{"id":209981,"date":"2025-10-24T02:20:56","date_gmt":"2025-10-23T18:20:56","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209981\/"},"modified":"2025-10-24T02:20:57","modified_gmt":"2025-10-23T18:20:57","slug":"cdn-224","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209981\/","title":{"rendered":"\u9ad8\u6548CDN\u8282\u70b9\u72b6\u6001\u544a\u8b66\u7b56\u7565\uff1a\u5b9e\u65f6\u76d1\u6d4b\u4e0e\u81ea\u52a8\u5316\u5904\u7f6e"},"content":{"rendered":"<p>\u968f\u7740\u7f51\u7ad9\u548c\u5e94\u7528\u5bf9\u6027\u80fd\u4e0e\u53ef\u7528\u6027\u7684\u8981\u6c42\u4e0d\u65ad\u63d0\u9ad8\uff0cCDN 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conntrack\uff09\u3001\u76d1\u63a7\u63a2\u9488\u7684\u7ed3\u679c\u5171\u540c\u7528\u4e8e\u5224\u5b9a\uff0c\u907f\u514d\u5355\u4e00\u6570\u636e\u6e90\u8bef\u62a5\u3002<\/li>\n<li><strong>\u52a8\u6001\u9608\u503c\u4e0e\u57fa\u7ebf\u544a\u8b66<\/strong>\uff1a\u4f7f\u7528\u5386\u53f2\u6570\u636e\u5efa\u7acb\u8282\u70b9\u6027\u80fd\u57fa\u7ebf\uff08hour-of-day\/day-of-week\uff09\uff0c\u5f53\u504f\u79bb\u9608\u503c\uff08\u5982 3\u03c3\uff09\u65f6\u89e6\u53d1\u544a\u8b66\uff0c\u9002\u7528\u4e8e\u6d41\u91cf\u6709\u660e\u663e\u5cf0\u8c37\u7684\u7ad9\u70b9\u3002<\/li>\n<li><strong>\u544a\u8b66\u5206\u7ea7\u4e0e\u6291\u5236\uff08Dedup\/Rate-limiting\uff09<\/strong>\uff1a\u5bf9\u91cd\u590d\u544a\u8b66\u5408\u5e76\uff0c\u4f7f\u7528\u6291\u5236\u89c4\u5219\u907f\u514d\u5728\u5927\u89c4\u6a21\u4e8b\u4ef6\u4e2d\u89e6\u8fbe\u8fc7\u591a\u65e0\u610f\u4e49\u901a\u77e5\u3002<\/li>\n<li><strong>\u53ef\u9760\u7684\u544a\u8b66\u901a\u9053<\/strong>\uff1a\u652f\u6301\u90ae\u4ef6\u3001\u77ed\u4fe1\u3001Slack\u3001Webhook\u3001PagerDuty \u7b49\uff0c\u540c\u65f6\u786e\u4fdd\u544a\u8b66\u7cfb\u7edf\u672c\u8eab\u7684\u9ad8\u53ef\u7528\u3002<\/li>\n<\/ul>\n<h3>\u68c0\u6d4b\u9891\u7387\u4e0e\u6210\u672c\u6743\u8861<\/h3>\n<p>\u5408\u6210\u68c0\u6d4b\u9891\u7387\u8d8a\u9ad8\u53d1\u73b0\u95ee\u9898\u8d8a\u5feb\uff0c\u4f46\u6210\u672c\u4e0e\u63a2\u6d4b\u6d41\u91cf\u4e5f\u589e\u52a0\u3002\u5efa\u8bae\u5bf9\u91cd\u8981\u7ad9\u70b9\u6216\u5173\u952e\u8282\u70b9\uff08\u5982\u9762\u5411\u9999\u6e2f\u7528\u6237\u7684\u8fb9\u7f18\uff09\u91c7\u7528 10-30 \u79d2\u7ea7\u91c7\u6837\uff0c\u5bf9\u6b21\u8981\u533a\u57df\u91c7\u7528 1-5 \u5206\u949f\u3002\u5bf9\u4e8e\u56fd\u9645\u5316\u670d\u52a1\uff0c\u9700\u8986\u76d6\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u7b49\u5730\u7684\u63a2\u9488\uff0c\u4ee5\u4fbf\u7cbe\u51c6\u5b9a\u4f4d\u662f\u5355\u70b9\u6545\u969c\u8fd8\u662f\u5730\u533a\u6027\u7f51\u7edc\u95ee\u9898\u3002<\/p>\n<h2>\u81ea\u52a8\u5316\u5904\u7f6e\uff1a\u4ece\u544a\u8b66\u5230\u95ed\u73af<\/h2>\n<p>\u544a\u8b66\u53ea\u662f\u8d77\u70b9\uff0c\u5173\u952e\u5728\u4e8e\u80fd\u5426\u5feb\u901f\u6267\u884c\u81ea\u52a8\u5316\u5904\u7f6e\u4ee5\u6062\u590d\u670d\u52a1\u6216\u964d\u4f4e\u5f71\u54cd\u3002\u5e38\u89c1\u81ea\u52a8\u5316\u5904\u7f6e\u7b56\u7565\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5065\u5eb7\u8f6c\u79fb\uff08Traffic Steering\uff09<\/strong>\uff1a\u5f53\u67d0\u4e2a CDN \u8282\u70b9\u88ab\u5224\u5b9a\u4e3a Degraded\/Unhealthy \u65f6\uff0c\u81ea\u52a8\u5c06\u6d41\u91cf\u5f15\u5bfc\u5230\u90bb\u8fd1\u5065\u5eb7 PoP\uff08\u4f8b\u5982\u4ece\u9999\u6e2f PoP \u5207\u5230\u65b0\u52a0\u5761\u6216\u97e9\u56fd PoP\uff09\uff0c\u7ed3\u5408\u667a\u80fd DNS \u6216 BGP \u7b56\u7565\u3002<\/li>\n<li><strong>\u56de\u6e90\u9650\u6d41\u4e0e\u964d\u7ea7\u7b56\u7565<\/strong>\uff1a\u5728\u7f13\u5b58\u547d\u4e2d\u7387\u4e0b\u964d\u6216\u56de\u6e90\u8d1f\u8f7d\u8fc7\u9ad8\u65f6\uff0c\u81ea\u52a8\u5f00\u542f\u4fdd\u62a4\u6a21\u5f0f\uff08\u5982 503 \u66ff\u4ee3\u9875\u3001\u964d\u4f4e\u538b\u7f29\u8017\u65f6\u7684\u529f\u80fd\uff09\uff0c\u4ee5\u4fdd\u62a4\u6e90\u7ad9\uff08\u5305\u62ec\u6d77\u5916\u670d\u52a1\u5668\u5982\u7f8e\u56fd\u670d\u52a1\u5668\uff09\u3002<\/li>\n<li><strong>\u81ea\u52a8\u5316\u56de\u6eda\u4e0e\u914d\u7f6e\u4fee\u590d<\/strong>\uff1a\u901a\u8fc7 CD\/CI \u5de5\u5177\uff08Ansible\u3001Terraform\u3001Kubernetes Operator\uff09\u5b9e\u73b0\u914d\u7f6e\u56de\u6eda\u6216\u91cd\u542f\u670d\u52a1\u3002<\/li>\n<li><strong>\u5373\u65f6\u6e05\u7406\u4e0e\u7f13\u5b58\u5237\u65b0<\/strong>\uff1a\u5f53\u8282\u70b9\u51fa\u73b0\u7f13\u5b58\u6c61\u67d3\u6216\u957f\u5c3e\u9519\u8bef\u65f6\uff0c\u81ea\u52a8\u89e6\u53d1\u9488\u5bf9\u6027\u7f13\u5b58\u6e05\u7406\u6216\u5206\u533a\u5237\u65b0\u3002<\/li>\n<li><strong>\u811a\u672c\u5316\u81ea\u6108<\/strong>\uff1a\u901a\u8fc7\u4e91\u51fd\u6570\uff08Lambda\uff09\u3001Webhook \u8c03\u7528\u8fb9\u7f18 API \u5b8c\u6210\u7aef\u53e3\u91ca\u653e\u3001\u8fde\u63a5\u8868\u6e05\u7406\u6216\u8fdb\u7a0b\u91cd\u542f\u3002<\/li>\n<\/ul>\n<h3>\u96c6\u6210\u4e0e\u81ea\u52a8\u5316\u5b9e\u8df5\u793a\u4f8b<\/h3>\n<p>\u4e00\u4e2a\u5e38\u89c1\u5b9e\u8df5\u662f\u5c06 Prometheus + Alertmanager \u4f5c\u4e3a\u76d1\u63a7\u4e0e\u544a\u8b66\u8bc4\u4f30\u5c42\uff0cGrafana \u505a\u53ef\u89c6\u5316\uff0cAlertmanager \u6839\u636e\u5206\u7ec4\u89c4\u5219\u53d1\u9001\u901a\u77e5\u5e76\u89e6\u53d1 Webhook\u3002Webhook \u53ef\u8c03\u7528\u5185\u90e8\u8fd0\u7ef4\u7cfb\u7edf\u6216\u7b2c\u4e09\u65b9\u670d\u52a1\uff08\u5982 PagerDuty\uff09\uff0c\u540c\u65f6\u89e6\u53d1\u81ea\u52a8\u5316\u811a\u672c\uff08\u4f8b\u5982 Ansible playbook\uff09\u53bb\u6267\u884c\u6d41\u91cf\u5207\u6362\u6216\u6e05\u7406\u7f13\u5b58\u3002\u5bf9\u4e8e\u9ad8\u5cf0\u65f6\u6bb5\uff0c\u914d\u5408 Terraform \u81ea\u52a8\u6269\u5bb9\u6216\u5728 Kubernetes 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