[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n

\u7f51\u7edc\u4f18\u5316\u89e3\u51b3\u65b9\u6848<\/strong><\/h2>\n

\u5b9e\u65bd\u5f3a\u5927\u7684\u7f51\u7edc\u4f18\u5316\u7b56\u7565\u662f\u7ef4\u6301\u670d\u52a1\u5668\u7a33\u5b9a\u6027\u7684\u57fa\u7840\u3002\u4ee5\u4e0b\u662f\u7ed3\u5408\u6700\u65b0\u884c\u4e1a\u6700\u4f73\u5b9e\u8df5\u7684\u6280\u672f\u7ec6\u8282\u5206\u6790\uff1a<\/p>\n

\n
• \u9ad8\u7ea7DNS\u914d\u7f6e\n
  \n
  • \u5b9e\u65bd\u5177\u6709\u5168\u7403\u8d1f\u8f7d\u5747\u8861\u7684\u4efb\u64adDNS\u67b6\u6784<\/li>\n
  • \u914d\u7f6eDNS\u8f6e\u8be2\uff0c\u6bcf30\u79d2\u8fdb\u884c\u4e00\u6b21\u6d3b\u8dc3\u6027\u68c0\u67e5<\/li>\n
  • \u90e8\u7f72\u4f7f\u75282048\u4f4dRSA\u5bc6\u94a5\u7684DNSSEC\u4ee5\u589e\u5f3a\u5b89\u5168\u6027<\/li>\n
  • \u5b9e\u65bd\u57fa\u4e8eDNS\u7684\u6545\u969c\u8f6c\u79fb\u673a\u5236<\/li>\n
  • \u914d\u7f6e\u8d1fTTL\u7f13\u5b58\u4f18\u5316<\/li>\n
  • \u8bbe\u7f6eDNS\u67e5\u8be2\u65e5\u5fd7\u4ee5\u8fdb\u884c\u6545\u969c\u6392\u9664<\/li>\n
  • \u5b9e\u65bd\u5206\u79bb\u89c6\u56feDNS\u7528\u4e8e\u5185\u90e8\/\u5916\u90e8\u89e3\u6790<\/li>\n<\/ul>\n<\/li>\n
  • CDN\u5b9e\u65bd\n
    \n
    • \u4f7f\u7528Lambda@Edge\u51fd\u6570\u8bbe\u7f6e\u8fb9\u7f18\u8ba1\u7b97\u80fd\u529b<\/li>\n
    • \u914d\u7f6e\u5177\u6709\u7f13\u5b58\u4e00\u81f4\u6027\u534f\u8bae\u7684\u52a8\u6001\u5185\u5bb9\u7f13\u5b58<\/li>\n
    • \u5b9e\u65bd\u591a\u5c42\u6e90\u7ad9\u4fdd\u62a4<\/li>\n
    • \u542f\u7528\u667a\u80fd\u6e05\u9664\u673a\u5236\u7528\u4e8e\u5185\u5bb9\u66f4\u65b0<\/li>\n
    • \u914d\u7f6eCDN\u6027\u80fd\u7684\u5b9e\u65f6\u5206\u6790<\/li>\n
    • \u5b9e\u65bd\u591aCDN\u6545\u969c\u8f6c\u79fb\u7b56\u7565<\/li>\n
    • \u914d\u7f6e\u5730\u7406\u8def\u7531\u4f18\u5316<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

      [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n

      \u670d\u52a1\u5668\u914d\u7f6e\u4f18\u5316<\/strong><\/h2>\n

      \u9002\u5f53\u7684\u670d\u52a1\u5668\u914d\u7f6e\u5bf9\u4e8e\u7ef4\u6301\u6700\u4f73\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002\u8003\u8651\u4ee5\u4e0b\u9ad8\u7ea7\u6280\u672f\u8c03\u6574\uff1a<\/p>\n

      \n
      • \u5185\u6838\u53c2\u6570\u8c03\u4f18\uff1a\n

        # \u7f51\u7edc\u4f18\u5316\r\nnet.ipv4.tcp_max_syn_backlog = 4096\r\nnet.core.somaxconn = 65535\r\nnet.ipv4.tcp_fin_timeout = 30\r\nnet.ipv4.tcp_keepalive_time = 300\r\nnet.ipv4.tcp_max_tw_buckets = 262144\r\nnet.ipv4.tcp_tw_reuse = 1\r\nnet.ipv4.tcp_fastopen = 3\r\n\r\n# \u5185\u5b58\u7ba1\u7406\r\nvm.swappiness = 10\r\nvm.dirty_ratio = 60\r\nvm.dirty_background_ratio = 2<\/code><\/pre>\n<\/li>\n
        \u8d44\u6e90\u5206\u914d\uff1a\n
        \n
        \u9488\u5bf9\u5173\u952e\u8fdb\u7a0b\u5b9e\u65bd\u5177\u6709NUMA\u611f\u77e5\u7684CPU\u7ed1\u5b9a<\/li>\n
        \u914d\u7f6e\u5177\u6709\u4ea4\u9519\u7684NUMA\u611f\u77e5\u5185\u5b58\u5206\u914d<\/li>\n
        \u9488\u5bf9\u4e0d\u540c\u5de5\u4f5c\u8d1f\u8f7d\u7c7b\u578b\u4f18\u5316I\/O\u8c03\u5ea6\u5668\u8bbe\u7f6e<\/li>\n
        \u5b9e\u65bd\u8d44\u6e90\u9694\u79bb\u7684cgroup\u7ea6\u675f<\/li>\n
        \u4e3a\u6570\u636e\u5e93\u5de5\u4f5c\u8d1f\u8f7d\u914d\u7f6e\u5927\u9875\u5185\u5b58<\/li>\n
        \u8bbe\u7f6e\u8fdb\u7a0b\u4f18\u5148\u7ea7\u7ba1\u7406<\/li>\n
        \u5b9e\u65bd\u5185\u5b58\u538b\u7f29\u4ee5\u51cf\u5c11\u4ea4\u6362<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
        [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
        \u5b89\u5168\u63aa\u65bd\u548cDDoS\u9632\u62a4<\/strong><\/h2>\n
        \u5b9e\u65bd\u5168\u9762\u7684\u5b89\u5168\u63aa\u65bd\u5bf9\u4e8e\u9632\u6b62\u6076\u610f\u653b\u51fb\u5bfc\u81f4\u7684\u5b95\u673a\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n
        \n
        WAF\u914d\u7f6e\n
        \n
        \u5177\u6709\u673a\u5668\u5b66\u4e60\u68c0\u6d4b\u7684\u5e94\u7528\u7279\u5b9a\u5a01\u80c1\u81ea\u5b9a\u4e49\u89c4\u5219\u96c6<\/li>\n
        \u5b9e\u65bd\u5177\u6709\u81ea\u9002\u5e94\u9608\u503c\u7684\u901f\u7387\u9650\u5236<\/li>\n
        \u5177\u6709\u4fe1\u8a89\u8fc7\u6ee4\u7684\u57fa\u4e8e\u5730\u7406\u4f4d\u7f6e\u7684\u8bbf\u95ee\u63a7\u5236<\/li>\n
        \u9ad8\u7ea7\u673a\u5668\u4eba\u68c0\u6d4b\u673a\u5236<\/li>\n
        \u5177\u6709\u5b8c\u7f8e\u524d\u5411\u4fdd\u5bc6\u7684SSL\/TLS\u4f18\u5316<\/li>\n
        \u81ea\u5b9a\u4e49\u9519\u8bef\u9875\u9762\u914d\u7f6e<\/li>\n
        \u5b9e\u65f6\u5a01\u80c1\u60c5\u62a5\u96c6\u6210<\/li>\n<\/ul>\n<\/li>\n
        DDoS\u7f13\u89e3\n
        \n
        \u5177\u6709\u884c\u4e3a\u5206\u6790\u7684\u7b2c7\u5c42\u653b\u51fb\u9632\u62a4<\/li>\n
        \u4f7f\u7528\u81ea\u9002\u5e94\u9608\u503c\u7684TCP\/UDP\u6cdb\u6d2a\u9632\u5fa1<\/li>\n
        \u5177\u6709\u673a\u5668\u5b66\u4e60\u6a21\u578b\u7684\u6d41\u91cf\u6a21\u5f0f\u5206\u6790<\/li>\n
        \u901a\u8fc7\u6e05\u6d17\u4e2d\u5fc3\u8fdb\u884c\u5bb9\u91cf\u653b\u51fb\u7f13\u89e3<\/li>\n
        \u534f\u8bae\u9a8c\u8bc1\u548c\u51c0\u5316<\/li>\n
        \u6e90IP\u4fe1\u8a89\u68c0\u67e5<\/li>\n
        \u5b9e\u65bd\u53cd\u6b3a\u9a97\u63aa\u65bd<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
        [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
        \u76d1\u63a7\u548c\u544a\u8b66\u7cfb\u7edf<\/strong><\/h2>\n
        \u5b9e\u65bd\u590d\u6742\u7684\u76d1\u63a7\u89e3\u51b3\u65b9\u6848\u5bf9\u4e8e\u4e3b\u52a8\u670d\u52a1\u5668\u7ba1\u7406\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n
        \n
        \u7cfb\u7edf\u6307\u6807\u76d1\u63a7\n
        # \u589e\u5f3a\u578bPrometheus\u914d\u7f6e\r\nglobal:\r\n  scrape_interval: 15s\r\n  evaluation_interval: 15s\r\n  external_labels:\r\n    monitor: 'production'\r\n\r\nrule_files:\r\n  - \"alert.rules\"\r\n  - \"recording.rules\"\r\n\r\nscrape_configs:\r\n  - job_name: 'server_metrics'\r\n    static_configs:\r\n      - targets: ['localhost:9100']\r\n    metric_relabel_configs:\r\n      - source_labels: [__name__]\r\n        regex: 'go_.*'\r\n        action: drop\r\n\r\nalerting:\r\n  alertmanagers:\r\n    - static_configs:\r\n        - targets: ['localhost:9093']<\/code><\/pre>\n<\/li>\n
        \u544a\u8b66\u9608\u503c\uff1a\n
        \n
        CPU\u4f7f\u7528\u7387 > 85%\u6301\u7eed5\u5206\u949f\uff0c\u5305\u542b\u8d8b\u52bf\u5206\u6790<\/li>\n
        \u5185\u5b58\u4f7f\u7528\u7387 > 90%\u6301\u7eed3\u5206\u949f\uff0c\u5305\u542b\u589e\u957f\u9884\u6d4b<\/li>\n
        \u78c1\u76d8I\/O\u5ef6\u8fdf > 100ms\u6301\u7eed2\u5206\u949f\uff0c\u5305\u542b\u961f\u5217\u6df1\u5ea6\u5206\u6790<\/li>\n
        \u7f51\u7edc\u4e22\u5305\u7387 > 1%\u6301\u7eed1\u5206\u949f\uff0c\u5305\u542b\u8def\u5f84\u8ffd\u8e2a<\/li>\n
        \u670d\u52a1\u54cd\u5e94\u65f6\u95f4 > 500ms\u6301\u7eed2\u5206\u949f<\/li>\n
        \u9519\u8bef\u7387 > \u6bcf\u5206\u949f\u8bf7\u6c42\u76841%<\/li>\n
        SSL\u8bc1\u4e66\u5c06\u572830\u5929\u5185\u8fc7\u671f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
        [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
        \u5907\u4efd\u548c\u707e\u96be\u6062\u590d<\/strong><\/h2>\n
        \u5b9e\u65bd\u5065\u58ee\u7684\u5907\u4efd\u7b56\u7565\u5bf9\u4e8e\u7ef4\u6301\u4e1a\u52a1\u8fde\u7eed\u6027\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n
        \n
        \u81ea\u52a8\u5316\u5907\u4efd\u89e3\u51b3\u65b9\u6848\n
        \n
        \u6bcf6\u5c0f\u65f6\u8fdb\u884c\u589e\u91cf\u5907\u4efd\uff0c\u5177\u6709\u53d8\u66f4\u5757\u8ddf\u8e2a<\/li>\n
        \u6bcf\u65e5\u8fdb\u884c\u5b8c\u6574\u7cfb\u7edf\u5feb\u7167\uff0c\u5305\u542b\u5b8c\u6574\u6027\u9a8c\u8bc1<\/li>\n
        \u4f7f\u7528256\u4f4dAES\u52a0\u5bc6\u7684\u5f02\u5730\u590d\u5236<\/li>\n
        \u65f6\u95f4\u70b9\u6062\u590d\u529f\u80fd<\/li>\n
        \u81ea\u52a8\u5907\u4efd\u6d4b\u8bd5\u548c\u9a8c\u8bc1<\/li>\n
        \u5907\u4efd\u4fdd\u7559\u7b56\u7565\u6267\u884c<\/li>\n
        \u5173\u952e\u7cfb\u7edf\u7684\u6301\u7eed\u6570\u636e\u4fdd\u62a4<\/li>\n<\/ul>\n<\/li>\n
        \u6545\u969c\u8f6c\u79fb\u914d\u7f6e\n
        \n
        \u5177\u6709\u81ea\u52a8\u540c\u6b65\u7684\u4e3b\u52a8-\u4e3b\u52a8\u96c6\u7fa4\u8bbe\u7f6e<\/li>\n
        \u5177\u6709\u81ea\u5b9a\u4e49\u534f\u8bae\u7684\u8d1f\u8f7d\u5747\u8861\u5668\u5065\u5eb7\u68c0\u67e5<\/li>\n
        \u5177\u6709\u53ef\u914d\u7f6e\u9608\u503c\u7684\u81ea\u52a8\u6545\u969c\u8f6c\u79fb\u89e6\u53d1\u5668<\/li>\n
        \u8de8\u533a\u57df\u6545\u969c\u8f6c\u79fb\u80fd\u529b<\/li>\n
        \u6570\u636e\u5e93\u590d\u5236\u76d1\u63a7<\/li>\n
        \u5e94\u7528\u7a0b\u5e8f\u72b6\u6001\u4e00\u81f4\u6027\u68c0\u67e5<\/li>\n
        \u81ea\u52a8\u6545\u969c\u6062\u590d\u7a0b\u5e8f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
        [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
        \u9009\u62e9\u5408\u9002\u7684\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u63d0\u4f9b\u5546<\/strong><\/h2>\n
        \u5728\u9009\u62e9\u670d\u52a1\u5668\u79df\u7528\u63d0\u4f9b\u5546\u65f6\uff0c\u8bf7\u8003\u8651\u4ee5\u4e0b\u6280\u672f\u6807\u51c6\uff1a<\/p>\n
        \n
        \u57fa\u7840\u8bbe\u65bd\u8981\u6c42\n
        \n
        \u5177\u6709\u5e74\u5ea6\u5ba1\u8ba1\u7684\u56db\u7ea7\u6570\u636e\u4e2d\u5fc3\u8ba4\u8bc1<\/li>\n
        \u5177\u6709N+2\u5197\u4f59\u7684\u591a\u7535\u7f51\u8fde\u63a5<\/li>\n
        \u5177\u6709\u81ea\u7136\u51b7\u5374\u80fd\u529b\u7684\u5197\u4f59\u51b7\u5374\u7cfb\u7edf<\/li>\n
        \u5177\u6709\u591a\u4e2a\u8fd0\u8425\u5546\u7684\u591a\u4e2a\u7f51\u7edc\u4e0a\u884c\u94fe\u8def<\/li>\n
        \u5177\u6709\u751f\u7269\u8bc6\u522b\u8bbf\u95ee\u7684\u7269\u7406\u5b89\u5168\u63aa\u65bd<\/li>\n
        \u73af\u5883\u76d1\u63a7\u7cfb\u7edf<\/li>\n
        \u53ef\u6301\u7eed\u7684\u80fd\u6e90\u4f7f\u7528\u6548\u7387(PUE)<\/li>\n<\/ul>\n<\/li>\n
        \u670d\u52a1\u7b49\u7ea7\u534f\u8bae\n
        \n
        99.999%\u6b63\u5e38\u8fd0\u884c\u65f6\u95f4\u4fdd\u8bc1\uff0c\u5305\u542b\u8d22\u52a1\u8865\u507f<\/li>\n
        \u5173\u952e\u95ee\u9898< 15\u5206\u949f\u54cd\u5e94\u65f6\u95f4\uff0c\u5305\u542b\u5347\u7ea7\u8def\u5f84<\/li>\n
        \u7f51\u7edc\u6027\u80fd\u4fdd\u8bc1\uff0c\u5305\u542b\u5ef6\u8fdfSLA<\/li>\n
        \u6708\u5ea6\u6027\u80fd\u62a5\u544a<\/li>\n
        \u900f\u660e\u7684\u4e8b\u4ef6\u6c9f\u901a<\/li>\n
        \u5b9a\u671f\u5408\u89c4\u5ba1\u8ba1<\/li>\n
        24\/7\u6280\u672f\u652f\u6301\u53ef\u7528\u6027<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
        [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
        \u6545\u969c\u6392\u9664\u6307\u5357<\/strong><\/h2>\n
        \u5f53\u670d\u52a1\u5668\u95ee\u9898\u53d1\u751f\u65f6\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u7cfb\u7edf\u5316\u8c03\u8bd5\u65b9\u6cd5\uff1a<\/p>\n
        \n
        \u521d\u59cb\u8bca\u65ad\n
        # \u589e\u5f3a\u578b\u7cfb\u7edf\u65e5\u5fd7\u5206\u6790\r\njournalctl -xe --priority=err\r\njournalctl -xe --since \"1 hour ago\"\r\n\r\n# \u8be6\u7ec6\u7f51\u7edc\u7edf\u8ba1\r\nnetstat -tupn | grep ESTABLISHED\r\nss -netp | grep LISTEN\r\n\r\n# \u5168\u9762\u7cfb\u7edf\u8d44\u6e90\u5206\u6790\r\ntop -b -n 1 -w 512\r\nvmstat 1 5\r\niostat -xz 1 5<\/code><\/pre>\n<\/li>\n
        \u7f51\u7edc\u8bca\u65ad\n
        # \u9ad8\u7ea7\u7f51\u7edc\u6545\u969c\u6392\u9664\r\nmtr -n --tcp --port 80 target_host\r\ndig +trace +dnssec domain.com\r\niftop -n -P\r\n\r\n# TCP\u8fde\u63a5\u5206\u6790\r\ntcpdump -i any -n port 80 or port 443\r\nnetstat -nat | awk '{print $6}' | sort | uniq -c<\/code><\/pre>\n<\/li>\n<\/ul>\n
        [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
        \u5e38\u89c1\u95ee\u9898\u89e3\u7b54\uff08FAQ\uff09<\/strong><\/h2>\n
        \n
        \u95ee\uff1a\u670d\u52a1\u5668\u5b95\u673a\u6700\u5e38\u89c1\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\u7b54\uff1a\u6839\u636e\u5bf9\u8d85\u8fc71,000\u4e2a\u4e8b\u4ef6\u7684\u5168\u9762\u7edf\u8ba1\u5206\u6790\uff0c\u7f51\u7edc\u76f8\u5173\u95ee\u9898\u5360\u6240\u6709\u5b95\u673a\u4e8b\u4ef6\u7684\u7ea645%\uff0c\u5176\u6b21\u662f\u914d\u7f6e\u9519\u8bef\uff0830%\uff09\u548c\u5b89\u5168\u6f0f\u6d1e\uff0825%\uff09\u3002\u5728\u7f51\u7edc\u95ee\u9898\u4e2d\uff0cBGP\u914d\u7f6e\u9519\u8bef\u548cDNS\u95ee\u9898\u662f\u6700\u5e38\u89c1\u7684\u5bfc\u81f4\u56e0\u7d20\u3002<\/li>\n
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