{"id":208506,"date":"2025-09-29T18:25:24","date_gmt":"2025-09-29T10:25:24","guid":{"rendered":"https:\/\/www.server.hk\/blog\/208506\/"},"modified":"2025-09-29T18:25:25","modified_gmt":"2025-09-29T10:25:25","slug":"%e9%a6%99%e6%b8%afvps%e5%a4%9a%e7%ba%bf%e8%b7%af%e8%b7%af%e7%94%b1%e4%bc%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208506\/","title":{"rendered":"\u9999\u6e2fVPS\u591a\u7ebf\u8def\u8def\u7531\u4f18\u5316\uff1a\u63d0\u5347\u7f51\u7edc\u6548\u7387\u4e0e\u964d\u4f4e\u5ef6\u8fdf\u7684\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"<p>\u5728\u8de8\u5883\u4e1a\u52a1\u4e0e\u5185\u5bb9\u52a0\u901f\u573a\u666f\u4e0b\uff0c\u9009\u62e9\u4f4d\u4e8e\u9999\u6e2f\u7684\u6570\u636e\u8282\u70b9\u5e38\u5e38\u80fd\u5e26\u6765\u66f4\u4f4e\u7684\u5ef6\u8fdf\u4e0e\u66f4\u7a33\u5b9a\u7684\u8fde\u63a5\u4f53\u9a8c\u3002\u5bf9\u4e8e\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\u800c\u8a00\uff0c\u5355\u7eaf\u8d2d\u4e70\u4e00\u53f0\u9999\u6e2fVPS\u53ea\u662f\u5f00\u59cb\uff0c<strong>\u901a\u8fc7\u591a\u7ebf\u8def\u8def\u7531\u4f18\u5316\u5b9e\u73b0\u94fe\u8def\u667a\u80fd\u8c03\u5ea6\u4e0e\u6027\u80fd\u63d0\u5347<\/strong>\u624d\u662f\u53d1\u6325\u4ef7\u503c\u7684\u5173\u952e\u3002\u672c\u6587\u4ece\u539f\u7406\u5230\u5b9e\u64cd\uff0c\u4e3a\u4f60\u63d0\u4f9b\u4e00\u5957\u53ef\u843d\u5730\u7684\u4f18\u5316\u6307\u5357\uff0c\u6db5\u76d6\u7ebf\u8def\u9009\u62e9\u3001\u8def\u7531\u7b56\u7565\u3001Linux \u7f51\u7edc\u8c03\u4f18\u4e0e\u5e38\u89c1\u6d4b\u8bd5\u65b9\u6cd5\uff0c\u5e76\u5728\u5bf9\u6bd4\u4e2d\u63d0\u53ca\u7f8e\u56fdVPS\u3001\u9999\u6e2f\u670d\u52a1\u5668\u4e0e\u7f8e\u56fd\u670d\u52a1\u5668\u7684\u4e0d\u540c\u9002\u7528\u573a\u666f\u3002<\/p>\n<h2>\u539f\u7406\uff1a\u591a\u7ebf\u8def\u8def\u7531\u4e0e\u5ef6\u8fdf\u4f18\u5316\u7684\u6838\u5fc3\u6982\u5ff5<\/h2>\n<p>\u591a\u7ebf\u8def\u8def\u7531\u7684\u57fa\u672c\u601d\u8def\u662f\u901a\u8fc7\u591a\u4e2a\u51fa\u53e3\u6216\u4e92\u8054\u94fe\u8def\uff0c\u5c06\u6d41\u91cf\u6309\u7167\u9884\u8bbe\u7b56\u7565\u5206\u914d\u5230\u4e0d\u540c\u7684\u7269\u7406\/\u903b\u8f91\u8def\u5f84\uff0c\u4ee5\u8fbe\u5230<strong>\u6700\u77ed\u5ef6\u8fdf\u3001\u6700\u9ad8\u53ef\u7528\u6027\u6216\u6700\u4f4e\u4e22\u5305\u7387<\/strong>\u3002\u5e38\u7528\u6280\u672f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>BGP\uff08\u8fb9\u754c\u7f51\u5173\u534f\u8bae\uff09\u4e0e\u7b56\u7565\u8def\u7531<\/strong>\uff1aBGP \u7528\u4e8e\u516c\u7f51\u8def\u7531\u901a\u544a\u4e0e\u591a\u51fa\u53e3\u573a\u666f\uff0c\u901a\u8fc7 AS-path\u3001Local Preference \u7b49\u5c5e\u6027\u5b9e\u73b0\u51fa\u53e3\u4f18\u5148\u7ea7\u63a7\u5236\u3002\u5728\u9999\u6e2fVPS\u7684\u573a\u666f\u4e0b\uff0c\u90e8\u5206\u6258\u7ba1\u5546\u652f\u6301\u9759\u6001\u6216\u865a\u62dfBGP\uff0c\u4f7f\u5f97\u4f60\u80fd\u5bf9\u5916\u7f51\u524d\u7f00\u505a\u66f4\u7075\u6d3b\u7684\u6d41\u91cf\u5f15\u5bfc\u3002<\/li>\n<li><strong>ECMP\uff08\u7b49\u4ef7\u591a\u8def\u5f84\uff09<\/strong>\uff1a\u5728\u6570\u636e\u4e2d\u5fc3\u6216\u8def\u7531\u5668\u652f\u6301\u4e0b\uff0cECMP \u5141\u8bb8\u5bf9\u7b49\u4ef7\u524d\u7f00\u505a\u54c8\u5e0c\u5206\u6d41\uff0c\u9002\u5408\u8d1f\u8f7d\u5747\u8861\u4f46\u5bf9\u5ef6\u8fdf\u654f\u611f\u7684\u573a\u666f\u9700\u8c28\u614e\u4f7f\u7528\u3002<\/li>\n<li><strong>\u7b56\u7565\u8def\u7531\uff08Policy-Based Routing\uff09\u4e0e ip rule\/ip route<\/strong>\uff1a\u5728 VPS \u4e0a\u53ef\u4ee5\u6309\u6e90\u5730\u5740\u3001\u76ee\u7684\u7aef\u53e3\u6216 DSCP \u6807\u7b7e\u5c06\u6d41\u91cf\u9001\u5165\u4e0d\u540c\u7f51\u5173\uff0c\u5b9e\u73b0\u5e94\u7528\u7ea7\u7684\u591a\u7ebf\u8def\u8c03\u5ea6\u3002<\/li>\n<li><strong>SD-WAN\/\u96a7\u9053\u6280\u672f<\/strong>\uff1a\u901a\u8fc7 IPSec\u3001WireGuard\u3001GRE \u6216\u57fa\u4e8e TCP \u7684\u96a7\u9053\uff08\u5982 proxytunnel\uff09\u6784\u5efa\u8986\u76d6\u591a\u7ebf\u8def\u7684\u903b\u8f91\u94fe\u8def\uff0c\u9002\u5408\u5c06\u5404\u5730\u8282\u70b9\u4e32\u8054\u6210\u81ea\u5b9a\u4e49\u7684\u56de\u7a0b\u4f18\u5316\u7f51\u7edc\u3002<\/li>\n<\/ul>\n<h3>\u4e3a\u4ec0\u4e48\u9999\u6e2fVPS \u5728\u8de8\u5883\u8bbf\u95ee\u4e2d\u91cd\u8981<\/h3>\n<p>\u9999\u6e2f\u4f5c\u4e3a\u5168\u7403\u9aa8\u5e72\u4e92\u8054\u70b9\u7684\u67a2\u7ebd\u4f4d\u7f6e\uff0c\u4f7f\u5f97\u5230\u4e2d\u56fd\u5927\u9646\u3001\u53f0\u6e2f\u6fb3\u3001\u65e5\u672c\u4e0e\u4e1c\u5357\u4e9a\u7b49\u5730\u7684\u8def\u5f84\u901a\u5e38\u66f4\u77ed\u3001\u66f4\u7a33\u5b9a\u3002\u4e0e\u4e4b\u76f8\u6bd4\uff0c\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u7f8e\u56fdVPS \u66f4\u9002\u5408\u9762\u5411\u7f8e\u6d32\u7528\u6237\u7684\u670d\u52a1\u3002\u82e5\u4e1a\u52a1\u9762\u5411\u4e9a\u592a\uff0c\u9999\u6e2f\u670d\u52a1\u5668\u5f80\u5f80\u5728\u5ef6\u8fdf\u4e0e\u4e22\u5305\u4e0a\u5360\u4f18\uff0c\u4f46\u4ecd\u9700\u901a\u8fc7\u591a\u7ebf\u8def\u8def\u7531\u8fdb\u4e00\u6b65\u628a\u63a7\u94fe\u8def\u8d28\u91cf\u3002<\/p>\n<h2>\u5e94\u7528\u573a\u666f\uff1a\u4f55\u65f6\u9700\u8981\u505a\u591a\u7ebf\u8def\u8def\u7531\u4f18\u5316<\/h2>\n<ul>\n<li>\u5168\u7403\u6216\u4e9a\u592a\u591a\u5730\u57df\u7528\u6237\u8bbf\u95ee\u7684Web\u670d\u52a1\uff0c\u9700\u8981\u964d\u4f4e\u9996\u5305\u65f6\u95f4\u4e0e\u7a33\u5b9a\u6027\uff1b<\/li>\n<li>\u5b9e\u65f6\u5e94\u7528\uff08VoIP\u3001\u76f4\u64ad\u3001\u5728\u7ebf\u6e38\u620f\uff09\u5bf9\u7aef\u5230\u7aef\u5ef6\u8fdf\u548c\u6296\u52a8\u654f\u611f\uff1b<\/li>\n<li>\u8de8\u5883 API \u8c03\u7528\u6216\u6570\u636e\u5e93\u540c\u6b65\uff0c\u9700\u4fdd\u8bc1\u9ad8\u53ef\u7528\u56de\u7a0b\uff1b<\/li>\n<li>\u9700\u8981\u6d41\u91cf\u5206\u79bb\uff08\u4f8b\u5982\u91d1\u878d\u4ea4\u6613\u8d70\u4e13\u7ebf\u3001\u9759\u6001\u5185\u5bb9\u8d70 CDN\uff09\u4ee5\u6ee1\u8db3\u5408\u89c4\u6216\u6027\u80fd\u8981\u6c42\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\u64cd\u4f5c\uff1a\u5728\u9999\u6e2fVPS \u4e0a\u6784\u5efa\u4e0e\u8c03\u4f18\u591a\u7ebf\u8def\u8def\u7531<\/h2>\n<h3>1. \u521d\u6b65\u94fe\u8def\u4e0e\u6027\u80fd\u68c0\u6d4b<\/h3>\n<ul>\n<li>\u4f7f\u7528 mtr \u6216 traceroute \u68c0\u67e5\u4ece\u9999\u6e2fVPS \u5230\u76ee\u6807\u8282\u70b9\u7684\u9010\u8df3\u5ef6\u8fdf\u4e0e\u4e22\u5305\uff0c\u8bc6\u522b\u56de\u7a0b\u74f6\u9888\u3002<\/li>\n<li>\u7528 iperf3 \u6216 nuttcp \u505a\u5e26\u5bbd\u4e0e\u6296\u52a8\u6d4b\u8bd5\uff0c\u5206\u522b\u5728\u4e0d\u540c\u65f6\u95f4\u7a97\u53e3\u91c7\u6837\u4ee5\u8bc4\u4f30\u94fe\u8def\u7a33\u5b9a\u6027\u3002<\/li>\n<li>\u7ed3\u5408 BGP Looking Glass \u6216\u7b2c\u4e09\u65b9\u8def\u6d4b\uff08RIPE Atlas\uff09\u9a8c\u8bc1\u5168\u7403\u8def\u5f84\u5dee\u5f02\uff0c\u5224\u65ad\u662f\u5426\u9700\u8981\u591a\u51fa\u53e3\u6216\u8d70\u4e13\u7ebf\u3002<\/li>\n<\/ul>\n<h3>2. \u5728 Linux \u4e0a\u5b9e\u73b0\u591a\u7ebf\u8def\u51fa\u53e3<\/h3>\n<ul>\n<li>\u914d\u7f6e\u591a\u4e2a\u9ed8\u8ba4\u8def\u7531\u4e0e\u8def\u7531\u8868\uff1a\u7f16\u8f91 \/etc\/iproute2\/rt_tables\uff0c\u6dfb\u52a0\u81ea\u5b9a\u4e49\u8868\u5e76\u5229\u7528 ip rule \u5c06\u7279\u5b9a\u6d41\u91cf\u8def\u7531\u5230\u76f8\u5e94\u7f51\u5173\u3002\u4f8b\u5982\uff0c\u53ef\u6839\u636e\u6e90 IP\u3001\u76ee\u7684\u7aef\u53e3\u6216 DSCP \u503c\u5206\u914d\u4e0d\u540c\u8def\u7531\u8868\u3002<\/li>\n<li>\u793a\u4f8b\u547d\u4ee4\uff08\u793a\u610f\uff09\uff1a<\/li>\n<\/ul>\n<p><strong>\u6dfb\u52a0\u8def\u7531\u8868\u4e0e\u7b56\u7565\uff1a<\/strong><\/p>\n<p>ip route add default via 203.0.113.1 table 101<br \/>\nip route add default via 203.0.113.2 table 102<br \/>\nip rule add from 10.0.0.0\/24 table 101 priority 100<br \/>\nip rule add fwmark 0x1 table 102<\/p>\n<ul>\n<li>\u7ed3\u5408 iptables\/nftables \u7ed9\u7279\u5b9a\u5e94\u7528\u6216\u4f1a\u8bdd\u6253\u6807\uff08mark\uff09\uff0c\u518d\u901a\u8fc7 ip rule \u5c06\u6253\u6807\u6d41\u91cf\u9001\u5165\u6307\u5b9a\u51fa\u53e3\u3002<\/li>\n<li>WireGuard \u6216 IPSec \u96a7\u9053\uff1a\u5f53 VPS \u9700\u8981\u901a\u8fc7\u7b2c\u4e09\u65b9\u51fa\u53e3\uff08\u4f8b\u5982\u4f01\u4e1a\u4e13\u7ebf\u6216\u4e91\u52a0\u901f\u8282\u70b9\uff09\u65f6\uff0c\u5efa\u7acb\u96a7\u9053\u53ef\u4fdd\u8bc1\u8def\u5f84\u53ef\u63a7\u5e76\u964d\u4f4e\u4e22\u5305\u3002<\/li>\n<\/ul>\n<h3>3. \u8def\u7531\u9009\u62e9\u7b56\u7565\u4e0e\u81ea\u52a8\u5316<\/h3>\n<ul>\n<li>\u5efa\u7acb\u5b9a\u671f\u63a2\u6d4b\u811a\u672c\uff1a\u4f7f\u7528 ping\/iperf3 \u63a2\u6d4b\u6bcf\u4e2a\u51fa\u53e3\u7684\u5ef6\u8fdf\u3001\u4e22\u5305\u4e0e\u5e26\u5bbd\uff0c\u6839\u636e\u9608\u503c\u52a8\u6001\u8c03\u6574 ip rule \u6216 BGP localpref\u3002<\/li>\n<li>\u5b9e\u73b0\u8fde\u63a5\u7c98\u6027\uff1a\u5bf9 TCP \u957f\u8fde\u63a5\u6216\u4f1a\u8bdd\u578b\u5e94\u7528\uff0c\u5fc5\u987b\u4fdd\u8bc1\u4f1a\u8bdd\u5728\u4e00\u6761\u7a33\u5b9a\u94fe\u8def\u4e0a\u4ee5\u907f\u514d\u91cd\u8fde\u5e26\u6765\u7684\u5ef6\u8fdf\u4e0e\u6570\u636e\u4e22\u5931\uff0c\u53ef\u7528 IPVS \u6216\u5e94\u7528\u5c42\u4ee3\u7406\u5b9e\u73b0\u4f1a\u8bdd\u4fdd\u6301\u3002<\/li>\n<li>\u8003\u8651 ECMP \u7684\u54c8\u5e0c\u7279\u6027\uff1a\u5982\u679c\u5e94\u7528\u5bf9\u5355\u6761\u8fde\u63a5\u5ef6\u8fdf\u654f\u611f\uff0c\u907f\u514d\u5bf9\u540c\u4e00\u4e94\u5143\u7ec4\u8d70\u591a\u8def\u5f84\u5bfc\u81f4\u91cd\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<h3>4. \u5185\u6838\u4e0e TCP \u5806\u6808\u8c03\u4f18<\/h3>\n<ul>\n<li>\u8c03\u6574 sysctl \u9879\u76ee\u4ee5\u63d0\u5347\u9ad8\u5e76\u53d1\u4e0e\u957f\u5ef6\u8fdf\u94fe\u8def\u4e0b\u7684\u541e\u5410\uff1a<\/li>\n<\/ul>\n<p><strong>\u5e38\u7528 sysctl \u793a\u4f8b\uff1a<\/strong><\/p>\n<p>net.core.default_qdisc = fq<br \/>\nnet.ipv4.tcp_congestion_control = bbr\uff08\u6216 cubic\uff0c\u89c6\u573a\u666f\uff09<br \/>\nnet.ipv4.tcp_window_scaling = 1<br \/>\nnet.ipv4.tcp_rmem = 4096 87380 6291456<br \/>\nnet.ipv4.tcp_wmem = 4096 16384 6291456<br \/>\nnet.ipv4.tcp_mtu_probing = 1<\/p>\n<ul>\n<li>\u542f\u7528 TCP Fast Open\uff08\u5728\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u90fd\u652f\u6301\u65f6\uff09\u53ef\u4ee5\u51cf\u5c11\u63e1\u624b RTT\uff0c\u964d\u4f4e\u9996\u5305\u5ef6\u8fdf\u3002<\/li>\n<li>\u5bf9 UDP \u5e94\u7528\uff0c\u8c03\u6574 net.core.rmem_max \u4e0e net.core.wmem_max \u4ee5\u652f\u6301\u9ad8\u5e76\u53d1\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1a\u9999\u6e2fVPS \u4e0e \u7f8e\u56fdVPS \/ \u7f8e\u56fd\u670d\u52a1\u5668 \u7684\u7f51\u7edc\u4f53\u9a8c\u5dee\u5f02<\/h2>\n<ul>\n<li><strong>\u5730\u7406\u4e0e\u56de\u7a0b\u4f18\u52bf\uff1a<\/strong>\u9762\u5411\u4e9a\u592a\u7528\u6237\u65f6\uff0c\u9999\u6e2fVPS \u901a\u5e38\u6bd4\u7f8e\u56fd\u670d\u52a1\u5668\u5ef6\u8fdf\u66f4\u4f4e\uff1b\u5982\u679c\u7528\u6237\u96c6\u4e2d\u5728\u7f8e\u6d32\uff0c\u4f7f\u7528\u7f8e\u56fdVPS \u6216\u7f8e\u56fd\u670d\u52a1\u5668 \u66f4\u5408\u9002\u3002<\/li>\n<li><strong>\u591a\u7ebf\u4e92\u8054\u80fd\u529b\uff1a<\/strong>\u9999\u6e2f\u7684\u8fd0\u8425\u5546\u4e92\u8054\u5bc6\u5ea6\u9ad8\uff0c\u6613\u83b7\u5f97\u591a\u8fd0\u8425\u5546\u63a5\u5165\u4e0e BGP \u4f18\u5316\u673a\u4f1a\uff0c\u800c\u5728\u67d0\u4e9b\u7f8e\u56fd\u673a\u623f\u4e5f\u6709\u4e30\u5bcc\u7684\u5e26\u5bbd\u8d44\u6e90\u4e0e\u4e92\u8054\u9009\u62e9\uff0c\u9700\u4f9d\u636e\u4e1a\u52a1\u5730\u57df\u5206\u5e03\u9009\u62e9\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u4e0e\u6210\u672c\uff1a<\/strong>\u7f8e\u56fd\u670d\u52a1\u5668\u5728\u56fd\u9645\u5e26\u5bbd\u4e0e\u6d41\u91cf\u8ba1\u8d39\u4e0a\u6709\u4e0d\u540c\u7684\u5b9a\u4ef7\u7b56\u7565\uff0c\u9999\u6e2fVPS \u5728\u8de8\u5883\u8bbf\u95ee\uff08\u5c24\u5176\u662f\u5927\u9646\u4e92\u8054\uff09\u53ef\u80fd\u5728\u6210\u672c-\u6027\u80fd\u4e0a\u66f4\u5177\u4f18\u52bf\u3002<\/li>\n<\/ul>\n<h2>\u9009\u8d2d\u5efa\u8bae\uff1a\u5982\u4f55\u4e3a\u4e0d\u540c\u4e1a\u52a1\u9009\u62e9\u4e0e\u90e8\u7f72\u9999\u6e2fVPS 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