{"id":28816,"date":"2024-11-06T17:28:56","date_gmt":"2024-11-06T09:28:56","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=19902"},"modified":"2024-11-06T17:28:56","modified_gmt":"2024-11-06T09:28:56","slug":"%e8%a7%a3%e8%af%bbebpf%ef%bc%9a%e4%b8%ba%e4%bd%95%e5%ae%83%e6%88%90%e4%b8%ba%e5%86%85%e6%a0%b8%e5%bc%80%e5%8f%91%e7%9a%84%e7%83%ad%e9%97%a8%e9%80%89%e6%8b%a9","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/28816.html","title":{"rendered":"\u89e3\u8bfbeBPF\uff1a\u4e3a\u4f55\u5b83\u6210\u4e3a\u5185\u6838\u5f00\u53d1\u7684\u70ed\u95e8\u9009\u62e9"},"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\u5728\u5185\u6838\u5f00\u53d1\u9886\u57df\u8fc5\u901f\u5d1b\u8d77\uff0c\u6210\u4e3a\u4f17\u591a\u5f00\u53d1\u8005\u548c\u6280\u672f\u4e13\u5bb6\u7684\u70ed\u95e8\u9009\u62e9\u3002\u672c\u6587\u5c06\u4eceeBPF<\/a>\u7684\u57fa\u672c\u6982\u5ff5\u3001\u6280\u672f\u4f18\u52bf\u3001\u5e94\u7528\u573a\u666f\u4ee5\u53ca\u672a\u6765\u53d1\u5c55\u7b49\u591a\u4e2a\u65b9\u9762\uff0c\u8be6\u7ec6\u89e3\u8bfb\u4e3a\u4f55eBPF\u80fd\u591f\u6210\u4e3a\u5185\u6838\u5f00\u53d1\u7684\u70ed\u95e8\u9009\u62e9\u3002<\/p>\n\n\n\n\n

eBPF\u7684\u57fa\u672c\u6982\u5ff5<\/h3>\n\n\n\n\n

eBPF\u7684\u524d\u8eab\u662fBPF\uff08Berkeley Packet Filter\uff09\uff0c\u6700\u521d\u7531\u52b3\u4f26\u65af\u4f2f\u514b\u5229\u56fd\u5bb6\u5b9e\u9a8c\u5ba4\u7684\u53f2\u8482\u592b\u00b7\u9ea6\u57fa\u5c14\uff08Steve McCanne\uff09\u548c\u8303\u00b7\u96c5\u5404\u5e03\u68ee\uff08Van Jacobson\uff09\u57281992\u5e74\u63d0\u51fa\u3002BPF\u4e3b\u8981\u7528\u4e8e\u7f51\u7edc\u6570\u636e\u5305\u7684\u8fc7\u6ee4\uff0c\u5141\u8bb8\u7528\u6237\u7a7a\u95f4\u7a0b\u5e8f\u5b9a\u4e49\u8fc7\u6ee4\u5668\uff0c\u4ee5\u4fbf\u9ad8\u6548\u5730\u6355\u83b7\u611f\u5174\u8da3\u7684\u6570\u636e\u5305\u3002<\/p>\n\n\n\n\n\n\n\n\n

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

\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55\uff0cBPF\u7684\u529f\u80fd\u9010\u6e10\u6269\u5c55\uff0c\u5f62\u6210\u4e86\u4eca\u5929\u7684eBPF\u3002eBPF\u4e0d\u4ec5\u652f\u6301\u7f51\u7edc\u6570\u636e\u5305\u8fc7\u6ee4\uff0c\u8fd8\u80fd\u591f\u5728\u5185\u6838\u4e2d\u8fd0\u884c\u7528\u6237\u5b9a\u4e49\u7684\u7a0b\u5e8f\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9\u5185\u6838\u884c\u4e3a\u7684\u76d1\u63a7\u3001\u5206\u6790\u548c\u4fee\u6539\u3002eBPF\u7a0b\u5e8f\u7684\u8fd0\u884c\u73af\u5883\u662f\u4e00\u4e2a\u5728\u5185\u6838\u4e2d\u7684\u865a\u62df\u673a\uff0c\u79f0\u4e3aeBPF VM\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u5957\u5b89\u5168\u7684\u6307\u4ee4\u96c6\u548c\u6267\u884c\u73af\u5883\u3002<\/p>\n\n\n\n\n

eBPF\u7684\u6280\u672f\u4f18\u52bf<\/h3>\n\n\n\n\n

1. \u9ad8\u6027\u80fd\u4e0e\u4f4e\u5ef6\u8fdf<\/h4>\n\n\n\n\n

eBPF\u7684\u4e00\u4e2a\u663e\u8457\u4f18\u52bf\u662f\u5176\u9ad8\u6027\u80fd\u548c\u4f4e\u5ef6\u8fdf\u3002\u4f20\u7edf\u7684\u5185\u6838\u6a21\u5757\u6216\u7528\u6237\u7a7a\u95f4\u7a0b\u5e8f\u5728\u5904\u7406\u5185\u6838\u6570\u636e\u65f6\uff0c\u5f80\u5f80\u9700\u8981\u9891\u7e41\u5730\u5728\u7528\u6237\u7a7a\u95f4\u548c\u5185\u6838\u7a7a\u95f4\u4e4b\u95f4\u8fdb\u884c\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u8fd9\u4e0d\u4ec5\u589e\u52a0\u4e86\u5904\u7406\u65f6\u95f4\uff0c\u8fd8\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u74f6\u9888\u3002\u800ceBPF\u7a0b\u5e8f\u76f4\u63a5\u5728\u5185\u6838\u4e2d\u8fd0\u884c\uff0c\u907f\u514d\u4e86\u4e0d\u5fc5\u8981\u7684\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u4ece\u800c\u663e\u8457\u63d0\u9ad8\u4e86\u5904\u7406\u6548\u7387\u3002<\/p>\n\n\n\n\n

2. \u5b89\u5168\u6027<\/h4>\n\n\n\n\n

eBPF\u7a0b\u5e8f\u5728\u6267\u884c\u524d\u9700\u8981\u7ecf\u8fc7\u4e25\u683c\u7684\u9a8c\u8bc1\uff0c\u786e\u4fdd\u5176\u4e0d\u4f1a\u5bf9\u5185\u6838\u7a33\u5b9a\u6027\u9020\u6210\u5f71\u54cd\u3002eBPF\u9a8c\u8bc1\u5668\u4f1a\u5bf9\u7a0b\u5e8f\u8fdb\u884c\u9759\u6001\u5206\u6790\uff0c\u68c0\u67e5\u662f\u5426\u5b58\u5728\u6f5c\u5728\u7684\u5185\u5b58\u8d8a\u754c\u3001\u6b7b\u5faa\u73af\u7b49\u95ee\u9898\u3002\u53ea\u6709\u901a\u8fc7\u9a8c\u8bc1\u7684\u7a0b\u5e8f\u624d\u80fd\u88ab\u52a0\u8f7d\u5230\u5185\u6838\u4e2d\u6267\u884c\uff0c\u8fd9\u4e00\u673a\u5236\u5927\u5927\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n\n

3. \u7075\u6d3b\u6027\u4e0e\u53ef\u6269\u5c55\u6027<\/h4>\n\n\n\n\n

eBPF\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u94a9\u5b50\uff08hook\uff09\u70b9\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u5185\u6838\u7684\u591a\u4e2a\u5173\u952e\u4f4d\u7f6e\u63d2\u5165\u81ea\u5b9a\u4e49\u7684\u7a0b\u5e8f\u3002\u8fd9\u4e9b\u94a9\u5b50\u70b9\u8986\u76d6\u4e86\u7f51\u7edc\u6808\u3001\u6587\u4ef6\u7cfb\u7edf\u3001\u7cfb\u7edf\u8c03\u7528\u7b49\u591a\u4e2a\u65b9\u9762\uff0c\u4f7f\u5f97eBPF\u80fd\u591f\u5e7f\u6cdb\u5e94\u7528\u4e8e\u6027\u80fd\u76d1\u63a7\u3001\u5b89\u5168\u5ba1\u8ba1\u3001\u6d41\u91cf\u63a7\u5236\u7b49\u9886\u57df\u3002\u6b64\u5916\uff0ceBPF\u7a0b\u5e8f\u53ef\u4ee5\u901a\u8fc7map\u6570\u636e\u7ed3\u6784\u4e0e\u7528\u6237\u7a7a\u95f4\u7a0b\u5e8f\u8fdb\u884c\u9ad8\u6548\u7684\u6570\u636e\u4ea4\u6362\uff0c\u8fdb\u4e00\u6b65\u589e\u5f3a\u4e86\u5176\u7075\u6d3b\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n\n\n\n\n

4. \u52a8\u6001\u66f4\u65b0<\/h4>\n\n\n\n\n

eBPF\u7a0b\u5e8f\u652f\u6301\u52a8\u6001\u66f4\u65b0\uff0c\u8fd9\u610f\u5473\u7740\u5f00\u53d1\u8005\u53ef\u4ee5\u5728\u4e0d\u91cd\u542f\u7cfb\u7edf\u7684\u60c5\u51b5\u4e0b\uff0c\u5bf9\u8fd0\u884c\u7684eBPF\u7a0b\u5e8f\u8fdb\u884c\u4fee\u6539\u548c\u5347\u7ea7\u3002\u8fd9\u4e00\u7279\u6027\u6781\u5927\u5730\u63d0\u5347\u4e86\u7cfb\u7edf\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u9760\u6027\uff0c\u7279\u522b\u662f\u5728\u9700\u8981\u9891\u7e41\u8c03\u6574\u548c\u4f18\u5316\u7684\u573a\u666f\u4e2d\uff0c\u52a8\u6001\u66f4\u65b0\u663e\u5f97\u5c24\u4e3a\u91cd\u8981\u3002<\/p>\n\n\n\n\n

eBPF\u7684\u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n\n

1. \u7f51\u7edc\u76d1\u63a7\u4e0e\u6d41\u91cf\u5206\u6790<\/h4>\n\n\n\n\n

eBPF\u5728\u7f51\u7edc\u76d1\u63a7\u548c\u6d41\u91cf\u5206\u6790\u9886\u57df\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u901a\u8fc7\u5728\u5185\u6838\u7684\u7f51\u7edc\u6808\u4e2d\u63d2\u5165eBPF\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u7f51\u7edc\u6d41\u91cf\u7684\u5b9e\u65f6\u76d1\u63a7\u548c\u5206\u6790\u3002\u4f8b\u5982\uff0cCilium\u9879\u76ee\u5229\u7528eBPF\u5b9e\u73b0\u4e86\u9ad8\u6548\u7684\u7f51\u7edc\u7b56\u7565\u7ba1\u7406\u548c\u6d41\u91cf\u52a0\u5bc6\uff0c\u6781\u5927\u5730\u63d0\u5347\u4e86\u5bb9\u5668\u7f51\u7edc\u7684\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n\n

2. \u6027\u80fd\u76d1\u63a7\u4e0e\u6545\u969c\u8bca\u65ad<\/h4>\n\n\n\n\n

eBPF\u5728\u6027\u80fd\u76d1\u63a7\u548c\u6545\u969c\u8bca\u65ad\u65b9\u9762\u4e5f\u8868\u73b0\u51fa\u8272\u3002\u901a\u8fc7\u5728\u5185\u6838\u7684\u5173\u952e\u8def\u5f84\u4e0a\u63d2\u5165eBPF\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u6536\u96c6\u8be6\u7ec6\u7684\u6027\u80fd\u6570\u636e\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5b9a\u4f4d\u6027\u80fd\u74f6\u9888\u548c\u6545\u969c\u539f\u56e0\u3002Prometheus<\/a>\u3001Grafana\u7b49\u76d1\u63a7\u5de5\u5177\u5df2\u7ecf\u652f\u6301\u901a\u8fc7eBPF\u83b7\u53d6\u5185\u6838\u7ea7\u7684\u6570\u636e\uff0c\u63d0\u4f9b\u4e86\u66f4\u4e3a\u7cbe\u51c6\u7684\u6027\u80fd\u5206\u6790\u3002<\/p>\n\n\n\n\n

3. \u5b89\u5168\u5ba1\u8ba1\u4e0e\u5165\u4fb5\u68c0\u6d4b<\/h4>\n\n\n\n\n

eBPF\u5728\u5b89\u5168\u5ba1\u8ba1\u548c\u5165\u4fb5\u68c0\u6d4b\u65b9\u9762\u7684\u5e94\u7528\u540c\u6837\u503c\u5f97\u5173\u6ce8\u3002\u901a\u8fc7\u76d1\u63a7\u7cfb\u7edf\u8c03\u7528\u3001\u6587\u4ef6\u64cd\u4f5c\u7b49\u5185\u6838\u884c\u4e3a\uff0ceBPF\u7a0b\u5e8f\u53ef\u4ee5\u5b9e\u65f6\u68c0\u6d4b\u6f5c\u5728\u7684\u6076\u610f\u884c\u4e3a\uff0c\u5e76\u89e6\u53d1\u76f8\u5e94\u7684\u5b89\u5168\u7b56\u7565\u3002\u4f8b\u5982\uff0cFalco\u9879\u76ee\u5229\u7528eBPF\u5b9e\u73b0\u4e86\u5bf9\u5bb9\u5668\u548c\u4e3b\u673a\u7cfb\u7edf\u7684\u5b89\u5168\u5ba1\u8ba1\uff0c\u6709\u6548\u63d0\u5347\u4e86\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n\n

4. \u6d41\u91cf\u63a7\u5236\u4e0e\u8d1f\u8f7d\u5747\u8861<\/h4>\n\n\n\n\n

eBPF\u8fd8\u53ef\u4ee5\u7528\u4e8e\u6d41\u91cf\u63a7\u5236\u548c\u8d1f\u8f7d\u5747\u8861\u3002\u901a\u8fc7\u5728\u5185\u6838\u4e2d\u63d2\u5165\u81ea\u5b9a\u4e49\u7684eBPF\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u5b9e\u73b0\u7ec6\u7c92\u5ea6\u7684\u6d41\u91cf\u63a7\u5236\u7b56\u7565\uff0c\u4f18\u5316\u7f51\u7edc\u8d44\u6e90\u7684\u5206\u914d\u3002\u4f8b\u5982\uff0cXDP\uff08eXpress Data Path\uff09\u5229\u7528eBPF\u5b9e\u73b0\u4e86\u9ad8\u6548\u7684\u6d41\u91cf\u5206\u7c7b\u548c\u8d1f\u8f7d\u5747\u8861\uff0c\u663e\u8457\u63d0\u5347\u4e86\u7f51\u7edc\u6027\u80fd\u3002<\/p>\n\n\n\n\n

eBPF\u7684\u751f\u6001\u7cfb\u7edf<\/h3>\n\n\n\n\n

eBPF\u7684\u5feb\u901f\u53d1\u5c55\u79bb\u4e0d\u5f00\u5176\u65e5\u76ca\u5b8c\u5584\u7684\u751f\u6001\u7cfb\u7edf\u3002\u76ee\u524d\uff0ceBPF\u5f97\u5230\u4e86Linux\u5185\u6838\u793e\u533a\u7684\u5e7f\u6cdb\u652f\u6301\uff0c\u8bb8\u591a\u5185\u6838\u7248\u672c\u5df2\u7ecf\u5185\u7f6e\u4e86eBPF\u529f\u80fd\u3002\u6b64\u5916\uff0ceBPF\u7684\u5de5\u5177\u94fe\u548c\u5e93\u4e5f\u5728\u4e0d\u65ad\u4e30\u5bcc\uff0c\u5982BCC\uff08BPF Compiler Collection\uff09\u3001bpftrace\u3001libbpf\u7b49\uff0c\u4e3a\u5f00\u53d1\u8005\u63d0\u4f9b\u4e86\u4fbf\u6377\u7684\u5f00\u53d1\u548c\u8c03\u8bd5\u5de5\u5177\u3002<\/p>\n\n\n\n\n

eBPF\u7684\u672a\u6765\u53d1\u5c55<\/h3>\n\n\n\n\n

1. \u529f\u80fd\u7684\u8fdb\u4e00\u6b65\u6269\u5c55<\/h4>\n\n\n\n\n

\u968f\u7740eBPF\u6280\u672f\u7684\u4e0d\u65ad\u6210\u719f\uff0c\u5176\u529f\u80fd\u5c06\u8fdb\u4e00\u6b65\u6269\u5c55\u3002\u672a\u6765\uff0ceBPF\u53ef\u80fd\u4f1a\u652f\u6301\u66f4\u591a\u7684\u5185\u6838\u6a21\u5757\u548c\u5b50\u7cfb\u7edf\uff0c\u63d0\u4f9b\u66f4\u4e3a\u4e30\u5bcc\u7684\u94a9\u5b50\u70b9\u548c\u6570\u636e\u7ed3\u6784\uff0c\u4ee5\u6ee1\u8db3\u66f4\u591a\u590d\u6742\u573a\u666f\u7684\u9700\u6c42\u3002<\/p>\n\n\n\n\n

2. \u6027\u80fd\u7684\u6301\u7eed\u4f18\u5316<\/h4>\n\n\n\n\n

\u6027\u80fd\u662feBPF\u7684\u6838\u5fc3\u4f18\u52bf\u4e4b\u4e00\uff0c\u672a\u6765eBPF\u7684\u6027\u80fd\u4f18\u5316\u5c06\u7ee7\u7eed\u8fdb\u884c\u3002\u901a\u8fc7\u4f18\u5316eBPF\u865a\u62df\u673a\u7684\u6267\u884c\u6548\u7387\u3001\u51cf\u5c11\u5185\u5b58\u5f00\u9500\u7b49\u65b9\u5f0f\uff0ceBPF\u7684\u6027\u80fd\u5c06\u8fdb\u4e00\u6b65\u63d0\u5347\uff0c\u66f4\u597d\u5730\u6ee1\u8db3\u9ad8\u6027\u80fd\u5e94\u7528\u7684\u9700\u6c42\u3002<\/p>\n\n\n\n\n

3. \u5b89\u5168\u6027\u7684\u52a0\u5f3a<\/h4>\n\n\n\n\n

\u5b89\u5168\u6027\u662feBPF\u5f97\u4ee5\u5e7f\u6cdb\u5e94\u7528\u7684\u57fa\u7840\u3002\u672a\u6765\uff0ceBPF\u7684\u9a8c\u8bc1\u5668\u5c06\u66f4\u52a0\u4e25\u683c\u548c\u667a\u80fd\uff0c\u80fd\u591f\u68c0\u6d4b\u66f4\u591a\u6f5c\u5728\u7684\u5b89\u5168\u98ce\u9669\u3002\u540c\u65f6\uff0ceBPF\u7684\u5b89\u5168\u673a\u5236\u4e5f\u5c06\u8fdb\u4e00\u6b65\u5b8c\u5584\uff0c\u786e\u4fdd\u5176\u5728\u590d\u6742\u73af\u5883\u4e2d\u7684\u7a33\u5b9a\u8fd0\u884c\u3002<\/p>\n\n\n\n\n

4. \u751f\u6001\u7cfb\u7edf\u7684\u8fdb\u4e00\u6b65\u7e41\u8363<\/h4>\n\n\n\n\n

eBPF\u7684\u751f\u6001\u7cfb\u7edf\u5c06\u7ee7\u7eed\u7e41\u8363\u53d1\u5c55\u3002\u66f4\u591a\u7684\u5f00\u6e90\u9879\u76ee\u548c\u5546\u4e1a\u4ea7\u54c1\u5c06\u652f\u6301eBPF\uff0c\u63d0\u4f9b\u66f4\u4e3a\u4e30\u5bcc\u7684\u5e94\u7528\u573a\u666f\u548c\u89e3\u51b3\u65b9\u6848\u3002\u540c\u65f6\uff0ceBPF\u7684\u5f00\u53d1\u8005\u793e\u533a\u4e5f\u5c06\u4e0d\u65ad\u58ee\u5927\uff0c\u63a8\u52a8\u6280\u672f\u7684\u521b\u65b0\u548c\u5e94\u7528\u3002<\/p>\n\n\n\n\n

\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":19903,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-28816","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\/28816","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=28816"}],"version-history":[{"count":0,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/28816\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/19903"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=28816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=28816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=28816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}