{"id":50621,"date":"2024-10-08T12:33:13","date_gmt":"2024-10-08T04:33:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/50621\/"},"modified":"2024-10-08T12:33:13","modified_gmt":"2024-10-08T04:33:13","slug":"nginx-%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%ef%bc%9a%e4%bd%bf%e7%94%a8-limit_conn-%e6%a8%a1%e5%a1%8a%e9%99%90%e5%88%b6%e4%b8%a6%e7%99%bc%e9%80%a3%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/50621\/","title":{"rendered":"Nginx \u5b89\u5168\u7b56\u7565\uff1a\u4f7f\u7528 limit_conn \u6a21\u584a\u9650\u5236\u4e26\u767c\u9023\u63a5"},"content":{"rendered":"<h1 id=\"nginx-%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%ef%bc%9a%e4%bd%bf%e7%94%a8-limit_conn-%e6%a8%a1%e5%a1%8a%e9%99%90%e5%88%b6%e4%b8%a6%e7%99%bc%e9%80%a3%e6%8e%a5-rAiGsTMyID\">Nginx \u5b89\u5168\u7b56\u7565\uff1a\u4f7f\u7528 limit_conn \u6a21\u584a\u9650\u5236\u4e26\u767c\u9023\u63a5<\/h1>\n<p>Nginx \u662f\u4e00\u6b3e\u9ad8\u6548\u80fd\u7684\u7db2\u9801\u4f3a\u670d\u5668\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5f0f\u4e2d\u3002\u96a8\u8457\u7db2\u8def\u653b\u64ca\u624b\u6cd5\u7684\u65e5\u76ca\u589e\u591a\uff0c\u7db2\u7ad9\u7684\u5b89\u5168\u6027\u6210\u70ba\u4e86\u6bcf\u500b\u7ba1\u7406\u8005\u5fc5\u9808\u91cd\u8996\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e Nginx \u7684 <code>limit_conn<\/code> \u6a21\u584a\uff0c\u4e26\u4ecb\u7d39\u5982\u4f55\u5229\u7528\u8a72\u6a21\u584a\u4f86\u9650\u5236\u4e26\u767c\u9023\u63a5\uff0c\u4ee5\u589e\u5f37\u7db2\u7ad9\u7684\u5b89\u5168\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-limit_conn-%e6%a8%a1%e5%a1%8a%ef%bc%9f-rAiGsTMyID\">\u4ec0\u9ebc\u662f limit_conn \u6a21\u584a\uff1f<\/h2>\n<p><code>limit_conn<\/code> \u6a21\u584a\u662f Nginx \u63d0\u4f9b\u7684\u4e00\u500b\u529f\u80fd\uff0c\u65e8\u5728\u9650\u5236\u540c\u4e00\u6642\u9593\u5167\u4f86\u81ea\u7279\u5b9a IP \u5730\u5740\u7684\u9023\u63a5\u6578\u91cf\u3002\u9019\u4e00\u529f\u80fd\u53ef\u4ee5\u6709\u6548\u9632\u6b62 DDoS \u653b\u64ca\u3001\u66b4\u529b\u7834\u89e3\u7b49\u5b89\u5168\u5a01\u8105\uff0c\u5f9e\u800c\u4fdd\u8b77\u4f3a\u670d\u5668\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u7528\u6027\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e9%99%90%e5%88%b6%e4%b8%a6%e7%99%bc%e9%80%a3%e6%8e%a5%ef%bc%9f-rAiGsTMyID\">\u70ba\u4ec0\u9ebc\u9700\u8981\u9650\u5236\u4e26\u767c\u9023\u63a5\uff1f<\/h2>\n<p>\u96a8\u8457\u7db2\u8def\u6d41\u91cf\u7684\u589e\u52a0\uff0c\u7db2\u7ad9\u9762\u81e8\u7684\u5b89\u5168\u5a01\u8105\u4e5f\u5728\u4e0d\u65b7\u4e0a\u5347\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u9700\u8981\u9650\u5236\u4e26\u767c\u9023\u63a5\u7684\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u9632\u6b62 DDoS \u653b\u64ca\uff1a<\/strong>\u653b\u64ca\u8005\u53ef\u4ee5\u901a\u904e\u5927\u91cf\u7684\u8acb\u6c42\u4f86\u7671\u7613\u4f3a\u670d\u5668\uff0c\u9650\u5236\u4e26\u767c\u9023\u63a5\u53ef\u4ee5\u6e1b\u5c11\u9019\u7a2e\u653b\u64ca\u7684\u5f71\u97ff\u3002<\/li>\n<li><strong>\u4fdd\u8b77\u4f3a\u670d\u5668\u8cc7\u6e90\uff1a<\/strong>\u904e\u591a\u7684\u9023\u63a5\u6703\u6d88\u8017\u4f3a\u670d\u5668\u7684 CPU \u548c\u5167\u5b58\u8cc7\u6e90\uff0c\u5c0e\u81f4\u6b63\u5e38\u7528\u6236\u7121\u6cd5\u8a2a\u554f\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u7db2\u7ad9\u6027\u80fd\uff1a<\/strong>\u901a\u904e\u9650\u5236\u4e0d\u5fc5\u8981\u7684\u9023\u63a5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7db2\u7ad9\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u7a69\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e9%85%8d%e7%bd%ae-limit_conn-%e6%a8%a1%e5%a1%8a-rAiGsTMyID\">\u5982\u4f55\u914d\u7f6e limit_conn \u6a21\u584a<\/h2>\n<p>\u8981\u4f7f\u7528 <code>limit_conn<\/code> \u6a21\u584a\uff0c\u9996\u5148\u9700\u8981\u78ba\u4fdd Nginx \u5df2\u7d93\u7de8\u8b6f\u4e86\u8a72\u6a21\u584a\u3002\u63a5\u4e0b\u4f86\uff0c\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\u914d\u7f6e\uff1a<\/p>\n<h3 id=\"1-%e7%b7%a8%e8%bc%af-nginx-%e9%85%8d%e7%bd%ae%e6%96%87%e4%bb%b6-rAiGsTMyID\">1. \u7de8\u8f2f Nginx \u914d\u7f6e\u6587\u4ef6<\/h3>\n<p>\u6253\u958b Nginx \u7684\u4e3b\u914d\u7f6e\u6587\u4ef6\uff0c\u901a\u5e38\u4f4d\u65bc <code>\/etc\/nginx\/nginx.conf<\/code> \u6216\u8005\u67d0\u500b\u865b\u64ec\u4e3b\u6a5f\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u3002<\/p>\n<h3 id=\"2-%e8%a8%ad%e5%ae%9a%e9%99%90%e5%88%b6%e8%a6%8f%e5%89%87-rAiGsTMyID\">2. \u8a2d\u5b9a\u9650\u5236\u898f\u5247<\/h3>\n<p>\u5728 server \u5340\u584a\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u914d\u7f6e\uff1a<\/p>\n<pre><code>http {\n    limit_conn_zone $binary_remote_addr zone=addr:10m;\n\n    server {\n        listen 80;\n        server_name example.com;\n\n        location \/ {\n            limit_conn addr 10;  # \u6bcf\u500b IP \u5730\u5740\u6700\u591a 10 \u500b\u9023\u63a5\n            proxy_pass http:\/\/backend;\n        }\n    }\n}<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u914d\u7f6e\u4e2d\uff0c<code>limit_conn_zone<\/code> \u6307\u4ee4\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba <code>addr<\/code> \u7684\u5340\u57df\uff0c\u7528\u65bc\u5b58\u5132\u6bcf\u500b IP \u5730\u5740\u7684\u9023\u63a5\u6578\u91cf\u3002<code>limit_conn<\/code> \u6307\u4ee4\u5247\u9650\u5236\u4e86\u6bcf\u500b IP \u5730\u5740\u6700\u591a\u53ef\u4ee5\u6709 10 \u500b\u4e26\u767c\u9023\u63a5\u3002<\/p>\n<h3 id=\"3-%e9%87%8d%e6%96%b0%e5%8a%a0%e8%bc%89-nginx-%e9%85%8d%e7%bd%ae-rAiGsTMyID\">3. \u91cd\u65b0\u52a0\u8f09 Nginx \u914d\u7f6e<\/h3>\n<p>\u5b8c\u6210\u914d\u7f6e\u5f8c\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u91cd\u65b0\u52a0\u8f09 Nginx\uff1a<\/p>\n<pre><code>sudo nginx -s reload<\/code><\/pre>\n<h2 id=\"%e6%b8%ac%e8%a9%a6%e9%85%8d%e7%bd%ae-rAiGsTMyID\">\u6e2c\u8a66\u914d\u7f6e<\/h2>\n<p>\u53ef\u4ee5\u4f7f\u7528\u5de5\u5177\u5982 <code>ab<\/code>\uff08Apache Benchmark\uff09\u4f86\u6e2c\u8a66\u914d\u7f6e\u662f\u5426\u751f\u6548\u3002\u4f8b\u5982\uff0c\u57f7\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>ab -n 100 -c 20 http:\/\/example.com\/<\/code><\/pre>\n<p>\u5982\u679c\u914d\u7f6e\u6b63\u78ba\uff0c\u7576\u540c\u4e00 IP \u5730\u5740\u7684\u9023\u63a5\u6578\u8d85\u904e 10 \u6642\uff0c\u5c07\u6703\u6536\u5230 503 \u932f\u8aa4\uff0c\u8868\u793a\u670d\u52d9\u4e0d\u53ef\u7528\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-rAiGsTMyID\">\u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u4f7f\u7528 Nginx \u7684 <code>limit_conn<\/code> \u6a21\u584a\uff0c\u7db2\u7ad9\u7ba1\u7406\u8005\u53ef\u4ee5\u6709\u6548\u5730\u9650\u5236\u4e26\u767c\u9023\u63a5\uff0c\u5f9e\u800c\u589e\u5f37\u7db2\u7ad9\u7684\u5b89\u5168\u6027\u548c\u7a69\u5b9a\u6027\u3002\u9019\u4e0d\u50c5\u80fd\u5920\u9632\u6b62 DDoS \u653b\u64ca\uff0c\u9084\u80fd\u4fdd\u8b77\u4f3a\u670d\u5668\u8cc7\u6e90\uff0c\u63d0\u9ad8\u7db2\u7ad9\u6027\u80fd\u3002\u5c0d\u65bc\u5e0c\u671b\u63d0\u5347\u7db2\u7ad9\u5b89\u5168\u6027\u7684\u7ba1\u7406\u8005\u4f86\u8aaa\uff0c\u9019\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u53ca\u5176\u5b89\u5168\u914d\u7f6e\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 Nginx \u7684 limit_conn \u6a21\u584a\u4f86\u9650\u5236\u4e26\u767c\u9023\u63a5\uff0c\u589e\u5f37\u7db2\u7ad9\u5b89\u5168\u6027\uff0c\u9632\u6b62\u904e\u8f09\u548c\u653b\u64ca\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-50621","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/50621","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=50621"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/50621\/revisions"}],"predecessor-version":[{"id":50622,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/50621\/revisions\/50622"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=50621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=50621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=50621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}