{"id":33121,"date":"2025-03-04T11:33:54","date_gmt":"2025-03-04T03:33:54","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=33121"},"modified":"2025-03-04T11:33:54","modified_gmt":"2025-03-04T03:33:54","slug":"ebpf%e5%9c%a8%e5%be%ae%e6%9c%8d%e5%8a%a1%e6%9e%b6%e6%9e%84%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/33121.html","title":{"rendered":"eBPF\u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2025\/03\/973m2lLwTW.jpg\" alt=\"eBPF\u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\uff1f\" ><\/p>\n<\/p>\n<p>\u5728\u4e91\u539f\u751f\u6280\u672f\u5e2d\u5377\u5168\u7403\u7684\u4eca\u5929\uff0c\u5fae\u670d\u52a1\u67b6\u6784\u51ed\u501f\u5176\u654f\u6377\u5f00\u53d1\u3001\u7075\u6d3b\u6269\u5c55\u7684\u4f18\u52bf\uff0c\u5df2\u6210\u4e3a\u652f\u6491\u73b0\u4ee3\u5e94\u7528\u7684\u6838\u5fc3\u8303\u5f0f\u3002\u4f46\u786c\u5e01\u7684\u53e6\u4e00\u9762\u662f\uff1a\u5f53\u6570\u4ee5\u5343\u8ba1\u7684\u5bb9\u5668\u5b9e\u4f8b\u5728\u96c6\u7fa4\u4e2d\u9891\u7e41\u4ea4\u4e92\uff0c\u5f53\u670d\u52a1\u95f4\u7684\u8c03\u7528\u94fe\u8def\u53d8\u5f97\u5982\u86db\u7f51\u822c\u590d\u6742\uff0c\u4f20\u7edf\u7684\u76d1\u63a7\u5de5\u5177\u5f00\u59cb\u66b4\u9732\u51fa\u6027\u80fd\u635f\u8017\u5927\u3001\u89c2\u6d4b\u7c92\u5ea6\u7c97\u7684\u81f4\u547d\u7f3a\u9677\u3002<strong>\u5728\u8fd9\u4e2a\u80cc\u666f\u4e0b\uff0c<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\u6280\u672f\u6b63\u4ee5\u9769\u547d\u6027\u7684\u65b9\u5f0f\u91cd\u6784\u5fae\u670d\u52a1\u6cbb\u7406\u4f53\u7cfb<\/strong>\u2014\u2014\u5b83\u80fd\u4ee5\u63a5\u8fd1\u96f6\u635f\u8017\u7684\u4ee3\u4ef7\uff0c\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u5c42\u5b9e\u73b0\u7ec6\u7c92\u5ea6\u7684\u6d41\u91cf\u6d1e\u5bdf\u4e0e\u7cbe\u51c6\u63a7\u5236\uff0c\u8fd9\u65e0\u5f02\u4e8e\u4e3a\u5fae\u670d\u52a1\u7cfb\u7edf\u88c5\u4e0a&rdquo;X\u5c04\u7ebf\u900f\u89c6\u4eea&rdquo;\u3002<\/p>\n<hr>\n<h3 id=\"\u4e00-\u5185\u6838\u7ea7\u89c2\u6d4b-\u7a7f\u900f\u5bb9\u5668\u8fb9\u754c\u7684\u5168\u94fe\u8def\u8ffd\u8e2a\">\u4e00\u3001\u5185\u6838\u7ea7\u89c2\u6d4b\uff1a\u7a7f\u900f\u5bb9\u5668\u8fb9\u754c\u7684\u5168\u94fe\u8def\u8ffd\u8e2a<\/h3>\n<p>\u5fae\u670d\u52a1\u67b6\u6784\u7684\u5206\u5e03\u5f0f\u7279\u6027\u4f7f\u5f97\u4f20\u7edf\u7684APM\uff08<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">\u5e94\u7528\u6027\u80fd\u7ba1\u7406<\/a>\uff09\u5de5\u5177\u9762\u4e34\u5de8\u5927\u6311\u6218\u3002\u57fa\u4e8e\u65e5\u5fd7\u63d2\u6869\u7684\u65b9\u6848\u9700\u8981\u4fee\u6539\u5e94\u7528\u4ee3\u7801\uff0c\u800c\u901a\u8fc7sidecar\u4ee3\u7406\u7684\u65b9\u5f0f\u53c8\u4f1a\u5e26\u6765\u989d\u5916\u7684\u8d44\u6e90\u5f00\u9500\u3002<strong><a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\u7684\u7a81\u7834\u5728\u4e8e\u5176\u80fd\u5728\u5185\u6838\u7a7a\u95f4\u76f4\u63a5\u6355\u83b7\u7f51\u7edc\u6570\u636e\u5305\u3001\u7cfb\u7edf\u8c03\u7528\u7b49\u5e95\u5c42\u4e8b\u4ef6<\/strong>\uff0c\u8fd9\u79cd\u65e0\u4fb5\u5165\u5f0f\u7684\u89c2\u6d4b\u65b9\u5f0f\u5f7b\u5e95\u6539\u53d8\u4e86\u6e38\u620f\u89c4\u5219\u3002<\/p>\n<p>\u4ee5Istio\u670d\u52a1\u7f51\u683c\u4e3a\u4f8b\uff0c\u4f20\u7edf\u65b9\u6848\u4e2dEnvoy\u4ee3\u7406\u9700\u8981\u62e6\u622a\u6240\u6709\u8fdb\u51fa\u5bb9\u5668\u7684\u6d41\u91cf\u3002\u800c\u91c7\u7528eBPF\u6280\u672f\u540e\uff0c\u53ef\u4ee5\u76f4\u63a5\u5728\u5185\u6838\u5c42\u9762\u83b7\u53d6socket\u7ea7\u522b\u7684\u901a\u4fe1\u6570\u636e\uff0c\u4e0d\u4ec5\u5c06\u5ef6\u8fdf\u4ece\u6beb\u79d2\u7ea7\u964d\u81f3\u5fae\u79d2\u7ea7\uff0c\u8fd8\u80fd\u7ed5\u8fc7\u7528\u6237\u6001\u5230\u5185\u6838\u6001\u7684\u6570\u636e\u62f7\u8d1d\u3002\u6765\u81eaCNCF\u7684\u6700\u65b0\u6570\u636e\u663e\u793a\uff0c\u8fd9\u79cd\u67b6\u6784\u4f7f\u670d\u52a1\u7f51\u683c\u7684\u8d44\u6e90\u6d88\u8017\u964d\u4f4e\u8fbe62%\u3002<\/p>\n<p>\u66f4\u503c\u5f97\u5173\u6ce8\u7684\u662feBPF\u5728<strong>\u534f\u8bae\u89e3\u6790<\/strong>\u65b9\u9762\u7684\u72ec\u7279\u4f18\u52bf\u3002\u901a\u8fc7\u52a0\u8f7d\u7279\u5b9a\u7684BPF\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u5b9e\u65f6\u89e3\u6790HTTP\/2\u3001gRPC\u7b49\u590d\u6742\u534f\u8bae\u5934\u90e8\u4fe1\u606f\u3002\u8fd9\u610f\u5473\u7740\u5f00\u53d1\u8005\u65e0\u9700\u5728\u5e94\u7528\u5c42\u57cb\u70b9\uff0c\u5c31\u80fd\u81ea\u52a8\u6784\u5efa\u5b8c\u6574\u7684<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">\u5206\u5e03\u5f0f\u8ffd\u8e2a<\/a>\u56fe\u8c31\u3002\u67d0\u5934\u90e8\u7535\u5546\u5e73\u53f0\u5728\u91c7\u7528\u8be5\u65b9\u6848\u540e\uff0c\u5c06\u8de8\u670d\u52a1\u6545\u969c\u5b9a\u4f4d\u65f6\u95f4\u4ece\u5e73\u574745\u5206\u949f\u7f29\u77ed\u81f38\u5206\u949f\u3002<\/p>\n<hr>\n<h3 id=\"\u4e8c-\u667a\u80fd\u6d41\u91cf\u8c03\u5ea6-\u4ece\u88ab\u52a8\u76d1\u63a7\u5230\u4e3b\u52a8\u8c03\u63a7\">\u4e8c\u3001\u667a\u80fd\u6d41\u91cf\u8c03\u5ea6\uff1a\u4ece\u88ab\u52a8\u76d1\u63a7\u5230\u4e3b\u52a8\u8c03\u63a7<\/h3>\n<p>\u5f53\u89c2\u6d4b\u4f53\u7cfb\u7a81\u7834\u6570\u636e\u91c7\u96c6\u7684\u74f6\u9888\u540e\uff0ceBPF\u5f00\u59cb\u5c55\u73b0\u5176\u66f4\u5f3a\u5927\u7684\u8c03\u63a7\u80fd\u529b\u3002<strong>\u901a\u8fc7XDP\uff08eXpress Data Path\uff09\u6280\u672f\uff0c\u7f51\u7edc\u6570\u636e\u5305\u5728\u5230\u8fbe\u5185\u6838\u534f\u8bae\u6808\u4e4b\u524d\u5c31\u80fd\u88ab\u5904\u7406<\/strong>\uff0c\u8fd9\u4e3a\u5fae\u670d\u52a1\u6d41\u91cf\u7ba1\u7406\u5f00\u8f9f\u4e86\u65b0\u7ef4\u5ea6\u3002<\/p>\n<p>\u5728\u6df7\u5408\u4e91\u573a\u666f\u4e2d\uff0c\u67d0\u91d1\u878d\u79d1\u6280\u516c\u53f8\u5229\u7528XDP\u5b9e\u73b0\u4e86\u667a\u80fd\u6d41\u91cf\u5206\u53d1\u3002\u4ed6\u4eec\u7684BPF\u7a0b\u5e8f\u5b9e\u65f6\u5206\u6790TCP\u5305\u5934\u4e2d\u7684\u6e90IP\u3001TLS SNI\u7b49\u4fe1\u606f\uff0c\u5728\u5185\u6838\u5c42\u5b8c\u6210\u6d41\u91cf\u5206\u7c7b\u540e\uff0c\u76f4\u63a5\u5c06\u8bf7\u6c42\u8def\u7531\u5230\u6700\u8fd1\u7684\u53ef\u7528\u533a\u3002\u8fd9\u79cd\u65b9\u6848\u5c06\u7f51\u7edc\u5ef6\u8fdf\u964d\u4f4e\u4e8637%\uff0c\u540c\u65f6\u907f\u514d\u4e86\u7528\u6237\u6001\u4ee3\u7406\u5e26\u6765\u7684CPU\u4e89\u7528\u95ee\u9898\u3002<\/p>\n<p>\u66f4\u6709\u521b\u65b0\u6027\u7684\u5b9e\u8df5\u53d1\u751f\u5728<strong>\u670d\u52a1\u7194\u65ad<\/strong>\u9886\u57df\u3002\u4f20\u7edf\u7194\u65ad\u673a\u5236\u4f9d\u8d56\u5e94\u7528\u5c42\u7684\u7edf\u8ba1\u6307\u6807\uff0c\u5b58\u5728\u54cd\u5e94\u6ede\u540e\u7684\u95ee\u9898\u3002\u800c\u57fa\u4e8eeBPF\u7684\u89e3\u51b3\u65b9\u6848\u53ef\u4ee5\u76f4\u63a5\u76d1\u63a7TCP\u91cd\u4f20\u7387\u3001RTT\u6ce2\u52a8\u7b49\u5e95\u5c42\u6307\u6807\uff0c\u5f53\u68c0\u6d4b\u5230\u76ee\u6807\u670d\u52a1\u54cd\u5e94\u65f6\u95f4\u8d85\u8fc7\u9608\u503c\u65f6\uff0c\u7acb\u5373\u5728\u5185\u6838\u5c42\u5b9e\u65bd\u65ad\u8def\uff0c\u5c06\u6545\u969c\u9694\u79bb\u65f6\u95f4\u4ece\u79d2\u7ea7\u538b\u7f29\u5230\u6beb\u79d2\u7ea7\u3002\u8fd9\u79cd&rdquo;\u514d\u75ab\u7cfb\u7edf&rdquo;\u822c\u7684\u5feb\u901f\u53cd\u5e94\u80fd\u529b\uff0c\u4f7f\u5f97\u67d0\u5728\u7ebf\u6559\u80b2\u5e73\u53f0\u7684\u7cfb\u7edf\u53ef\u7528\u6027\u4ece99.95%\u63d0\u5347\u81f399.99%\u3002<\/p>\n<hr>\n<h3 id=\"\u4e09-\u96f6\u4fe1\u4efb\u5b89\u5168\u7684\u57fa\u77f3-\u4ece\u8fb9\u754c\u9632\u62a4\u5230\u7ec6\u7c92\u5ea6\u63a7\u5236\">\u4e09\u3001\u96f6\u4fe1\u4efb\u5b89\u5168\u7684\u57fa\u77f3\uff1a\u4ece\u8fb9\u754c\u9632\u62a4\u5230\u7ec6\u7c92\u5ea6\u63a7\u5236<\/h3>\n<p>\u5fae\u670d\u52a1\u67b6\u6784\u7684\u7206\u70b8\u534a\u5f84\u95ee\u9898\u4e00\u76f4\u56f0\u6270\u7740\u5b89\u5168\u56e2\u961f\u3002\u4f20\u7edf\u57fa\u4e8e\u8fb9\u754c\u7684\u9632\u62a4\u6a21\u578b\u5728\u52a8\u6001\u6269\u5c55\u7684\u5bb9\u5668\u73af\u5883\u4e2d\u9010\u6e10\u5931\u6548\uff0c\u800ceBPF\u63d0\u4f9b\u7684<strong>\u5185\u6838\u7ea7\u6267\u884c\u6c99\u7bb1<\/strong>\u4e3a\u5b89\u5168\u9632\u62a4\u63d0\u4f9b\u4e86\u65b0\u601d\u8def\u3002<\/p>\n<p>\u901a\u8fc7LSM\uff08Linux Security 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