{"id":5732,"date":"2024-08-27T14:23:21","date_gmt":"2024-08-27T06:23:21","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=5732"},"modified":"2024-08-27T14:23:21","modified_gmt":"2024-08-27T06:23:21","slug":"%e7%a0%94%e7%a9%b6ebpf%e5%af%b9%e7%bd%91%e7%bb%9c%e5%8d%8f%e8%ae%ae%e5%88%86%e6%9e%90%e4%b8%8e%e4%bc%98%e5%8c%96%e7%9a%84%e9%87%8d%e8%a6%81%e6%8e%a8%e5%8a%a8%e4%bd%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/5732.html","title":{"rendered":"\u7814\u7a76eBPF\u5bf9\u7f51\u7edc\u534f\u8bae\u5206\u6790\u4e0e\u4f18\u5316\u7684\u91cd\u8981\u63a8\u52a8\u4f5c\u7528"},"content":{"rendered":"

\t\t\t\t<\/p>\n\n<\/p>\n\n\n\n

\u3000\u3000\u7814\u7a76eBPF<\/a>\u5bf9\u7f51\u7edc\u534f\u8bae\u5206\u6790\u4e0e\u4f18\u5316\u7684\u91cd\u8981\u63a8\u52a8\u4f5c\u7528<\/p>\n\n\n\n\n

\u3000\u3000\u5728\u5f53\u4eca\u6570\u5b57\u5316\u9ad8\u901f\u53d1\u5c55\u7684\u65f6\u4ee3\uff0c\u7f51\u7edc\u7684\u590d\u6742\u6027\u548c\u89c4\u6a21\u4e0d\u65ad\u589e\u52a0\uff0c\u5bf9\u4e8e\u7f51\u7edc\u534f\u8bae\u7684\u9ad8\u6548\u5206\u6790\u4e0e\u4f18\u5316\u6210\u4e3a\u4e86\u4fdd\u969c\u7f51\u7edc\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u7684\u5173\u952e\u3002eBPF<\/a>\uff08ExtendedBerkeleyPacketFilter\uff09\u4f5c\u4e3a\u4e00\u9879\u524d\u6cbf\u6280\u672f\uff0c\u6b63\u4ee5\u5176\u5f3a\u5927\u7684\u529f\u80fd\u548c\u521b\u65b0\u7684\u5e94\u7528\u65b9\u5f0f\uff0c\u4e3a\u7f51\u7edc\u534f\u8bae\u7684\u5206\u6790\u4e0e\u4f18\u5316\u5e26\u6765\u4e86\u91cd\u8981\u7684\u63a8\u52a8\u4f5c\u7528\u3002\u4e91\u6749\u7f51\u7edc<\/strong>\u4f5c\u4e3a\u7f51\u7edc\u9886\u57df\u7684\u521b\u65b0\u8005\uff0c\u4e5f\u5728\u79ef\u6781\u63a2\u7d22\u548c\u5e94\u7528eBPF<\/a>\u6280\u672f\uff0c\u4e3a\u7528\u6237\u63d0\u4f9b\u66f4\u5353\u8d8a\u7684\u7f51\u7edc\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n\n\n\n\n

\u3000\u3000\u4e00\u3001eBPF\u6280\u672f\u7b80\u4ecb<\/strong><\/p>\n\n\n\n\n

\u3000\u3000eBPF\u662f\u4e00\u79cd\u9769\u547d\u6027\u7684\u5185\u6838\u6280\u672f\uff0c\u5b83\u5141\u8bb8\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u4e2d\u8fd0\u884c\u7528\u6237\u5b9a\u4e49\u7684\u7a0b\u5e8f\u3002\u4f20\u7edf\u7684\u7f51\u7edc\u76d1\u6d4b\u548c\u5206\u6790\u5de5\u5177\u5f80\u5f80\u9700\u8981\u5728\u7528\u6237\u7a7a\u95f4\u548c\u5185\u6838\u7a7a\u95f4\u4e4b\u95f4\u8fdb\u884c\u9891\u7e41\u7684\u6570\u636e\u62f7\u8d1d\uff0c\u5bfc\u81f4\u6027\u80fd\u5f00\u9500\u8f83\u5927\u3002\u800ceBPF\u80fd\u591f\u5728\u5185\u6838\u4e2d\u76f4\u63a5\u6267\u884c\u7279\u5b9a\u7684\u7a0b\u5e8f\u903b\u8f91\uff0c\u5927\u5927\u51cf\u5c11\u4e86\u6570\u636e\u7684\u62f7\u8d1d\u548c\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u4ece\u800c\u663e\u8457\u63d0\u9ad8\u4e86\u6027\u80fd\u3002<\/p>\n\n\n\n\n

\u3000\u3000eBPF\u7a0b\u5e8f\u53ef\u4ee5\u88ab\u52a0\u8f7d\u5230\u5185\u6838\u4e2d\uff0c\u6302\u94a9\u5230\u7279\u5b9a\u7684\u5185\u6838\u4e8b\u4ef6\u3001\u51fd\u6570\u5165\u53e3\u548c\u51fa\u53e3\u7b49\u4f4d\u7f6e\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9\u7f51\u7edc\u6570\u636e\u5305\u3001\u7cfb\u7edf\u8c03\u7528\u3001\u5185\u6838\u51fd\u6570\u7b49\u7684\u5b9e\u65f6\u76d1\u6d4b\u548c\u5904\u7406\u3002\u8fd9\u79cd\u7075\u6d3b\u6027\u4f7f\u5f97eBPF\u80fd\u591f\u5e94\u7528\u4e8e\u5404\u79cd\u573a\u666f\uff0c\u5305\u62ec\u7f51\u7edc\u534f\u8bae\u5206\u6790\u3001\u6027\u80fd\u4f18\u5316\u3001\u5b89\u5168\u76d1\u6d4b\u7b49\u3002<\/p>\n\n\n\n\n

\u3000\u3000\u4e8c\u3001eBPF\u5728\u7f51\u7edc\u534f\u8bae\u5206\u6790\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n\n\n\n\n

    \n\n\n
  1. \n\n

    \u3000\u3000\u6570\u636e\u5305\u6355\u83b7\u4e0e\u8fc7\u6ee4
    \neBPF\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u9ad8\u6548\u7684\u6570\u636e\u5305\u6355\u83b7\u548c\u8fc7\u6ee4\u3002\u4f20\u7edf\u7684\u6570\u636e\u5305\u6355\u83b7\u5de5\u5177\u5982tcpdump\u53ef\u80fd\u4f1a\u56e0\u4e3a\u5927\u91cf\u7684\u6570\u636e\u62f7\u8d1d\u548c\u5904\u7406\u800c\u5bfc\u81f4\u6027\u80fd\u74f6\u9888\u3002\u800c\u901a\u8fc7eBPF\uff0c\u53ef\u4ee5\u5728\u5185\u6838\u4e2d\u76f4\u63a5\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u8fc7\u6ee4\u548c\u7b5b\u9009\uff0c\u53ea\u5c06\u611f\u5174\u8da3\u7684\u6570\u636e\u5305\u4f20\u9012\u5230\u7528\u6237\u7a7a\u95f4\u8fdb\u884c\u8fdb\u4e00\u6b65\u5904\u7406\uff0c\u5927\u5927\u51cf\u5c11\u4e86\u6570\u636e\u91cf\u548c\u5904\u7406\u65f6\u95f4\u3002<\/p>\n\n\n<\/li>\n\n\n\n\n

  2. \n\n

    \u3000\u3000\u534f\u8bae\u5b57\u6bb5\u89e3\u6790
    \n\u5bf9\u4e8e\u590d\u6742\u7684\u7f51\u7edc\u534f\u8bae\uff0ceBPF\u53ef\u4ee5\u76f4\u63a5\u5728\u5185\u6838\u4e2d\u89e3\u6790\u534f\u8bae\u5b57\u6bb5\uff0c\u63d0\u53d6\u5173\u952e\u4fe1\u606f\u3002\u8fd9\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u89e3\u6790\u7684\u901f\u5ea6\uff0c\u8fd8\u80fd\u591f\u5b9e\u65f6\u83b7\u53d6\u6700\u65b0\u7684\u534f\u8bae\u6570\u636e\uff0c\u4e3a\u7f51\u7edc\u534f\u8bae\u7684\u5206\u6790\u63d0\u4f9b\u4e86\u66f4\u53ca\u65f6\u548c\u51c6\u786e\u7684\u4fe1\u606f\u3002<\/p>\n\n\n<\/li>\n\n\n\n\n

  3. \n\n

    \u3000\u3000\u6d41\u8ddf\u8e2a\u4e0e\u5206\u6790
    \n\u901a\u8fc7eBPF\uff0c\u53ef\u4ee5\u5bf9\u7f51\u7edc\u6d41\u8fdb\u884c\u5b9e\u65f6\u8ddf\u8e2a\u548c\u5206\u6790\uff0c\u4e86\u89e3\u6570\u636e\u5305\u7684\u6d41\u5411\u3001\u6d41\u91cf\u5206\u5e03\u7b49\u3002\u8fd9\u5bf9\u4e8e\u8bc6\u522b\u7f51\u7edc\u4e2d\u7684\u5f02\u5e38\u6d41\u91cf\u3001\u4f18\u5316\u7f51\u7edc\u62d3\u6251\u7ed3\u6784\u4ee5\u53ca\u4fdd\u969c\u670d\u52a1\u8d28\u91cf\u90fd\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n\n\n<\/li>\n\n\n<\/ol>\n\n\n\n\n

    \u3000\u3000\u4e09\u3001eBPF\u5bf9\u7f51\u7edc\u534f\u8bae\u4f18\u5316\u7684\u8d21\u732e<\/strong><\/p>\n\n\n\n\n

      \n\n\n
    1. \n\n

      \u3000\u3000\u51cf\u5c11\u5185\u6838\u5f00\u9500
      \n\u901a\u8fc7\u5728\u5185\u6838\u4e2d\u76f4\u63a5\u5904\u7406\u7f51\u7edc\u76f8\u5173\u7684\u4efb\u52a1\uff0ceBPF\u907f\u514d\u4e86\u4e0d\u5fc5\u8981\u7684\u5185\u6838\u5230\u7528\u6237\u7a7a\u95f4\u7684\u5207\u6362\u548c\u6570\u636e\u62f7\u8d1d\uff0c\u4ece\u800c\u964d\u4f4e\u4e86\u5185\u6838\u7684\u5f00\u9500\uff0c\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u6574\u4f53\u6027\u80fd\u3002<\/p>\n\n\n<\/li>\n\n\n\n\n

    2. \n\n

      \u3000\u3000\u5b9e\u65f6\u8c03\u6574\u534f\u8bae\u53c2\u6570
      \n\u57fa\u4e8eeBPF\u6536\u96c6\u5230\u7684\u5b9e\u65f6\u7f51\u7edc\u6570\u636e\uff0c\u53ef\u4ee5\u52a8\u6001\u5730\u8c03\u6574\u7f51\u7edc\u534f\u8bae\u7684\u53c2\u6570\uff0c\u4ee5\u9002\u5e94\u7f51\u7edc\u73af\u5883\u7684\u53d8\u5316\u3002\u4f8b\u5982\uff0c\u6839\u636e\u7f51\u7edc\u62e5\u585e\u60c5\u51b5\u5b9e\u65f6\u8c03\u6574TCP\u7684\u7a97\u53e3\u5927\u5c0f\uff0c\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u3002<\/p>\n\n\n<\/li>\n\n\n\n\n

    3. \n\n

      \u3000\u3000\u4f18\u5316\u7f51\u7edc\u7f13\u5b58
      \neBPF\u53ef\u4ee5\u5e2e\u52a9\u5206\u6790\u7f51\u7edc\u7f13\u5b58\u7684\u4f7f\u7528\u60c5\u51b5\uff0c\u627e\u51fa\u7f13\u5b58\u547d\u4e2d\u7387\u4f4e\u7684\u539f\u56e0\uff0c\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u4f18\u5316\uff0c\u63d0\u9ad8\u7f51\u7edc\u6570\u636e\u7684\u8bbf\u95ee\u901f\u5ea6\u3002<\/p>\n\n\n<\/li>\n\n\n<\/ol>\n\n\n\n\n

      \u3000\u3000\u56db\u3001eBPF\u4e0e\u4e91\u6749\u7f51\u7edc\u7684\u7ed3\u5408<\/strong><\/p>\n\n\n\n\n

      \u3000\u3000\u4e91\u6749\u7f51\u7edc\u4e00\u76f4\u81f4\u529b\u4e8e\u4e3a\u4f01\u4e1a\u63d0\u4f9b\u5148\u8fdb\u7684\u7f51\u7edc\u89e3\u51b3\u65b9\u6848\uff0c\u5c06eBPF\u6280\u672f\u878d\u5165\u5176\u4ea7\u54c1\u548c\u670d\u52a1\u4e2d\uff0c\u53d6\u5f97\u4e86\u663e\u8457\u7684\u6210\u679c\u3002<\/p>\n\n\n\n\n

      \u3000\u3000\u901a\u8fc7\u5229\u7528eBPF\u7684\u5f3a\u5927\u529f\u80fd\uff0c\u4e91\u6749\u7f51\u7edc\u80fd\u591f\u4e3a\u5ba2\u6237\u63d0\u4f9b\u66f4\u7cbe\u51c6\u7684\u7f51\u7edc\u534f\u8bae\u5206\u6790\u670d\u52a1\u3002\u5feb\u901f\u8bc6\u522b\u7f51\u7edc\u4e2d\u7684\u95ee\u9898\u548c\u74f6\u9888\uff0c\u4e3a\u4f18\u5316\u7f51\u7edc\u6027\u80fd\u63d0\u4f9b\u6709\u529b\u7684\u652f\u6301\u3002<\/p>\n\n\n\n\n

      \u3000\u3000\u5728\u7f51\u7edc\u4f18\u5316\u65b9\u9762\uff0c\u4e91\u6749\u7f51\u7edc\u501f\u52a9eBPF\u5b9e\u73b0\u4e86\u5b9e\u65f6\u7684\u6027\u80fd\u76d1\u6d4b\u548c\u8c03\u6574\uff0c\u786e\u4fdd\u7f51\u7edc\u59cb\u7ec8\u4fdd\u6301\u9ad8\u6548\u8fd0\u884c\uff0c\u63d0\u5347\u4e86\u7528\u6237\u7684\u7f51\u7edc\u4f53\u9a8c\u3002<\/p>\n\n\n\n\n

      \u3000\u3000\u4e94\u3001eBPF\u9762\u4e34\u7684\u6311\u6218\u4e0e\u672a\u6765\u5c55\u671b<\/strong><\/p>\n\n\n\n\n

      \u3000\u3000\u5c3d\u7ba1eBPF\u5e26\u6765\u4e86\u8bf8\u591a\u4f18\u52bf\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u4e5f\u9762\u4e34\u4e00\u4e9b\u6311\u6218\u3002<\/p>\n\n\n\n\n

      \u3000\u3000\u5f00\u53d1\u96be\u5ea6\u8f83\u9ad8\uff1a\u7f16\u5199eBPF\u7a0b\u5e8f\u9700\u8981\u5bf9\u5185\u6838\u673a\u5236\u548c\u7f51\u7edc\u534f\u8bae\u6709\u6df1\u5165\u7684\u7406\u89e3\uff0c\u5bf9\u5f00\u53d1\u4eba\u5458\u7684\u6280\u672f\u8981\u6c42\u8f83\u9ad8\u3002<\/p>\n\n\n\n\n

      \u3000\u3000\u5b89\u5168\u6027\u95ee\u9898\uff1a\u7531\u4e8eeBPF\u7a0b\u5e8f\u5728\u5185\u6838\u4e2d\u8fd0\u884c\uff0c\u4e00\u65e6\u51fa\u73b0\u9519\u8bef\u6216\u88ab\u6076\u610f\u5229\u7528\uff0c\u53ef\u80fd\u4f1a\u5bf9\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u5b89\u5168\u6027\u9020\u6210\u5a01\u80c1\u3002<\/p>\n\n\n\n\n

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