mss | sed 's/^/ /'
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echo
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echo "===== 2. 隧道什么时候建的（要比 MSS 规则晚才对）====="
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echo " MSS 规则最早（服务启动时间）："
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systemctl show lanremote-nettune.service -p ActiveEnterTimestamp --value
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echo " 隧道启动时间："
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systemctl show lanremote-tunnel -p ActiveEnterTimestamp --value
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echo " 隧道最近的注册记录："
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grep 'Registered tunnel connection' "$RELAY_DIR/tunnel.log" 2>/dev/null \
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| tail -3 | sed 's/^/ /'
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echo
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echo "===== 3. 服务状态 ====="
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for s in lanremote-nettune.service lanremote-relay lanremote-tunnel; do
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printf " %-28s %s\n" "$s" "$(systemctl is-active "$s")"
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done
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echo " 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}')"
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echo
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echo "===== 4. 分组测量：连续 3 组，每组 20 次 ====="
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for group in 1 2 3; do
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ok=0
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for i in $(seq 1 20); do
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c=$(timeout 12 curl -4 -s -o /dev/null -w '%{http_code}' \
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-H 'User-Agent: LanRemote/1.4.0' "$URL/v1/health" 2>/dev/null)
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[ "$c" = "200" ] && ok=$((ok+1))
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sleep 1
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done
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echo " 第 $group 组: $ok/20 = $((ok * 5))%"
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done
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echo
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echo "===== 5. 路径 MTU 现状（MSS 1400 是否仍然合适）====="
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for size in 1400 1440 1452 1460 1472; do
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out=$(ping -c 3 -W 3 -M do -s "$size" 1.1.1.1 2>&1)
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loss=$(echo "$out" | grep -oE '[0-9]+% packet loss' | head -1)
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rtt=$(echo "$out" | grep -oE 'min/avg/max[^=]*= [0-9./]+' | head -1)
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printf " 包 %-5s 丢包 %-14s %s\n" "$((size + 28))" "${loss:-?}" "${rtt:-}"
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done
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echo
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echo "===== 6. 强制让隧道用上最新参数重建 ====="
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systemctl restart lanremote-tunnel
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sleep 40
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echo " 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}')"
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ok=0
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for i in $(seq 1 20); do
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c=$(timeout 12 curl -4 -s -o /dev/null -w '%{http_code}' \
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-H 'User-Agent: LanRemote/1.4.0' "$URL/v1/health" 2>/dev/null)
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[ "$c" = "200" ] && ok=$((ok+1))
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sleep 1
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done
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echo " 重建后: $ok/20 = $((ok * 5))%"
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