{"id":32621,"date":"2025-03-04T10:31:04","date_gmt":"2025-03-04T02:31:04","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=32621"},"modified":"2025-03-04T10:31:04","modified_gmt":"2025-03-04T02:31:04","slug":"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8ebpf%e4%bc%98%e5%8c%96%e7%bd%91%e7%bb%9c%e6%80%a7%e8%83%bd%e7%9b%91%e6%8e%a7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/32621.html","title":{"rendered":"\u5982\u4f55\u5229\u7528eBPF\u4f18\u5316\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/pic.zadbj010.com\/2025\/592505d65d51a2e.jpg\" alt=\"\u5982\u4f55\u5229\u7528eBPF\u4f18\u5316\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\uff1f\" ><\/p>\n<\/p>\n<hr>\n<p><strong>\u524d\u8a00<\/strong><br \/>\n\u5728\u4e91\u8ba1\u7b97\u4e0e\u5fae\u670d\u52a1\u67b6\u6784\u4e3b\u5bfc\u7684\u6570\u5b57\u5316\u65f6\u4ee3\uff0c<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">\u7f51\u7edc\u6027\u80fd\u76d1\u63a7<\/a>\u5df2\u6210\u4e3a\u4f01\u4e1a\u4fdd\u969c\u4e1a\u52a1\u8fde\u7eed\u6027\u7684\u6838\u5fc3\u9700\u6c42\u3002\u4f20\u7edf\u7684\u76d1\u63a7\u5de5\u5177\u5f80\u5f80\u9762\u4e34\u6570\u636e\u91c7\u96c6\u6548\u7387\u4f4e\u3001\u8d44\u6e90\u6d88\u8017\u9ad8\u3001\u7075\u6d3b\u6027\u4e0d\u8db3\u7b49\u95ee\u9898\u3002\u800c<strong>eBPF\uff08Extended Berkeley Packet Filter\uff09<\/strong>\u6280\u672f\u7684\u5d1b\u8d77\uff0c\u4e3a\u89e3\u51b3\u8fd9\u4e9b\u75db\u70b9\u63d0\u4f9b\u4e86\u5168\u65b0\u7684\u601d\u8def\u3002\u901a\u8fc7\u52a8\u6001\u8ffd\u8e2a\u5185\u6838\u4e0e\u7528\u6237\u6001\u7a0b\u5e8f\u7684\u4ea4\u4e92\uff0ceBPF\u4e0d\u4ec5\u80fd\u5b9e\u73b0<strong>\u96f6\u4fb5\u5165\u5f0f\u89c2\u6d4b<\/strong>\uff0c\u8fd8\u80fd\u5c06<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">\u7f51\u7edc\u6027\u80fd\u76d1\u63a7<\/a>\u7684\u7cbe\u5ea6\u548c\u6548\u7387\u63d0\u5347\u5230\u65b0\u7684\u7ef4\u5ea6\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u5982\u4f55\u5229\u7528eBPF\u6280\u672f\u6784\u5efa\u9ad8\u6548\u3001\u4f4e\u6210\u672c\u7684\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\u4f53\u7cfb\uff0c\u5e76\u63ed\u793a\u5176\u5728\u5b9e\u9645\u573a\u666f\u4e2d\u7684\u5173\u952e\u4ef7\u503c\u3002<\/p>\n<hr>\n<h3 id=\"\u4e00-\u4f20\u7edf\u7f51\u7edc\u76d1\u63a7\u7684\u74f6\u9888\u4e0eebpf\u7684\u9769\u65b0\u6027\"><strong>\u4e00\u3001\u4f20\u7edf\u7f51\u7edc\u76d1\u63a7\u7684\u74f6\u9888\u4e0eeBPF\u7684\u9769\u65b0\u6027<\/strong><\/h3>\n<p>\u5728\u6df1\u5165\u8ba8\u8bbaeBPF\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u660e\u786e\u4f20\u7edf\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\u7684\u5c40\u9650\u3002\u5e38\u89c1\u7684\u5de5\u5177\u5982tcpdump\u3001netstat\u6216\u57fa\u4e8eSNMP\u7684\u65b9\u6848\uff0c\u901a\u5e38\u4f9d\u8d56\u5468\u671f\u6027\u7684\u6570\u636e\u91c7\u6837\u6216\u5b8c\u6574\u7684\u6570\u636e\u5305\u6355\u83b7\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u80fd\u5bfc\u81f4\u4ee5\u4e0b\u95ee\u9898\uff1a<\/p>\n<ol>\n<li><strong>\u9ad8\u8d44\u6e90\u5f00\u9500<\/strong>\uff1a\u9891\u7e41\u6293\u5305\u6216\u8f6e\u8be2\u4f1a\u5360\u7528\u5927\u91cfCPU\u548c\u5185\u5b58\u8d44\u6e90\uff1b\n<\/li>\n<li><strong>\u76f2\u70b9\u96be\u4ee5\u8986\u76d6<\/strong>\uff1a\u96be\u4ee5\u5b9e\u65f6\u8ffd\u8e2a\u77ed\u8fde\u63a5\u3001\u77ac\u65f6\u4e22\u5305\u7b49\u573a\u666f\uff1b\n<\/li>\n<li><strong>\u7075\u6d3b\u6027\u4e0d\u8db3<\/strong>\uff1a\u76d1\u63a7\u7b56\u7565\u8c03\u6574\u9700\u91cd\u542f\u670d\u52a1\u6216\u4fee\u6539\u914d\u7f6e\uff0c\u5f71\u54cd\u4e1a\u52a1\u8fde\u7eed\u6027\u3002\n<\/li>\n<\/ol>\n<p><strong>eBPF\u7684\u9769\u65b0\u6027\u5728\u4e8e\u5176\u80fd\u591f\u5728\u5185\u6838\u6001\u5b89\u5168\u5730\u6267\u884c\u7528\u6237\u5b9a\u4e49\u7684\u903b\u8f91<\/strong>\u3002\u901a\u8fc7\u5c06\u81ea\u5b9a\u4e49\u7a0b\u5e8f\u6ce8\u5165\u5230\u5185\u6838\u7684\u7f51\u7edc\u534f\u8bae\u6808\u4e2d\uff0ceBPF\u53ef\u4ee5\u5b9e\u65f6\u6355\u83b7\u6d41\u91cf\u3001\u5206\u6790\u534f\u8bae\u884c\u4e3a\uff0c\u751a\u81f3\u52a8\u6001\u8fc7\u6ee4\u65e0\u5173\u6570\u636e\u3002\u8fd9\u5927\u5e45\u964d\u4f4e\u4e86\u76d1\u63a7\u5bf9\u7cfb\u7edf\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u540c\u65f6\u5b9e\u73b0\u4e86\u7ec6\u7c92\u5ea6\u7684\u89c2\u6d4b\u80fd\u529b\u3002<\/p>\n<hr>\n<h3 id=\"\u4e8c-ebpf\u7684\u6838\u5fc3\u4f18\u52bf-\u4ece\u5185\u6838\u89c6\u89d2\u91cd\u6784\u76d1\u63a7\u903b\u8f91\"><strong>\u4e8c\u3001eBPF\u7684\u6838\u5fc3\u4f18\u52bf\uff1a\u4ece\u5185\u6838\u89c6\u89d2\u91cd\u6784\u76d1\u63a7\u903b\u8f91<\/strong><\/h3>\n<h4 id=\"1-\u96f6\u4fb5\u5165\u5f0f\u6570\u636e\u91c7\u96c6\"><strong>1. \u96f6\u4fb5\u5165\u5f0f\u6570\u636e\u91c7\u96c6<\/strong><\/h4>\n<p>\u4f20\u7edf\u76d1\u63a7\u5de5\u5177\u901a\u5e38\u9700\u8981\u5728\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u4e4b\u95f4\u9891\u7e41\u5207\u6362\uff08\u4f8b\u5982\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\uff09\uff0c\u800c<strong>eBPF\u7a0b\u5e8f\u76f4\u63a5\u8fd0\u884c\u5728\u5185\u6838\u6001<\/strong>\uff0c\u80fd\u591f\u4ee5\u8fd1\u4e4e\u96f6\u5f00\u9500\u7684\u65b9\u5f0f\u6355\u83b7\u7f51\u7edc\u4e8b\u4ef6\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u6302\u8f7d\u5230<code>tc<\/code>\uff08\u6d41\u91cf\u63a7\u5236\uff09\u5b50\u7cfb\u7edf\uff0ceBPF\u53ef\u4ee5\u76f4\u63a5\u62e6\u622a\u8fdb\u51fa\u7f51\u5361\u7684\u6570\u636e\u5305\uff0c\u5e76\u5b9e\u65f6\u7edf\u8ba1\u5ef6\u8fdf\u3001\u541e\u5410\u91cf\u7b49\u6307\u6807\u3002<\/p>\n<h4 id=\"2-\u52a8\u6001\u53ef\u7f16\u7a0b\u6027\"><strong>2. \u52a8\u6001\u53ef\u7f16\u7a0b\u6027<\/strong><\/h4>\n<p>eBPF\u652f\u6301\u5728\u4e0d\u91cd\u542f\u5185\u6838\u6216\u5e94\u7528\u7684\u60c5\u51b5\u4e0b\u52a8\u6001\u52a0\u8f7d\u7a0b\u5e8f\u3002\u8fd9\u610f\u5473\u7740\u8fd0\u7ef4\u56e2\u961f\u53ef\u4ee5\u6839\u636e\u4e1a\u52a1\u9700\u6c42\uff0c\u5b9e\u65f6\u8c03\u6574\u76d1\u63a7\u7b56\u7565\u3002\u4f8b\u5982\uff0c\u5f53\u68c0\u6d4b\u5230\u67d0\u670d\u52a1\u54cd\u5e94\u65f6\u95f4\u7a81\u589e\u65f6\uff0c\u53ef\u4ee5\u7acb\u5373\u6ce8\u5165\u4e00\u6bb5eBPF\u4ee3\u7801\uff0c\u8ffd\u8e2a\u7279\u5b9aTCP\u8fde\u63a5\u7684\u63e1\u624b\u8fc7\u7a0b\uff0c\u800c\u65e0\u9700\u4e2d\u65ad\u7ebf\u4e0a\u4e1a\u52a1\u3002<\/p>\n<h4 id=\"3-\u7cbe\u51c6\u7684\u4e0a\u4e0b\u6587\u5173\u8054\"><strong>3. \u7cbe\u51c6\u7684\u4e0a\u4e0b\u6587\u5173\u8054<\/strong><\/h4>\n<p>eBPF\u7a0b\u5e8f\u80fd\u591f\u8bbf\u95ee\u5185\u6838\u6570\u636e\u7ed3\u6784\u7684\u5b8c\u6574\u4e0a\u4e0b\u6587\u4fe1\u606f\u3002\u4ee5\u7f51\u7edc\u4e22\u5305\u5206\u6790\u4e3a\u4f8b\uff0c\u4f20\u7edf\u5de5\u5177\u53ef\u80fd\u4ec5\u80fd\u8bb0\u5f55\u4e22\u5305\u6570\u91cf\uff0c\u800c<strong>eBPF\u53ef\u4ee5\u6355\u83b7\u4e22\u5305\u65f6\u7684\u534f\u8bae\u72b6\u6001\uff08\u5982TCP\u91cd\u4f20\u6b21\u6570\uff09\u3001\u5173\u8054\u7684\u8fdb\u7a0bID\uff0c\u751a\u81f3\u89e6\u53d1\u4e22\u5305\u7684\u5185\u6838\u51fd\u6570\u8c03\u7528\u6808<\/strong>\u3002\u8fd9\u79cd\u6df1\u5ea6\u5173\u8054\u80fd\u529b\u4e3a<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">\u6839\u56e0\u5206\u6790<\/a>\u63d0\u4f9b\u4e86\u5173\u952e\u7ebf\u7d22\u3002<\/p>\n<hr>\n<h3 id=\"\u4e09-\u5b9e\u6218\u573a\u666f-\u7528ebpf\u6784\u5efa\u9ad8\u6548\u76d1\u63a7\u4f53\u7cfb\"><strong>\u4e09\u3001\u5b9e\u6218\u573a\u666f\uff1a\u7528eBPF\u6784\u5efa\u9ad8\u6548\u76d1\u63a7\u4f53\u7cfb<\/strong><\/h3>\n<h4 id=\"\u573a\u666f1-\u5b9e\u65f6\u5ef6\u8fdf\u5206\u6790\u4e0e\u62d3\u6251\u6620\u5c04\"><strong>\u573a\u666f1\uff1a\u5b9e\u65f6\u5ef6\u8fdf\u5206\u6790\u4e0e\u62d3\u6251\u6620\u5c04<\/strong><\/h4>\n<p>\u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\uff0c\u8bf7\u6c42\u53ef\u80fd\u8de8\u8d8a\u6570\u5341\u4e2a\u670d\u52a1\u8282\u70b9\uff0c\u4f20\u7edf\u76d1\u63a7\u5de5\u5177\u96be\u4ee5\u7cbe\u51c6\u5b9a\u4f4d\u5ef6\u8fdf\u74f6\u9888\u3002\u901a\u8fc7eBPF\u7684<strong>TCP\u8ddf\u8e2a\u70b9\uff08tracepoints\uff09<\/strong>\uff0c\u53ef\u4ee5\u6355\u83b7\u6bcf\u4e2aTCP\u8fde\u63a5\u7684\u63e1\u624b\u3001\u6570\u636e\u4f20\u8f93\u548c\u5173\u95ed\u4e8b\u4ef6\uff0c\u5e76\u5173\u8054\u5230\u5177\u4f53\u7684\u5bb9\u5668\u6216\u8fdb\u7a0b\u3002<\/p>\n<ul>\n<li><strong>\u6280\u672f\u5b9e\u73b0<\/strong>\uff1a\u5229\u7528<code>BPF_PROG_TYPE_TRACEPOINT<\/code>\u7c7b\u578b\u7a0b\u5e8f\uff0c\u6302\u8f7d\u5230<code>sock:inet_sock_set_state<\/code>\u7b49\u5185\u6838\u51fd\u6570\uff0c\u5b9e\u65f6\u8bb0\u5f55\u8fde\u63a5\u7684RTT\uff08\u5f80\u8fd4\u65f6\u95f4\uff09\u548c\u72b6\u6001\u53d8\u8fc1\u3002\n<\/li>\n<li><strong>\u4ef7\u503c\u4f53\u73b0<\/strong>\uff1a\u81ea\u52a8\u751f\u6210\u670d\u52a1\u4f9d\u8d56\u62d3\u6251\u56fe\uff0c\u5e76\u8bc6\u522b\u5f02\u5e38\u5ef6\u8fdf\u8282\u70b9\uff08\u5982\u67d0Redis\u5b9e\u4f8b\u768499\u5206\u4f4d\u54cd\u5e94\u65f6\u95f4\u8d85\u8fc7\u9608\u503c\uff09\u3002\n<\/li>\n<\/ul>\n<h4 id=\"\u573a\u666f2-\u5b89\u5168\u4e0e\u6027\u80fd\u7684\u4e00\u4f53\u5316\u76d1\u63a7\"><strong>\u573a\u666f2\uff1a\u5b89\u5168\u4e0e\u6027\u80fd\u7684\u4e00\u4f53\u5316\u76d1\u63a7<\/strong><\/h4>\n<p>eBPF\u4e0d\u4ec5\u9650\u4e8e\u6027\u80fd\u5206\u6790\u3002\u901a\u8fc7\u7ed3\u5408\u7f51\u7edc\u6d41\u91cf\u548c\u884c\u4e3a\u76d1\u63a7\uff0c\u53ef\u4ee5\u540c\u65f6\u68c0\u6d4bDDoS\u653b\u51fb\u3001\u5f02\u5e38\u7aef\u53e3\u626b\u63cf\u7b49\u5b89\u5168\u4e8b\u4ef6\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>\u9632\u5fa1\u6162\u901f\u653b\u51fb<\/strong>\uff1a\u6ce8\u5165eBPF\u7a0b\u5e8f\u7edf\u8ba1\u6bcf\u4e2aIP\u7684\u5e76\u53d1\u8fde\u63a5\u6570\u4e0e\u8bf7\u6c42\u901f\u7387\uff0c\u52a8\u6001\u62e6\u622a\u5f02\u5e38\u6d41\u91cf\uff1b\n<\/li>\n<li><strong>\u534f\u8bae\u5408\u89c4\u6027\u68c0\u67e5<\/strong>\uff1a\u5728HTTP\/2\u5c42\u89e3\u6790\u8bf7\u6c42\u5934\uff0c\u5b9e\u65f6\u963b\u65ad\u4e0d\u7b26\u5408\u89c4\u8303\u7684API\u8c03\u7528\u3002\n<\/li>\n<\/ul>\n<h4 id=\"\u573a\u666f3-\u8d44\u6e90\u6d88\u8017\u7684\u7cbe\u7ec6\u5316\u63a7\u5236\"><strong>\u573a\u666f3\uff1a\u8d44\u6e90\u6d88\u8017\u7684\u7cbe\u7ec6\u5316\u63a7\u5236<\/strong><\/h4>\n<p>\u5728Kubernetes\u96c6\u7fa4\u4e2d\uff0ceBPF\u53ef\u7528\u4e8e\u5b9e\u73b0<strong>\u57fa\u4e8e\u5bb9\u5668\u7684\u7f51\u7edc\u6d41\u91cf\u914d\u989d\u7ba1\u7406<\/strong>\u3002\u901a\u8fc7\u5728\u5185\u6838\u6001\u7edf\u8ba1\u6bcf\u4e2aPod\u7684\u51fa\u5165\u5e26\u5bbd\uff0c\u5e76\u7ed3\u5408Cilium\u7b49\u5de5\u5177\uff0c\u53ef\u4ee5\u52a8\u6001\u9650\u5236\u8d85\u51fa\u914d\u989d\u7684\u5bb9\u5668\u6d41\u91cf\uff0c\u907f\u514d\u8d44\u6e90\u4e89\u62a2\u5bfc\u81f4\u7684\u6027\u80fd\u6ce2\u52a8\u3002<\/p>\n<hr>\n<h3 id=\"\u56db-\u5173\u952e\u6280\u672f\u70b9\u4e0e\u6700\u4f73\u5b9e\u8df5\"><strong>\u56db\u3001\u5173\u952e\u6280\u672f\u70b9\u4e0e\u6700\u4f73\u5b9e\u8df5<\/strong><\/h3>\n<h4 id=\"1-\u9009\u62e9\u5408\u9002\u7684ebpf\u524d\u7aef\u5de5\u5177\"><strong>1. \u9009\u62e9\u5408\u9002\u7684eBPF\u524d\u7aef\u5de5\u5177<\/strong><\/h4>\n<ul>\n<li><strong>BCC\uff08BPF Compiler Collection\uff09<\/strong>\uff1a\u9002\u5408\u5feb\u901f\u539f\u578b\u5f00\u53d1\uff0c\u63d0\u4f9bPython\/Lua\u7b49\u9ad8\u7ea7\u8bed\u8a00\u63a5\u53e3\uff1b\n<\/li>\n<li><strong>libbpf<\/strong>\uff1a\u5f3a\u8c03\u751f\u4ea7\u73af\u5883\u7a33\u5b9a\u6027\uff0c\u652f\u6301CO-RE\uff08Compile Once \u2013 Run Everywhere\uff09\u7279\u6027\uff0c\u907f\u514d\u5185\u6838\u7248\u672c\u517c\u5bb9\u6027\u95ee\u9898\uff1b\n<\/li>\n<li><strong>Cilium\/eBPF<\/strong>\uff1a\u9762\u5411\u4e91\u539f\u751f\u573a\u666f\uff0c\u63d0\u4f9b\u5f00\u7bb1\u5373\u7528\u7684\u7f51\u7edc\u7b56\u7565\u4e0e\u76d1\u63a7\u80fd\u529b\u3002\n<\/li>\n<\/ul>\n<h4 id=\"2-\u907f\u514d\u5e38\u89c1\u6027\u80fd\u9677\u9631\"><strong>2. \u907f\u514d\u5e38\u89c1\u6027\u80fd\u9677\u9631<\/strong><\/h4>\n<ul>\n<li><strong>\u9650\u5236\u4e8b\u4ef6\u9891\u7387<\/strong>\uff1a\u901a\u8fc7\u91c7\u6837\u6216\u805a\u5408\u51cf\u5c11\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u7684\u6570\u636e\u4f20\u9012\u6b21\u6570\uff1b\n<\/li>\n<li><strong>\u4f18\u5316Map\u6570\u636e\u7ed3\u6784<\/strong>\uff1a\u6839\u636e\u573a\u666f\u9009\u62e9\u54c8\u5e0c\u8868\u3001LRU\u7f13\u5b58\u6216\u73af\u5f62\u7f13\u51b2\u533a\uff0c\u964d\u4f4e\u9501\u7ade\u4e89\uff1b\n<\/li>\n<li><strong>\u7981\u7528\u975e\u5fc5\u8981\u529f\u80fd<\/strong>\uff1a\u4f8b\u5982\u5728\u4ec5\u9700\u7edf\u8ba1\u6307\u6807\u65f6\uff0c\u5173\u95ed\u5806\u6808\u8ddf\u8e2a\u529f\u80fd\u4ee5\u8282\u7701\u8d44\u6e90\u3002\n<\/li>\n<\/ul>\n<h4 id=\"3-\u4e0e\u73b0\u6709\u76d1\u63a7\u751f\u6001\u96c6\u6210\"><strong>3. \u4e0e\u73b0\u6709\u76d1\u63a7\u751f\u6001\u96c6\u6210<\/strong><\/h4>\n<p>eBPF\u5e76\u975e\u8981\u53d6\u4ee3Prometheus\u3001Grafana\u7b49\u6210\u719f\u5de5\u5177\uff0c\u800c\u662f\u4e0e\u5176\u4e92\u8865\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u5c06eBPF\u91c7\u96c6\u7684\u6307\u6807\u901a\u8fc7OpenTelemetry\u5bfc\u51fa\uff0c\u63a5\u5165\u7edf\u4e00\u7684<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">\u53ef\u89c2\u6d4b\u6027\u5e73\u53f0<\/a>\uff1b\n<\/li>\n<li>\u5229\u7528Grafana\u7684\u63d2\u4ef6\u673a\u5236\uff0c\u53ef\u89c6\u5316eBPF\u751f\u6210\u7684\u706b\u7130\u56fe\u6216\u62d3\u6251\u5173\u7cfb\u3002\n<\/li>\n<\/ul>\n<hr>\n<h3 id=\"\u4e94-\u672a\u6765\u5c55\u671b-ebpf\u5982\u4f55\u91cd\u65b0\u5b9a\u4e49\u53ef\u89c2\u6d4b\u6027\"><strong>\u4e94\u3001\u672a\u6765\u5c55\u671b\uff1aeBPF\u5982\u4f55\u91cd\u65b0\u5b9a\u4e49\u53ef\u89c2\u6d4b\u6027<\/strong><\/h3>\n<p>\u968f\u7740\u5185\u6838\u529f\u80fd\u7684\u6301\u7eed\u589e\u5f3a\uff08\u5982eBPF\u5bf9\u7528\u6237\u6001\u8ddf\u8e2a\u7684\u652f\u6301\uff09\uff0c\u5176\u5e94\u7528\u573a\u666f\u5c06\u8fdb\u4e00\u6b65\u6269\u5c55\u3002\u4e00\u4e2a\u5178\u578b\u7684\u8d8b\u52bf\u662f<strong>\u5c06\u6027\u80fd\u76d1\u63a7\u4e0eAIOps\u7ed3\u5408<\/strong>\uff1a\u901a\u8fc7eBPF\u5b9e\u65f6\u91c7\u96c6\u9ad8\u7ef4\u6307\u6807\uff0c\u8bad\u7ec3\u673a\u5668\u5b66\u4e60\u6a21\u578b\u9884\u6d4b\u7f51\u7edc\u62e5\u585e\u6216\u6545\u969c\u3002\u6b64\u5916\uff0ceBPF\u6b63\u5728\u6210\u4e3a\u4e91\u670d\u52a1\u5546\u7684\u5dee\u5f02\u5316\u7ade\u4e89\u70b9\u2014\u2014AWS\u3001Google Cloud\u7b49\u5747\u5df2\u63a8\u51fa\u57fa\u4e8eeBPF\u7684\u6258\u7ba1\u76d1\u63a7\u670d\u52a1\uff0c\u5e2e\u52a9\u4f01\u4e1a\u964d\u4f4e\u8fd0\u7ef4\u590d\u6742\u5ea6\u3002<\/p>\n<p>\u5bf9\u4e8e\u6280\u672f\u56e2\u961f\u800c\u8a00\uff0c\u62e5\u62b1eBPF\u4e0d\u4ec5\u610f\u5473\u7740\u76d1\u63a7\u6548\u80fd\u7684\u63d0\u5347\uff0c\u66f4\u662f\u5bf9\u5e95\u5c42\u7cfb\u7edf\u7406\u89e3\u6df1\u5ea6\u7684\u8dc3\u8fc1\u3002\u6b63\u5982Linux\u5185\u6838\u5f00\u53d1\u8005Brendan Gregg\u6240\u8bf4\uff1a<strong>\u201ceBPF\u8ba9\u5185\u6838\u53d8\u5f97\u53ef\u7f16\u7a0b\uff0c\u8fd9\u662f\u64cd\u4f5c\u7cfb\u7edf\u9886\u57df\u8fd1\u4e8c\u5341\u5e74\u6700\u5177\u9769\u547d\u6027\u7684\u53d8\u5316\u4e4b\u4e00\u3002\u201d<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u5728\u4e91\u8ba1\u7b97\u4e0e\u5fae\u670d\u52a1\u67b6\u6784\u4e3b\u5bfc\u7684\u6570\u5b57\u5316\u65f6\u4ee3\uff0c\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\u5df2\u6210\u4e3a\u4f01\u4e1a\u4fdd\u969c\u4e1a\u52a1\u8fde\u7eed\u6027\u7684\u6838\u5fc3\u9700\u6c42\u3002\u4f20\u7edf\u7684\u76d1\u63a7\u5de5\u5177\u5f80\u5f80\u9762\u4e34\u6570\u636e\u91c7\u96c6\u6548\u7387\u4f4e\u3001\u8d44\u6e90\u6d88\u8017\u9ad8\u3001\u7075\u6d3b\u6027\u4e0d\u8db3\u7b49\u95ee\u9898\u3002\u800ceBPF\uff08Extended Berkeley Packet Filter\uff09\u6280\u672f\u7684\u5d1b\u8d77\uff0c\u4e3a\u89e3\u51b3\u8fd9\u4e9b\u75db\u70b9\u63d0\u4f9b\u4e86\u5168\u65b0\u7684\u601d\u8def\u3002\u901a\u8fc7\u52a8\u6001\u8ffd\u8e2a\u5185\u6838\u4e0e\u7528\u6237\u6001\u7a0b\u5e8f\u7684\u4ea4\u4e92\uff0ceBPF\u4e0d\u4ec5\u80fd\u5b9e\u73b0\u96f6\u4fb5\u5165\u5f0f\u89c2\u6d4b\uff0c\u8fd8\u80fd\u5c06\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\u7684\u7cbe\u5ea6\u548c\u6548\u7387\u63d0\u5347\u5230\u65b0\u7684\u7ef4\u5ea6\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u5982\u4f55\u5229\u7528eBPF\u6280\u672f\u6784\u5efa\u9ad8\u6548\u3001\u4f4e\u6210\u672c\u7684\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\u4f53\u7cfb\uff0c\u5e76\u63ed\u793a\u5176\u5728\u5b9e\u9645\u573a\u666f\u4e2d\u7684\u5173\u952e\u4ef7\u503c\u3002 \u4e00\u3001\u4f20\u7edf\u7f51\u7edc\u76d1\u63a7\u7684\u74f6\u9888\u4e0eeBPF\u7684\u9769\u65b0\u6027 \u5728\u6df1\u5165\u8ba8\u8bbaeBPF\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u660e\u786e\u4f20\u7edf\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\u7684\u5c40\u9650\u3002\u5e38\u89c1\u7684\u5de5\u5177\u5982tcpdump\u3001netstat\u6216\u57fa\u4e8eSNMP\u7684\u65b9\u6848\uff0c\u901a\u5e38\u4f9d\u8d56\u5468\u671f\u6027\u7684\u6570\u636e\u91c7\u6837\u6216\u5b8c\u6574\u7684\u6570\u636e\u5305\u6355\u83b7\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u80fd\u5bfc\u81f4\u4ee5\u4e0b\u95ee\u9898\uff1a \u9ad8\u8d44\u6e90\u5f00\u9500\uff1a\u9891\u7e41\u6293\u5305\u6216\u8f6e\u8be2\u4f1a\u5360\u7528\u5927\u91cfCPU\u548c\u5185\u5b58\u8d44\u6e90\uff1b \u76f2\u70b9\u96be\u4ee5\u8986\u76d6\uff1a\u96be\u4ee5\u5b9e\u65f6\u8ffd\u8e2a\u77ed\u8fde\u63a5\u3001\u77ac\u65f6\u4e22\u5305\u7b49\u573a\u666f\uff1b \u7075\u6d3b\u6027\u4e0d\u8db3\uff1a\u76d1\u63a7\u7b56\u7565\u8c03\u6574\u9700\u91cd\u542f\u670d\u52a1\u6216\u4fee\u6539\u914d\u7f6e\uff0c\u5f71\u54cd\u4e1a\u52a1\u8fde\u7eed\u6027\u3002 eBPF\u7684\u9769\u65b0\u6027\u5728\u4e8e\u5176\u80fd\u591f\u5728\u5185\u6838\u6001\u5b89\u5168\u5730\u6267\u884c\u7528\u6237\u5b9a\u4e49\u7684\u903b\u8f91\u3002\u901a\u8fc7\u5c06\u81ea\u5b9a\u4e49\u7a0b\u5e8f\u6ce8\u5165\u5230\u5185\u6838\u7684\u7f51\u7edc\u534f\u8bae\u6808\u4e2d\uff0ceBPF\u53ef\u4ee5\u5b9e\u65f6\u6355\u83b7\u6d41\u91cf\u3001\u5206\u6790\u534f\u8bae\u884c\u4e3a\uff0c\u751a\u81f3\u52a8\u6001\u8fc7\u6ee4\u65e0\u5173\u6570\u636e\u3002\u8fd9\u5927\u5e45\u964d\u4f4e\u4e86\u76d1\u63a7\u5bf9\u7cfb\u7edf\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u540c\u65f6\u5b9e\u73b0\u4e86\u7ec6\u7c92\u5ea6\u7684\u89c2\u6d4b\u80fd\u529b\u3002 \u4e8c\u3001eBPF\u7684\u6838\u5fc3\u4f18\u52bf\uff1a\u4ece\u5185\u6838\u89c6\u89d2\u91cd\u6784\u76d1\u63a7\u903b\u8f91 1. \u96f6\u4fb5\u5165\u5f0f\u6570\u636e\u91c7\u96c6 \u4f20\u7edf\u76d1\u63a7\u5de5\u5177\u901a\u5e38\u9700\u8981\u5728\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u4e4b\u95f4\u9891\u7e41\u5207\u6362\uff08\u4f8b\u5982\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\uff09\uff0c\u800ceBPF\u7a0b\u5e8f\u76f4\u63a5\u8fd0\u884c\u5728\u5185\u6838\u6001\uff0c\u80fd\u591f\u4ee5\u8fd1\u4e4e\u96f6\u5f00\u9500\u7684\u65b9\u5f0f\u6355\u83b7\u7f51\u7edc\u4e8b\u4ef6\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u6302\u8f7d\u5230tc\uff08\u6d41\u91cf\u63a7\u5236\uff09\u5b50\u7cfb\u7edf\uff0ceBPF\u53ef\u4ee5\u76f4\u63a5\u62e6\u622a\u8fdb\u51fa\u7f51\u5361\u7684\u6570\u636e\u5305\uff0c\u5e76\u5b9e\u65f6\u7edf\u8ba1\u5ef6\u8fdf\u3001\u541e\u5410\u91cf\u7b49\u6307\u6807\u3002 2. \u52a8\u6001\u53ef\u7f16\u7a0b\u6027 eBPF\u652f\u6301\u5728\u4e0d\u91cd\u542f\u5185\u6838\u6216\u5e94\u7528\u7684\u60c5\u51b5\u4e0b\u52a8\u6001\u52a0\u8f7d\u7a0b\u5e8f\u3002\u8fd9\u610f\u5473\u7740\u8fd0\u7ef4\u56e2\u961f\u53ef\u4ee5\u6839\u636e\u4e1a\u52a1\u9700\u6c42\uff0c\u5b9e\u65f6\u8c03\u6574\u76d1\u63a7\u7b56\u7565\u3002\u4f8b\u5982\uff0c\u5f53\u68c0\u6d4b\u5230\u67d0\u670d\u52a1\u54cd\u5e94\u65f6\u95f4\u7a81\u589e\u65f6\uff0c\u53ef\u4ee5\u7acb\u5373\u6ce8\u5165\u4e00\u6bb5eBPF\u4ee3\u7801\uff0c\u8ffd\u8e2a\u7279\u5b9aTCP\u8fde\u63a5\u7684\u63e1\u624b\u8fc7\u7a0b\uff0c\u800c\u65e0\u9700\u4e2d\u65ad\u7ebf\u4e0a\u4e1a\u52a1\u3002 3. \u7cbe\u51c6\u7684\u4e0a\u4e0b\u6587\u5173\u8054 eBPF\u7a0b\u5e8f\u80fd\u591f\u8bbf\u95ee\u5185\u6838\u6570\u636e\u7ed3\u6784\u7684\u5b8c\u6574\u4e0a\u4e0b\u6587\u4fe1\u606f\u3002\u4ee5\u7f51\u7edc\u4e22\u5305\u5206\u6790\u4e3a\u4f8b\uff0c\u4f20\u7edf\u5de5\u5177\u53ef\u80fd\u4ec5\u80fd\u8bb0\u5f55\u4e22\u5305\u6570\u91cf\uff0c\u800ceBPF\u53ef\u4ee5\u6355\u83b7\u4e22\u5305\u65f6\u7684\u534f\u8bae\u72b6\u6001\uff08\u5982TCP\u91cd\u4f20\u6b21\u6570\uff09\u3001\u5173\u8054\u7684\u8fdb\u7a0bID\uff0c\u751a\u81f3\u89e6\u53d1\u4e22\u5305\u7684\u5185\u6838\u51fd\u6570\u8c03\u7528\u6808\u3002\u8fd9\u79cd\u6df1\u5ea6\u5173\u8054\u80fd\u529b\u4e3a\u6839\u56e0\u5206\u6790\u63d0\u4f9b\u4e86\u5173\u952e\u7ebf\u7d22\u3002 \u4e09\u3001\u5b9e\u6218\u573a\u666f\uff1a\u7528eBPF\u6784\u5efa\u9ad8\u6548\u76d1\u63a7\u4f53\u7cfb \u573a\u666f1\uff1a\u5b9e\u65f6\u5ef6\u8fdf\u5206\u6790\u4e0e\u62d3\u6251\u6620\u5c04 \u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\uff0c\u8bf7\u6c42\u53ef\u80fd\u8de8\u8d8a\u6570\u5341\u4e2a\u670d\u52a1\u8282\u70b9\uff0c\u4f20\u7edf\u76d1\u63a7\u5de5\u5177\u96be\u4ee5\u7cbe\u51c6\u5b9a\u4f4d\u5ef6\u8fdf\u74f6\u9888\u3002\u901a\u8fc7eBPF\u7684TCP\u8ddf\u8e2a\u70b9\uff08tracepoints\uff09\uff0c\u53ef\u4ee5\u6355\u83b7\u6bcf\u4e2aTCP\u8fde\u63a5\u7684\u63e1\u624b\u3001\u6570\u636e\u4f20\u8f93\u548c\u5173\u95ed\u4e8b\u4ef6\uff0c\u5e76\u5173\u8054\u5230\u5177\u4f53\u7684\u5bb9\u5668\u6216\u8fdb\u7a0b\u3002 \u6280\u672f\u5b9e\u73b0\uff1a\u5229\u7528BPF_PROG_TYPE_TRACEPOINT\u7c7b\u578b\u7a0b\u5e8f\uff0c\u6302\u8f7d\u5230sock:inet_sock_set_state\u7b49\u5185\u6838\u51fd\u6570\uff0c\u5b9e\u65f6\u8bb0\u5f55\u8fde\u63a5\u7684RTT\uff08\u5f80\u8fd4\u65f6\u95f4\uff09\u548c\u72b6\u6001\u53d8\u8fc1\u3002 \u4ef7\u503c\u4f53\u73b0\uff1a\u81ea\u52a8\u751f\u6210\u670d\u52a1\u4f9d\u8d56\u62d3\u6251\u56fe\uff0c\u5e76\u8bc6\u522b\u5f02\u5e38\u5ef6\u8fdf\u8282\u70b9\uff08\u5982\u67d0Redis\u5b9e\u4f8b\u768499\u5206\u4f4d\u54cd\u5e94\u65f6\u95f4\u8d85\u8fc7\u9608\u503c\uff09\u3002 \u573a\u666f2\uff1a\u5b89\u5168\u4e0e\u6027\u80fd\u7684\u4e00\u4f53\u5316\u76d1\u63a7 eBPF\u4e0d\u4ec5\u9650\u4e8e\u6027\u80fd\u5206\u6790\u3002\u901a\u8fc7\u7ed3\u5408\u7f51\u7edc\u6d41\u91cf\u548c\u884c\u4e3a\u76d1\u63a7\uff0c\u53ef\u4ee5\u540c\u65f6\u68c0\u6d4bDDoS\u653b\u51fb\u3001\u5f02\u5e38\u7aef\u53e3\u626b\u63cf\u7b49\u5b89\u5168\u4e8b\u4ef6\u3002\u4f8b\u5982\uff1a \u9632\u5fa1\u6162\u901f\u653b\u51fb\uff1a\u6ce8\u5165eBPF\u7a0b\u5e8f\u7edf\u8ba1\u6bcf\u4e2aIP\u7684\u5e76\u53d1\u8fde\u63a5\u6570\u4e0e\u8bf7\u6c42\u901f\u7387\uff0c\u52a8\u6001\u62e6\u622a\u5f02\u5e38\u6d41\u91cf\uff1b \u534f\u8bae\u5408\u89c4\u6027\u68c0\u67e5\uff1a\u5728HTTP\/2\u5c42\u89e3\u6790\u8bf7\u6c42\u5934\uff0c\u5b9e\u65f6\u963b\u65ad\u4e0d\u7b26\u5408\u89c4\u8303\u7684API\u8c03\u7528\u3002 \u573a\u666f3\uff1a\u8d44\u6e90\u6d88\u8017\u7684\u7cbe\u7ec6\u5316\u63a7\u5236 \u5728Kubernetes\u96c6\u7fa4\u4e2d\uff0ceBPF\u53ef\u7528\u4e8e\u5b9e\u73b0\u57fa\u4e8e\u5bb9\u5668\u7684\u7f51\u7edc\u6d41\u91cf\u914d\u989d\u7ba1\u7406\u3002\u901a\u8fc7\u5728\u5185\u6838\u6001\u7edf\u8ba1\u6bcf\u4e2aPod\u7684\u51fa\u5165\u5e26\u5bbd\uff0c\u5e76\u7ed3\u5408Cilium\u7b49\u5de5\u5177\uff0c\u53ef\u4ee5\u52a8\u6001\u9650\u5236\u8d85\u51fa\u914d\u989d\u7684\u5bb9\u5668\u6d41\u91cf\uff0c\u907f\u514d\u8d44\u6e90\u4e89\u62a2\u5bfc\u81f4\u7684\u6027\u80fd\u6ce2\u52a8\u3002 \u56db\u3001\u5173\u952e\u6280\u672f\u70b9\u4e0e\u6700\u4f73\u5b9e\u8df5 1. \u9009\u62e9\u5408\u9002\u7684eBPF\u524d\u7aef\u5de5\u5177 BCC\uff08BPF Compiler Collection\uff09\uff1a\u9002\u5408\u5feb\u901f\u539f\u578b\u5f00\u53d1\uff0c\u63d0\u4f9bPython\/Lua\u7b49\u9ad8\u7ea7\u8bed\u8a00\u63a5\u53e3\uff1b libbpf\uff1a\u5f3a\u8c03\u751f\u4ea7\u73af\u5883\u7a33\u5b9a\u6027\uff0c\u652f\u6301CO-RE\uff08Compile Once \u2013 Run Everywhere\uff09\u7279\u6027\uff0c\u907f\u514d\u5185\u6838\u7248\u672c\u517c\u5bb9\u6027\u95ee\u9898\uff1b Cilium\/eBPF\uff1a\u9762\u5411\u4e91\u539f\u751f\u573a\u666f\uff0c\u63d0\u4f9b\u5f00\u7bb1\u5373\u7528\u7684\u7f51\u7edc\u7b56\u7565\u4e0e\u76d1\u63a7\u80fd\u529b\u3002 2. \u907f\u514d\u5e38\u89c1\u6027\u80fd\u9677\u9631 \u9650\u5236\u4e8b\u4ef6\u9891\u7387\uff1a\u901a\u8fc7\u91c7\u6837\u6216\u805a\u5408\u51cf\u5c11\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u7684\u6570\u636e\u4f20\u9012\u6b21\u6570\uff1b \u4f18\u5316Map\u6570\u636e\u7ed3\u6784\uff1a\u6839\u636e\u573a\u666f\u9009\u62e9\u54c8\u5e0c\u8868\u3001LRU\u7f13\u5b58\u6216\u73af\u5f62\u7f13\u51b2\u533a\uff0c\u964d\u4f4e\u9501\u7ade\u4e89\uff1b \u7981\u7528\u975e\u5fc5\u8981\u529f\u80fd\uff1a\u4f8b\u5982\u5728\u4ec5\u9700\u7edf\u8ba1\u6307\u6807\u65f6\uff0c\u5173\u95ed\u5806\u6808\u8ddf\u8e2a\u529f\u80fd\u4ee5\u8282\u7701\u8d44\u6e90\u3002 3. \u4e0e\u73b0\u6709\u76d1\u63a7\u751f\u6001\u96c6\u6210 eBPF\u5e76\u975e\u8981\u53d6\u4ee3Prometheus\u3001Grafana\u7b49\u6210\u719f\u5de5\u5177\uff0c\u800c\u662f\u4e0e\u5176\u4e92\u8865\u3002\u4f8b\u5982\uff1a \u5c06eBPF\u91c7\u96c6\u7684\u6307\u6807\u901a\u8fc7OpenTelemetry\u5bfc\u51fa\uff0c\u63a5\u5165\u7edf\u4e00\u7684\u53ef\u89c2\u6d4b\u6027\u5e73\u53f0\uff1b \u5229\u7528Grafana\u7684\u63d2\u4ef6\u673a\u5236\uff0c\u53ef\u89c6\u5316eBPF\u751f\u6210\u7684\u706b\u7130\u56fe\u6216\u62d3\u6251\u5173\u7cfb\u3002 \u4e94\u3001\u672a\u6765\u5c55\u671b\uff1aeBPF\u5982\u4f55\u91cd\u65b0\u5b9a\u4e49\u53ef\u89c2\u6d4b\u6027 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":32622,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-32621","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/32621","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=32621"}],"version-history":[{"count":1,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/32621\/revisions"}],"predecessor-version":[{"id":32623,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/32621\/revisions\/32623"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/32622"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=32621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=32621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=32621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}