{"id":36725,"date":"2025-05-12T02:06:05","date_gmt":"2025-05-11T18:06:05","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/36725.html"},"modified":"2025-05-12T02:06:05","modified_gmt":"2025-05-11T18:06:05","slug":"%e6%9c%8d%e5%8a%a1%e5%99%a8%e9%a2%86%e5%9f%9f%e7%9a%84%e8%bf%90%e7%bb%b4%e6%8a%80%e5%b7%a7%e5%85%a8%e8%a7%a3%e6%9e%90%ef%bc%9a%e5%ae%9e%e7%94%a8%e5%b9%b2%e8%b4%a7","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/36725.html","title":{"rendered":"\u670d\u52a1\u5668\u9886\u57df\u7684\u8fd0\u7ef4\u6280\u5de7\u5168\u89e3\u6790\uff1a\u5b9e\u7528\u5e72\u8d27"},"content":{"rendered":"<h2>\u670d\u52a1\u5668\u9886\u57df\u7684\u8fd0\u7ef4\u6280\u5de7\u5168\u89e3\u6790&#xff1a;\u5b9e\u7528\u5e72\u8d27<\/h2>\n<p>\u5173\u952e\u8bcd&#xff1a;\u670d\u52a1\u5668\u8fd0\u7ef4\u3001Linux\u7cfb\u7edf\u7ba1\u7406\u3001\u6027\u80fd\u4f18\u5316\u3001\u76d1\u63a7\u544a\u8b66\u3001\u81ea\u52a8\u5316\u8fd0\u7ef4\u3001\u5b89\u5168\u52a0\u56fa\u3001\u6545\u969c\u6392\u67e5<\/p>\n<p>\u6458\u8981&#xff1a;\u672c\u6587\u5168\u9762\u89e3\u6790\u670d\u52a1\u5668\u8fd0\u7ef4\u9886\u57df\u7684\u6838\u5fc3\u6280\u5de7\u548c\u5b9e\u7528\u65b9\u6cd5&#xff0c;\u4ece\u57fa\u7840\u7684\u7cfb\u7edf\u7ba1\u7406\u5230\u9ad8\u7ea7\u7684\u6027\u80fd\u8c03\u4f18&#xff0c;\u6db5\u76d6Linux\u670d\u52a1\u5668\u8fd0\u7ef4\u5168\u751f\u547d\u5468\u671f\u7684\u5173\u952e\u73af\u8282\u3002\u6587\u7ae0\u5c06\u6df1\u5165\u63a2\u8ba8\u670d\u52a1\u5668\u914d\u7f6e\u4f18\u5316\u3001\u76d1\u63a7\u4f53\u7cfb\u642d\u5efa\u3001\u81ea\u52a8\u5316\u8fd0\u7ef4\u5b9e\u8df5\u3001\u5b89\u5168\u52a0\u56fa\u7b56\u7565\u4ee5\u53ca\u6545\u969c\u8bca\u65ad\u65b9\u6cd5&#xff0c;\u5e76\u63d0\u4f9b\u5927\u91cf\u53ef\u76f4\u63a5\u5e94\u7528\u4e8e\u751f\u4ea7\u73af\u5883\u7684\u5b9e\u7528\u4ee3\u7801\u548c\u914d\u7f6e\u793a\u4f8b\u3002\u65e0\u8bba\u60a8\u662f\u521d\u5165\u8fd0\u7ef4\u9886\u57df\u7684\u65b0\u624b&#xff0c;\u8fd8\u662f\u5e0c\u671b\u63d0\u5347\u6280\u80fd\u7684\u4e2d\u9ad8\u7ea7\u5de5\u7a0b\u5e08&#xff0c;\u672c\u6587\u90fd\u5c06\u4e3a\u60a8\u63d0\u4f9b\u6709\u4ef7\u503c\u7684\u53c2\u8003\u548c\u6307\u5bfc\u3002<\/p>\n<h3>1. \u80cc\u666f\u4ecb\u7ecd<\/h3>\n<h4>1.1 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\u9884\u671f\u8bfb\u8005<\/h4>\n<p>\u672c\u6587\u9002\u5408\u4ee5\u4e0b\u8bfb\u8005\u7fa4\u4f53&#xff1a;<\/p>\n<ul>\n<li>\u521d\u7ea7\u8fd0\u7ef4\u5de5\u7a0b\u5e08&#xff1a;\u5e0c\u671b\u7cfb\u7edf\u5b66\u4e60\u670d\u52a1\u5668\u8fd0\u7ef4\u57fa\u7840\u77e5\u8bc6<\/li>\n<li>\u5f00\u53d1\u4eba\u5458&#xff1a;\u9700\u8981\u4e86\u89e3\u670d\u52a1\u5668\u8fd0\u7ef4\u4ee5\u66f4\u597d\u5730\u90e8\u7f72\u548c\u7ef4\u62a4\u5e94\u7528<\/li>\n<li>\u7cfb\u7edf\u7ba1\u7406\u5458&#xff1a;\u5bfb\u6c42\u63d0\u5347\u8fd0\u7ef4\u6548\u7387\u548c\u7cfb\u7edf\u7a33\u5b9a\u6027\u7684\u4e13\u4e1a\u4eba\u58eb<\/li>\n<li>IT\u6280\u672f\u7ecf\u7406&#xff1a;\u9700\u8981\u5168\u9762\u4e86\u89e3\u8fd0\u7ef4\u5de5\u4f5c\u4ee5\u66f4\u597d\u5730\u7ba1\u7406\u6280\u672f\u56e2\u961f<\/li>\n<\/ul>\n<h4>1.3 \u6587\u6863\u7ed3\u6784\u6982\u8ff0<\/h4>\n<p>\u672c\u6587\u91c7\u7528\u7531\u6d45\u5165\u6df1\u7684\u7ed3\u6784&#xff0c;\u9996\u5148\u4ecb\u7ecd\u57fa\u7840\u8fd0\u7ef4\u6982\u5ff5&#xff0c;\u7136\u540e\u6df1\u5165\u63a2\u8ba8\u5404\u9879\u8fd0\u7ef4\u6280\u672f&#xff0c;\u6700\u540e\u63d0\u4f9b\u5b9e\u6218\u6848\u4f8b\u548c\u9ad8\u7ea7\u6280\u5de7\u3002\u6bcf\u4e2a\u7ae0\u8282\u90fd\u5305\u542b\u7406\u8bba\u8bb2\u89e3\u548c\u5b9e\u9645\u64cd\u4f5c\u793a\u4f8b&#xff0c;\u786e\u4fdd\u8bfb\u8005\u80fd\u591f\u5b66\u4ee5\u81f4\u7528\u3002<\/p>\n<h4>1.4 \u672f\u8bed\u8868<\/h4>\n<h5>1.4.1 \u6838\u5fc3\u672f\u8bed\u5b9a\u4e49<\/h5>\n<ul>\n<li>SSH&#xff1a;Secure Shell&#xff0c;\u7528\u4e8e\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u548c\u7ba1\u7406\u670d\u52a1\u5668\u7684\u534f\u8bae<\/li>\n<li>CRON&#xff1a;Linux\u7cfb\u7edf\u4e0b\u7684\u5b9a\u65f6\u4efb\u52a1\u8c03\u5ea6\u670d\u52a1<\/li>\n<li>Load Average&#xff1a;\u7cfb\u7edf\u8d1f\u8f7d\u5e73\u5747\u503c&#xff0c;\u53cd\u6620CPU\u4f7f\u7528\u60c5\u51b5\u7684\u6307\u6807<\/li>\n<li>I\/O Wait&#xff1a;CPU\u7b49\u5f85I\/O\u64cd\u4f5c\u5b8c\u6210\u7684\u65f6\u95f4\u767e\u5206\u6bd4<\/li>\n<li>RAID&#xff1a;\u72ec\u7acb\u78c1\u76d8\u5197\u4f59\u9635\u5217&#xff0c;\u63d0\u4f9b\u6570\u636e\u5197\u4f59\u548c\u6027\u80fd\u63d0\u5347\u7684\u5b58\u50a8\u6280\u672f<\/li>\n<\/ul>\n<h5>1.4.2 \u76f8\u5173\u6982\u5ff5\u89e3\u91ca<\/h5>\n<ul>\n<li>DevOps&#xff1a;\u5f00\u53d1\u8fd0\u7ef4\u4e00\u4f53\u5316\u7684\u5de5\u4f5c\u65b9\u6cd5\u8bba<\/li>\n<li>IaC&#xff1a;\u57fa\u7840\u8bbe\u65bd\u5373\u4ee3\u7801(Infrastructure as Code)<\/li>\n<li>CI\/CD&#xff1a;\u6301\u7eed\u96c6\u6210\/\u6301\u7eed\u4ea4\u4ed8\u7684\u8f6f\u4ef6\u5f00\u53d1\u5b9e\u8df5<\/li>\n<li>LVM&#xff1a;\u903b\u8f91\u5377\u7ba1\u7406\u5668&#xff0c;\u63d0\u4f9b\u7075\u6d3b\u7684\u78c1\u76d8\u7ba1\u7406\u80fd\u529b<\/li>\n<\/ul>\n<h5>1.4.3 \u7f29\u7565\u8bcd\u5217\u8868<\/h5>\n<table>\n<tr>\u7f29\u7565\u8bcd\u5168\u79f0\u4e2d\u6587\u89e3\u91ca<\/tr>\n<tbody>\n<tr>\n<td>SSH<\/td>\n<td>Secure Shell<\/td>\n<td>\u5b89\u5168\u5916\u58f3\u534f\u8bae<\/td>\n<\/tr>\n<tr>\n<td>CPU<\/td>\n<td>Central Processing Unit<\/td>\n<td>\u4e2d\u592e\u5904\u7406\u5668<\/td>\n<\/tr>\n<tr>\n<td>RAM<\/td>\n<td>Random Access Memory<\/td>\n<td>\u968f\u673a\u5b58\u53d6\u5b58\u50a8\u5668<\/td>\n<\/tr>\n<tr>\n<td>IOPS<\/td>\n<td>Input\/Output Operations Per Second<\/td>\n<td>\u6bcf\u79d2\u8f93\u5165\u8f93\u51fa\u64cd\u4f5c\u6570<\/td>\n<\/tr>\n<tr>\n<td>NIC<\/td>\n<td>Network Interface Card<\/td>\n<td>\u7f51\u7edc\u63a5\u53e3\u5361<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>2. 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:root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;} <\/p>\n<p>         <span id=\"L-L-A-B\" class=\"edgeLabel L-LS-A&#039; L-LE-B\"><\/span> <\/p>\n<p>         <span id=\"L-L-A-C\" class=\"edgeLabel L-LS-A&#039; L-LE-C\"><\/span> <\/p>\n<p>         <span id=\"L-L-A-D\" class=\"edgeLabel L-LS-A&#039; L-LE-D\"><\/span> <\/p>\n<p>         <span id=\"L-L-A-E\" class=\"edgeLabel L-LS-A&#039; L-LE-E\"><\/span> <\/p>\n<p>         <span id=\"L-L-A-F\" class=\"edgeLabel L-LS-A&#039; L-LE-F\"><\/span> <\/p>\n<p>         <span id=\"L-L-B-B1\" class=\"edgeLabel L-LS-B&#039; L-LE-B1\"><\/span> <\/p>\n<p>         <span id=\"L-L-B-B2\" class=\"edgeLabel L-LS-B&#039; L-LE-B2\"><\/span> <\/p>\n<p>         <span id=\"L-L-B-B3\" class=\"edgeLabel L-LS-B&#039; L-LE-B3\"><\/span> <\/p>\n<p>         <span id=\"L-L-C-C1\" class=\"edgeLabel L-LS-C&#039; L-LE-C1\"><\/span> <\/p>\n<p>         <span id=\"L-L-C-C2\" class=\"edgeLabel L-LS-C&#039; L-LE-C2\"><\/span> <\/p>\n<p>         <span id=\"L-L-C-C3\" class=\"edgeLabel L-LS-C&#039; L-LE-C3\"><\/span> <\/p>\n<p>         <span id=\"L-L-C-C4\" class=\"edgeLabel L-LS-C&#039; L-LE-C4\"><\/span> <\/p>\n<p>         <span id=\"L-L-D-D1\" class=\"edgeLabel L-LS-D&#039; L-LE-D1\"><\/span> <\/p>\n<p>         <span id=\"L-L-D-D2\" class=\"edgeLabel L-LS-D&#039; L-LE-D2\"><\/span> <\/p>\n<p>         <span id=\"L-L-D-D3\" class=\"edgeLabel L-LS-D&#039; L-LE-D3\"><\/span> <\/p>\n<p>         <span id=\"L-L-E-E1\" class=\"edgeLabel L-LS-E&#039; L-LE-E1\"><\/span> <\/p>\n<p>         <span id=\"L-L-E-E2\" class=\"edgeLabel L-LS-E&#039; L-LE-E2\"><\/span> <\/p>\n<p>         <span id=\"L-L-E-E3\" class=\"edgeLabel L-LS-E&#039; L-LE-E3\"><\/span> <\/p>\n<p>         <span id=\"L-L-F-F1\" class=\"edgeLabel L-LS-F&#039; L-LE-F1\"><\/span> <\/p>\n<p>         <span id=\"L-L-F-F2\" class=\"edgeLabel L-LS-F&#039; L-LE-F2\"><\/span> <\/p>\n<p>         <span id=\"L-L-F-F3\" class=\"edgeLabel L-LS-F&#039; L-LE-F3\"><\/span> <\/p>\n<p>           \u670d\u52a1\u5668\u8fd0\u7ef4 <\/p>\n<p>           \u7cfb\u7edf\u7ba1\u7406 <\/p>\n<p>           \u6027\u80fd\u4f18\u5316 <\/p>\n<p>           \u76d1\u63a7\u544a\u8b66 <\/p>\n<p>           \u5b89\u5168\u52a0\u56fa <\/p>\n<p>           \u81ea\u52a8\u5316\u8fd0\u7ef4 <\/p>\n<p>           \u7528\u6237\u6743\u9650\u7ba1\u7406 <\/p>\n<p>           \u670d\u52a1\u7ba1\u7406 <\/p>\n<p>           \u5b58\u50a8\u7ba1\u7406 <\/p>\n<p>           CPU\u4f18\u5316 <\/p>\n<p>           \u5185\u5b58\u4f18\u5316 <\/p>\n<p>           \u78c1\u76d8I\/O\u4f18\u5316 <\/p>\n<p>           \u7f51\u7edc\u4f18\u5316 <\/p>\n<p>           \u6307\u6807\u91c7\u96c6 <\/p>\n<p>           \u53ef\u89c6\u5316 <\/p>\n<p>           \u544a\u8b66\u7b56\u7565 <\/p>\n<p>           \u9632\u706b\u5899\u914d\u7f6e <\/p>\n<p>           \u6f0f\u6d1e\u4fee\u590d <\/p>\n<p>           \u5165\u4fb5\u68c0\u6d4b <\/p>\n<p>           \u914d\u7f6e\u7ba1\u7406 <\/p>\n<p>           \u6279\u91cf\u64cd\u4f5c <\/p>\n<p>           \u6301\u7eed\u90e8\u7f72 <\/p>\n<p>\u670d\u52a1\u5668\u8fd0\u7ef4\u7684\u6838\u5fc3\u5728\u4e8e\u5e73\u8861\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3001\u6027\u80fd\u3001\u5b89\u5168\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u4f18\u79c0\u7684\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u9700\u8981\u5728\u8fd9\u51e0\u4e2a\u7ef4\u5ea6\u4e4b\u95f4\u627e\u5230\u6700\u4f73\u5e73\u8861\u70b9\u3002<\/p>\n<h4>2.1 \u8fd0\u7ef4\u751f\u547d\u5468\u671f\u6a21\u578b<\/h4>\n<p>  #mermaid-svg-kW77PxV4mH8Ve9e1 {font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}#mermaid-svg-kW77PxV4mH8Ve9e1 .error-icon{fill:#552222;}#mermaid-svg-kW77PxV4mH8Ve9e1 .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-kW77PxV4mH8Ve9e1 .edge-thickness-normal{stroke-width:2px;}#mermaid-svg-kW77PxV4mH8Ve9e1 .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-kW77PxV4mH8Ve9e1 .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-kW77PxV4mH8Ve9e1 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#aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-kW77PxV4mH8Ve9e1 :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;} <\/p>\n<p>         <span id=\"L-L-A-B\" class=\"edgeLabel L-LS-A&#039; L-LE-B\"><\/span> <\/p>\n<p>         <span id=\"L-L-B-C\" class=\"edgeLabel L-LS-B&#039; L-LE-C\"><\/span> <\/p>\n<p>         <span id=\"L-L-C-D\" class=\"edgeLabel L-LS-C&#039; L-LE-D\"><\/span> <\/p>\n<p>         <span id=\"L-L-D-E\" class=\"edgeLabel L-LS-D&#039; L-LE-E\"><\/span> <\/p>\n<p>         <span id=\"L-L-E-F\" class=\"edgeLabel L-LS-E&#039; L-LE-F\"><\/span> <\/p>\n<p>         <span id=\"L-L-F-G\" class=\"edgeLabel L-LS-F&#039; L-LE-G\"><\/span> <\/p>\n<p>         <span id=\"L-L-G-A\" class=\"edgeLabel L-LS-G&#039; L-LE-A\"><\/span> <\/p>\n<p>           \u89c4\u5212\u90e8\u7f72 <\/p>\n<p>           \u914d\u7f6e\u4f18\u5316 <\/p>\n<p>           \u76d1\u63a7\u544a\u8b66 <\/p>\n<p>           \u6027\u80fd\u8c03\u4f18 <\/p>\n<p>           \u5b89\u5168\u52a0\u56fa <\/p>\n<p>           \u6545\u969c\u5904\u7406 <\/p>\n<p>           \u81ea\u52a8\u5316\u6539\u8fdb <\/p>\n<p>\u8fd9\u4e2a\u5faa\u73af\u6a21\u578b\u5c55\u793a\u4e86\u8fd0\u7ef4\u5de5\u4f5c\u7684\u6301\u7eed\u6539\u8fdb\u7279\u6027\u3002\u6bcf\u4e2a\u9636\u6bb5\u90fd\u4e3a\u4e0b\u4e00\u9636\u6bb5\u63d0\u4f9b\u53cd\u9988&#xff0c;\u5f62\u6210\u826f\u6027\u5faa\u73af\u3002<\/p>\n<h3>3. \u6838\u5fc3\u7b97\u6cd5\u539f\u7406 &amp; \u5177\u4f53\u64cd\u4f5c\u6b65\u9aa4<\/h3>\n<h4>3.1 \u7cfb\u7edf\u6027\u80fd\u5206\u6790\u7b97\u6cd5<\/h4>\n<p>\u670d\u52a1\u5668\u6027\u80fd\u5206\u6790\u7684\u6838\u5fc3\u662f\u8bc6\u522b\u7cfb\u7edf\u74f6\u9888\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Python\u5b9e\u73b0\u7684\u7b80\u5355\u6027\u80fd\u5206\u6790\u5de5\u5177&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> psutil<br \/>\n<span class=\"token keyword\">import<\/span> time<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">analyze_system<\/span><span class=\"token punctuation\">(<\/span>interval<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;<br \/>\n    \u7cfb\u7edf\u6027\u80fd\u5206\u6790\u51fd\u6570<br \/>\n    :param interval: \u91c7\u6837\u95f4\u9694(\u79d2)<br \/>\n    &#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token comment\"># CPU\u4f7f\u7528\u7387<\/span><br \/>\n        cpu_percent <span class=\"token operator\">&#061;<\/span> psutil<span class=\"token punctuation\">.<\/span>cpu_percent<span class=\"token punctuation\">(<\/span>interval<span class=\"token operator\">&#061;<\/span>interval<span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u5185\u5b58\u4f7f\u7528\u60c5\u51b5<\/span><br \/>\n        mem <span class=\"token operator\">&#061;<\/span> psutil<span class=\"token punctuation\">.<\/span>virtual_memory<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u78c1\u76d8I\/O<\/span><br \/>\n        disk_io <span class=\"token operator\">&#061;<\/span> psutil<span class=\"token punctuation\">.<\/span>disk_io_counters<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u7f51\u7edcI\/O<\/span><br \/>\n        net_io <span class=\"token operator\">&#061;<\/span> psutil<span class=\"token punctuation\">.<\/span>net_io_counters<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\\\\n&#8212; \u7cfb\u7edf\u6027\u80fd\u62a5\u544a <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>time<span class=\"token punctuation\">.<\/span>strftime<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;%Y-%m-%d %H:%M:%S&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> &#8212;&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;CPU\u4f7f\u7528\u7387: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>cpu_percent<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">%&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u5185\u5b58\u4f7f\u7528: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>mem<span class=\"token punctuation\">.<\/span>used<span class=\"token operator\">\/<\/span><span class=\"token number\">1024<\/span><span class=\"token operator\">\/<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">MB \/ <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>mem<span class=\"token punctuation\">.<\/span>total<span class=\"token operator\">\/<\/span><span class=\"token number\">1024<\/span><span class=\"token operator\">\/<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">MB (<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>mem<span class=\"token punctuation\">.<\/span>percent<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">%)&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u78c1\u76d8\u8bfb\u53d6: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>disk_io<span class=\"token punctuation\">.<\/span>read_bytes<span class=\"token operator\">\/<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">KB, \u5199\u5165: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>disk_io<span class=\"token punctuation\">.<\/span>write_bytes<span class=\"token operator\">\/<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">KB&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u7f51\u7edc\u63a5\u6536: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>net_io<span class=\"token punctuation\">.<\/span>bytes_recv<span class=\"token operator\">\/<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">KB, \u53d1\u9001: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>net_io<span class=\"token punctuation\">.<\/span>bytes_sent<span class=\"token operator\">\/<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">KB&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u5224\u65ad\u662f\u5426\u51fa\u73b0\u6027\u80fd\u74f6\u9888<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> cpu_percent <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">80<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8b66\u544a: CPU\u4f7f\u7528\u7387\u8fc7\u9ad8!&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> mem<span class=\"token punctuation\">.<\/span>percent <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">85<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8b66\u544a: \u5185\u5b58\u4f7f\u7528\u7387\u8fc7\u9ad8!&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> __name__ <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;__main__&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    analyze_system<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h4>3.2 \u81ea\u52a8\u5316\u8fd0\u7ef4\u4efb\u52a1\u8c03\u5ea6\u7b97\u6cd5<\/h4>\n<p>\u81ea\u52a8\u5316\u8fd0\u7ef4\u7684\u6838\u5fc3\u662f\u4efb\u52a1\u8c03\u5ea6\u548c\u6267\u884c\u3002\u4ee5\u4e0b\u662f\u57fa\u4e8e\u4f18\u5148\u7ea7\u961f\u5217\u7684\u4efb\u52a1\u8c03\u5ea6\u7b97\u6cd5&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> heapq<br \/>\n<span class=\"token keyword\">import<\/span> threading<br \/>\n<span class=\"token keyword\">import<\/span> time<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Scheduler<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">__init__<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>tasks <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>lock <span class=\"token operator\">&#061;<\/span> threading<span class=\"token punctuation\">.<\/span>Lock<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>condition <span class=\"token operator\">&#061;<\/span> threading<span class=\"token punctuation\">.<\/span>Condition<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">add_task<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> task<span class=\"token punctuation\">,<\/span> priority<span class=\"token operator\">&#061;<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u6dfb\u52a0\u4efb\u52a1\u5230\u8c03\u5ea6\u961f\u5217&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">with<\/span> self<span class=\"token punctuation\">.<\/span>lock<span class=\"token punctuation\">:<\/span><br \/>\n            heapq<span class=\"token punctuation\">.<\/span>heappush<span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>tasks<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span>priority<span class=\"token punctuation\">,<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> task<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>condition<span class=\"token punctuation\">.<\/span>notify<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">run<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u6267\u884c\u8c03\u5ea6\u4efb\u52a1&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">with<\/span> self<span class=\"token punctuation\">.<\/span>condition<span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token keyword\">while<\/span> <span class=\"token keyword\">not<\/span> self<span class=\"token punctuation\">.<\/span>tasks<span class=\"token punctuation\">:<\/span><br \/>\n                    self<span class=\"token punctuation\">.<\/span>condition<span class=\"token punctuation\">.<\/span>wait<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>                priority<span class=\"token punctuation\">,<\/span> timestamp<span class=\"token punctuation\">,<\/span> task <span class=\"token operator\">&#061;<\/span> heapq<span class=\"token punctuation\">.<\/span>heappop<span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>tasks<span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                task<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u4efb\u52a1\u6267\u884c\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Task<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">__init__<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> name<span class=\"token punctuation\">,<\/span> func<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">*<\/span>args<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">**<\/span>kwargs<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>name <span class=\"token operator\">&#061;<\/span> name<br \/>\n        self<span class=\"token punctuation\">.<\/span>func <span class=\"token operator\">&#061;<\/span> func<br \/>\n        self<span class=\"token punctuation\">.<\/span>args <span class=\"token operator\">&#061;<\/span> args<br \/>\n        self<span class=\"token punctuation\">.<\/span>kwargs <span class=\"token operator\">&#061;<\/span> kwargs<\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">execute<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u5f00\u59cb\u6267\u884c\u4efb\u52a1: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>func<span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>self<span class=\"token punctuation\">.<\/span>args<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">**<\/span>self<span class=\"token punctuation\">.<\/span>kwargs<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u4efb\u52a1\u5b8c\u6210: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u793a\u4f8b\u4f7f\u7528<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">backup_database<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6267\u884c\u6570\u636e\u5e93\u5907\u4efd&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    time<span class=\"token punctuation\">.<\/span>sleep<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">clean_logs<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6e05\u7406\u65e5\u5fd7\u6587\u4ef6&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    time<span class=\"token punctuation\">.<\/span>sleep<span class=\"token punctuation\">(<\/span><span class=\"token number\">0.5<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>scheduler <span class=\"token operator\">&#061;<\/span> Scheduler<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\nscheduler<span class=\"token punctuation\">.<\/span>add_task<span class=\"token punctuation\">(<\/span>Task<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u65e5\u5e38\u5907\u4efd&#034;<\/span><span class=\"token punctuation\">,<\/span> backup_database<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> priority<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\nscheduler<span class=\"token punctuation\">.<\/span>add_task<span class=\"token punctuation\">(<\/span>Task<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u65e5\u5fd7\u6e05\u7406&#034;<\/span><span class=\"token punctuation\">,<\/span> clean_logs<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> priority<span class=\"token operator\">&#061;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u542f\u52a8\u8c03\u5ea6\u5668\u7ebf\u7a0b<\/span><br \/>\nthreading<span class=\"token punctuation\">.<\/span>Thread<span class=\"token punctuation\">(<\/span>target<span class=\"token operator\">&#061;<\/span>scheduler<span class=\"token punctuation\">.<\/span>run<span class=\"token punctuation\">,<\/span> daemon<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>start<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u6a21\u62df\u6dfb\u52a0\u4efb\u52a1<\/span><br \/>\ntime<span class=\"token punctuation\">.<\/span>sleep<span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><br \/>\nscheduler<span class=\"token punctuation\">.<\/span>add_task<span class=\"token punctuation\">(<\/span>Task<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u7d27\u6025\u8865\u4e01&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">lambda<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5e94\u7528\u7d27\u6025\u8865\u4e01&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> priority<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h3>4. \u6570\u5b66\u6a21\u578b\u548c\u516c\u5f0f &amp; \u8be6\u7ec6\u8bb2\u89e3 &amp; \u4e3e\u4f8b\u8bf4\u660e<\/h3>\n<h4>4.1 \u7cfb\u7edf\u8d1f\u8f7d\u6a21\u578b<\/h4>\n<p>\u7cfb\u7edf\u8d1f\u8f7d(Load Average)\u662f\u8861\u91cf\u670d\u52a1\u5668\u6027\u80fd\u7684\u91cd\u8981\u6307\u6807&#xff0c;\u901a\u5e38\u8868\u793a\u4e3a1\u5206\u949f\u30015\u5206\u949f\u548c15\u5206\u949f\u7684\u5e73\u5747\u503c\u3002\u5176\u6570\u5b66\u6a21\u578b\u53ef\u4ee5\u8868\u793a\u4e3a&#xff1a;<\/p>\n<p><span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"> <\/p>\n<p>          Load\u00a0Average <\/p>\n<p>          &#061; <\/p>\n<p>             \u2211 <\/p>\n<p>              i <\/p>\n<p>              &#061; <\/p>\n<p>              1 <\/p>\n<p>             n <\/p>\n<p>             e <\/p>\n<p>              \u2212 <\/p>\n<p>              \u03bb <\/p>\n<p>              ( <\/p>\n<p>              t <\/p>\n<p>              \u2212 <\/p>\n<p>               t <\/p>\n<p>               i <\/p>\n<p>              ) <\/p>\n<p>            1 <\/p>\n<p>            \u2212 <\/p>\n<p>             e <\/p>\n<p>              \u2212 <\/p>\n<p>              \u03bb <\/p>\n<p>              T <\/p>\n<p>         \\\\text{Load Average} &#061; \\\\frac{\\\\sum_{i&#061;1}^{n} e^{-\\\\lambda(t-t_i)}}{1 &#8211; e^{-\\\\lambda T}} <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"mord text\"><span class=\"mord\">Load\u00a0Average<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 2.347em;vertical-align: -0.7693em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.5777em\"><span class=\"\" style=\"top: -2.314em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord\">1<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\">e<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.7751em\"><span class=\"\" style=\"top: -2.989em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">\u2212<\/span><span class=\"mord mathnormal mtight\">\u03bb<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1389em\">T<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.6897em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mop\"><span class=\"mop op-symbol small-op\" style=\"position: relative;top: 0em\">\u2211<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8043em\"><span class=\"\" style=\"top: -2.4003em;margin-left: 0em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mrel mtight\">&#061;<\/span><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.2029em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">n<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2997em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\">e<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.888em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">\u2212<\/span><span class=\"mord mathnormal mtight\">\u03bb<\/span><span class=\"mopen mtight\">(<\/span><span class=\"mord mathnormal mtight\">t<\/span><span class=\"mbin mtight\">\u2212<\/span><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">t<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3281em\"><span class=\"\" style=\"top: -2.357em;margin-left: 0em;margin-right: 0.0714em\"><span class=\"pstrut\" style=\"height: 2.5em\"><\/span><span class=\"sizing reset-size3 size1 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.143em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mclose mtight\">)<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.7693em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li><span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           t <\/p>\n<p>           i <\/p>\n<p>         t_i <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7651em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\">t<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: 0em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u662f\u7b2ci\u4e2a\u8fdb\u7a0b\u5230\u8fbe\u7684\u65f6\u95f4<\/li>\n<li><span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>          \u03bb <\/p>\n<p>         \\\\lambda <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord mathnormal\">\u03bb<\/span><\/span><\/span><\/span><\/span> \u662f\u8870\u51cf\u7cfb\u6570<\/li>\n<li><span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>          T <\/p>\n<p>         T <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">T<\/span><\/span><\/span><\/span><\/span> \u662f\u65f6\u95f4\u7a97\u53e3(1,5\u621615\u5206\u949f)<\/li>\n<\/ul>\n<h4>4.2 \u78c1\u76d8I\/O\u6027\u80fd\u6a21\u578b<\/h4>\n<p>\u78c1\u76d8\u6027\u80fd\u901a\u5e38\u7528\u4ee5\u4e0b\u516c\u5f0f\u8bc4\u4f30&#xff1a;<\/p>\n<p><span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"> <\/p>\n<p>          \u54cd\u5e94\u65f6\u95f4 <\/p>\n<p>          &#061; <\/p>\n<p>          \u5bfb\u9053\u65f6\u95f4 <\/p>\n<p>          &#043; <\/p>\n<p>          \u65cb\u8f6c\u5ef6\u8fdf <\/p>\n<p>          &#043; <\/p>\n<p>          \u4f20\u8f93\u65f6\u95f4 <\/p>\n<p>         \\\\text{\u54cd\u5e94\u65f6\u95f4} &#061; \\\\text{\u5bfb\u9053\u65f6\u95f4} &#043; \\\\text{\u65cb\u8f6c\u5ef6\u8fdf} &#043; \\\\text{\u4f20\u8f93\u65f6\u95f4} <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u54cd\u5e94\u65f6\u95f4<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7667em;vertical-align: -0.0833em\"><\/span><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u5bfb\u9053\u65f6\u95f4<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7667em;vertical-align: -0.0833em\"><\/span><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u65cb\u8f6c\u5ef6\u8fdf<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u4f20\u8f93\u65f6\u95f4<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\u5bfb\u9053\u65f6\u95f4&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           T <\/p>\n<p>           seek <\/p>\n<p>          &#061; <\/p>\n<p>          a <\/p>\n<p>          &#043; <\/p>\n<p>          b <\/p>\n<p>           d <\/p>\n<p>         T_{\\\\text{seek}} &#061; a &#043; b\\\\sqrt{d} <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">T<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3361em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1389em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord mtight\">seek<\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6667em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.04em;vertical-align: -0.1078em\"><\/span><span class=\"mord mathnormal\">b<\/span><span class=\"mord sqrt\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.9322em\"><span class=\"svg-align\" style=\"top: -3em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\" style=\"padding-left: 0.833em\"><span class=\"mord mathnormal\">d<\/span><\/span><\/span><span class=\"\" style=\"top: -2.8922em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"hide-tail\" style=\"min-width: 0.853em;height: 1.08em\"> <\/p>\n<p>            <\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.1078em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n<li>\u65cb\u8f6c\u5ef6\u8fdf&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           T <\/p>\n<p>           rotation <\/p>\n<p>          &#061; <\/p>\n<p>           1 <\/p>\n<p>            2 <\/p>\n<p>            \u00d7 <\/p>\n<p>            RPM <\/p>\n<p>          \u00d7 <\/p>\n<p>          60 <\/p>\n<p>          , <\/p>\n<p>          000 <\/p>\n<p>          ms <\/p>\n<p>         T_{\\\\text{rotation}} &#061; \\\\frac{1}{2 \\\\times \\\\text{RPM}} \\\\times 60,000\\\\text{ms} <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">T<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3175em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1389em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord mtight\">rotation<\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.2484em;vertical-align: -0.4033em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em\"><span class=\"\" style=\"top: -2.655em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">2<\/span><span class=\"mbin mtight\">\u00d7<\/span><span class=\"mord text mtight\"><span class=\"mord mtight\">RPM<\/span><\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.394em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.4033em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8389em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">60<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\">000<\/span><span class=\"mord text\"><span class=\"mord\">ms<\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n<li>\u4f20\u8f93\u65f6\u95f4&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           T <\/p>\n<p>           transfer <\/p>\n<p>          &#061; <\/p>\n<p>           \u6570\u636e\u5927\u5c0f <\/p>\n<p>           \u4f20\u8f93\u901f\u7387 <\/p>\n<p>         T_{\\\\text{transfer}} &#061; \\\\frac{\\\\text{\u6570\u636e\u5927\u5c0f}}{\\\\text{\u4f20\u8f93\u901f\u7387}} <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">T<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3361em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1389em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord mtight\">transfer<\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.2173em;vertical-align: -0.345em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8723em\"><span class=\"\" style=\"top: -2.655em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord cjk_fallback mtight\">\u4f20\u8f93\u901f\u7387<\/span><\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.394em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord cjk_fallback mtight\">\u6570\u636e\u5927\u5c0f<\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.345em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ul>\n<p>\u4e3e\u4f8b&#xff1a;\u4e00\u4e2a7200RPM\u7684\u78c1\u76d8&#xff0c;\u5e73\u5747\u5bfb\u9053\u65f6\u95f48ms&#xff0c;\u4f20\u8f93\u901f\u7387100MB\/s&#xff0c;\u8bfb\u53d64KB\u6570\u636e\u7684\u54cd\u5e94\u65f6\u95f4\u8ba1\u7b97&#xff1a;<\/p>\n<p><span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"> <\/p>\n<p>           T <\/p>\n<p>           rotation <\/p>\n<p>          &#061; <\/p>\n<p>           1 <\/p>\n<p>            2 <\/p>\n<p>            \u00d7 <\/p>\n<p>            7200 <\/p>\n<p>          \u00d7 <\/p>\n<p>          60000 <\/p>\n<p>          \u2248 <\/p>\n<p>          4.17 <\/p>\n<p>          ms <\/p>\n<p>           T <\/p>\n<p>           transfer <\/p>\n<p>          &#061; <\/p>\n<p>           4 <\/p>\n<p>            100 <\/p>\n<p>            \u00d7 <\/p>\n<p>            1024 <\/p>\n<p>          \u2248 <\/p>\n<p>          0.039 <\/p>\n<p>          ms <\/p>\n<p>          \u603b\u54cd\u5e94\u65f6\u95f4 <\/p>\n<p>          &#061; <\/p>\n<p>          8 <\/p>\n<p>          &#043; <\/p>\n<p>          4.17 <\/p>\n<p>          &#043; <\/p>\n<p>          0.039 <\/p>\n<p>          \u2248 <\/p>\n<p>          12.2 <\/p>\n<p>          ms <\/p>\n<p>         T_{\\\\text{rotation}} &#061; \\\\frac{1}{2 \\\\times 7200} \\\\times 60000 \\\\approx 4.17\\\\text{ms} \\\\\\\\ T_{\\\\text{transfer}} &#061; \\\\frac{4}{100 \\\\times 1024} \\\\approx 0.039\\\\text{ms} \\\\\\\\ \\\\text{\u603b\u54cd\u5e94\u65f6\u95f4} &#061; 8 &#043; 4.17 &#043; 0.039 \\\\approx 12.2\\\\text{ms} <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">T<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3175em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1389em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord mtight\">rotation<\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 2.0908em;vertical-align: -0.7693em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.3214em\"><span class=\"\" style=\"top: -2.314em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord\">2<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mord\">7200<\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.677em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord\">1<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.7693em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">60000<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2248<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">4.17<\/span><span class=\"mord text\"><span class=\"mord\">ms<\/span><\/span><\/span><span class=\"mspace newline\"><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">T<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3361em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1389em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord mtight\">transfer<\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 2.0908em;vertical-align: -0.7693em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.3214em\"><span class=\"\" style=\"top: -2.314em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord\">100<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mord\">1024<\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.677em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord\">4<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.7693em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2248<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">0.039<\/span><span class=\"mord text\"><span class=\"mord\">ms<\/span><\/span><\/span><span class=\"mspace newline\"><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u603b\u54cd\u5e94\u65f6\u95f4<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7278em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">8<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7278em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">4.17<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">0.039<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2248<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">12.2<\/span><span class=\"mord text\"><span class=\"mord\">ms<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<h4>4.3 \u7f51\u7edc\u541e\u5410\u91cf\u8ba1\u7b97<\/h4>\n<p>\u7f51\u7edc\u541e\u5410\u91cf\u53d7\u9650\u4e8e\u5e26\u5bbd\u3001\u5ef6\u8fdf\u548c\u534f\u8bae\u5f00\u9500&#xff1a;<\/p>\n<p><span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"> <\/p>\n<p>          \u5b9e\u9645\u541e\u5410\u91cf <\/p>\n<p>          &#061; <\/p>\n<p>           \u7a97\u53e3\u5927\u5c0f <\/p>\n<p>           RTT <\/p>\n<p>          \u00d7 <\/p>\n<p>          ( <\/p>\n<p>          1 <\/p>\n<p>          \u2212 <\/p>\n<p>          \u4e22\u5305\u7387 <\/p>\n<p>          ) <\/p>\n<p>         \\\\text{\u5b9e\u9645\u541e\u5410\u91cf} &#061; \\\\frac{\\\\text{\u7a97\u53e3\u5927\u5c0f}}{\\\\text{RTT}} \\\\times (1 &#8211; \\\\text{\u4e22\u5305\u7387}) <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u5b9e\u9645\u541e\u5410\u91cf<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 2.0463em;vertical-align: -0.686em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.3603em\"><span class=\"\" style=\"top: -2.314em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord text\"><span class=\"mord\">RTT<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.677em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u7a97\u53e3\u5927\u5c0f<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.686em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">(<\/span><span class=\"mord\">1<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u4e22\u5305\u7387<\/span><\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u5176\u4e2dRTT(Round Trip Time)\u662f\u5f80\u8fd4\u65f6\u5ef6\u3002\u4f8b\u5982&#xff0c;TCP\u7a97\u53e3\u5927\u5c0f\u4e3a64KB&#xff0c;RTT\u4e3a50ms&#xff0c;\u4e22\u5305\u73870.1%&#xff1a;<\/p>\n<p><span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"> <\/p>\n<p>          \u541e\u5410\u91cf <\/p>\n<p>          &#061; <\/p>\n<p>            65536 <\/p>\n<p>            \u00d7 <\/p>\n<p>            8 <\/p>\n<p>           0.05 <\/p>\n<p>          \u00d7 <\/p>\n<p>          0.999 <\/p>\n<p>          \u2248 <\/p>\n<p>          10.4 <\/p>\n<p>          Mbps <\/p>\n<p>         \\\\text{\u541e\u5410\u91cf} &#061; \\\\frac{65536 \\\\times 8}{0.05} \\\\times 0.999 \\\\approx 10.4\\\\text{Mbps} <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord text\"><span class=\"mord cjk_fallback\">\u541e\u5410\u91cf<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 2.0074em;vertical-align: -0.686em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.3214em\"><span class=\"\" style=\"top: -2.314em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord\">0.05<\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.677em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord\">65536<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mord\">8<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.686em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">0.999<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2248<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">10.4<\/span><span class=\"mord text\"><span class=\"mord\">Mbps<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<h3>5. \u9879\u76ee\u5b9e\u6218&#xff1a;\u4ee3\u7801\u5b9e\u9645\u6848\u4f8b\u548c\u8be6\u7ec6\u89e3\u91ca\u8bf4\u660e<\/h3>\n<h4>5.1 \u5f00\u53d1\u73af\u5883\u642d\u5efa<\/h4>\n<h5>5.1.1 \u57fa\u7840\u73af\u5883\u51c6\u5907<\/h5>\n<p>\u63a8\u8350\u4f7f\u7528\u4ee5\u4e0b\u73af\u5883\u8fdb\u884c\u670d\u52a1\u5668\u8fd0\u7ef4\u5f00\u53d1&#xff1a;<\/p>\n<ul>\n<li>\u64cd\u4f5c\u7cfb\u7edf&#xff1a;Ubuntu Server LTS \u6216 CentOS<\/li>\n<li>Python\u73af\u5883&#xff1a;Python 3.8&#043;<\/li>\n<li>\u5fc5\u8981\u5de5\u5177&#xff1a;\n<ul>\n<li>git<\/li>\n<li>tmux<\/li>\n<li>vim\/emacs<\/li>\n<li>htop<\/li>\n<li>iftop<\/li>\n<li>iotop<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u5b89\u88c5\u547d\u4ee4\u793a\u4f8b(Ubuntu)&#xff1a;<\/p>\n<p><span class=\"token function\">sudo<\/span> <span class=\"token function\">apt<\/span> update<br \/>\n<span class=\"token function\">sudo<\/span> <span class=\"token function\">apt<\/span> <span class=\"token function\">install<\/span> -y python3 <span class=\"token function\">git<\/span> tmux <span class=\"token function\">vim<\/span> <span class=\"token function\">htop<\/span> iftop iotop<\/p>\n<h5>5.1.2 \u865a\u62df\u5316\u73af\u5883\u914d\u7f6e<\/h5>\n<p>\u4f7f\u7528Vagrant\u5feb\u901f\u521b\u5efa\u6d4b\u8bd5\u73af\u5883&#xff1a;<\/p>\n<p><span class=\"token comment\"># Vagrantfile<\/span><br \/>\n<span class=\"token constant\">Vagrant<\/span><span class=\"token punctuation\">.<\/span>configure<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;2&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">do<\/span> <span class=\"token operator\">|<\/span>config<span class=\"token operator\">|<\/span><br \/>\n  config<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>box <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;ubuntu\/focal64&#034;<\/span><\/p>\n<p>  config<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>define <span class=\"token string\">&#034;web01&#034;<\/span> <span class=\"token keyword\">do<\/span> <span class=\"token operator\">|<\/span>web<span class=\"token operator\">|<\/span><br \/>\n    web<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>hostname <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;web01&#034;<\/span><br \/>\n    web<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>network <span class=\"token string\">&#034;private_network&#034;<\/span><span class=\"token punctuation\">,<\/span> ip<span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;192.168.33.10&#034;<\/span><br \/>\n    web<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>provider <span class=\"token string\">&#034;virtualbox&#034;<\/span> <span class=\"token keyword\">do<\/span> <span class=\"token operator\">|<\/span>v<span class=\"token operator\">|<\/span><br \/>\n      v<span class=\"token punctuation\">.<\/span>memory <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2048<\/span><br \/>\n      v<span class=\"token punctuation\">.<\/span>cpus <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><br \/>\n    <span class=\"token keyword\">end<\/span><br \/>\n  <span class=\"token keyword\">end<\/span><\/p>\n<p>  config<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>define <span class=\"token string\">&#034;db01&#034;<\/span> <span class=\"token keyword\">do<\/span> <span class=\"token operator\">|<\/span>db<span class=\"token operator\">|<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>hostname <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;db01&#034;<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>network <span class=\"token string\">&#034;private_network&#034;<\/span><span class=\"token punctuation\">,<\/span> ip<span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;192.168.33.11&#034;<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>vm<span class=\"token punctuation\">.<\/span>provider <span class=\"token string\">&#034;virtualbox&#034;<\/span> <span class=\"token keyword\">do<\/span> <span class=\"token operator\">|<\/span>v<span class=\"token operator\">|<\/span><br \/>\n      v<span class=\"token punctuation\">.<\/span>memory <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">4096<\/span><br \/>\n      v<span class=\"token punctuation\">.<\/span>cpus <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><br \/>\n    <span class=\"token keyword\">end<\/span><br \/>\n  <span class=\"token keyword\">end<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<h4>5.2 \u6e90\u4ee3\u7801\u8be6\u7ec6\u5b9e\u73b0\u548c\u4ee3\u7801\u89e3\u8bfb<\/h4>\n<h5>5.2.1 \u81ea\u52a8\u5316\u670d\u52a1\u5668\u914d\u7f6e\u68c0\u67e5\u811a\u672c<\/h5>\n<p><span class=\"token comment\">#!\/usr\/bin\/env python3<\/span><br \/>\n<span class=\"token keyword\">import<\/span> subprocess<br \/>\n<span class=\"token keyword\">import<\/span> platform<br \/>\n<span class=\"token keyword\">import<\/span> re<br \/>\n<span class=\"token keyword\">from<\/span> datetime <span class=\"token keyword\">import<\/span> datetime<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ServerAudit<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">__init__<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>report <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#039;timestamp&#039;<\/span><span class=\"token punctuation\">:<\/span> datetime<span class=\"token punctuation\">.<\/span>now<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>isoformat<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#039;system&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#039;security&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#039;performance&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#039;issues&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">run_checks<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>check_system_info<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>check_users<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>check_ssh_config<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>check_firewall<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>check_disk_usage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>check_cron_jobs<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>check_services<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>check_kernel_params<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> self<span class=\"token punctuation\">.<\/span>report<\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">check_system_info<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u6536\u96c6\u57fa\u672c\u7cfb\u7edf\u4fe1\u606f&#034;&#034;&#034;<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;system&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;hostname&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> platform<span class=\"token punctuation\">.<\/span>node<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;system&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;os&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> platform<span class=\"token punctuation\">.<\/span>system<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#039; &#039;<\/span> <span class=\"token operator\">&#043;<\/span> platform<span class=\"token punctuation\">.<\/span>release<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;system&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;cpu&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>_get_cpu_info<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;system&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;memory&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>_get_memory_info<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">_get_cpu_info<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">with<\/span> <span class=\"token builtin\">open<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/proc\/cpuinfo&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> f<span class=\"token punctuation\">:<\/span><br \/>\n                cpu_info <span class=\"token operator\">&#061;<\/span> f<span class=\"token punctuation\">.<\/span>read<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            model <span class=\"token operator\">&#061;<\/span> re<span class=\"token punctuation\">.<\/span>search<span class=\"token punctuation\">(<\/span><span class=\"token string\">r&#039;model name\\\\s*:\\\\s*(.&#043;)&#039;<\/span><span class=\"token punctuation\">,<\/span> cpu_info<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>group<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            cores <span class=\"token operator\">&#061;<\/span> re<span class=\"token punctuation\">.<\/span>findall<span class=\"token punctuation\">(<\/span><span class=\"token string\">r&#039;processor\\\\s*:\\\\s*\\\\d&#043;&#039;<\/span><span class=\"token punctuation\">,<\/span> cpu_info<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#039;model&#039;<\/span><span class=\"token punctuation\">:<\/span> model<span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#039;cores&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>cores<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;issues&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u83b7\u53d6CPU\u4fe1\u606f\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\"># \u5176\u4ed6\u68c0\u67e5\u65b9\u6cd5&#8230;<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">generate_report<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> filename<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u751f\u6210HTML\u683c\u5f0f\u7684\u62a5\u544a&#034;&#034;&#034;<\/span><br \/>\n        html <span class=\"token operator\">&#061;<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#034;&#034;<br \/>\n        &lt;!DOCTYPE html&gt;<br \/>\n        &lt;html&gt;<br \/>\n        &lt;head&gt;<br \/>\n            &lt;title&gt;\u670d\u52a1\u5668\u5ba1\u8ba1\u62a5\u544a &#8211; <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;system&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;hostname&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&lt;\/title&gt;<br \/>\n            &lt;style&gt;<br \/>\n                body {{ font-family: Arial, sans-serif; margin: 20px; }}<br \/>\n                h1 {{ color: #333; }}<br \/>\n                .section {{ margin-bottom: 20px; border: 1px solid #ddd; padding: 15px; border-radius: 5px; }}<br \/>\n                .issue {{ color: red; }}<br \/>\n                table {{ border-collapse: collapse; width: 100%; }}<br \/>\n                th, td {{ border: 1px solid #ddd; padding: 8px; text-align: left; }}<br \/>\n                th {{ background-color: #f2f2f2; }}<br \/>\n            &lt;\/style&gt;<br \/>\n        &lt;\/head&gt;<br \/>\n        &lt;body&gt;<br \/>\n            &lt;h1&gt;\u670d\u52a1\u5668\u5ba1\u8ba1\u62a5\u544a&lt;\/h1&gt;<br \/>\n            &lt;p&gt;\u751f\u6210\u65f6\u95f4: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;timestamp&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&lt;\/p&gt;<\/p>\n<p>            &lt;div class&#061;&#034;section&#034;&gt;<br \/>\n                &lt;h2&gt;\u7cfb\u7edf\u4fe1\u606f&lt;\/h2&gt;<br \/>\n                &lt;table&gt;<br \/>\n                    &lt;tr&gt;&lt;th&gt;\u4e3b\u673a\u540d&lt;\/th&gt;&lt;td&gt;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;system&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;hostname&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;N\/A&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&lt;\/td&gt;&lt;\/tr&gt;<br \/>\n                    &lt;tr&gt;&lt;th&gt;\u64cd\u4f5c\u7cfb\u7edf&lt;\/th&gt;&lt;td&gt;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;system&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;os&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;N\/A&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&lt;\/td&gt;&lt;\/tr&gt;<br \/>\n                    &lt;tr&gt;&lt;th&gt;CPU&lt;\/th&gt;&lt;td&gt;{self.report[&#039;system&#039;].get(&#039;cpu&#039;, {}).get(&#039;model&#039;, &#039;N\/A&#039;)} ({self.report[&#039;system&#039;].get(&#039;cpu&#039;, {}).get(&#039;cores&#039;, &#039;N\/A&#039;)}\u6838)&lt;\/td&gt;&lt;\/tr&gt;<br \/>\n                    &lt;tr&gt;&lt;th&gt;\u5185\u5b58&lt;\/th&gt;&lt;td&gt;{self.report[&#039;system&#039;].get(&#039;memory&#039;, {}).get(&#039;total&#039;, &#039;N\/A&#039;)}MB&lt;\/td&gt;&lt;\/tr&gt;<br \/>\n                &lt;\/table&gt;<br \/>\n            &lt;\/div&gt;<\/p>\n<p>            &lt;!&#8211; \u5176\u4ed6\u90e8\u5206&#8230; &#8211;&gt;<\/p>\n<p>            <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>_generate_issues_section<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"><br \/>\n        &lt;\/body&gt;<br \/>\n        &lt;\/html&gt;<br \/>\n        &#034;&#034;&#034;<\/span><\/span><\/p>\n<p>        <span class=\"token keyword\">with<\/span> <span class=\"token builtin\">open<\/span><span class=\"token punctuation\">(<\/span>filename<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;w&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> f<span class=\"token punctuation\">:<\/span><br \/>\n            f<span class=\"token punctuation\">.<\/span>write<span class=\"token punctuation\">(<\/span>html<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">_generate_issues_section<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;issues&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#039;&lt;div class&#061;&#034;section&#034;&gt;&lt;h2&gt;\u95ee\u9898\u5217\u8868&lt;\/h2&gt;&lt;p&gt;\u672a\u53d1\u73b0\u4e25\u91cd\u95ee\u9898&lt;\/p&gt;&lt;\/div&gt;&#039;<\/span><\/p>\n<p>        issues_html <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;&lt;div class&#061;&#034;section&#034;&gt;&lt;h2&gt;\u95ee\u9898\u5217\u8868&lt;\/h2&gt;&lt;ul&gt;&#039;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> issue <span class=\"token keyword\">in<\/span> self<span class=\"token punctuation\">.<\/span>report<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;issues&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            issues_html <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#039;&lt;li class&#061;&#034;issue&#034;&gt;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>issue<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&lt;\/li&gt;&#039;<\/span><\/span><br \/>\n        issues_html <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token string\">&#039;&lt;\/ul&gt;&lt;\/div&gt;&#039;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> issues_html<\/p>\n<p><span class=\"token keyword\">if<\/span> __name__ <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;__main__&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    audit <span class=\"token operator\">&#061;<\/span> ServerAudit<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    audit<span class=\"token punctuation\">.<\/span>run_checks<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    audit<span class=\"token punctuation\">.<\/span>generate_report<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;server_audit_report.html&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5ba1\u8ba1\u62a5\u544a\u5df2\u751f\u6210: server_audit_report.html&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h4>5.3 \u4ee3\u7801\u89e3\u8bfb\u4e0e\u5206\u6790<\/h4>\n<p>\u8fd9\u4e2a\u670d\u52a1\u5668\u5ba1\u8ba1\u811a\u672c\u5b9e\u73b0\u4e86\u4ee5\u4e0b\u529f\u80fd&#xff1a;<\/p>\n<li>\n<p>\u7cfb\u7edf\u4fe1\u606f\u6536\u96c6&#xff1a;<\/p>\n<ul>\n<li>\u901a\u8fc7Python\u7684platform\u6a21\u5757\u548c\u89e3\u6790\/proc\u6587\u4ef6\u7cfb\u7edf\u83b7\u53d6\u4e3b\u673a\u540d\u3001\u64cd\u4f5c\u7cfb\u7edf\u7248\u672c\u3001CPU\u548c\u5185\u5b58\u4fe1\u606f<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u5b89\u5168\u68c0\u67e5&#xff1a;<\/p>\n<ul>\n<li>\u68c0\u67e5\u7528\u6237\u8d26\u6237&#xff08;root\u8fdc\u7a0b\u767b\u5f55\u3001\u7a7a\u5bc6\u7801\u8d26\u6237\u7b49&#xff09;<\/li>\n<li>\u68c0\u67e5SSH\u914d\u7f6e&#xff08;\u534f\u8bae\u7248\u672c\u3001\u5bc6\u7801\u8ba4\u8bc1\u7b49&#xff09;<\/li>\n<li>\u68c0\u67e5\u9632\u706b\u5899\u72b6\u6001\u548c\u89c4\u5219<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u6027\u80fd\u68c0\u67e5&#xff1a;<\/p>\n<ul>\n<li>\u78c1\u76d8\u4f7f\u7528\u7387\u76d1\u63a7<\/li>\n<li>\u5173\u952e\u670d\u52a1\u72b6\u6001\u68c0\u67e5<\/li>\n<li>\u5185\u6838\u53c2\u6570\u68c0\u67e5<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u62a5\u544a\u751f\u6210&#xff1a;<\/p>\n<ul>\n<li>\u81ea\u52a8\u751f\u6210\u683c\u5f0f\u5316\u7684HTML\u62a5\u544a<\/li>\n<li>\u7a81\u51fa\u95ee\u9898\u663e\u793a\u548c\u5206\u7c7b<\/li>\n<\/ul>\n<\/li>\n<p>\u8be5\u811a\u672c\u53ef\u4ee5\u4f5c\u4e3a\u65e5\u5e38\u8fd0\u7ef4\u7684\u81ea\u52a8\u5316\u68c0\u67e5\u5de5\u5177&#xff0c;\u5b9a\u671f\u8fd0\u884c\u4ee5\u53d1\u73b0\u6f5c\u5728\u95ee\u9898\u3002\u53ef\u4ee5\u8fdb\u4e00\u6b65\u6269\u5c55\u7684\u529f\u80fd\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>\u6dfb\u52a0\u66f4\u591a\u68c0\u67e5\u9879&#xff08;\u5982\u65e5\u5fd7\u8f6e\u8f6c\u914d\u7f6e\u3001\u5907\u4efd\u72b6\u6001\u7b49&#xff09;<\/li>\n<li>\u5b9e\u73b0\u90ae\u4ef6\u81ea\u52a8\u53d1\u9001\u62a5\u544a<\/li>\n<li>\u4e0e\u76d1\u63a7\u7cfb\u7edf\u96c6\u6210&#xff0c;\u81ea\u52a8\u521b\u5efa\u544a\u8b66\u5de5\u5355<\/li>\n<li>\u6dfb\u52a0\u5386\u53f2\u6570\u636e\u5bf9\u6bd4\u529f\u80fd<\/li>\n<\/ul>\n<h3>6. \u5b9e\u9645\u5e94\u7528\u573a\u666f<\/h3>\n<h4>6.1 \u9ad8\u6d41\u91cfWeb\u670d\u52a1\u5668\u8fd0\u7ef4<\/h4>\n<p>\u9ad8\u6d41\u91cfWeb\u670d\u52a1\u5668\u7684\u8fd0\u7ef4\u6311\u6218\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>\u7a81\u53d1\u6d41\u91cf\u5904\u7406<\/li>\n<li>\u8d44\u6e90\u7ade\u4e89\u7ba1\u7406<\/li>\n<li>\u670d\u52a1\u9ad8\u53ef\u7528\u4fdd\u969c<\/li>\n<\/ul>\n<p>\u89e3\u51b3\u65b9\u6848&#xff1a;<\/p>\n<li>\u8d1f\u8f7d\u5747\u8861\u914d\u7f6e&#xff1a;<\/li>\n<p>upstream backend {<br \/>\n    least_conn;  # \u6700\u5c11\u8fde\u63a5\u7b97\u6cd5<br \/>\n    server web01:80 weight&#061;5;<br \/>\n    server web02:80 weight&#061;3;<br \/>\n    server web03:80 backup;  # \u5907\u7528\u670d\u52a1\u5668<br \/>\n    keepalive 32;  # \u4fdd\u6301\u8fde\u63a5\u6570<br \/>\n}<\/p>\n<p>server {<br \/>\n    listen 80;<br \/>\n    location \/ {<br \/>\n        proxy_pass http:\/\/backend;<br \/>\n        proxy_http_version 1.1;<br \/>\n        proxy_set_header Connection &#034;&#034;;<br \/>\n    }<br \/>\n}<\/p>\n<li>\u81ea\u52a8\u6269\u5c55\u7b56\u7565&#xff1a;<\/li>\n<p><span class=\"token shebang important\">#!\/bin\/bash<\/span><br \/>\n<span class=\"token comment\"># \u81ea\u52a8\u6269\u5c55\u811a\u672c\u793a\u4f8b<\/span><br \/>\n<span class=\"token assign-left variable\">LOAD_THRESHOLD<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token number\">5<\/span><br \/>\n<span class=\"token assign-left variable\">UP_SCALE_INTERVAL<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token number\">300<\/span>  <span class=\"token comment\"># 5\u5206\u949f<\/span><br \/>\n<span class=\"token assign-left variable\">LAST_UP_SCALE<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><\/p>\n<p><span class=\"token keyword\">while<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">do<\/span><br \/>\n    <span class=\"token assign-left variable\">LOAD<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token variable\"><span class=\"token variable\">$(<\/span><span class=\"token function\">cat<\/span> \/proc\/loadavg <span class=\"token operator\">|<\/span> <span class=\"token function\">awk<\/span> <span class=\"token string\">&#039;{print <span class=\"token variable\">$1<\/span>}&#039;<\/span><span class=\"token variable\">)<\/span><\/span><br \/>\n    <span class=\"token assign-left variable\">NOW<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token variable\"><span class=\"token variable\">$(<\/span><span class=\"token function\">date<\/span> &#043;%s<span class=\"token variable\">)<\/span><\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token variable\"><span class=\"token punctuation\">((<\/span> $<span class=\"token punctuation\">(<\/span>echo &#034;$LOAD <span class=\"token operator\">&gt;<\/span> $LOAD_THRESHOLD&#034; <span class=\"token operator\">|<\/span> bc <span class=\"token operator\">&#8211;<\/span>l<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">))<\/span><\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">then<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token variable\"><span class=\"token punctuation\">((<\/span> NOW <span class=\"token operator\">&#8211;<\/span> LAST_UP_SCALE <span class=\"token operator\">&gt;<\/span> UP_SCALE_INTERVAL <span class=\"token punctuation\">))<\/span><\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">then<\/span><br \/>\n            <span class=\"token builtin class-name\">echo<\/span> <span class=\"token string\">&#034;\u9ad8\u8d1f\u8f7d(<span class=\"token variable\">$LOAD<\/span>)&#xff0c;\u89e6\u53d1\u6269\u5c55&#034;<\/span><br \/>\n            <span class=\"token comment\"># \u8c03\u7528\u4e91API\u6dfb\u52a0\u670d\u52a1\u5668<\/span><br \/>\n            aws autoscaling set-desired-capacity <span class=\"token punctuation\">\\\\<\/span><br \/>\n                &#8211;auto-scaling-group-name web-asg <span class=\"token punctuation\">\\\\<\/span><br \/>\n                &#8211;desired-capacity <span class=\"token variable\"><span class=\"token variable\">$((<\/span> $<span class=\"token punctuation\">(<\/span>aws autoscaling describe<span class=\"token operator\">&#8211;<\/span>auto<span class=\"token operator\">&#8211;<\/span>scaling<span class=\"token operator\">&#8211;<\/span>groups \\\\<br \/>\n                    <span class=\"token operator\">&#8212;<\/span>auto<span class=\"token operator\">&#8211;<\/span>scaling<span class=\"token operator\">&#8211;<\/span>group<span class=\"token operator\">&#8211;<\/span>names web<span class=\"token operator\">&#8211;<\/span>asg \\\\<br \/>\n                    <span class=\"token operator\">&#8212;<\/span>query &#039;AutoScalingGroups[<span class=\"token number\">0<\/span>].DesiredCapacity&#039; <span class=\"token operator\">&#8212;<\/span>output text<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span> <span class=\"token variable\">))<\/span><\/span><br \/>\n            <span class=\"token assign-left variable\">LAST_UP_SCALE<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token variable\">$NOW<\/span><br \/>\n        <span class=\"token keyword\">fi<\/span><br \/>\n    <span class=\"token keyword\">fi<\/span><\/p>\n<p>    <span class=\"token function\">sleep<\/span> <span class=\"token number\">60<\/span><br \/>\n<span class=\"token keyword\">done<\/span><\/p>\n<h4>6.2 \u6570\u636e\u5e93\u670d\u52a1\u5668\u6027\u80fd\u4f18\u5316<\/h4>\n<p>\u6570\u636e\u5e93\u670d\u52a1\u5668\u5e38\u89c1\u6027\u80fd\u95ee\u9898&#xff1a;<\/p>\n<ul>\n<li>\u6162\u67e5\u8be2<\/li>\n<li>\u8fde\u63a5\u6570\u8017\u5c3d<\/li>\n<li>\u78c1\u76d8I\/O\u74f6\u9888<\/li>\n<\/ul>\n<p>\u4f18\u5316\u63aa\u65bd&#xff1a;<\/p>\n<li>MySQL\u914d\u7f6e\u4f18\u5316&#xff1a;<\/li>\n<p># my.cnf \u5173\u952e\u914d\u7f6e<br \/>\n[mysqld]<br \/>\ninnodb_buffer_pool_size &#061; 12G  # \u603b\u5185\u5b58\u768450-70%<br \/>\ninnodb_log_file_size &#061; 2G<br \/>\ninnodb_flush_log_at_trx_commit &#061; 2  # \u5e73\u8861\u6027\u80fd\u4e0e\u6301\u4e45\u6027<br \/>\ninnodb_flush_method &#061; O_DIRECT<br \/>\ninnodb_read_io_threads &#061; 16<br \/>\ninnodb_write_io_threads &#061; 16<br \/>\nmax_connections &#061; 500<br \/>\nquery_cache_size &#061; 0  # \u7981\u7528\u67e5\u8be2\u7f13\u5b58(MySQL 8.0&#043;\u9ed8\u8ba4)<\/p>\n<li>\u6162\u67e5\u8be2\u76d1\u63a7&#xff1a;<\/li>\n<p><span class=\"token comment\">&#8212; \u542f\u7528\u6162\u67e5\u8be2\u65e5\u5fd7<\/span><br \/>\n<span class=\"token keyword\">SET<\/span> <span class=\"token keyword\">GLOBAL<\/span> slow_query_log <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;ON&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">SET<\/span> <span class=\"token keyword\">GLOBAL<\/span> long_query_time <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\"># \u8d85\u8fc71\u79d2\u7684\u67e5\u8be2<\/span><br \/>\n<span class=\"token keyword\">SET<\/span> <span class=\"token keyword\">GLOBAL<\/span> log_queries_not_using_indexes <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;ON&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u5206\u6790\u6162\u67e5\u8be2\u65e5\u5fd7<\/span><br \/>\npt<span class=\"token operator\">&#8211;<\/span>query<span class=\"token operator\">&#8211;<\/span>digest <span class=\"token operator\">\/<\/span>var<span class=\"token operator\">\/<\/span>log<span class=\"token operator\">\/<\/span>mysql<span class=\"token operator\">\/<\/span>mysql<span class=\"token operator\">&#8211;<\/span>slow<span class=\"token punctuation\">.<\/span>log<\/p>\n<h3>7. \u5de5\u5177\u548c\u8d44\u6e90\u63a8\u8350<\/h3>\n<h4>7.1 \u5b66\u4e60\u8d44\u6e90\u63a8\u8350<\/h4>\n<h5>7.1.1 \u4e66\u7c4d\u63a8\u8350<\/h5>\n<ul>\n<li>\u300aLinux\u7cfb\u7edf\u7ba1\u7406\u6280\u672f\u624b\u518c\u300b- \u5168\u9762\u8986\u76d6Linux\u7cfb\u7edf\u7ba1\u7406\u77e5\u8bc6<\/li>\n<li>\u300aSite Reliability Engineering\u300b- Google SRE\u5b9e\u8df5\u6307\u5357<\/li>\n<li>\u300aUNIX\u548cLinux\u7cfb\u7edf\u7ba1\u7406\u5b9e\u6218\u300b- \u5b9e\u7528\u8fd0\u7ef4\u6280\u5de7\u5927\u5168<\/li>\n<li>\u300a\u6027\u80fd\u4e4b\u5dc5\u300b- \u6df1\u5165\u8bb2\u89e3\u7cfb\u7edf\u6027\u80fd\u5206\u6790\u4e0e\u4f18\u5316<\/li>\n<\/ul>\n<h5>7.1.2 \u5728\u7ebf\u8bfe\u7a0b<\/h5>\n<ul>\n<li>Linux Foundation\u7684&#034;Linux\u7cfb\u7edf\u7ba1\u7406&#034;\u7cfb\u5217\u8bfe\u7a0b<\/li>\n<li>Coursera\u7684&#034;Google IT Automation with Python&#034;<\/li>\n<li>Udemy\u7684&#034;Linux Mastery: Master the Linux Command Line&#034;<\/li>\n<li>Pluralsight\u7684&#034;Linux\u7cfb\u7edf\u8fd0\u7ef4&#034;\u8def\u5f84<\/li>\n<\/ul>\n<h5>7.1.3 \u6280\u672f\u535a\u5ba2\u548c\u7f51\u7ad9<\/h5>\n<ul>\n<li>Linux Journal (https:\/\/www.linuxjournal.com\/)<\/li>\n<li>Server Fault (https:\/\/serverfault.com\/)<\/li>\n<li>DigitalOcean\u793e\u533a\u6559\u7a0b<\/li>\n<li>Red Hat\u5b98\u65b9\u535a\u5ba2<\/li>\n<\/ul>\n<h4>7.2 \u5f00\u53d1\u5de5\u5177\u6846\u67b6\u63a8\u8350<\/h4>\n<h5>7.2.1 IDE\u548c\u7f16\u8f91\u5668<\/h5>\n<ul>\n<li>VS Code &#043; Remote SSH\u6269\u5c55<\/li>\n<li>JetBrains\u7cfb\u5217IDE (PyCharm, GoLand\u7b49)<\/li>\n<li>Vim\/Nvim &#043; \u63d2\u4ef6\u7cfb\u7edf<\/li>\n<li>Emacs &#043; TRAMP\u6a21\u5f0f<\/li>\n<\/ul>\n<h5>7.2.2 \u8c03\u8bd5\u548c\u6027\u80fd\u5206\u6790\u5de5\u5177<\/h5>\n<ul>\n<li>strace&#xff1a;\u7cfb\u7edf\u8c03\u7528\u8ddf\u8e2a<\/li>\n<li>perf&#xff1a;Linux\u6027\u80fd\u5206\u6790\u5de5\u5177<\/li>\n<li>tcpdump&#xff1a;\u7f51\u7edc\u5305\u5206\u6790<\/li>\n<li>bpftrace&#xff1a;\u9ad8\u7ea7\u5185\u6838\u8ffd\u8e2a<\/li>\n<\/ul>\n<h5>7.2.3 \u76f8\u5173\u6846\u67b6\u548c\u5e93<\/h5>\n<ul>\n<li>Ansible&#xff1a;\u81ea\u52a8\u5316\u914d\u7f6e\u7ba1\u7406<\/li>\n<li>Terraform&#xff1a;\u57fa\u7840\u8bbe\u65bd\u5373\u4ee3\u7801<\/li>\n<li>Prometheus &#043; Grafana&#xff1a;\u76d1\u63a7\u89e3\u51b3\u65b9\u6848<\/li>\n<li>ELK Stack&#xff1a;\u65e5\u5fd7\u7ba1\u7406\u5e73\u53f0<\/li>\n<\/ul>\n<h4>7.3 \u76f8\u5173\u8bba\u6587\u8457\u4f5c\u63a8\u8350<\/h4>\n<h5>7.3.1 \u7ecf\u5178\u8bba\u6587<\/h5>\n<ul>\n<li>\u201cThe UNIX Time-Sharing System\u201d &#8211; Dennis Ritchie &amp; Ken Thompson<\/li>\n<li>\u201cEnd-to-End Arguments in System Design\u201d &#8211; Saltzer, Reed &amp; Clark<\/li>\n<li>\u201cGoogle Cluster Architecture\u201d &#8211; Google\u7814\u7a76\u8bba\u6587<\/li>\n<\/ul>\n<h5>7.3.2 \u6700\u65b0\u7814\u7a76\u6210\u679c<\/h5>\n<ul>\n<li>\u4e91\u539f\u751f\u8fd0\u7ef4\u6a21\u5f0f\u7814\u7a76<\/li>\n<li>AIOps\u76f8\u5173\u8bba\u6587<\/li>\n<li>\u65e0\u670d\u52a1\u5668\u67b6\u6784\u8fd0\u7ef4\u6311\u6218<\/li>\n<\/ul>\n<h5>7.3.3 \u5e94\u7528\u6848\u4f8b\u5206\u6790<\/h5>\n<ul>\n<li>Netflix\u8fd0\u7ef4\u5b9e\u8df5<\/li>\n<li>AWS\u67b6\u6784\u6700\u4f73\u5b9e\u8df5<\/li>\n<li>\u5927\u578b\u4e92\u8054\u7f51\u516c\u53f8SRE\u6848\u4f8b<\/li>\n<\/ul>\n<h3>8. \u603b\u7ed3&#xff1a;\u672a\u6765\u53d1\u5c55\u8d8b\u52bf\u4e0e\u6311\u6218<\/h3>\n<p>\u670d\u52a1\u5668\u8fd0\u7ef4\u9886\u57df\u6b63\u5728\u7ecf\u5386\u5feb\u901f\u53d8\u9769&#xff0c;\u4e3b\u8981\u8d8b\u52bf\u5305\u62ec&#xff1a;<\/p>\n<li>\n<p>\u4e91\u539f\u751f\u8fd0\u7ef4&#xff1a;<\/p>\n<ul>\n<li>\u5bb9\u5668\u5316\u548cKubernetes\u6210\u4e3a\u6807\u51c6<\/li>\n<li>\u670d\u52a1\u7f51\u683c(Service Mesh)\u6280\u672f\u666e\u53ca<\/li>\n<li>\u6df7\u5408\u4e91\u548c\u591a\u4e91\u7ba1\u7406\u6311\u6218<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u81ea\u52a8\u5316\u4e0eAIOps&#xff1a;<\/p>\n<ul>\n<li>\u57fa\u4e8e\u673a\u5668\u5b66\u4e60\u7684\u5f02\u5e38\u68c0\u6d4b<\/li>\n<li>\u81ea\u52a8\u5316\u6839\u56e0\u5206\u6790<\/li>\n<li>\u9884\u6d4b\u6027\u7ef4\u62a4<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u5b89\u5168\u8fd0\u7ef4\u4e00\u4f53\u5316&#xff1a;<\/p>\n<ul>\n<li>DevSecOps\u5b9e\u8df5<\/li>\n<li>\u96f6\u4fe1\u4efb\u67b6\u6784\u5b9e\u65bd<\/li>\n<li>\u6301\u7eed\u5b89\u5168\u76d1\u63a7<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8fb9\u7f18\u8ba1\u7b97\u8fd0\u7ef4&#xff1a;<\/p>\n<ul>\n<li>\u5206\u5e03\u5f0f\u8282\u70b9\u7ba1\u7406<\/li>\n<li>\u4f4e\u5ef6\u8fdf\u9700\u6c42\u5904\u7406<\/li>\n<li>\u53d7\u9650\u73af\u5883\u4f18\u5316<\/li>\n<\/ul>\n<\/li>\n<p>\u9762\u4e34\u7684\u6311\u6218&#xff1a;<\/p>\n<ul>\n<li>\u6280\u672f\u6808\u5feb\u901f\u66f4\u65b0\u5e26\u6765\u7684\u5b66\u4e60\u538b\u529b<\/li>\n<li>\u7cfb\u7edf\u590d\u6742\u5ea6\u589e\u52a0\u5bfc\u81f4\u7684\u6545\u969c\u6392\u67e5\u56f0\u96be<\/li>\n<li>\u5b89\u5168\u5a01\u80c1\u65e5\u76ca\u590d\u6742\u5316<\/li>\n<li>7\u00d724\u5c0f\u65f6\u670d\u52a1\u53ef\u7528\u6027\u8981\u6c42<\/li>\n<\/ul>\n<p>\u672a\u6765\u4f18\u79c0\u7684\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u9700\u8981\u5177\u5907&#xff1a;<\/p>\n<ul>\n<li>\u624e\u5b9e\u7684\u8ba1\u7b97\u673a\u7cfb\u7edf\u57fa\u7840\u77e5\u8bc6<\/li>\n<li>\u7f16\u7a0b\u548c\u81ea\u52a8\u5316\u80fd\u529b<\/li>\n<li>\u8de8\u9886\u57df\u534f\u4f5c\u80fd\u529b<\/li>\n<li>\u6301\u7eed\u5b66\u4e60\u548c\u9002\u5e94\u80fd\u529b<\/li>\n<\/ul>\n<h3>9. \u9644\u5f55&#xff1a;\u5e38\u89c1\u95ee\u9898\u4e0e\u89e3\u7b54<\/h3>\n<p>Q1&#xff1a;\u5982\u4f55\u5feb\u901f\u5b9a\u4f4d\u670d\u52a1\u5668\u6027\u80fd\u74f6\u9888&#xff1f;<\/p>\n<p>A&#xff1a;\u63a8\u8350\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5&#xff1a;<\/p>\n<li>\u4f7f\u7528top\u547d\u4ee4\u67e5\u770b\u6574\u4f53\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5<\/li>\n<li>\u4f7f\u7528vmstat 1\u67e5\u770bCPU\u3001\u5185\u5b58\u3001I\/O\u7b49\u5f85\u60c5\u51b5<\/li>\n<li>\u4f7f\u7528iostat -x 1\u67e5\u770b\u78c1\u76d8I\/O\u8be6\u7ec6\u6570\u636e<\/li>\n<li>\u4f7f\u7528dstat\u7efc\u5408\u67e5\u770b\u7cfb\u7edf\u8d44\u6e90\u4f7f\u7528<\/li>\n<li>\u4f7f\u7528perf top\u67e5\u770b\u70ed\u70b9\u51fd\u6570<\/li>\n<p>Q2&#xff1a;\u670d\u52a1\u5668\u88ab\u5165\u4fb5\u540e\u5e94\u8be5\u91c7\u53d6\u54ea\u4e9b\u7d27\u6025\u63aa\u65bd&#xff1f;<\/p>\n<p>A&#xff1a;\u5e94\u6025\u54cd\u5e94\u6b65\u9aa4&#xff1a;<\/p>\n<li>\u7acb\u5373\u65ad\u5f00\u7f51\u7edc\u8fde\u63a5<\/li>\n<li>\u4fdd\u5b58\u5f53\u524d\u8fde\u63a5\u4fe1\u606f(netstat -tulnp, ss -s)<\/li>\n<li>\u521b\u5efa\u7cfb\u7edf\u5feb\u7167(\u5185\u5b58\u548c\u78c1\u76d8)<\/li>\n<li>\u68c0\u67e5\u5f02\u5e38\u8fdb\u7a0b(ps auxf, lsof)<\/li>\n<li>\u68c0\u67e5\u5f02\u5e38\u7528\u6237\u548c\u6743\u9650(\/etc\/passwd, \/etc\/shadow)<\/li>\n<li>\u68c0\u67e5\u5b9a\u65f6\u4efb\u52a1(crontab -l, \/etc\/cron*)<\/li>\n<li>\u4fdd\u7559\u8bc1\u636e\u540e\u91cd\u88c5\u7cfb\u7edf<\/li>\n<p>Q3&#xff1a;\u5982\u4f55\u8bbe\u8ba1\u6709\u6548\u7684\u76d1\u63a7\u544a\u8b66\u7b56\u7565&#xff1f;<\/p>\n<p>A&#xff1a;\u597d\u7684\u544a\u8b66\u7b56\u7565\u5e94\u8be5&#xff1a;<\/p>\n<li>\u5206\u5c42\u7ea7\u8bbe\u7f6e(\u8b66\u544a\u3001\u4e25\u91cd\u3001\u707e\u96be)<\/li>\n<li>\u907f\u514d\u544a\u8b66\u98ce\u66b4(\u8bbe\u7f6e\u5408\u7406\u7684\u9759\u9ed8\u671f)<\/li>\n<li>\u5305\u542b\u4e0a\u4e0b\u6587\u4fe1\u606f(\u6307\u6807\u53d8\u5316\u8d8b\u52bf\u3001\u76f8\u5173\u4e8b\u4ef6)<\/li>\n<li>\u8bbe\u7f6e\u660e\u786e\u7684\u8d1f\u8d23\u4eba\u548c\u5347\u7ea7\u8def\u5f84<\/li>\n<li>\u5b9a\u671f\u56de\u987e\u548c\u4f18\u5316\u544a\u8b66\u89c4\u5219<\/li>\n<p>Q4&#xff1a;\u81ea\u52a8\u5316\u8fd0\u7ef4\u5b9e\u65bd\u7684\u5173\u952e\u6210\u529f\u56e0\u7d20\u662f\u4ec0\u4e48&#xff1f;<\/p>\n<p>A&#xff1a;\u5173\u952e\u56e0\u7d20\u5305\u62ec&#xff1a;<\/p>\n<li>\u5b8c\u5584\u7684\u914d\u7f6e\u7ba1\u7406\u6570\u636e\u5e93(CMDB)<\/li>\n<li>\u6807\u51c6\u5316\u7684\u64cd\u4f5c\u6d41\u7a0b<\/li>\n<li>\u7248\u672c\u63a7\u5236\u548c\u56de\u6eda\u673a\u5236<\/li>\n<li>\u5145\u5206\u7684\u6d4b\u8bd5\u73af\u5883<\/li>\n<li>\u6e10\u8fdb\u5f0f\u63a8\u5e7f\u7b56\u7565<\/li>\n<li>\u4eba\u5458\u57f9\u8bad\u548c\u6587\u6863\u5efa\u8bbe<\/li>\n<h3>10. \u6269\u5c55\u9605\u8bfb &amp; \u53c2\u8003\u8d44\u6599<\/h3>\n<li>Linux Documentation Project (https:\/\/www.tldp.org\/)<\/li>\n<li>IBM DeveloperWorks Linux\u4e13\u533a<\/li>\n<li>Google SRE\u5de5\u4f5c\u624b\u518c<\/li>\n<li>AWS\u8fd0\u7ef4\u6700\u4f73\u5b9e\u8df5\u767d\u76ae\u4e66<\/li>\n<li>\u300a\u51e4\u51f0\u9879\u76ee\u300b- 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