{"id":24930,"date":"2025-09-18T11:55:20","date_gmt":"2025-09-18T03:55:20","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/us-server-statistics-guide-connections-traffic-and-space\/"},"modified":"2025-09-18T11:59:19","modified_gmt":"2025-09-18T03:59:19","slug":"us-server-statistics-guide-connections-traffic-and-space","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/blog\/us-server-statistics-guide-connections-traffic-and-space\/","title":{"rendered":"\u7f8e\u56fd\u670d\u52a1\u5668\u7edf\u8ba1\u6307\u5357\uff1a\u4e86\u89e3\u8fde\u63a5\u3001\u6d41\u91cf\u548c\u7a7a\u95f4"},"content":{"rendered":"<p>\u5728\u5f53\u4eca\u6570\u636e\u9a71\u52a8\u7684<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/us\/cn2\/\" target=\"_blank\">\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528<\/a>\u73af\u5883\u4e2d\uff0c\u7406\u89e3\u670d\u52a1\u5668\u7edf\u8ba1\u4e0d\u4ec5\u4ec5\u662f\u76d1\u63a7\u95ee\u9898\uff0c\u66f4\u662f\u638c\u63e1\u9a71\u52a8\u6027\u80fd\u7684\u6307\u6807\u3002\u65e0\u8bba\u60a8\u662f\u7ba1\u7406\u5355\u4e2a\u5b9e\u4f8b\u8fd8\u662f\u534f\u8c03\u6574\u4e2a\u670d\u52a1\u5668\u673a\u7fa4\uff0c\u638c\u63e1\u8fde\u63a5\u3001<a href=\"https:\/\/www.varidata.com\/zh-cn\/knowledge\/us-server-normal-vs-attack-traffic\/\" target=\"_blank\">\u6d41\u91cf<\/a>\u548c\u7a7a\u95f4\u8ba1\u7b97\u7684\u57fa\u7840\u77e5\u8bc6\u5bf9\u4e8e\u4f18\u5316\u670d\u52a1\u5668\u8fd0\u8425\u81f3\u5173\u91cd\u8981\u3002\u968f\u7740\u6570\u5b57\u670d\u52a1\u548c\u4e91\u8ba1\u7b97\u7684\u6307\u6570\u7ea7\u589e\u957f\uff0c\u8fd9\u4e9b\u6307\u6807\u53d8\u5f97\u8d8a\u6765\u8d8a\u590d\u6742\u548c\u76f8\u4e92\u5173\u8054\u3002<\/p>\n<h2><strong>\u6df1\u5165\u7406\u89e3\u670d\u52a1\u5668\u8fde\u63a5<\/strong><\/h2>\n<p>\u670d\u52a1\u5668\u8fde\u63a5\u6784\u6210\u4e86\u60a8\u7684\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u7684\u4e3b\u5e72\u3002\u4e0e\u5176\u4ed6\u5730\u65b9\u53ef\u80fd\u627e\u5230\u7684\u7b80\u5316\u89e3\u91ca\u4e0d\u540c\uff0c\u8ba9\u6211\u4eec\u6df1\u5165\u63a2\u8ba8\u8fde\u63a5\u6307\u6807\u7684\u6280\u672f\u5c42\u9762\u3002\u7406\u89e3\u8fde\u63a5\u72b6\u6001\u53ca\u5176\u542b\u4e49\u53ef\u4ee5\u5728\u5e73\u7a33\u8fd0\u884c\u7684\u670d\u52a1\u5668\u548c\u7ecf\u5e38\u9047\u5230\u74f6\u9888\u7684\u670d\u52a1\u5668\u4e4b\u95f4\u4ea7\u751f\u5dee\u5f02\u3002<\/p>\n<ul>\n<li>TCP\u8fde\u63a5\u72b6\u6001\n<ul>\n<li>ESTABLISHED\uff1a\u5904\u7406\u6570\u636e\u4f20\u8f93\u7684\u6d3b\u52a8\u8fde\u63a5\uff0c\u9700\u8981\u4ed4\u7ec6\u76d1\u63a7\u8d85\u65f6\u503c\u548c\u4fdd\u6301\u8fde\u63a5\u8bbe\u7f6e<\/li>\n<li>TIME_WAIT\uff1a\u6b63\u5728\u5173\u95ed\u8fc7\u7a0b\u4e2d\u7684\u8fde\u63a5\uff0c\u5bf9\u4e8e\u9632\u6b62\u6570\u636e\u4e22\u5931\u548c\u786e\u4fdd\u6b63\u786e\u7684\u8fde\u63a5\u7ec8\u6b62\u81f3\u5173\u91cd\u8981<\/li>\n<li>LISTEN\uff1a\u7b49\u5f85\u65b0\u8fde\u63a5\u7684\u7aef\u53e3\uff0c\u9700\u8981\u9002\u5f53\u7684\u79ef\u538b\u961f\u5217\u914d\u7f6e<\/li>\n<li>SYN_SENT\uff1a\u5916\u53d1\u8fde\u63a5\u5c1d\u8bd5\uff0c\u5bf9\u4e8e\u8ddf\u8e2a\u5ba2\u6237\u7aef\u53d1\u8d77\u7684\u8fde\u63a5\u5f88\u91cd\u8981<\/li>\n<li>SYN_RECEIVED\uff1a\u4f20\u5165\u8fde\u63a5\u8bf7\u6c42\uff0c\u5bf9\u4e8e\u76d1\u63a7\u6f5c\u5728\u7684SYN\u6d2a\u6c34\u653b\u51fb\u81f3\u5173\u91cd\u8981<\/li>\n<\/ul>\n<\/li>\n<li>\u8fde\u63a5\u8ba1\u7b97\u65b9\u6cd5\n<ul>\n<li>netstat\u547d\u4ee4\u7528\u4e8e\u5b9e\u65f6\u76d1\u63a7\u8be6\u7ec6\u7684TCP\/UDP\u7edf\u8ba1\u4fe1\u606f<\/li>\n<li>ss\u5b9e\u7528\u7a0b\u5e8f\u7528\u4e8e\u8be6\u7ec6\u7684\u5957\u63a5\u5b57\u7edf\u8ba1\uff0c\u652f\u6301\u66f4\u65b0\u7684Linux\u5185\u6838\u529f\u80fd<\/li>\n<li>lsof\u7528\u4e8e\u6587\u4ef6\u63cf\u8ff0\u7b26\u5206\u6790\u548c\u8bc6\u522b\u6f5c\u5728\u7684\u63cf\u8ff0\u7b26\u6cc4\u6f0f<\/li>\n<li>conntrack\u7528\u4e8e\u5728NAT\u73af\u5883\u4e2d\u8ddf\u8e2a\u8fde\u63a5\u72b6\u6001<\/li>\n<li>iptables\u8fde\u63a5\u8ddf\u8e2a\u7528\u4e8e\u9632\u706b\u5899\u7ea7\u522b\u7684\u8fde\u63a5\u76d1\u63a7<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u8981\u8ba1\u7b97\u670d\u52a1\u5668\u7684\u6700\u4f73\u8fde\u63a5\u5bb9\u91cf\uff0c\u8bf7\u4f7f\u7528\u6b64\u516c\u5f0f\uff1a<\/p>\n<p><code>\u6700\u5927\u8fde\u63a5\u6570 = (\u670d\u52a1\u5668RAM * 0.8) \/ (\u5e73\u5747\u8fde\u63a5\u5185\u5b58\u4f7f\u7528\u91cf)<\/code><\/p>\n<p>\u5728\u5fae\u8c03\u8fde\u63a5\u9650\u5236\u65f6\uff0c\u8bf7\u8003\u8651\u4ee5\u4e0b\u9644\u52a0\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li>\u5185\u6838\u53c2\u6570\uff0c\u5982net.core.somaxconn\u548cnet.ipv4.tcp_max_syn_backlog<\/li>\n<li>\u53ef\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08ulimit\u8bbe\u7f6e\uff09<\/li>\n<li>\u5e94\u7528\u7a0b\u5e8f\u7279\u5b9a\u7684\u8fde\u63a5\u6c60\u914d\u7f6e<\/li>\n<\/ul>\n<h2><strong>\u6d41\u91cf\u5206\u6790\u548c\u5e26\u5bbd\u6307\u6807<\/strong><\/h2>\n<p>\u7406\u89e3\u6d41\u91cf\u6a21\u5f0f\u9700\u8981\u7cfb\u7edf\u5316\u7684\u5e26\u5bbd\u6d4b\u91cf\u65b9\u6cd5\u3002\u73b0\u4ee3\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u9700\u8981\u590d\u6742\u7684\u6d41\u91cf\u5206\u6790\u5de5\u5177\u548c\u65b9\u6cd5\u6765\u786e\u4fdd\u6700\u4f73\u8d44\u6e90\u5206\u914d\u548c\u6210\u672c\u7ba1\u7406\u3002<\/p>\n<ol>\n<li>\u5e26\u5bbd\u8ba1\u7b97\uff1a\n<ul>\n<li>\u6708\u6d41\u91cf = \u5e73\u5747\u5e26\u5bbd * 2.1 TB\/Mbps<\/li>\n<li>\u5cf0\u503c\u4f7f\u7528\u91cf = \u6b63\u5e38\u4f7f\u7528\u91cf * 1.5\uff08\u7f13\u51b2\u56e0\u5b50\uff09<\/li>\n<li>\u5b9e\u65f6\u4f7f\u7528\u91cf = \u03a3(\u4f20\u5165\u6570\u636e\u5305 + \u4f20\u51fa\u6570\u636e\u5305) \/ \u65f6\u95f4\u95f4\u9694<\/li>\n<li>\u7a81\u53d1\u5bb9\u91cf = \u5cf0\u503c\u4f7f\u7528\u91cf * 1.2\uff08\u5b89\u5168\u8fb9\u9645\uff09<\/li>\n<li>\u6210\u672c\u4f18\u5316 = \u6d41\u91cf\u6a21\u5f0f\u5206\u6790 + CDN\u5206\u5e03<\/li>\n<\/ul>\n<\/li>\n<li>\u9700\u8981\u76d1\u63a7\u7684\u6d41\u91cf\u7c7b\u578b\uff1a\n<ul>\n<li>HTTP\/HTTPS\u8bf7\u6c42\u53ca\u8be6\u7ec6\u72b6\u6001\u7801\u5206\u6790<\/li>\n<li>\u6570\u636e\u5e93\u67e5\u8be2\uff0c\u5305\u62ec\u67e5\u8be2\u6267\u884c\u65f6\u95f4\u548c\u8fde\u63a5\u6c60<\/li>\n<li>\u6587\u4ef6\u4f20\u8f93\u64cd\u4f5c\u53ca\u5e26\u5bbd\u9650\u5236\u8003\u8651<\/li>\n<li>API\u8c03\u7528\u548c\u54cd\u5e94\u5ef6\u8fdf\u76d1\u63a7<\/li>\n<li>WebSocket\u8fde\u63a5\u548c\u6301\u4e45\u8fde\u63a5\u5f71\u54cd<\/li>\n<li>\u5a92\u4f53\u6d41\u6307\u6807\uff0c\u5305\u62ec\u7f13\u51b2\u7387<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u5b58\u50a8\u7a7a\u95f4\u8ba1\u7b97\uff1a\u6280\u672f\u65b9\u6cd5<\/strong><\/h2>\n<p>\u5728\u8ba1\u7b97\u5b58\u50a8\u9700\u6c42\u65f6\uff0c\u6211\u4eec\u9700\u8981\u8003\u8651\u7b80\u5355\u6587\u4ef6\u5927\u5c0f\u4e4b\u5916\u7684\u591a\u4e2a\u56e0\u7d20\u3002\u73b0\u4ee3\u5b58\u50a8\u89c4\u5212\u5fc5\u987b\u8003\u8651\u5404\u79cd\u7c7b\u578b\u7684\u6570\u636e\u53ca\u5176\u589e\u957f\u6a21\u5f0f\u3002<\/p>\n<ul>\n<li>\u7cfb\u7edf\u5b58\u50a8\u7ec4\u4ef6\uff1a\n<ul>\n<li>\u64cd\u4f5c\u7cfb\u7edf\uff1a20-30GB\u57fa\u672c\u5b89\u88c5\uff0c\u52a0\u4e0a\u5b89\u5168\u66f4\u65b0\u548c\u8865\u4e01<\/li>\n<li>\u4ea4\u6362\u7a7a\u95f4\uff1aRAM<2GB\u7684\u670d\u52a1\u5668\u4e3a2\u500dRAM\uff0c2-8GB\u4e3a1\u500dRAM\uff0c>8GB\u4e3a0.5\u500dRAM<\/li>\n<li>\u7cfb\u7edf\u65e5\u5fd7\uff1a\u6d3b\u8dc3\u670d\u52a1\u5668\u7ea61GB\/\u6708\uff0c\u6839\u636e\u65e5\u5fd7\u7ea7\u522b\u548c\u4fdd\u7559\u7b56\u7565\u800c\u53d8<\/li>\n<li>\u5e94\u7528\u7a0b\u5e8f\u4e8c\u8fdb\u5236\u6587\u4ef6\uff1a\u6839\u636e\u590d\u6742\u7a0b\u5ea65-15GB<\/li>\n<li>\u6570\u636e\u5e93\u5b58\u50a8\uff1a\u521d\u59cb\u5927\u5c0f\u52a0\u4e0a20-30%\u7684\u5e74\u5ea6\u589e\u957f<\/li>\n<li>\u5907\u4efd\u7a7a\u95f4\uff1a\u5b8c\u6574\u5907\u4efd\u4fdd\u7559\u9700\u8981\u4e3b\u6570\u636e\u5927\u5c0f\u76842-3\u500d<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u51c6\u786e\u7684\u5b58\u50a8\u9884\u6d4b\uff0c\u5b9e\u65bd\u6b64\u8ba1\u7b97\u65b9\u6cd5\uff1a<\/p>\n<p><code>\u6240\u9700\u5b58\u50a8 = (\u64cd\u4f5c\u7cfb\u7edf + \u5e94\u7528\u7a0b\u5e8f + \u6570\u636e\u5e93) * 1.5 + (\u6708\u6570\u636e\u589e\u957f * \u4fdd\u7559\u671f) + \u5907\u4efd\u5b58\u50a8<\/code><\/p>\n<h2><strong>\u9ad8\u7ea7\u76d1\u63a7\u5de5\u5177\u548c\u6307\u6807<\/strong><\/h2>\n<p>\u73b0\u4ee3\u670d\u52a1\u5668\u7ba1\u7406\u9700\u8981\u590d\u6742\u7684\u76d1\u63a7\u89e3\u51b3\u65b9\u6848\u3002\u4ee5\u4e0b\u662f\u5fc5\u8981\u5de5\u5177\u53ca\u5176\u5177\u4f53\u5e94\u7528\u7684\u6280\u672f\u7ec6\u5206\uff1a<\/p>\n<ul>\n<li>\u547d\u4ee4\u884c\u5de5\u5177\uff1a\n<ul>\n<li>vmstat\uff1a\u865a\u62df\u5185\u5b58\u7edf\u8ba1\u53ca\u9875\u9762\u9519\u8bef\u5206\u6790<\/li>\n<li>iostat\uff1aI\/O\u8bbe\u5907\u8d1f\u8f7d\u7edf\u8ba1\uff0c\u5305\u62ec\u961f\u5217\u957f\u5ea6\u6307\u6807<\/li>\n<li>mpstat\uff1a\u591a\u5904\u7406\u5668\u7edf\u8ba1\uff0c\u5305\u62ec\u6bcf\u6838\u5fc3\u4f7f\u7528\u7387<\/li>\n<li>sar\uff1a\u7cfb\u7edf\u6d3b\u52a8\u62a5\u544a\u5668\uff0c\u7528\u4e8e\u5386\u53f2\u6027\u80fd\u6570\u636e<\/li>\n<li>dstat\uff1a\u591a\u529f\u80fd\u8d44\u6e90\u7edf\u8ba1\u5de5\u5177\uff0c\u652f\u6301\u63d2\u4ef6<\/li>\n<\/ul>\n<\/li>\n<li>\u4f01\u4e1a\u76d1\u63a7\u89e3\u51b3\u65b9\u6848\uff1a\n<ul>\n<li>Prometheus\uff1a\u65f6\u95f4\u5e8f\u5217\u6307\u6807\u6536\u96c6\uff0c\u652f\u6301PromQL<\/li>\n<li>Grafana\uff1a\u6307\u6807\u53ef\u89c6\u5316\uff0c\u5177\u6709\u9ad8\u7ea7\u4eea\u8868\u677f\u529f\u80fd<\/li>\n<li>Node Exporter\uff1a\u7cfb\u7edf\u6307\u6807\u6536\u96c6\uff0c\u652f\u6301\u81ea\u5b9a\u4e49\u6536\u96c6\u5668<\/li>\n<li>Alertmanager\uff1a\u667a\u80fd\u8b66\u62a5\u8def\u7531\u548c\u805a\u5408<\/li>\n<li>ELK Stack\uff1a\u65e5\u5fd7\u805a\u5408\u548c\u5206\u6790\u5e73\u53f0<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u6027\u80fd\u4f18\u5316\u6280\u672f<\/strong><\/h2>\n<p>\u5b9e\u65bd\u9ad8\u6548\u7684\u8d44\u6e90\u7ba1\u7406\u9700\u8981\u7cfb\u7edf\u5316\u7684\u4f18\u5316\u65b9\u6cd5\uff0c\u540c\u65f6\u8003\u8651\u5373\u65f6\u548c\u957f\u671f\u7684\u6027\u80fd\u5f71\u54cd\uff1a<\/p>\n<ol>\n<li>\u8fde\u63a5\u4f18\u5316\uff1a\n<ul>\n<li>\u57fa\u4e8e\u6d41\u91cf\u6a21\u5f0f\u8c03\u6574\u4fdd\u6301\u8fde\u63a5\u8d85\u65f6<\/li>\n<li>\u5b9e\u65bd\u8fde\u63a5\u6c60\u5e76\u4f18\u5316\u6c60\u5927\u5c0f<\/li>\n<li>\u914d\u7f6e\u8d1f\u8f7d\u5747\u8861\u5668\u53ca\u5065\u5eb7\u68c0\u67e5<\/li>\n<li>TCP\u7f13\u51b2\u533a\u5927\u5c0f\u4f18\u5316<\/li>\n<li>\u79ef\u538b\u961f\u5217\u8c03\u4f18<\/li>\n<\/ul>\n<\/li>\n<li>\u6d41\u91cf\u7ba1\u7406\uff1a\n<ul>\n<li>CDN\u5b9e\u65bd\u53ca\u8fb9\u7f18\u4f4d\u7f6e\u4f18\u5316<\/li>\n<li>\u591a\u5c42\u7ea7\u7f13\u5b58\u7b56\u7565<\/li>\n<li>\u57fa\u4e8e\u5185\u5bb9\u7c7b\u578b\u9009\u62e9\u538b\u7f29\u7b97\u6cd5<\/li>\n<li>\u901f\u7387\u9650\u5236\u5b9e\u65bd<\/li>\n<li>\u6d41\u91cf\u4f18\u5148\u7ea7\u89c4\u5219<\/li>\n<\/ul>\n<\/li>\n<li>\u5b58\u50a8\u6548\u7387\uff1a\n<ul>\n<li>\u5b9a\u671f\u65e5\u5fd7\u8f6e\u8f6c\u53ca\u538b\u7f29<\/li>\n<li>\u6570\u636e\u538b\u7f29\u6280\u672f\u9009\u62e9<\/li>\n<li>\u5e26\u4fdd\u7559\u7b56\u7565\u7684\u81ea\u52a8\u6e05\u7406\u811a\u672c<\/li>\n<li>\u78c1\u76d8I\/O\u4f18\u5316<\/li>\n<li>RAID\u914d\u7f6e\u4f18\u5316<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u5e38\u89c1\u95ee\u9898\u6545\u969c\u6392\u9664<\/strong><\/h2>\n<p>\u4e86\u89e3\u5982\u4f55\u8bca\u65ad\u548c\u89e3\u51b3\u670d\u52a1\u5668\u7edf\u8ba1\u95ee\u9898\u5bf9\u4e8e\u7ef4\u6301\u6700\u4f73\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u5e38\u89c1\u95ee\u9898\u53ca\u5176\u89e3\u51b3\u65b9\u6848\u7684\u8be6\u7ec6\u5206\u6790\uff1a<\/p>\n<ul>\n<li>\u8fde\u63a5\u95ee\u9898\uff1a\n<ul>\n<li>TCP\u8d85\u65f6\u914d\u7f6e\u548c\u4f18\u5316<\/li>\n<li>\u8fde\u63a5\u6cc4\u6f0f\u68c0\u6d4b\u548c\u9884\u9632<\/li>\n<li>SYN\u6d2a\u6c34\u4fdd\u62a4\u7b56\u7565<\/li>\n<li>\u8fde\u63a5\u91cd\u7f6e\u5904\u7406<\/li>\n<li>\u4fdd\u6301\u8fde\u63a5\u914d\u7f6e\u95ee\u9898<\/li>\n<\/ul>\n<\/li>\n<li>\u6d41\u91cf\u5f02\u5e38\uff1a\n<ul>\n<li>DDoS\u68c0\u6d4b\u6a21\u5f0f\u548c\u7f13\u89e3<\/li>\n<li>\u5e26\u5bbd\u9650\u5236\u6280\u672f\u5b9e\u65bd<\/li>\n<li>\u6d41\u91cf\u6574\u5f62\u5b9e\u65bd\u7b56\u7565<\/li>\n<li>\u670d\u52a1\u8d28\u91cf(QoS)\u914d\u7f6e<\/li>\n<li>\u7f51\u7edc\u62e5\u585e\u7ba1\u7406<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u957f\u671f\u76d1\u63a7\u6700\u4f73\u5b9e\u8df5<\/strong><\/h2>\n<p>\u5b9e\u65bd\u8fd9\u4e9b\u7ecf\u8fc7\u9a8c\u8bc1\u7684\u7b56\u7565\u4ee5\u4fdd\u6301\u670d\u52a1\u5668\u6027\u80fd\u548c\u53ef\u9760\u6027\uff1a<\/p>\n<ol>\n<li>\u81ea\u52a8\u5316\u76d1\u63a7\uff1a\n<ul>\n<li>\u8bbe\u7f6e\u5177\u6709\u6e10\u8fdb\u4e25\u91cd\u7a0b\u5ea6\u7684\u8b66\u62a5\u9608\u503c<\/li>\n<li>\u6839\u636e\u91cd\u8981\u6027\u914d\u7f6e\u6307\u6807\u6536\u96c6\u95f4\u9694<\/li>\n<li>\u5b9e\u65bd\u5bb9\u91cf\u89c4\u5212\u7684\u9884\u6d4b\u5206\u6790<\/li>\n<li>\u5efa\u7acb\u57fa\u51c6\u6027\u80fd\u6307\u6807<\/li>\n<li>\u90e8\u7f72\u81ea\u52a8\u6062\u590d\u7a0b\u5e8f<\/li>\n<\/ul>\n<\/li>\n<li>\u6587\u6863\uff1a\n<ul>\n<li>\u7ef4\u62a4\u5e26\u56de\u6eda\u7a0b\u5e8f\u7684\u8be6\u7ec6\u53d8\u66f4\u65e5\u5fd7<\/li>\n<li>\u8bb0\u5f55\u57fa\u51c6\u6307\u6807\u548c\u53ef\u63a5\u53d7\u8303\u56f4<\/li>\n<li>\u521b\u5efa\u5168\u9762\u7684\u4e8b\u4ef6\u54cd\u5e94\u7a0b\u5e8f<\/li>\n<li>\u5f00\u53d1\u5e38\u89c1\u573a\u666f\u7684\u8fd0\u884c\u624b\u518c<\/li>\n<li>\u7ef4\u62a4\u914d\u7f6e\u7ba1\u7406\u6570\u636e\u5e93<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u7ed3\u8bba<\/strong><\/h2>\n<p>\u638c\u63e1\u670d\u52a1\u5668\u7edf\u8ba1\u5bf9\u4e8e\u7ef4\u6301\u6700\u4f73\u670d\u52a1\u5668\u79df\u7528\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u7406\u89e3\u8fde\u63a5\u3001\u6d41\u91cf\u6a21\u5f0f\u548c\u5b58\u50a8\u8ba1\u7b97\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u670d\u52a1\u5668\u57fa\u7840\u8bbe\u65bd\u4ee5\u6700\u9ad8\u6548\u7387\u8fd0\u884c\u3002\u5b9a\u671f\u76d1\u63a7\u3001\u4e3b\u52a8\u4f18\u5316\u548c\u9002\u5f53\u7684\u6587\u6863\u8bb0\u5f55\u662f\u5728\u5f53\u4eca\u8981\u6c42\u4e25\u683c\u7684\u6570\u5b57\u73af\u5883\u4e2d\u7ef4\u6301\u5f3a\u5927\u670d\u52a1\u5668\u8fd0\u8425\u7684\u5173\u952e\u3002<\/p>\n<p>\u65e0\u8bba\u60a8\u662f\u7ba1\u7406\u5c0f\u578b\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u8fd8\u662f\u5927\u89c4\u6a21\u670d\u52a1\u5668\u57fa\u7840\u8bbe\u65bd\uff0c\u8fd9\u4e9b\u5173\u4e8e\u670d\u52a1\u5668\u7edf\u8ba1\u3001\u8fde\u63a5\u6307\u6807\u548c\u8d44\u6e90\u4f18\u5316\u7684\u6280\u672f\u89c1\u89e3\u90fd\u5c06\u5e2e\u52a9\u60a8\u7ef4\u6301\u7a33\u5065\u9ad8\u6548\u7684\u8fd0\u8425\u3002\u8bf7\u8bb0\u4f4f\u968f\u7740\u6280\u672f\u53d1\u5c55\u548c\u65b0\u5de5\u5177\u7684\u51fa\u73b0\u5b9a\u671f\u5ba1\u67e5\u548c\u66f4\u65b0\u60a8\u7684\u76d1\u63a7\u7b56\u7565\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5f53\u4eca\u6570\u636e\u9a71\u52a8\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\uff0c\u7406\u89e3\u670d\u52a1\u5668\u7edf\u8ba1\u4e0d\u4ec5\u4ec5\u662f\u76d1\u63a7\u95ee\u9898\uff0c\u66f4\u662f\u638c\u63e1\u9a71\u52a8\u6027\u80fd\u7684\u6307\u6807\u3002\u65e0\u8bba\u60a8\u662f\u7ba1\u7406\u5355\u4e2a\u5b9e\u4f8b\u8fd8\u662f\u534f\u8c03\u6574\u4e2a\u670d\u52a1\u5668\u673a\u7fa4\uff0c\u638c\u63e1\u8fde\u63a5\u3001\u6d41\u91cf\u548c\u7a7a\u95f4\u8ba1\u7b97\u7684\u57fa\u7840\u77e5\u8bc6\u5bf9\u4e8e\u4f18\u5316\u670d\u52a1\u5668\u8fd0\u8425\u81f3\u5173\u91cd\u8981\u3002\u968f\u7740\u6570\u5b57\u670d\u52a1\u548c\u4e91\u8ba1\u7b97\u7684\u6307\u6570\u7ea7\u589e\u957f\uff0c\u8fd9\u4e9b\u6307\u6807\u53d8\u5f97\u8d8a\u6765\u8d8a\u590d\u6742\u548c\u76f8\u4e92\u5173\u8054\u3002 \u6df1\u5165\u7406\u89e3\u670d\u52a1\u5668\u8fde\u63a5 \u670d\u52a1\u5668\u8fde\u63a5\u6784\u6210\u4e86\u60a8\u7684\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u7684\u4e3b\u5e72\u3002\u4e0e\u5176\u4ed6\u5730\u65b9\u53ef\u80fd\u627e\u5230\u7684\u7b80\u5316\u89e3\u91ca\u4e0d\u540c\uff0c\u8ba9\u6211\u4eec\u6df1\u5165\u63a2\u8ba8\u8fde\u63a5\u6307\u6807\u7684\u6280\u672f\u5c42\u9762\u3002\u7406\u89e3\u8fde\u63a5\u72b6\u6001\u53ca\u5176\u542b\u4e49\u53ef\u4ee5\u5728\u5e73\u7a33\u8fd0\u884c\u7684\u670d\u52a1\u5668\u548c\u7ecf\u5e38\u9047\u5230\u74f6\u9888\u7684\u670d\u52a1\u5668\u4e4b\u95f4\u4ea7\u751f\u5dee\u5f02\u3002 TCP\u8fde\u63a5\u72b6\u6001 ESTABLISHED\uff1a\u5904\u7406\u6570\u636e\u4f20\u8f93\u7684\u6d3b\u52a8\u8fde\u63a5\uff0c\u9700\u8981\u4ed4\u7ec6\u76d1\u63a7\u8d85\u65f6\u503c\u548c\u4fdd\u6301\u8fde\u63a5\u8bbe\u7f6e TIME_WAIT\uff1a\u6b63\u5728\u5173\u95ed\u8fc7\u7a0b\u4e2d\u7684\u8fde\u63a5\uff0c\u5bf9\u4e8e\u9632\u6b62\u6570\u636e\u4e22\u5931\u548c\u786e\u4fdd\u6b63\u786e\u7684\u8fde\u63a5\u7ec8\u6b62\u81f3\u5173\u91cd\u8981 LISTEN\uff1a\u7b49\u5f85\u65b0\u8fde\u63a5\u7684\u7aef\u53e3\uff0c\u9700\u8981\u9002\u5f53\u7684\u79ef\u538b\u961f\u5217\u914d\u7f6e SYN_SENT\uff1a\u5916\u53d1\u8fde\u63a5\u5c1d\u8bd5\uff0c\u5bf9\u4e8e\u8ddf\u8e2a\u5ba2\u6237\u7aef\u53d1\u8d77\u7684\u8fde\u63a5\u5f88\u91cd\u8981 SYN_RECEIVED\uff1a\u4f20\u5165\u8fde\u63a5\u8bf7\u6c42\uff0c\u5bf9\u4e8e\u76d1\u63a7\u6f5c\u5728\u7684SYN\u6d2a\u6c34\u653b\u51fb\u81f3\u5173\u91cd\u8981 \u8fde\u63a5\u8ba1\u7b97\u65b9\u6cd5 netstat\u547d\u4ee4\u7528\u4e8e\u5b9e\u65f6\u76d1\u63a7\u8be6\u7ec6\u7684TCP\/UDP\u7edf\u8ba1\u4fe1\u606f ss\u5b9e\u7528\u7a0b\u5e8f\u7528\u4e8e\u8be6\u7ec6\u7684\u5957\u63a5\u5b57\u7edf\u8ba1\uff0c\u652f\u6301\u66f4\u65b0\u7684Linux\u5185\u6838\u529f\u80fd lsof\u7528\u4e8e\u6587\u4ef6\u63cf\u8ff0\u7b26\u5206\u6790\u548c\u8bc6\u522b\u6f5c\u5728\u7684\u63cf\u8ff0\u7b26\u6cc4\u6f0f conntrack\u7528\u4e8e\u5728NAT\u73af\u5883\u4e2d\u8ddf\u8e2a\u8fde\u63a5\u72b6\u6001 iptables\u8fde\u63a5\u8ddf\u8e2a\u7528\u4e8e\u9632\u706b\u5899\u7ea7\u522b\u7684\u8fde\u63a5\u76d1\u63a7 \u8981\u8ba1\u7b97\u670d\u52a1\u5668\u7684\u6700\u4f73\u8fde\u63a5\u5bb9\u91cf\uff0c\u8bf7\u4f7f\u7528\u6b64\u516c\u5f0f\uff1a \u6700\u5927\u8fde\u63a5\u6570 = (\u670d\u52a1\u5668RAM * 0.8) \/ (\u5e73\u5747\u8fde\u63a5\u5185\u5b58\u4f7f\u7528\u91cf) \u5728\u5fae\u8c03\u8fde\u63a5\u9650\u5236\u65f6\uff0c\u8bf7\u8003\u8651\u4ee5\u4e0b\u9644\u52a0\u56e0\u7d20\uff1a \u5185\u6838\u53c2\u6570\uff0c\u5982net.core.somaxconn\u548cnet.ipv4.tcp_max_syn_backlog \u53ef\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08ulimit\u8bbe\u7f6e\uff09 \u5e94\u7528\u7a0b\u5e8f\u7279\u5b9a\u7684\u8fde\u63a5\u6c60\u914d\u7f6e \u6d41\u91cf\u5206\u6790\u548c\u5e26\u5bbd\u6307\u6807 \u7406\u89e3\u6d41\u91cf\u6a21\u5f0f\u9700\u8981\u7cfb\u7edf\u5316\u7684\u5e26\u5bbd\u6d4b\u91cf\u65b9\u6cd5\u3002\u73b0\u4ee3\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u9700\u8981\u590d\u6742\u7684\u6d41\u91cf\u5206\u6790\u5de5\u5177\u548c\u65b9\u6cd5\u6765\u786e\u4fdd\u6700\u4f73\u8d44\u6e90\u5206\u914d\u548c\u6210\u672c\u7ba1\u7406\u3002 \u5e26\u5bbd\u8ba1\u7b97\uff1a \u6708\u6d41\u91cf = \u5e73\u5747\u5e26\u5bbd * 2.1 TB\/Mbps \u5cf0\u503c\u4f7f\u7528\u91cf = \u6b63\u5e38\u4f7f\u7528\u91cf * 1.5\uff08\u7f13\u51b2\u56e0\u5b50\uff09 \u5b9e\u65f6\u4f7f\u7528\u91cf = \u03a3(\u4f20\u5165\u6570\u636e\u5305 + \u4f20\u51fa\u6570\u636e\u5305) \/ \u65f6\u95f4\u95f4\u9694 \u7a81\u53d1\u5bb9\u91cf = \u5cf0\u503c\u4f7f\u7528\u91cf * 1.2\uff08\u5b89\u5168\u8fb9\u9645\uff09 \u6210\u672c\u4f18\u5316 = [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-cn\/blog\/us-server-statistics-guide-connections-traffic-and-space\/\">Read 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