{"id":40475,"date":"2025-05-29T08:21:18","date_gmt":"2025-05-29T00:21:18","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/40475.html"},"modified":"2025-05-29T08:21:18","modified_gmt":"2025-05-29T00:21:18","slug":"%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%8a%b6%e6%80%81%e7%9b%91%e6%8e%a7%e4%b8%8e%e7%8a%b6%e6%80%81%e6%a8%a1%e5%bc%8f%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/40475.html","title":{"rendered":"\u670d\u52a1\u5668\u72b6\u6001\u76d1\u63a7\u4e0e\u72b6\u6001\u6a21\u5f0f\u5b9e\u73b0"},"content":{"rendered":"<p>  \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90&#xff0c;\u70b9\u51fb\u83b7\u53d6  <img decoding=\"async\" alt=\"menu-r.4af5f7ec.gif\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250529002116-6837a87cc96d1.gif\" style=\"width:16px;margin-left:4px;vertical-align:text-bottom;cursor:text\" \/> <\/p>\n<p> \u7b80\u4ecb&#xff1a;\u670d\u52a1\u5668\u72b6\u6001\u76d1\u63a7\u5728\u7ef4\u62a4\u7cfb\u7edf\u7a33\u5b9a\u6027\u4e2d\u81f3\u5173\u91cd\u8981&#xff0c;\u72b6\u6001\u6a21\u5f0f\u4f5c\u4e3a\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f&#xff0c;\u9002\u7528\u4e8e\u5bf9\u8c61\u5728\u72b6\u6001\u53d8\u5316\u65f6\u6539\u53d8\u884c\u4e3a\u7684\u573a\u666f\u3002\u672c\u7bc7\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u5982\u4f55\u5c06\u72b6\u6001\u6a21\u5f0f\u5e94\u7528\u4e8e\u670d\u52a1\u5668\u76d1\u63a7&#xff0c;\u5305\u62ec\u5b9a\u4e49\u72b6\u6001\u63a5\u53e3\u3001\u5b9e\u73b0\u5177\u4f53\u72b6\u6001\u7c7b\u3001\u4ee5\u53ca\u901a\u8fc7\u4e0a\u4e0b\u6587\u7c7b\u5904\u7406\u72b6\u6001\u5207\u6362&#xff0c;\u4ece\u800c\u5b9e\u73b0\u7075\u6d3b\u4e14\u6613\u4e8e\u7ef4\u62a4\u7684\u76d1\u63a7\u7cfb\u7edf\u3002\u7ed3\u5408SNMP\u3001Prometheus\u548cGrafana\u7b49\u5de5\u5177&#xff0c;\u8fdb\u4e00\u6b65\u589e\u5f3a\u7cfb\u7edf\u7684\u76d1\u63a7\u80fd\u529b\u3002 <img decoding=\"async\" alt=\"\u670d\u52a1\u5668\u72b6\u6001\u76d1\u63a7-\u72b6\u6001\u6a21\u5f0f\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250529002116-6837a87cd4510.png\" \/> <\/p>\n<h2> 1. \u670d\u52a1\u5668\u72b6\u6001\u76d1\u63a7\u7684\u91cd\u8981\u6027 <\/h2>\n<h3> 1.1 \u4e3a\u4ec0\u4e48\u9700\u8981\u76d1\u63a7\u670d\u52a1\u5668\u72b6\u6001 <\/h3>\n<p> \u5728\u73b0\u4ee3IT\u8fd0\u7ef4\u7ba1\u7406\u4e2d&#xff0c;\u76d1\u63a7\u670d\u52a1\u5668\u72b6\u6001\u662f\u786e\u4fdd\u4e1a\u52a1\u8fde\u7eed\u6027\u548c\u7cfb\u7edf\u7a33\u5b9a\u6027\u7684\u5173\u952e\u73af\u8282\u3002\u5b9e\u65f6\u76d1\u63a7\u53ef\u4ee5\u5e2e\u52a9\u8fd0\u7ef4\u4eba\u5458\u5feb\u901f\u53d1\u73b0\u548c\u54cd\u5e94\u6f5c\u5728\u7684\u7cfb\u7edf\u95ee\u9898&#xff0c;\u4ece\u800c\u51cf\u5c11\u6545\u969c\u53d1\u751f\u7684\u98ce\u9669&#xff0c;\u4fdd\u8bc1\u670d\u52a1\u8d28\u91cf\u548c\u7528\u6237\u4f53\u9a8c\u3002 <\/p>\n<h3> 1.2 \u670d\u52a1\u5668\u76d1\u63a7\u7684\u6311\u6218\u4e0e\u9700\u6c42 <\/h3>\n<p> \u968f\u7740\u4e1a\u52a1\u89c4\u6a21\u7684\u6269\u5927\u548c\u6280\u672f\u7684\u590d\u6742\u5316&#xff0c;\u670d\u52a1\u5668\u76d1\u63a7\u9762\u4e34\u66f4\u591a\u7684\u6311\u6218\u3002\u4f8b\u5982&#xff0c;\u9700\u8981\u76d1\u63a7\u7684\u670d\u52a1\u5668\u6570\u91cf\u5267\u589e&#xff0c;\u6d89\u53ca\u7684\u76d1\u63a7\u6307\u6807\u79cd\u7c7b\u7e41\u591a&#xff0c;\u6570\u636e\u6536\u96c6\u548c\u5206\u6790\u7684\u5b9e\u65f6\u6027\u8981\u6c42\u66f4\u9ad8\u3002\u56e0\u6b64&#xff0c;\u76d1\u63a7\u7cfb\u7edf\u5fc5\u987b\u80fd\u591f\u6269\u5c55\u3001\u7075\u6d3b\u5e76\u4e14\u5177\u6709\u9ad8\u6548\u7684\u6570\u636e\u5904\u7406\u80fd\u529b\u3002 <\/p>\n<h3> 1.3 \u76d1\u63a7\u5bf9\u4e8e\u6027\u80fd\u4f18\u5316\u7684\u4f5c\u7528 <\/h3>\n<p> \u670d\u52a1\u5668\u76d1\u63a7\u4e0d\u4ec5\u7528\u4e8e\u6545\u969c\u9884\u9632&#xff0c;\u8fd8\u80fd\u591f\u4e3a\u7cfb\u7edf\u4f18\u5316\u63d0\u4f9b\u6570\u636e\u652f\u6301\u3002\u901a\u8fc7\u5206\u6790\u76d1\u63a7\u6570\u636e&#xff0c;\u8fd0\u7ef4\u56e2\u961f\u53ef\u4ee5\u8bc6\u522b\u6027\u80fd\u74f6\u9888&#xff0c;\u53ca\u65f6\u8c03\u6574\u8d44\u6e90\u914d\u7f6e&#xff0c;\u4f18\u5316\u7cfb\u7edf\u67b6\u6784&#xff0c;\u4ece\u800c\u63d0\u5347\u6574\u4f53\u6027\u80fd\u548c\u964d\u4f4e\u6210\u672c\u3002 <\/p>\n<p> \u670d\u52a1\u5668\u76d1\u63a7\u7684\u91cd\u8981\u6027\u4e0d\u8a00\u800c\u55bb&#xff0c;\u5b83\u662f\u4fdd\u8bc1IT\u7cfb\u7edf\u9ad8\u6548\u3001\u7a33\u5b9a\u8fd0\u884c\u7684\u57fa\u7840\u3002\u5728\u63a5\u4e0b\u6765\u7684\u7ae0\u8282\u4e2d&#xff0c;\u6211\u4eec\u5c06\u63a2\u8ba8\u5982\u4f55\u5229\u7528\u72b6\u6001\u6a21\u5f0f\u63d0\u5347\u670d\u52a1\u5668\u76d1\u63a7\u7684\u6548\u7387\u548c\u6548\u679c\u3002 <\/p>\n<h2> 2. \u72b6\u6001\u6a21\u5f0f\u7684\u5b9a\u4e49\u4e0e\u5e94\u7528 <\/h2>\n<h4> 2.1 \u72b6\u6001\u6a21\u5f0f\u7684\u7406\u8bba\u57fa\u7840 <\/h4>\n<h5> 2.1.1 \u8bbe\u8ba1\u6a21\u5f0f\u4e0e\u72b6\u6001\u6a21\u5f0f\u7b80\u4ecb <\/h5>\n<p> \u5728\u8f6f\u4ef6\u5de5\u7a0b\u4e2d&#xff0c;\u8bbe\u8ba1\u6a21\u5f0f\u662f\u4e00\u5957\u88ab\u53cd\u590d\u4f7f\u7528\u3001\u591a\u6570\u4eba\u77e5\u6653\u3001\u7ecf\u8fc7\u5206\u7c7b\u7f16\u76ee\u3001\u4ee3\u7801\u8bbe\u8ba1\u7ecf\u9a8c\u7684\u603b\u7ed3\u3002\u4f7f\u7528\u8bbe\u8ba1\u6a21\u5f0f\u662f\u4e3a\u4e86\u53ef\u91cd\u7528\u4ee3\u7801\u3001\u8ba9\u4ee3\u7801\u66f4\u5bb9\u6613\u88ab\u4ed6\u4eba\u7406\u89e3\u3001\u4fdd\u8bc1\u4ee3\u7801\u53ef\u9760\u6027\u3002\u5b83\u662f\u8f6f\u4ef6\u8bbe\u8ba1\u4e2d\u89e3\u51b3\u95ee\u9898\u7684\u6a21\u677f&#xff0c;\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u4e2d\u7684\u4e00\u79cd\u5f62\u5f0f\u3002 <\/p>\n<p> \u72b6\u6001\u6a21\u5f0f&#xff08;State Pattern&#xff09;\u662f\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u4e00&#xff0c;\u5b83\u5141\u8bb8\u4e00\u4e2a\u5bf9\u8c61\u5728\u5176\u5185\u90e8\u72b6\u6001\u6539\u53d8\u65f6\u6539\u53d8\u5b83\u7684\u884c\u4e3a\u3002\u8fd9\u4e2a\u5bf9\u8c61\u770b\u8d77\u6765\u4f3c\u4e4e\u4fee\u6539\u4e86\u5b83\u7684\u7c7b\u3002\u72b6\u6001\u6a21\u5f0f\u5c06\u6bcf\u4e2a\u72b6\u6001\u5c01\u88c5\u6210\u5355\u72ec\u7684\u7c7b&#xff0c;\u4e14\u5c06\u52a8\u4f5c\u59d4\u6258\u7ed9\u5f53\u524d\u7684\u72b6\u6001\u5bf9\u8c61\u6765\u6267\u884c\u3002 <\/p>\n<h5> 2.1.2 \u72b6\u6001\u6a21\u5f0f\u7684\u9002\u7528\u573a\u666f <\/h5>\n<p> \u72b6\u6001\u6a21\u5f0f\u901a\u5e38\u9002\u7528\u4e8e\u4ee5\u4e0b\u573a\u666f&#xff1a; <\/p>\n<ul>\n<li> \u5bf9\u8c61\u7684\u884c\u4e3a\u4f9d\u8d56\u4e8e\u5b83\u7684\u72b6\u6001&#xff0c;\u4e14\u5fc5\u987b\u5728\u8fd0\u884c\u65f6\u523b\u6839\u636e\u72b6\u6001\u6539\u53d8\u5b83\u7684\u884c\u4e3a\u3002 <\/li>\n<li> \u4ee3\u7801\u4e2d\u5b58\u5728\u5927\u91cf\u6761\u4ef6\u5224\u65ad\u8bed\u53e5&#xff0c;\u4e0e\u5404\u79cd\u72b6\u6001\u76f8\u5173\u7684\u884c\u4e3a\u88ab\u5206\u6563\u5728\u4e00\u4e2a\u4ee5\u4e0a\u7684\u7c7b\u4e2d\u3002 <\/li>\n<\/ul>\n<p> \u4f7f\u7528\u72b6\u6001\u6a21\u5f0f\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u6761\u4ef6\u5206\u652f\u7684\u903b\u8f91\u5206\u6563\u5230\u62e5\u6709\u5404\u81ea\u72b6\u6001\u7684\u7c7b\u4e2d&#xff0c;\u8fd9\u53ef\u4ee5\u4f7f\u5f97\u7a0b\u5e8f\u7ed3\u6784\u66f4\u6e05\u6670&#xff0c;\u4e5f\u5bb9\u6613\u589e\u52a0\u65b0\u7684\u72b6\u6001\u3002 <\/p>\n<h4> 2.2 \u72b6\u6001\u6a21\u5f0f\u5728\u76d1\u63a7\u4e2d\u7684\u89d2\u8272 <\/h4>\n<h5> 2.2.1 \u72b6\u6001\u6a21\u5f0f\u4e0e\u76d1\u63a7\u7cfb\u7edf\u7684\u5173\u7cfb <\/h5>\n<p> \u5728\u76d1\u63a7\u7cfb\u7edf\u7684\u8bbe\u8ba1\u4e2d&#xff0c;\u72b6\u6001\u6a21\u5f0f\u53ef\u4ee5\u63d0\u4f9b\u4e00\u79cd\u4f18\u96c5\u7684\u65b9\u5f0f\u6765\u5904\u7406\u548c\u8868\u793a\u5bf9\u8c61\u72b6\u6001\u7684\u53d8\u5316\u3002\u76d1\u63a7\u7cfb\u7edf\u9700\u8981\u8ddf\u8e2a\u7cfb\u7edf\u3001\u670d\u52a1\u6216\u8bbe\u5907\u7684\u5b9e\u65f6\u72b6\u6001&#xff0c;\u8fd9\u4e9b\u72b6\u6001\u53ef\u80fd\u4f1a\u9891\u7e41\u53d8\u5316\u3002\u4f7f\u7528\u72b6\u6001\u6a21\u5f0f\u53ef\u4ee5\u4f7f\u5f97\u72b6\u6001\u8f6c\u6362\u7684\u5904\u7406\u903b\u8f91\u96c6\u4e2d&#xff0c;\u6613\u4e8e\u7ba1\u7406\u548c\u7ef4\u62a4\u3002 <\/p>\n<h5> 2.2.2 \u5b9e\u73b0\u76d1\u63a7\u903b\u8f91\u7684\u89e3\u8026\u4e0e\u4f18\u5316 <\/h5>\n<p> \u5728\u590d\u6742\u7684\u76d1\u63a7\u7cfb\u7edf\u4e2d&#xff0c;\u53ef\u80fd\u6709\u591a\u79cd\u72b6\u6001&#xff0c;\u5982&#xff1a;\u6b63\u5e38\u3001\u8b66\u544a\u3001\u9519\u8bef\u3001\u7ef4\u62a4\u7b49\u3002\u6bcf\u79cd\u72b6\u6001\u5bf9\u5e94\u7684\u5904\u7406\u903b\u8f91\u662f\u4e0d\u540c\u7684\u3002\u901a\u8fc7\u5e94\u7528\u72b6\u6001\u6a21\u5f0f&#xff0c;\u6211\u4eec\u53ef\u4ee5\u5c06\u4e0d\u540c\u7684\u72b6\u6001\u5904\u7406\u903b\u8f91\u5206\u79bb&#xff0c;\u5b9e\u73b0\u76d1\u63a7\u903b\u8f91\u7684\u89e3\u8026\u3002 <\/p>\n<p> \u4ee5\u670d\u52a1\u5668\u76d1\u63a7\u4e3a\u4f8b&#xff0c;\u670d\u52a1\u5668\u7684\u5065\u5eb7\u72b6\u6001\u53ef\u80fd\u6709\u5728\u7ebf\u3001\u79bb\u7ebf\u3001\u8d1f\u8f7d\u8fc7\u9ad8\u3001\u7cfb\u7edf\u6545\u969c\u7b49\u591a\u79cd\u72b6\u6001\u3002\u6bcf\u4e00\u79cd\u72b6\u6001\u5bf9\u5e94\u7684\u76d1\u63a7\u903b\u8f91\u662f\u4e0d\u540c\u7684\u3002\u5e94\u7528\u72b6\u6001\u6a21\u5f0f\u540e&#xff0c;\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u5bf9\u5e94\u7684\u201c\u5728\u7ebf\u72b6\u6001\u7c7b\u201d\u3001\u201c\u79bb\u7ebf\u72b6\u6001\u7c7b\u201d\u3001\u201c\u9ad8\u8d1f\u8f7d\u72b6\u6001\u7c7b\u201d\u548c\u201c\u6545\u969c\u72b6\u6001\u7c7b\u201d&#xff0c;\u5b83\u4eec\u7ee7\u627f\u81ea\u4e00\u4e2a\u516c\u5171\u7684\u201c\u72b6\u6001\u57fa\u7c7b\u201d&#xff0c;\u5e76\u4e3a\u6bcf\u79cd\u72b6\u6001\u63d0\u4f9b\u5177\u4f53\u7684\u5b9e\u73b0\u3002\u8fd9\u6837\u7684\u8bbe\u8ba1\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002 <\/p>\n<h2> 3. \u72b6\u6001\u6a21\u5f0f\u5b9e\u73b0\u7684\u5173\u952e\u6280\u672f <\/h2>\n<h3> 3.1 \u72b6\u6001\u63a5\u53e3\u7684\u5b9a\u4e49\u4e0e\u4f5c\u7528 <\/h3>\n<h4> 3.1.1 \u8bbe\u8ba1\u7edf\u4e00\u7684\u72b6\u6001\u63a5\u53e3 <\/h4>\n<p> \u5728\u8bbe\u8ba1\u6a21\u5f0f\u4e2d&#xff0c;\u72b6\u6001\u6a21\u5f0f\u5141\u8bb8\u4e00\u4e2a\u5bf9\u8c61\u5728\u5185\u90e8\u72b6\u6001\u6539\u53d8\u65f6\u6539\u53d8\u5b83\u7684\u884c\u4e3a&#xff0c;\u5bf9\u8c61\u770b\u8d77\u6765\u4f3c\u4e4e\u4fee\u6539\u4e86\u5b83\u7684\u7c7b\u3002\u72b6\u6001\u6a21\u5f0f\u7684\u5173\u952e\u662f\u5c06\u72b6\u6001\u7684\u903b\u8f91\u62bd\u8c61\u4e3a\u63a5\u53e3&#xff0c;\u7136\u540e\u901a\u8fc7\u5b9e\u73b0\u5177\u4f53\u7684\u5b50\u7c7b\u6765\u5b9a\u4e49\u4e0d\u540c\u72b6\u6001\u7684\u884c\u4e3a\u3002 <\/p>\n<p> \u8bbe\u8ba1\u7edf\u4e00\u7684\u72b6\u6001\u63a5\u53e3\u662f\u5b9e\u73b0\u72b6\u6001\u6a21\u5f0f\u7684\u524d\u63d0\u3002\u5b83\u4e3a\u6240\u6709\u5177\u4f53\u72b6\u6001\u7c7b\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5171\u540c\u7684\u884c\u4e3a\u89c4\u8303\u3002\u8fd9\u6837\u505a\u53ef\u4ee5\u5c06\u72b6\u6001\u8f6c\u6362\u903b\u8f91\u4ece\u5ba2\u6237\u7aef\u4ee3\u7801\u4e2d\u89e3\u8026\u51fa\u6765&#xff0c;\u8ba9\u5ba2\u6237\u7aef\u4ee3\u7801\u4e0d\u9700\u8981\u76f4\u63a5\u4e0e\u5177\u4f53\u72b6\u6001\u6253\u4ea4\u9053&#xff0c;\u53ea\u4e0e\u7edf\u4e00\u63a5\u53e3\u8fdb\u884c\u4ea4\u4e92\u3002 <\/p>\n<p> \u4f8b\u5982&#xff0c;\u5728\u4e00\u4e2a\u7b80\u5355\u7684\u72b6\u6001\u63a5\u53e3\u5b9a\u4e49\u4e2d&#xff0c;\u53ef\u4ee5\u6709\u5982\u4e0b\u4ee3\u7801&#xff1a; <\/p>\n<p>public interface State {<br \/>\n    void handle(Context context);<br \/>\n}<\/p>\n<p> \u8fd9\u91cc\u5b9a\u4e49\u4e86\u4e00\u4e2a  handle  \u65b9\u6cd5&#xff0c;\u6240\u6709\u5177\u4f53\u7684\u72b6\u6001\u7c7b\u90fd\u5fc5\u987b\u5b9e\u73b0\u8fd9\u4e2a\u65b9\u6cd5&#xff0c;\u4ee5\u63d0\u4f9b\u5728\u7279\u5b9a\u72b6\u6001\u4e0b\u7684\u884c\u4e3a\u3002 <\/p>\n<h4> 3.1.2 \u72b6\u6001\u63a5\u53e3\u7684\u65b9\u6cd5\u4e0e\u5b9e\u4f8b <\/h4>\n<p> \u4ee5\u670d\u52a1\u5668\u76d1\u63a7\u7cfb\u7edf\u4e3a\u4f8b&#xff0c;\u72b6\u6001\u63a5\u53e3\u53ef\u80fd\u5305\u542b\u5982\u4e0b\u65b9\u6cd5&#xff1a; <\/p>\n<p>public interface ServerState {<br \/>\n    void checkCPU(Context context);<br \/>\n    void checkMemory(Context context);<br \/>\n    void checkNetwork(Context context);<br \/>\n    void notifyStatus(Context context);<br \/>\n}<\/p>\n<p> \u6bcf\u4e2a\u5177\u4f53\u72b6\u6001\u7c7b\u90fd\u5c06\u5b9e\u73b0\u8fd9\u4e9b\u65b9\u6cd5&#xff0c;\u5e76\u6839\u636e\u670d\u52a1\u5668\u7684\u5b9e\u65f6\u72b6\u6001\u6267\u884c\u4e0d\u540c\u7684\u68c0\u67e5\u548c\u5904\u7406\u903b\u8f91\u3002\u8fd9\u6837\u7684\u8bbe\u8ba1\u80fd\u591f\u4fdd\u8bc1\u72b6\u6001\u903b\u8f91\u7684\u96c6\u4e2d\u7ba1\u7406&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u8f7b\u677e\u5730\u6dfb\u52a0\u6216\u4fee\u6539\u72b6\u6001\u3002 <\/p>\n<p> \u4e0b\u9762\u662f\u4e00\u4e2a\u5177\u4f53\u72b6\u6001\u7c7b\u7684\u7b80\u5355\u793a\u4f8b&#xff1a; <\/p>\n<p>public class UpState implements ServerState {<br \/>\n    public void checkCPU(Context context) {<br \/>\n        \/\/ \u68c0\u67e5CPU\u4f7f\u7528\u60c5\u51b5\u7684\u903b\u8f91<br \/>\n    }<br \/>\n    public void checkMemory(Context context) {<br \/>\n        \/\/ \u68c0\u67e5\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u7684\u903b\u8f91<br \/>\n    }<br \/>\n    public void checkNetwork(Context context) {<br \/>\n        \/\/ \u68c0\u67e5\u7f51\u7edc\u72b6\u6001\u7684\u903b\u8f91<br \/>\n    }<br \/>\n    public void notifyStatus(Context context) {<br \/>\n        \/\/ \u66f4\u65b0\u670d\u52a1\u5668\u72b6\u6001\u7684\u903b\u8f91<br \/>\n    }<br \/>\n}<\/p>\n<p> \u901a\u8fc7\u5b9e\u73b0\u8fd9\u4e9b\u65b9\u6cd5&#xff0c;  UpState  \u7c7b\u5b9a\u4e49\u4e86\u5f53\u670d\u52a1\u5668\u5904\u4e8e\u8fd0\u884c\u72b6\u6001\u65f6\u5e94\u5982\u4f55\u6267\u884c\u68c0\u67e5\u548c\u72b6\u6001\u66f4\u65b0\u3002 <\/p>\n<h3> 3.2 \u5177\u4f53\u72b6\u6001\u7c7b\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0 <\/h3>\n<h4> 3.2.1 \u4e0d\u540c\u72b6\u6001\u4e0b\u7c7b\u7684\u884c\u4e3a\u5b9e\u73b0 <\/h4>\n<p> \u5177\u4f53\u72b6\u6001\u7c7b\u4ee3\u8868\u4e86\u5bf9\u8c61\u5728\u67d0\u4e2a\u5177\u4f53\u72b6\u6001\u4e0b\u7684\u884c\u4e3a\u3002\u5728\u4e0d\u540c\u72b6\u6001\u4e0b&#xff0c;\u7c7b\u7684\u884c\u4e3a\u53ef\u80fd\u622a\u7136\u4e0d\u540c\u3002\u4f8b\u5982&#xff0c;\u5728\u670d\u52a1\u5668\u76d1\u63a7\u7cfb\u7edf\u4e2d&#xff0c;\u53ef\u80fd\u4f1a\u6709  DownState  \u3001  MaintenanceState  \u548c  UpState  \u7b49\u5177\u4f53\u72b6\u6001\u3002 <\/p>\n<p> \u6bcf\u4e2a\u72b6\u6001\u7c7b\u90fd\u5e94\u8be5\u5305\u542b\u4e0e\u5176\u4ed6\u72b6\u6001\u7c7b\u76f8\u540c\u7684\u65b9\u6cd5&#xff0c;\u4f46\u662f\u5b83\u4eec\u5185\u90e8\u7684\u5b9e\u73b0\u903b\u8f91\u5c06\u6709\u6240\u533a\u522b\u3002\u8fd9\u6837&#xff0c;\u65e0\u8bba\u5f53\u524d\u5bf9\u8c61\u5904\u4e8e\u4f55\u79cd\u72b6\u6001&#xff0c;\u5ba2\u6237\u7aef\u4ee3\u7801\u603b\u662f\u901a\u8fc7\u76f8\u540c\u7684\u65b9\u5f0f\u8c03\u7528\u76f8\u540c\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u884c\u4e3a\u3002 <\/p>\n<h4> 3.2.2 \u72b6\u6001\u8f6c\u6362\u7684\u903b\u8f91\u5904\u7406 <\/h4>\n<p> \u72b6\u6001\u8f6c\u6362\u901a\u5e38\u7531\u72b6\u6001\u7c7b\u5185\u90e8\u7684\u903b\u8f91\u6216\u5916\u90e8\u6761\u4ef6\u89e6\u53d1\u3002\u5728\u670d\u52a1\u5668\u76d1\u63a7\u7cfb\u7edf\u4e2d&#xff0c;\u6839\u636e\u76d1\u63a7\u7ed3\u679c\u7684\u4e0d\u540c&#xff0c;\u7cfb\u7edf\u53ef\u80fd\u9700\u8981\u4ece  UpState  \u8f6c\u6362\u5230  MaintenanceState  &#xff0c;\u6216\u8005\u56e0\u4e3a\u5b8c\u6210\u7ef4\u62a4\u800c\u8f6c\u56de  UpState  \u3002 <\/p>\n<p> \u72b6\u6001\u8f6c\u6362\u7684\u903b\u8f91\u5fc5\u987b\u88ab\u59a5\u5584\u5904\u7406&#xff0c;\u4ee5\u786e\u4fdd\u7cfb\u7edf\u72b6\u6001\u7684\u51c6\u786e\u6027\u548c\u4e00\u81f4\u6027\u3002\u5728\u8bbe\u8ba1\u4e0a&#xff0c;\u901a\u5e38\u662f\u5728\u72b6\u6001\u7c7b\u7684\u65b9\u6cd5\u5185\u90e8\u5b9e\u73b0\u72b6\u6001\u8f6c\u6362\u7684\u903b\u8f91&#xff0c;\u6bd4\u5982\u5728  checkCPU  \u65b9\u6cd5\u4e2d\u5224\u65adCPU\u4f7f\u7528\u7387\u8fc7\u9ad8\u65f6&#xff0c;\u89e6\u53d1\u72b6\u6001\u4ece  UpState  \u5230  OverloadedState  \u7684\u8f6c\u6362\u3002 <\/p>\n<h3> 3.3 \u4e0a\u4e0b\u6587\u7c7b\u7684\u4f5c\u7528\u4e0e\u5b9e\u73b0 <\/h3>\n<h4> 3.3.1 \u4e0a\u4e0b\u6587\u7c7b\u4e0e\u72b6\u6001\u7ba1\u7406 <\/h4>\n<p> \u5728\u72b6\u6001\u6a21\u5f0f\u4e2d&#xff0c;\u4e0a\u4e0b\u6587\u7c7b\u8d1f\u8d23\u7ef4\u62a4\u5bf9\u72b6\u6001\u5bf9\u8c61\u7684\u5f15\u7528&#xff0c;\u5e76\u901a\u8fc7\u72b6\u6001\u63a5\u53e3\u4e0e\u72b6\u6001\u5bf9\u8c61\u901a\u4fe1&#xff0c;\u8ba9\u72b6\u6001\u5bf9\u8c61\u63a7\u5236\u5176\u884c\u4e3a\u3002 <\/p>\n<p> \u4e0a\u4e0b\u6587\u7c7b\u662f\u5ba2\u6237\u7aef\u548c\u72b6\u6001\u903b\u8f91\u4e4b\u95f4\u7684\u4e2d\u4ecb&#xff0c;\u5b83\u5c01\u88c5\u4e86\u72b6\u6001\u4fe1\u606f&#xff0c;\u5e76\u63d0\u4f9b\u7ed9\u5ba2\u6237\u7aef\u4e00\u4e2a\u4e0e\u72b6\u6001\u903b\u8f91\u4ea4\u4e92\u7684\u7edf\u4e00\u65b9\u5f0f\u3002\u4e0a\u4e0b\u6587\u7c7b\u53ef\u80fd\u9700\u8981\u5b58\u50a8\u72b6\u6001\u5bf9\u8c61&#xff0c;\u8ffd\u8e2a\u5f53\u524d\u72b6\u6001&#xff0c;\u5e76\u5728\u9002\u5f53\u7684\u65f6\u5019\u89e6\u53d1\u72b6\u6001\u8f6c\u6362\u3002 <\/p>\n<h4> 3.3.2 \u4e0a\u4e0b\u6587\u7c7b\u4e2d\u7684\u72b6\u6001\u5207\u6362\u673a\u5236 <\/h4>\n<p> \u4e0a\u4e0b\u6587\u7c7b\u4e2d\u7684\u72b6\u6001\u5207\u6362\u673a\u5236\u662f\u5b9e\u73b0\u52a8\u6001\u884c\u4e3a\u7684\u5173\u952e\u3002\u4f8b\u5982&#xff0c;\u4e0a\u4e0b\u6587\u7c7b\u53ef\u80fd\u5305\u542b\u4ee5\u4e0b\u903b\u8f91&#xff1a; <\/p>\n<p>public class Context {<br \/>\n    private ServerState state;<\/p>\n<p>    public void setState(ServerState state) {<br \/>\n        this.state &#061; state;<br \/>\n    }<\/p>\n<p>    public void request() {<br \/>\n        state.handle(this);<br \/>\n    }<br \/>\n}<\/p>\n<p> \u5728\u8fd9\u4e2a\u7b80\u5355\u7684\u4e0a\u4e0b\u6587\u7c7b\u4e2d&#xff0c;  setState  \u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u5f53\u524d\u72b6\u6001&#xff0c;\u800c  request  \u65b9\u6cd5\u7528\u4e8e\u89e6\u53d1\u5f53\u524d\u72b6\u6001\u7684\u5904\u7406\u903b\u8f91\u3002\u8fd9\u6837&#xff0c;\u5f53\u9700\u8981\u6539\u53d8\u72b6\u6001\u65f6&#xff0c;\u53ea\u9700\u66f4\u6362\u4e0a\u4e0b\u6587\u4e2d\u7684\u72b6\u6001\u5bf9\u8c61\u5373\u53ef\u5b9e\u73b0\u72b6\u6001\u7684\u5207\u6362\u3002 <\/p>\n<p> \u5728\u672c\u5c0f\u8282\u4e2d&#xff0c;\u6211\u4eec\u8be6\u7ec6\u63a2\u8ba8\u4e86\u72b6\u6001\u6a21\u5f0f\u5b9e\u73b0\u8fc7\u7a0b\u4e2d\u7684\u5173\u952e\u7ec4\u4ef6&#xff1a;\u72b6\u6001\u63a5\u53e3\u3001\u5177\u4f53\u72b6\u6001\u7c7b\u4ee5\u53ca\u4e0a\u4e0b\u6587\u7c7b\u7684\u4f5c\u7528\u4e0e\u5b9e\u73b0\u3002\u901a\u8fc7\u4e0a\u8ff0\u4ee3\u7801\u548c\u63cf\u8ff0&#xff0c;\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u72b6\u6001\u6a21\u5f0f\u5982\u4f55\u5c06\u72b6\u6001\u903b\u8f91\u62bd\u8c61\u5316\u3001\u5c01\u88c5\u5316&#xff0c;\u5e76\u901a\u8fc7\u63a5\u53e3\u4e0e\u5177\u4f53\u7c7b\u7684\u914d\u5408\u5b9e\u73b0\u7075\u6d3b\u7684\u72b6\u6001\u7ba1\u7406\u3002\u5728\u4e0b\u4e00\u8282\u4e2d&#xff0c;\u6211\u4eec\u5c06\u7ee7\u7eed\u6df1\u5165\u4e86\u89e3\u72b6\u6001\u6a21\u5f0f\u5728\u5b9e\u9645\u76d1\u63a7\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528&#xff0c;\u4ee5\u53ca\u5982\u4f55\u901a\u8fc7\u72b6\u6001\u6a21\u5f0f\u4f18\u5316\u76d1\u63a7\u903b\u8f91\u3002 <\/p>\n<h2> 4. \u72b6\u6001\u6a21\u5f0f\u7684\u4f18\u52bf\u5206\u6790 <\/h2>\n<p> \u5728\u73b0\u4ee3\u8f6f\u4ef6\u8bbe\u8ba1\u4e2d&#xff0c;\u72b6\u6001\u6a21\u5f0f&#xff08;State Pattern&#xff09;\u662f\u4e00\u79cd\u88ab\u5e7f\u6cdb\u5e94\u7528\u7684\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f&#xff0c;\u5b83\u5141\u8bb8\u4e00\u4e2a\u5bf9\u8c61\u5728\u5176\u5185\u90e8\u72b6\u6001\u6539\u53d8\u65f6\u6539\u53d8\u5b83\u7684\u884c\u4e3a\u3002\u72b6\u6001\u6a21\u5f0f\u7684\u5173\u952e\u5728\u4e8e\u5c06\u72b6\u6001\u76f8\u5173\u7684\u884c\u4e3a\u5c01\u88c5\u6210\u5355\u72ec\u7684\u7c7b&#xff0c;\u5e76\u901a\u8fc7\u4e00\u4e2a\u7edf\u4e00\u7684\u63a5\u53e3\u6765\u8c03\u7528\u8fd9\u4e9b\u884c\u4e3a\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027&#xff0c;\u8fd8\u589e\u5f3a\u4e86\u53ef\u6269\u5c55\u6027&#xff0c;\u56e0\u4e3a\u6dfb\u52a0\u65b0\u7684\u72b6\u6001\u53d8\u4f53\u53ea\u9700\u8981\u6dfb\u52a0\u65b0\u7684\u72b6\u6001\u7c7b&#xff0c;\u800c\u4e0d\u9700\u8981\u4fee\u6539\u73b0\u6709\u4ee3\u7801\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u63a2\u8ba8\u72b6\u6001\u6a21\u5f0f\u7684\u4f18\u52bf&#xff0c;\u5305\u62ec\u4ee3\u7801\u7ed3\u6784\u7684\u4f18\u5316\u4ee5\u53ca\u4e0e\u5176\u4ed6\u8bbe\u8ba1\u6a21\u5f0f\u7684\u6bd4\u8f83\u3002 <\/p>\n<h3> 4.1 \u4ee3\u7801\u7ed3\u6784\u7684\u4f18\u5316 <\/h3>\n<h4> 4.1.1 \u72b6\u6001\u903b\u8f91\u7684\u96c6\u4e2d\u7ba1\u7406 <\/h4>\n<p> \u72b6\u6001\u6a21\u5f0f\u901a\u8fc7\u5f15\u5165\u4e00\u4e2a\u72b6\u6001\u63a5\u53e3\u4ee5\u53ca\u4e00\u7cfb\u5217\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u5177\u4f53\u72b6\u6001\u7c7b&#xff0c;\u5c06\u4e0e\u72b6\u6001\u76f8\u5173\u7684\u884c\u4e3a\u903b\u8f91\u96c6\u4e2d\u7ba1\u7406\u3002\u8fd9\u79cd\u65b9\u5f0f\u76f8\u8f83\u4e8e\u4f7f\u7528\u5927\u91cf\u7684if-else\u6216switch-case\u8bed\u53e5\u6765\u5904\u7406\u4e0d\u540c\u7684\u72b6\u6001&#xff0c;\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u6a21\u5757\u5316\u548c\u53ef\u8bfb\u3002 <\/p>\n<p>public interface State {<br \/>\n    void handle(Context context);<br \/>\n}<\/p>\n<p>public class ConcreteStateA implements State {<br \/>\n    public void handle(Context context) {<br \/>\n        \/\/ \u5904\u7406\u72b6\u6001A\u7684\u884c\u4e3a<br \/>\n    }<br \/>\n}<\/p>\n<p>public class ConcreteStateB implements State {<br \/>\n    public void handle(Context context) {<br \/>\n        \/\/ \u5904\u7406\u72b6\u6001B\u7684\u884c\u4e3a<br \/>\n    }<br \/>\n}<\/p>\n<p>public class Context {<br \/>\n    private State state;<br \/>\n    public void setState(State state) {<br \/>\n        this.state &#061; state;<br \/>\n    }<br \/>\n    public void request() {<br \/>\n        state.handle(this);<br \/>\n    }<br \/>\n}<\/p>\n<p> \u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u72b6\u6001\u63a5\u53e3  State  &#xff0c;\u4ee5\u53ca\u4e24\u4e2a\u5177\u4f53\u72b6\u6001\u7c7b  ConcreteStateA  \u548c  ConcreteStateB  \u3002\u901a\u8fc7  Context  \u7c7b&#xff0c;\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u5f53\u524d\u72b6\u6001\u59d4\u6258\u7ed9\u5bf9\u5e94\u7684\u884c\u4e3a\u7c7b\u6765\u6267\u884c\u5177\u4f53\u7684\u903b\u8f91\u3002\u72b6\u6001\u903b\u8f91\u7684\u96c6\u4e2d\u7ba1\u7406\u5927\u5927\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002 <\/p>\n<h4> 4.1.2 \u7cfb\u7edf\u72b6\u6001\u53d8\u66f4\u7684\u7075\u6d3b\u6027\u4e0e\u53ef\u7ef4\u62a4\u6027 <\/h4>\n<p> \u72b6\u6001\u6a21\u5f0f\u7684\u53e6\u4e00\u4e2a\u660e\u663e\u4f18\u52bf\u662f\u5b83\u4f7f\u5f97\u7cfb\u7edf\u5728\u72b6\u6001\u53d8\u66f4\u65f6\u8868\u73b0\u5f97\u66f4\u52a0\u7075\u6d3b\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u4e0d\u4fee\u6539\u4efb\u4f55\u73b0\u6709\u7c7b\u7684\u60c5\u51b5\u4e0b&#xff0c;\u6dfb\u52a0\u65b0\u7684\u72b6\u6001\u7c7b&#xff0c;\u6216\u8005\u4fee\u6539\u73b0\u6709\u72b6\u6001\u7c7b\u7684\u884c\u4e3a\u3002\u8fd9\u79cd\u7075\u6d3b\u6027\u662f\u4f20\u7edf\u57fa\u4e8e\u6761\u4ef6\u8bed\u53e5\u7684\u72b6\u6001\u5904\u7406\u6240\u65e0\u6cd5\u6bd4\u62df\u7684\u3002 <\/p>\n<p>public class ConcreteStateC implements State {<br \/>\n    public void handle(Context context) {<br \/>\n        \/\/ \u5904\u7406\u72b6\u6001C\u7684\u884c\u4e3a<br \/>\n        \/\/ \u53ef\u80fd\u4f1a\u6839\u636e\u9700\u8981\u6539\u53d8\u7cfb\u7edf\u72b6\u6001\u5230\u5176\u4ed6\u72b6\u6001<br \/>\n        context.setState(new ConcreteStateA());<br \/>\n    }<br \/>\n}<\/p>\n<p> \u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;  ConcreteStateC  \u5728\u6267\u884c\u5b8c\u81ea\u5df1\u7684\u903b\u8f91\u540e&#xff0c;\u53ef\u4ee5\u5c06  Context  \u4e2d\u7684\u72b6\u6001\u8f6c\u6362\u4e3a\u53e6\u4e00\u4e2a\u72b6\u6001&#xff0c;\u6bd4\u5982  ConcreteStateA  \u3002\u8fd9\u6837\u7684\u8bbe\u8ba1\u4f7f\u5f97\u6574\u4e2a\u7cfb\u7edf\u66f4\u52a0\u7075\u6d3b&#xff0c;\u72b6\u6001\u4e4b\u95f4\u7684\u8f6c\u6362\u548c\u903b\u8f91\u5904\u7406\u53ef\u4ee5\u901a\u8fc7\u7b80\u5355\u5730\u6dfb\u52a0\u6216\u4fee\u6539\u72b6\u6001\u7c7b\u6765\u5b8c\u6210&#xff0c;\u800c\u65e0\u9700\u6539\u52a8\u5176\u4ed6\u90e8\u5206\u7684\u4ee3\u7801\u3002 <\/p>\n<h3> 4.2 \u72b6\u6001\u6a21\u5f0f\u4e0e\u5176\u4ed6\u8bbe\u8ba1\u6a21\u5f0f\u7684\u6bd4\u8f83 <\/h3>\n<h4> 4.2.1 \u72b6\u6001\u6a21\u5f0f\u4e0e\u5355\u4f8b\u6a21\u5f0f\u3001\u7b56\u7565\u6a21\u5f0f\u7684\u533a\u522b <\/h4>\n<p> \u72b6\u6001\u6a21\u5f0f\u4e0e\u5355\u4f8b\u6a21\u5f0f\u548c\u7b56\u7565\u6a21\u5f0f\u867d\u7136\u90fd\u662f\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f&#xff0c;\u4f46\u5b83\u4eec\u7684\u8bbe\u8ba1\u76ee\u7684\u548c\u5e94\u7528\u573a\u666f\u5404\u6709\u4e0d\u540c&#xff1a; <\/p>\n<ul>\n<li>  \u72b6\u6001\u6a21\u5f0f  \u5141\u8bb8\u4e00\u4e2a\u5bf9\u8c61\u5728\u5185\u90e8\u72b6\u6001\u6539\u53d8\u65f6\u6539\u53d8\u5b83\u7684\u884c\u4e3a&#xff0c;\u5bf9\u8c61\u770b\u8d77\u6765\u4f3c\u4e4e\u4fee\u6539\u4e86\u5b83\u7684\u7c7b\u3002 <\/li>\n<li>  \u5355\u4f8b\u6a21\u5f0f  \u786e\u4fdd\u4e00\u4e2a\u7c7b\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b&#xff0c;\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5168\u5c40\u8bbf\u95ee\u70b9\u3002 <\/li>\n<li>  \u7b56\u7565\u6a21\u5f0f  \u5b9a\u4e49\u4e00\u7cfb\u5217\u7b97\u6cd5&#xff0c;\u5e76\u5c06\u6bcf\u4e2a\u7b97\u6cd5\u5c01\u88c5\u8d77\u6765&#xff0c;\u4f7f\u5b83\u4eec\u53ef\u4ee5\u4e92\u6362\u4f7f\u7528\u3002 <\/li>\n<\/ul>\n<p> \u8fd9\u4e09\u79cd\u6a21\u5f0f\u901a\u8fc7\u4e0d\u540c\u7684\u65b9\u5f0f\u6765\u89e3\u51b3\u8f6f\u4ef6\u8bbe\u8ba1\u95ee\u9898&#xff0c;\u72b6\u6001\u6a21\u5f0f\u4fa7\u91cd\u4e8e\u72b6\u6001\u884c\u4e3a\u7684\u5c01\u88c5\u4e0e\u52a8\u6001\u53d8\u6362&#xff0c;\u800c\u5355\u4f8b\u6a21\u5f0f\u5173\u6ce8\u7684\u662f\u5bf9\u8c61\u7684\u552f\u4e00\u5b9e\u4f8b\u5316&#xff0c;\u7b56\u7565\u6a21\u5f0f\u5219\u5173\u6ce8\u7b97\u6cd5\u7684\u7075\u6d3b\u5207\u6362\u3002 <\/p>\n<h4> 4.2.2 \u72b6\u6001\u6a21\u5f0f\u7684\u4f18\u52bf\u4e0e\u5c40\u9650\u6027 <\/h4>\n<p> \u72b6\u6001\u6a21\u5f0f\u7684\u4f18\u52bf\u5728\u4e8e&#xff1a; <\/p>\n<ul>\n<li>  \u96c6\u4e2d\u7ba1\u7406\u72b6\u6001\u884c\u4e3a  &#xff1a;\u6240\u6709\u7684\u72b6\u6001\u884c\u4e3a\u90fd\u5c01\u88c5\u5728\u5404\u81ea\u7684\u72b6\u6001\u7c7b\u4e2d&#xff0c;\u4f7f\u5f97\u72b6\u6001\u903b\u8f91\u6e05\u6670\u4e14\u6613\u4e8e\u7ba1\u7406\u3002 <\/li>\n<li>  \u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027  &#xff1a;\u72b6\u6001\u7684\u589e\u52a0\u3001\u5220\u9664\u6216\u4fee\u6539\u4e0d\u9700\u8981\u6539\u52a8\u5176\u4ed6\u72b6\u6001\u7c7b\u6216\u4e0a\u4e0b\u6587\u7c7b\u3002 <\/li>\n<li>  \u589e\u5f3a\u4ee3\u7801\u7684\u53ef\u6269\u5c55\u6027  &#xff1a;\u6dfb\u52a0\u65b0\u7684\u72b6\u6001\u53ea\u9700\u6dfb\u52a0\u65b0\u7684\u72b6\u6001\u7c7b&#xff0c;\u65e0\u9700\u4fee\u6539\u73b0\u6709\u4ee3\u7801\u3002 <\/li>\n<\/ul>\n<p> \u7136\u800c&#xff0c;\u72b6\u6001\u6a21\u5f0f\u4e5f\u6709\u5c40\u9650\u6027&#xff1a; <\/p>\n<ul>\n<li>  \u589e\u52a0\u7c7b\u7684\u6570\u91cf  &#xff1a;\u4e3a\u4e86\u5b9e\u73b0\u72b6\u6001\u6a21\u5f0f&#xff0c;\u9879\u76ee\u4e2d\u53ef\u80fd\u9700\u8981\u5f15\u5165\u66f4\u591a\u7684\u7c7b&#xff0c;\u8fd9\u53ef\u80fd\u4f1a\u589e\u52a0\u7cfb\u7edf\u7684\u590d\u6742\u6027\u3002 <\/li>\n<li>  \u72b6\u6001\u8fc7\u591a\u5bfc\u81f4\u7ba1\u7406\u56f0\u96be  &#xff1a;\u5982\u679c\u72b6\u6001\u79cd\u7c7b\u975e\u5e38\u591a&#xff0c;\u7ef4\u62a4\u8fd9\u4e9b\u72b6\u6001\u7c7b\u53ef\u80fd\u4f1a\u53d8\u5f97\u6bd4\u8f83\u56f0\u96be\u3002 <\/li>\n<\/ul>\n<p> \u4e3a\u4e86\u5229\u7528\u72b6\u6001\u6a21\u5f0f\u7684\u4f18\u52bf\u5e76\u5c3d\u91cf\u907f\u514d\u5176\u5c40\u9650\u6027&#xff0c;\u8bbe\u8ba1\u65f6\u5e94\u8be5\u4ed4\u7ec6\u8003\u8651\u72b6\u6001\u7684\u5212\u5206&#xff0c;\u5c3d\u91cf\u907f\u514d\u8bbe\u8ba1\u51fa\u8fc7\u4e8e\u590d\u6742\u7684\u72b6\u6001\u6a21\u578b\u3002 <\/p>\n<p> \u5728\u603b\u7ed3\u72b6\u6001\u6a21\u5f0f\u7684\u5206\u6790\u540e&#xff0c;\u6211\u4eec\u4e86\u89e3\u5230\u8be5\u6a21\u5f0f\u5728\u4f18\u5316\u4ee3\u7801\u7ed3\u6784\u3001\u63d0\u9ad8\u7cfb\u7edf\u7075\u6d3b\u6027\u65b9\u9762\u7684\u4f18\u52bf\u3002\u7136\u800c&#xff0c;\u4efb\u4f55\u6280\u672f\u90fd\u6709\u5176\u9002\u7528\u573a\u666f&#xff0c;\u72b6\u6001\u6a21\u5f0f\u4e5f\u4e0d\u4f8b\u5916\u3002\u5728\u5e94\u7528\u72b6\u6001\u6a21\u5f0f\u65f6&#xff0c;\u8003\u8651\u5176\u4f18\u52bf\u4e0e\u6f5c\u5728\u7684\u590d\u6742\u6027&#xff0c;\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u8bbe\u8ba1\u548c\u5b9e\u73b0\u8f6f\u4ef6\u7cfb\u7edf&#xff0c;\u5c24\u5176\u662f\u5728\u9700\u8981\u5904\u7406\u590d\u6742\u72b6\u6001\u903b\u8f91\u7684\u76d1\u63a7\u7cfb\u7edf\u4e2d\u3002\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55&#xff0c;\u72b6\u6001\u6a21\u5f0f\u4ecd\u5c06\u6301\u7eed\u6f14\u5316&#xff0c;\u4e3a\u8f6f\u4ef6\u8bbe\u8ba1\u63d0\u4f9b\u65b0\u7684\u89e3\u51b3\u65b9\u6848\u3002 <\/p>\n<h2> 5. \u7ed3\u5408SNMP\u63d0\u5347\u76d1\u63a7\u80fd\u529b <\/h2>\n<p> \u7b80\u5355\u7f51\u7edc\u7ba1\u7406\u534f\u8bae&#xff08;SNMP&#xff09;\u662f\u7f51\u7edc\u8bbe\u5907\u4e0a\u5b9e\u73b0\u8fdc\u7a0b\u76d1\u63a7\u548c\u914d\u7f6e\u7684\u6807\u51c6\u534f\u8bae&#xff0c;\u5b83\u5141\u8bb8\u7ba1\u7406\u4eba\u5458\u76d1\u63a7\u7f51\u7edc\u8bbe\u5907\u7684\u6027\u80fd&#xff0c;\u8bca\u65ad\u7f51\u7edc\u95ee\u9898&#xff0c;\u914d\u7f6e\u7279\u5b9a\u7684\u8bbe\u5907\u53c2\u6570\u3002\u72b6\u6001\u6a21\u5f0f\u4e0eSNMP\u7ed3\u5408&#xff0c;\u80fd\u591f\u589e\u5f3a\u7cfb\u7edf\u5bf9\u670d\u52a1\u5668\u72b6\u6001\u53d8\u5316\u7684\u54cd\u5e94\u80fd\u529b\u548c\u7075\u6d3b\u6027\u3002 <\/p>\n<h3> 5.1 SNMP\u534f\u8bae\u57fa\u7840\u4e0e\u5e94\u7528\u573a\u666f <\/h3>\n<h4> 5.1.1 SNMP\u7684\u539f\u7406\u53ca\u7248\u672c <\/h4>\n<p> SNMP\u7684\u6838\u5fc3\u539f\u7406\u662f\u8ba9\u4e00\u4e2a\u7f51\u7edc\u7ba1\u7406\u7cfb\u7edf(NMS)\u901a\u8fc7\u8f6e\u8be2&#xff08;Polling&#xff09;\u6216\u9677\u9631&#xff08;Trap&#xff09;\u673a\u5236\u4e0e\u7f51\u7edc\u8bbe\u5907\u8fdb\u884c\u4ea4\u4e92\u3002\u5176\u4e2d&#xff0c;\u8f6e\u8be2\u662f\u4e00\u79cd\u4e3b\u52a8\u67e5\u8be2\u65b9\u5f0f&#xff0c;\u800c\u9677\u9631\u662f\u4e00\u79cd\u88ab\u52a8\u901a\u77e5\u65b9\u5f0f&#xff0c;\u5141\u8bb8\u8bbe\u5907\u5728\u68c0\u6d4b\u5230\u7279\u5b9a\u4e8b\u4ef6\u65f6\u4e3b\u52a8\u901a\u77e5\u7ba1\u7406\u7ad9\u3002SNMP\u534f\u8bae\u6709\u591a\u4e2a\u7248\u672c&#xff0c;\u5176\u4e2dSNMPv1\u3001SNMPv2c\u548cSNMPv3\u6700\u4e3a\u5e38\u7528\u3002SNMPv1\u548cSNMPv2c\u5728\u5b89\u5168\u6027\u65b9\u9762\u5b58\u5728\u7f3a\u9677&#xff0c;\u56e0\u6b64\u5728\u5b89\u5168\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u73af\u5883\u4e2d&#xff0c;\u63a8\u8350\u4f7f\u7528SNMPv3\u3002SNMPv3\u63d0\u4f9b\u7528\u6237\u8ba4\u8bc1\u548c\u6570\u636e\u52a0\u5bc6\u529f\u80fd&#xff0c;\u786e\u4fdd\u7f51\u7edc\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u6570\u636e\u5b89\u5168\u3002 <\/p>\n<h4> 5.1.2 SNMP\u5728\u670d\u52a1\u5668\u72b6\u6001\u76d1\u63a7\u4e2d\u7684\u4f5c\u7528 <\/h4>\n<p> \u5728\u670d\u52a1\u5668\u76d1\u63a7\u9886\u57df&#xff0c;SNMP\u53ef\u4ee5\u7528\u6765\u5b9e\u65f6\u76d1\u63a7\u670d\u52a1\u5668\u7684\u5404\u79cd\u72b6\u6001\u4fe1\u606f&#xff0c;\u6bd4\u5982CPU\u8d1f\u8f7d\u3001\u5185\u5b58\u4f7f\u7528\u7387\u3001\u78c1\u76d8\u7a7a\u95f4\u548c\u7f51\u7edc\u63a5\u53e3\u72b6\u6001\u7b49\u3002\u901a\u8fc7SNMP\u53ef\u4ee5\u6536\u96c6\u5230\u8fd9\u4e9b\u5173\u952e\u6027\u80fd\u6307\u6807&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u9608\u503c\u89e6\u53d1\u62a5\u8b66\u673a\u5236&#xff0c;\u5982\u90ae\u4ef6\u3001\u77ed\u4fe1\u7b49&#xff0c;\u53ca\u65f6\u901a\u77e5\u7ba1\u7406\u5458\u8fdb\u884c\u54cd\u5e94\u3002\u6b64\u5916&#xff0c;SNMP\u8fd8\u652f\u6301\u83b7\u53d6\u64cd\u4f5c\u7cfb\u7edf\u7279\u5b9a\u7684MIB&#xff08;Management Information Base&#xff09;\u4fe1\u606f&#xff0c;\u8fd9\u5bf9\u4e8e\u7efc\u5408\u6027\u7684\u670d\u52a1\u5668\u76d1\u63a7\u7cfb\u7edf\u6765\u8bf4\u5c24\u4e3a\u91cd\u8981\u3002 <\/p>\n<h3> 5.2 SNMP\u4e0e\u72b6\u6001\u6a21\u5f0f\u7684\u7ed3\u5408\u5b9e\u8df5 <\/h3>\n<h4> 5.2.1 \u5229\u7528SNMP\u83b7\u53d6\u670d\u52a1\u5668\u72b6\u6001\u4fe1\u606f <\/h4>\n<p> \u4f7f\u7528SNMP\u83b7\u53d6\u670d\u52a1\u5668\u72b6\u6001\u4fe1\u606f\u901a\u5e38\u6d89\u53ca\u7f16\u5199\u4e00\u4e2aSNMP\u5ba2\u6237\u7aef\u7a0b\u5e8f\u3002\u8fd9\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u662f\u4e00\u4e2a\u547d\u4ee4\u884c\u5de5\u5177\u3001\u4e00\u4e2a\u5b88\u62a4\u8fdb\u7a0b\u6216\u4e00\u4e2a\u670d\u52a1&#xff0c;\u5176\u4e3b\u8981\u529f\u80fd\u662f\u4f5c\u4e3a\u7ba1\u7406\u4fe1\u606f\u7cfb\u7edf&#xff08;MIB&#xff09;\u548c\u7ba1\u7406\u7ad9\u4e4b\u95f4\u7684\u4e2d\u4ecb&#xff0c;\u4ece\u670d\u52a1\u5668\u4e0a\u6536\u96c6\u6570\u636e\u3002\u4f8b\u5982&#xff0c;\u53ef\u4ee5\u4f7f\u7528Net-SNMP\u5305\u4e2d\u7684\u5de5\u5177\u6765\u67e5\u8be2\u670d\u52a1\u5668\u7684MIB\u6811\u3002 <\/p>\n<p>snmpwalk -v 2c -c public 192.168.1.1 system<\/p>\n<p> \u4e0a\u8ff0\u547d\u4ee4\u4f7f\u7528  snmpwalk  \u5de5\u5177\u6267\u884c&#xff0c;\u5176\u4f5c\u7528\u662f\u67e5\u8be2IP\u5730\u5740\u4e3a  192.168.1.1  \u7684\u8bbe\u5907\u4e0a\u7684  system  MIB\u3002\u8f93\u51fa\u7ed3\u679c\u4f1a\u5305\u542b\u6240\u6709\u7cfb\u7edf\u76f8\u5173\u7684MIB\u4fe1\u606f&#xff0c;\u5982\u7cfb\u7edf\u63cf\u8ff0\u3001\u4f4d\u7f6e\u3001\u63a5\u89e6\u4fe1\u606f\u7b49\u3002 <\/p>\n<h4> 5.2.2 \u72b6\u6001\u6a21\u5f0f\u5728SNMP\u6570\u636e\u5904\u7406\u4e2d\u7684\u5e94\u7528 <\/h4>\n<p> \u72b6\u6001\u6a21\u5f0f\u53ef\u4ee5\u5c06\u4e0d\u540c\u72b6\u6001\u4e0b\u7684\u884c\u4e3a\u5c01\u88c5\u5230\u4e0d\u540c\u7684\u7c7b\u4e2d&#xff0c;\u901a\u8fc7\u4e0a\u4e0b\u6587\u7c7b\u6839\u636e\u5f53\u524d\u72b6\u6001\u59d4\u6258\u7ed9\u5bf9\u5e94\u7684\u7c7b\u8fdb\u884c\u5904\u7406\u3002\u5728SNMP\u6570\u636e\u5904\u7406\u4e2d&#xff0c;\u53ef\u4ee5\u5c06SNMP\u6570\u636e\u7684\u4e0d\u540c\u5904\u7406\u903b\u8f91\u5c01\u88c5\u5728\u5177\u4f53\u7684\u7c7b\u4e2d\u3002\u4f8b\u5982&#xff0c;\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a  SNMPHandler  \u63a5\u53e3&#xff0c;\u7136\u540e\u4e3a  Active  ,  Warning  ,  Critical  \u7b49\u72b6\u6001\u5b9e\u73b0\u5177\u4f53\u7684  SNMPHandler  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Prometheus\u7684\u67b6\u6784\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u6838\u5fc3\u7ec4\u4ef6&#xff1a; <\/p>\n<ul>\n<li>  Prometheus Server  &#xff1a;\u8d1f\u8d23\u6536\u96c6\u548c\u5b58\u50a8\u65f6\u95f4\u5e8f\u5217\u6570\u636e&#xff0c;\u540c\u65f6\u63d0\u4f9b\u67e5\u8be2\u548c\u544a\u8b66\u529f\u80fd\u3002 <\/li>\n<li>  Push Gateway  &#xff1a;\u5bf9\u4e8e\u77ed\u6682\u4efb\u52a1&#xff0c;Prometheus\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4e2d\u95f4\u7f51\u5173\u6765\u6536\u96c6\u6570\u636e\u3002 <\/li>\n<li>  Exporters  &#xff1a;\u7528\u4e8e\u4ece\u7279\u5b9a\u7684\u5e94\u7528\u7a0b\u5e8f\u6216\u670d\u52a1\u4e2d\u66b4\u9732\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u7684\u7ec4\u4ef6&#xff0c;\u4f8b\u5982node_exporter\u7528\u4e8e\u6536\u96c6\u670d\u52a1\u5668\u786c\u4ef6\u548c\u64cd\u4f5c\u7cfb\u7edf\u7ea7\u522b\u7684\u6307\u6807\u3002 <\/li>\n<li>  Alertmanager  &#xff1a;\u8d1f\u8d23\u5904\u7406Prometheus 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Language&#xff09;\u6765\u5206\u6790\u8fd9\u4e9b\u6570\u636e\u3002Prometheus\u8fd8\u652f\u6301\u521b\u5efa\u56fe\u8868\u548c\u4eea\u8868\u677f&#xff0c;\u4f46\u5b83\u66f4\u4e13\u6ce8\u4e8e\u6570\u636e\u7684\u67e5\u8be2\u548c\u544a\u8b66\u3002\u4e3a\u4e86\u6570\u636e\u53ef\u89c6\u5316\u548c\u66f4\u590d\u6742\u7684\u4eea\u8868\u677f\u5c55\u793a&#xff0c;\u901a\u5e38\u5c06Prometheus\u4e0eGrafana\u8fd9\u6837\u7684\u5de5\u5177\u7ed3\u5408\u4f7f\u7528\u3002 <\/li>\n<\/ul>\n<h4> 6.1.2 Prometheus\u7684\u6570\u636e\u91c7\u96c6\u4e0e\u5b58\u50a8\u673a\u5236 <\/h4>\n<p> 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<\/p>\n<h4> 7.1.2 \u72b6\u6001\u6a21\u5f0f\u7684\u5b9e\u8df5\u8fc7\u7a0b\u4e0e\u6548\u679c\u8bc4\u4f30 <\/h4>\n<p> \u5728\u5b9e\u65bd\u8fc7\u7a0b\u4e2d&#xff0c;\u9996\u5148\u5b9a\u4e49\u4e86\u51e0\u4e2a\u57fa\u672c\u72b6\u6001\u7c7b&#xff1a;  NormalState  \u3001  WarningState  \u3001  FaultState  &#xff0c;\u6bcf\u4e00\u4e2a\u72b6\u6001\u7c7b\u5b9e\u73b0\u4e86  handle  \u65b9\u6cd5\u6765\u5904\u7406\u5bf9\u5e94\u72b6\u6001\u4e0b\u7684\u903b\u8f91\u3002\u4e0a\u4e0b\u6587\u7c7b&#xff08;Context&#xff09;\u4f7f\u7528\u72b6\u6001\u63a5\u53e3\u6765\u7ba1\u7406\u5f53\u524d\u72b6\u6001&#xff0c;\u5e76\u8c03\u7528\u72b6\u6001\u7c7b\u4e2d\u7684  handle  \u65b9\u6cd5\u3002 <\/p>\n<p> \u5177\u4f53\u5b9e\u73b0\u6b65\u9aa4\u5982\u4e0b&#xff1a; <\/p>\n<li>\n<p> \u5b9a\u4e49\u72b6\u6001\u63a5\u53e3\u548c\u5404\u5177\u4f53\u72b6\u6001\u7c7b&#xff1a; &#096;&#096;&#096;java public interface State { void handle(Context context); } <\/p>\n<p> public class NormalState implements State { &#064;Override public void handle(Context context) { System.out.println(&#034;Current status is Normal.&#034;); \/\/ \u5b9e\u73b0\u6b63\u5e38\u72b6\u6001\u4e0b\u7684\u76d1\u63a7\u903b\u8f91 } } <\/p>\n<p> \/\/ WarningState \u548c FaultState \u5b9e\u73b0\u7c7b\u4f3c&#8230; &#096;&#096;&#096; <\/p>\n<\/li>\n<li>\n<p> \u5b9e\u73b0\u4e0a\u4e0b\u6587\u7c7b&#xff1a; &#096;&#096;&#096;java public class Context { private State state; <\/p>\n<p> public Context() {<br \/>\n    this.state &#061; new NormalState();  \/\/ \u521d\u59cb\u72b6\u6001\u4e3a\u6b63\u5e38<br \/>\n}<\/p>\n<p>public void setState(State state) {<br \/>\n    this.state &#061; state;<br \/>\n}<\/p>\n<p>public void request() {<br \/>\n    state.handle(this);<br \/>\n}<\/p>\n<p> } &#096;&#096;&#096; <\/p>\n<\/li>\n<li>\n<p> \u4ece\u5916\u90e8\u903b\u8f91\u89e6\u53d1\u72b6\u6001\u8f6c\u6362&#xff0c;\u6bd4\u5982\u6839\u636eSNMP\u83b7\u53d6\u7684\u6570\u636e&#xff1a;  java \/\/ 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