{"id":21923,"date":"2024-11-19T13:59:26","date_gmt":"2024-11-19T05:59:26","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=21923"},"modified":"2024-11-19T13:59:26","modified_gmt":"2024-11-19T05:59:26","slug":"ebpf%e5%ba%94%e7%94%a8%e5%9c%ba%e6%99%af%e7%a7%91%e6%99%ae%ef%bc%9a%e4%bb%8e%e7%bd%91%e7%bb%9c%e5%88%b0%e5%ad%98%e5%82%a8","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/21923.html","title":{"rendered":"eBPF\u5e94\u7528\u573a\u666f\u79d1\u666e\uff1a\u4ece\u7f51\u7edc\u5230\u5b58\u50a8"},"content":{"rendered":"

\t\t\t\teBPF<\/a>\uff08Extended Berkeley Packet Filter\uff09\u4f5c\u4e3a\u4e00\u79cd\u65b0\u5174\u7684\u6280\u672f\uff0c\u8fd1\u5e74\u6765\u5728Linux\u5185\u6838\u9886\u57df\u5f15\u8d77\u4e86\u5e7f\u6cdb\u5173\u6ce8\u3002\u5b83\u4e0d\u4ec5\u6269\u5c55\u4e86\u4f20\u7edfBPF\uff08Berkeley Packet Filter\uff09\u7684\u529f\u80fd\uff0c\u8fd8\u4e3a\u5176\u5e94\u7528\u573a\u666f\u5e26\u6765\u4e86\u9769\u547d\u6027\u7684\u53d8\u5316\u3002\u672c\u6587\u5c06\u4ece\u7f51\u7edc\u3001\u5b89\u5168\u3001\u76d1\u63a7\u3001\u6027\u80fd\u5206\u6790\u4ee5\u53ca\u5b58\u50a8\u7b49\u591a\u4e2a\u65b9\u9762\uff0c\u8be6\u7ec6\u79d1\u666eeBPF<\/a>\u7684\u5e94\u7528\u573a\u666f\uff0c\u5e2e\u52a9\u8bfb\u8005\u5168\u9762\u4e86\u89e3\u8fd9\u4e00\u6280\u672f\u7684\u5f3a\u5927\u6f5c\u529b\u3002<\/p>\n\n\n\n\n

\u4e00\u3001eBPF\u7684\u57fa\u672c\u6982\u5ff5<\/h3>\n\n\n\n\n

eBPF\u662f\u57fa\u4e8eBPF\u7684\u4e00\u79cd\u6269\u5c55\u6280\u672f\uff0c\u6700\u521d\u7528\u4e8e\u7f51\u7edc\u6570\u636e\u5305\u8fc7\u6ee4\u3002\u4e0e\u4f20\u7edfBPF\u76f8\u6bd4\uff0ceBPF\u4e0d\u4ec5\u652f\u6301\u66f4\u590d\u6742\u7684\u8fc7\u6ee4\u903b\u8f91\uff0c\u8fd8\u80fd\u5728\u5185\u6838\u4e2d\u8fd0\u884c\u7528\u6237\u5b9a\u4e49\u7684\u7a0b\u5e8f\u3002\u8fd9\u4e9b\u7a0b\u5e8f\u901a\u8fc7eBPF\u865a\u62df\u673a\u5728\u5185\u6838\u4e2d\u6267\u884c\uff0c\u6781\u5927\u5730\u63d0\u5347\u4e86\u7cfb\u7edf\u7684\u7075\u6d3b\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n\n\n\n\n\n\n\n\n

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

eBPF\u7684\u6838\u5fc3\u7ec4\u4ef6\u5305\u62ec\uff1a<\/p>\n\n\n\n\n

    \n\n\n
  1. eBPF\u7a0b\u5e8f<\/strong>\uff1a\u7528\u6237\u7f16\u5199\u7684\u7528\u4e8e\u7279\u5b9a\u4efb\u52a1\u7684\u4ee3\u7801\u3002<\/li>\n\n\n\n\n
  2. eBPF maps<\/strong>\uff1a\u7528\u4e8e\u5b58\u50a8\u548c\u4f20\u9012\u6570\u636e\u7684\u952e\u503c\u5bf9\u6570\u636e\u7ed3\u6784\u3002<\/li>\n\n\n\n\n
  3. eBPF\u94a9\u5b50\uff08Hooks\uff09<\/strong>\uff1a\u5185\u6838\u4e2d\u9884\u5b9a\u4e49\u7684\u6267\u884c\u70b9\uff0ceBPF\u7a0b\u5e8f\u53ef\u4ee5\u6302\u8f7d\u5728\u8fd9\u4e9b\u70b9\u4e0a\u6267\u884c\u3002<\/li>\n\n\n<\/ol>\n\n\n\n\n

    \u4e8c\u3001\u7f51\u7edc\u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n\n

    1. \u9ad8\u6027\u80fd\u7f51\u7edc\u6570\u636e\u5305\u8fc7\u6ee4<\/h4>\n\n\n\n\n

    \u4f20\u7edf\u7684\u7f51\u7edc\u6570\u636e\u5305\u8fc7\u6ee4\u5de5\u5177\u5982iptables\u548cnftables\uff0c\u867d\u7136\u529f\u80fd\u5f3a\u5927\uff0c\u4f46\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u5305\u65f6\u6027\u80fd\u53d7\u9650\u3002eBPF\u901a\u8fc7\u5728\u5185\u6838\u4e2d\u76f4\u63a5\u5904\u7406\u6570\u636e\u5305\uff0c\u663e\u8457\u63d0\u5347\u4e86\u8fc7\u6ee4\u6548\u7387\u3002\u4f8b\u5982\uff0cCilium\u9879\u76ee\u5229\u7528eBPF\u5b9e\u73b0\u4e86\u9ad8\u6548\u7684\u5bb9\u5668\u7f51\u7edc\u9694\u79bb\u548c\u5b89\u5168\u7b56\u7565 enforcement\u3002<\/p>\n\n\n\n\n

    2. \u7f51\u7edc\u76d1\u63a7\u548c\u6d41\u91cf\u5206\u6790<\/h4>\n\n\n\n\n

    eBPF\u53ef\u4ee5\u6355\u83b7\u548c\u5206\u6790\u7f51\u7edc\u6d41\u91cf\uff0c\u63d0\u4f9b\u5b9e\u65f6\u7684\u76d1\u63a7\u6570\u636e\u3002\u5de5\u5177\u5982bpftrace\u548cbcc\uff08BPF Compiler Collection\uff09\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u8f7b\u677e\u7f16\u5199eBPF\u7a0b\u5e8f\uff0c\u76d1\u63a7\u7f51\u7edc\u4e8b\u4ef6\u3002\u4f8b\u5982\uff0c\u901a\u8fc7eBPF\u53ef\u4ee5\u5b9e\u65f6\u76d1\u63a7TCP\u8fde\u63a5\u72b6\u6001\u3001\u6d41\u91cf\u5206\u5e03\u7b49\u4fe1\u606f\uff0c\u5e2e\u52a9\u8fd0\u7ef4\u4eba\u5458\u5feb\u901f\u5b9a\u4f4d\u7f51\u7edc\u95ee\u9898\u3002<\/p>\n\n\n\n\n

    3. \u670d\u52a1\u7f51\u683c\uff08Service Mesh\uff09<\/h4>\n\n\n\n\n

    \u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\uff0c\u670d\u52a1\u7f51\u683c\u5982Istio\u548cLinkerd\u8d1f\u8d23\u670d\u52a1\u95f4\u7684\u901a\u4fe1\u7ba1\u7406\u548c\u5b89\u5168\u3002eBPF\u4e3a\u670d\u52a1\u7f51\u683c\u63d0\u4f9b\u4e86\u66f4\u9ad8\u6548\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u901a\u8fc7\u5185\u6838\u7ea7\u522b\u7684\u6d41\u91cf\u52ab\u6301\u548c\u7b56\u7565 enforcement\uff0c\u51cf\u5c11\u4e86\u5e94\u7528\u5c42\u9762\u7684\u5f00\u9500\u3002<\/p>\n\n\n\n\n

    \u4e09\u3001\u5b89\u5168\u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n\n

    1. \u884c\u4e3a\u76d1\u63a7\u4e0e\u5f02\u5e38\u68c0\u6d4b<\/h4>\n\n\n\n\n

    eBPF\u53ef\u4ee5\u76d1\u63a7\u7cfb\u7edf\u7684\u5404\u79cd\u884c\u4e3a\uff0c\u5982\u6587\u4ef6\u64cd\u4f5c\u3001\u7f51\u7edc\u8fde\u63a5\u3001\u8fdb\u7a0b\u521b\u5efa\u7b49\uff0c\u4ece\u800c\u5b9e\u73b0\u5f02\u5e38\u884c\u4e3a\u7684\u5b9e\u65f6\u68c0\u6d4b\u3002\u4f8b\u5982\uff0cFalco\u9879\u76ee\u5229\u7528eBPF\u76d1\u63a7\u7cfb\u7edf\u8c03\u7528\uff0c\u68c0\u6d4b\u6f5c\u5728\u7684\u5b89\u5168\u5a01\u80c1\u3002<\/p>\n\n\n\n\n

    2. \u5b89\u5168\u7b56\u7565 enforcement<\/h4>\n\n\n\n\n

    \u901a\u8fc7eBPF\uff0c\u53ef\u4ee5\u5728\u5185\u6838\u5c42\u9762\u5b9e\u65bd\u7ec6\u7c92\u5ea6\u7684\u5b89\u5168\u7b56\u7565\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u9650\u5236\u7279\u5b9a\u8fdb\u7a0b\u7684\u7f51\u7edc\u8bbf\u95ee\u6743\u9650\uff0c\u6216\u8005\u5728\u6587\u4ef6\u7cfb\u7edf\u5c42\u9762\u5b9e\u65bd\u8bbf\u95ee\u63a7\u5236\uff0c\u6781\u5927\u5730\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n\n

    3. \u5bb9\u5668\u5b89\u5168<\/h4>\n\n\n\n\n

    \u5728\u5bb9\u5668\u73af\u5883\u4e2d\uff0ceBPF\u53ef\u4ee5\u63d0\u4f9b\u5bb9\u5668\u95f4\u7684\u9694\u79bb\u548c\u76d1\u63a7\u3002\u4f8b\u5982\uff0cCilium\u4e0d\u4ec5\u5b9e\u73b0\u4e86\u7f51\u7edc\u9694\u79bb\uff0c\u8fd8\u80fd\u76d1\u63a7\u5bb9\u5668\u5185\u7684\u7cfb\u7edf\u8c03\u7528\u548c\u7f51\u7edc\u6d3b\u52a8\uff0c\u786e\u4fdd\u5bb9\u5668\u5b89\u5168\u3002<\/p>\n\n\n\n\n

    \u56db\u3001\u76d1\u63a7\u4e0e\u6027\u80fd\u5206\u6790<\/h3>\n\n\n\n\n

    1. \u7cfb\u7edf\u6027\u80fd\u76d1\u63a7<\/h4>\n\n\n\n\n

    eBPF\u53ef\u4ee5\u5b9e\u65f6\u76d1\u63a7\u7cfb\u7edf\u7684\u5404\u79cd\u6027\u80fd\u6307\u6807\uff0c\u5982CPU\u4f7f\u7528\u7387\u3001\u5185\u5b58\u6d88\u8017\u3001I\/O\u64cd\u4f5c\u7b49\u3002\u5de5\u5177\u5982bcc\u548cbpftrace\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684eBPF\u7a0b\u5e8f\u793a\u4f8b\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u8f7b\u677e\u5b9e\u73b0\u6027\u80fd\u76d1\u63a7\u3002<\/p>\n\n\n\n\n

    2. \u8ddf\u8e2a\u548c\u5206\u6790\u7cfb\u7edf\u8c03\u7528<\/h4>\n\n\n\n\n

    \u901a\u8fc7eBPF\uff0c\u53ef\u4ee5\u8ddf\u8e2a\u548c\u5206\u6790\u7cfb\u7edf\u8c03\u7528\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u7406\u89e3\u5e94\u7528\u7a0b\u5e8f\u4e0e\u5185\u6838\u7684\u4ea4\u4e92\u8fc7\u7a0b\u3002\u8fd9\u5bf9\u4e8e\u6027\u80fd\u8c03\u4f18\u548c\u6545\u969c\u6392\u67e5\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n\n\n\n\n

    3. \u5206\u5e03\u5f0f\u8ffd\u8e2a<\/a><\/h4>\n\n\n\n\n

    \u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u8ffd\u8e2a\u8bf7\u6c42\u7684\u5b8c\u6574\u8def\u5f84\u662f\u4e00\u4e2a\u6311\u6218\u3002eBPF\u53ef\u4ee5\u4e0e\u5206\u5e03\u5f0f\u8ffd\u8e2a<\/a>\u5de5\u5177\uff08\u5982Jaeger\u548cZipkin\uff09\u7ed3\u5408\uff0c\u5b9e\u73b0\u9ad8\u6548\u7684\u8bf7\u6c42\u8ffd\u8e2a\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u5206\u6790\u7cfb\u7edf\u7684\u6027\u80fd\u74f6\u9888\u3002<\/p>\n\n\n\n\n

    \u4e94\u3001\u5b58\u50a8\u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n\n

    1. I\/O\u6027\u80fd\u76d1\u63a7<\/h4>\n\n\n\n\n

    eBPF\u53ef\u4ee5\u76d1\u63a7\u5b58\u50a8\u7cfb\u7edf\u7684I\/O\u64cd\u4f5c\uff0c\u63d0\u4f9b\u8be6\u7ec6\u7684\u6027\u80fd\u6570\u636e\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u76d1\u63a7\u78c1\u76d8\u8bfb\u5199\u5ef6\u8fdf\u3001I\/O\u961f\u5217\u957f\u5ea6\u7b49\u6307\u6807\uff0c\u5e2e\u52a9\u8fd0\u7ef4\u4eba\u5458\u4f18\u5316\u5b58\u50a8\u6027\u80fd\u3002<\/p>\n\n\n\n\n

    2. \u6587\u4ef6\u7cfb\u7edf\u76d1\u63a7<\/h4>\n\n\n\n\n

    \u901a\u8fc7eBPF\uff0c\u53ef\u4ee5\u76d1\u63a7\u6587\u4ef6\u7cfb\u7edf\u7684\u5404\u79cd\u64cd\u4f5c\uff0c\u5982\u6587\u4ef6\u521b\u5efa\u3001\u5220\u9664\u3001\u8bfb\u5199\u7b49\u3002\u8fd9\u5bf9\u4e8e\u6587\u4ef6\u7cfb\u7edf\u7684\u6027\u80fd\u4f18\u5316\u548c\u5b89\u5168\u76d1\u63a7\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n\n\n\n\n

    3. \u5b58\u50a8\u7b56\u7565 enforcement<\/h4>\n\n\n\n\n

    eBPF\u53ef\u4ee5\u5728\u5185\u6838\u5c42\u9762\u5b9e\u65bd\u5b58\u50a8\u7b56\u7565\uff0c\u4f8b\u5982\uff0c\u53ef\u4ee5\u9650\u5236\u7279\u5b9a\u8fdb\u7a0b\u7684\u78c1\u76d8\u4f7f\u7528\u91cf\uff0c\u6216\u8005\u5728\u6587\u4ef6\u7cfb\u7edf\u5c42\u9762\u5b9e\u65bd\u8bbf\u95ee\u63a7\u5236\uff0c\u589e\u5f3a\u5b58\u50a8\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n\n

    \u516d\u3001\u5176\u4ed6\u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n\n

    1. \u5b9e\u65f6\u65e5\u5fd7\u6536\u96c6<\/h4>\n\n\n\n\n

    eBPF\u53ef\u4ee5\u7528\u4e8e\u5b9e\u65f6\u6536\u96c6\u7cfb\u7edf\u65e5\u5fd7\uff0c\u63d0\u4f9b\u8be6\u7ec6\u7684\u7cfb\u7edf\u6d3b\u52a8\u8bb0\u5f55\u3002\u8fd9\u5bf9\u4e8e\u5ba1\u8ba1\u548c\u6545\u969c\u6392\u67e5\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n\n\n\n\n

    2. \u81ea\u5b9a\u4e49\u5185\u6838\u529f\u80fd<\/h4>\n\n\n\n\n

    \u901a\u8fc7eBPF\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5728\u4e0d\u4fee\u6539\u5185\u6838\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u6269\u5c55\u5185\u6838\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u7f51\u7edc\u534f\u8bae\u5904\u7406\u3001\u6587\u4ef6\u7cfb\u7edf\u529f\u80fd\u7b49\u3002<\/p>\n\n\n\n\n

    3. \u4e91\u539f\u751f\u5e94\u7528<\/h4>\n\n\n\n\n

    \u5728\u4e91\u539f\u751f\u73af\u5883\u4e2d\uff0ceBPF\u4e3a\u7f51\u7edc\u3001\u5b89\u5168\u548c\u76d1\u63a7\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u89e3\u51b3\u65b9\u6848\u3002\u4f8b\u5982\uff0cKubernetes\u96c6\u7fa4\u53ef\u4ee5\u5229\u7528eBPF\u5b9e\u73b0\u9ad8\u6548\u7684\u7f51\u7edc\u7b56\u7565 enforcement \u548c\u6027\u80fd\u76d1\u63a7\u3002<\/p>\n\n\n\n\n

    \u4e03\u3001eBPF\u7684\u6311\u6218\u4e0e\u672a\u6765<\/h3>\n\n\n\n\n

    \u5c3d\u7ba1eBPF\u5177\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u524d\u666f\uff0c\u4f46\u4e5f\u9762\u4e34\u4e00\u4e9b\u6311\u6218\uff1a<\/p>\n\n\n\n\n

      \n\n\n
    1. \u590d\u6742\u6027<\/strong>\uff1a\u7f16\u5199\u9ad8\u6548\u7684eBPF\u7a0b\u5e8f\u9700\u8981\u6df1\u5165\u4e86\u89e3\u5185\u6838\u673a\u5236\uff0c\u5bf9\u5f00\u53d1\u8005\u7684\u8981\u6c42\u8f83\u9ad8\u3002<\/li>\n\n\n\n\n
    2. \u517c\u5bb9\u6027<\/strong>\uff1a\u4e0d\u540c\u7248\u672c\u7684Linux\u5185\u6838\u5bf9eBPF\u7684\u652f\u6301\u7a0b\u5ea6\u4e0d\u540c\uff0c\u53ef\u80fd\u5bfc\u81f4\u517c\u5bb9\u6027\u95ee\u9898\u3002<\/li>\n\n\n\n\n
    3. \u5b89\u5168\u6027<\/strong>\uff1aeBPF\u7a0b\u5e8f\u5728\u5185\u6838\u4e2d\u6267\u884c\uff0c\u5b58\u5728\u6f5c\u5728\u7684\u5b89\u5168\u98ce\u9669\uff0c\u9700\u8981\u4e25\u683c\u7684\u5b89\u5168\u673a\u5236\u6765\u9632\u8303\u3002<\/li>\n\n\n<\/ol>\n\n\n\n\n

      \u672a\u6765\uff0c\u968f\u7740eBPF\u6280\u672f\u7684\u4e0d\u65ad\u6210\u719f\u548c\u793e\u533a\u7684\u652f\u6301\uff0c\u8fd9\u4e9b\u95ee\u9898\u6709\u671b\u9010\u6b65\u89e3\u51b3\u3002eBPF\u6709\u671b\u5728\u66f4\u591a\u9886\u57df\u53d1\u6325\u91cd\u8981\u4f5c\u7528\uff0c\u6210\u4e3aLinux\u5185\u6838\u9886\u57df\u7684\u91cd\u8981\u6280\u672f\u4e4b\u4e00\u3002<\/p>\n\n\n\n\n

      \u516b\u3001\u603b\u7ed3<\/h3>\n\n\n\n\n

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      \t\t\t\t\t\t<\/p>\n","protected":false},"author":5,"featured_media":21924,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-21923","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-discussion"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/21923","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\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=21923"}],"version-history":[{"count":0,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/21923\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/21924"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=21923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=21923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=21923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}