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

\u7db2\u8def\u512a\u5316\u89e3\u6c7a\u65b9\u6848<\/strong><\/h2>\n

\u5be6\u65bd\u5f37\u5927\u7684\u7db2\u8def\u512a\u5316\u7b56\u7565\u662f\u7dad\u6301\u4f3a\u670d\u5668\u7a69\u5b9a\u6027\u7684\u57fa\u790e\u3002\u4ee5\u4e0b\u662f\u7d50\u5408\u6700\u65b0\u7522\u696d\u6700\u4f73\u5be6\u52d9\u7684\u6280\u8853\u7d30\u7bc0\u5206\u6790\uff1a<\/p>\n

\n
• \u9032\u968eDNS\u914d\u7f6e\n
  \n
  • \u5be6\u65bd\u5177\u6709\u5168\u7403\u8ca0\u8f09\u5e73\u8861\u7684\u4efb\u64adDNS\u67b6\u69cb<\/li>\n
  • \u914d\u7f6eDNS\u8f2a\u8a62\uff0c\u6bcf30\u79d2\u9032\u884c\u4e00\u6b21\u6d3b\u6027\u6aa2\u67e5<\/li>\n
  • \u90e8\u7f72\u4f7f\u75282048\u4f4d\u5143RSA\u91d1\u9470\u7684DNSSEC\u4ee5\u589e\u5f37\u5b89\u5168\u6027<\/li>\n
  • \u5be6\u65bd\u57fa\u65bcDNS\u7684\u5bb9\u932f\u79fb\u8f49\u6a5f\u5236<\/li>\n
  • \u914d\u7f6e\u8ca0TTL\u5feb\u53d6\u512a\u5316<\/li>\n
  • \u8a2d\u7f6eDNS\u67e5\u8a62\u65e5\u8a8c\u4ee5\u9032\u884c\u6545\u969c\u6392\u9664<\/li>\n
  • \u5be6\u65bd\u5206\u96e2\u8996\u5716DNS\u7528\u65bc\u5167\u90e8\/\u5916\u90e8\u89e3\u6790<\/li>\n<\/ul>\n<\/li>\n
  • CDN\u5be6\u65bd\n
    \n
    • \u4f7f\u7528Lambda@Edge\u51fd\u6578\u8a2d\u7f6e\u908a\u7de3\u904b\u7b97\u80fd\u529b<\/li>\n
    • \u914d\u7f6e\u5177\u6709\u5feb\u53d6\u4e00\u81f4\u6027\u5354\u5b9a\u7684\u52d5\u614b\u5167\u5bb9\u5feb\u53d6<\/li>\n
    • \u5be6\u65bd\u591a\u5c64\u6e90\u7ad9\u4fdd\u8b77<\/li>\n
    • \u555f\u7528\u667a\u6167\u6e05\u9664\u6a5f\u5236\u7528\u65bc\u5167\u5bb9\u66f4\u65b0<\/li>\n
    • \u914d\u7f6eCDN\u6548\u80fd\u7684\u5373\u6642\u5206\u6790<\/li>\n
    • \u5be6\u65bd\u591aCDN\u5bb9\u932f\u79fb\u8f49\u7b56\u7565<\/li>\n
    • \u914d\u7f6e\u5730\u7406\u8def\u7531\u512a\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

      \u4f3a\u670d\u5668\u914d\u7f6e\u512a\u5316<\/strong><\/h2>\n

      \u9069\u7576\u7684\u4f3a\u670d\u5668\u914d\u7f6e\u5c0d\u65bc\u7dad\u6301\u6700\u4f73\u6548\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u8003\u616e\u4ee5\u4e0b\u9032\u968e\u6280\u8853\u8abf\u6574\uff1a<\/p>\n

      \n
      • \u6838\u5fc3\u53c3\u6578\u8abf\u512a\uff1a\n

        # \u7db2\u8def\u512a\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# \u8a18\u61b6\u9ad4\u7ba1\u7406\r\nvm.swappiness = 10\r\nvm.dirty_ratio = 60\r\nvm.dirty_background_ratio = 2<\/code><\/pre>\n<\/li>\n
        \u8cc7\u6e90\u5206\u914d\uff1a\n
        \n
        \u91dd\u5c0d\u95dc\u9375\u7a0b\u5e8f\u5be6\u65bd\u5177\u6709NUMA\u611f\u77e5\u7684CPU\u7d81\u5b9a<\/li>\n
        \u914d\u7f6e\u5177\u6709\u4ea4\u932f\u7684NUMA\u611f\u77e5\u8a18\u61b6\u9ad4\u5206\u914d<\/li>\n
        \u91dd\u5c0d\u4e0d\u540c\u5de5\u4f5c\u8ca0\u8f09\u985e\u578b\u512a\u5316I\/O\u6392\u7a0b\u5668\u8a2d\u5b9a<\/li>\n
        \u5be6\u65bd\u8cc7\u6e90\u9694\u96e2\u7684cgroup\u7d04\u675f<\/li>\n
        \u70ba\u8cc7\u6599\u5eab\u5de5\u4f5c\u8ca0\u8f09\u914d\u7f6e\u5927\u9801\u8a18\u61b6\u9ad4<\/li>\n
        \u8a2d\u7f6e\u7a0b\u5e8f\u512a\u5148\u7d1a\u7ba1\u7406<\/li>\n
        \u5be6\u65bd\u8a18\u61b6\u9ad4\u58d3\u7e2e\u4ee5\u6e1b\u5c11\u4ea4\u63db<\/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\u8b77<\/strong><\/h2>\n
        \u5be6\u65bd\u5168\u9762\u7684\u5b89\u5168\u63aa\u65bd\u5c0d\u65bc\u9632\u6b62\u60e1\u610f\u653b\u64ca\u5c0e\u81f4\u7684\u7576\u6a5f\u81f3\u95dc\u91cd\u8981\uff1a<\/p>\n
        \n
        WAF\u914d\u7f6e\n
        \n
        \u5177\u6709\u6a5f\u5668\u5b78\u7fd2\u5075\u6e2c\u7684\u61c9\u7528\u7a0b\u5f0f\u7279\u5b9a\u5a01\u8105\u81ea\u8a02\u898f\u5247\u96c6<\/li>\n
        \u5be6\u65bd\u5177\u6709\u81ea\u9069\u61c9\u95be\u503c\u7684\u901f\u7387\u9650\u5236<\/li>\n
        \u5177\u6709\u4fe1\u8b7d\u904e\u6ffe\u7684\u57fa\u65bc\u5730\u7406\u4f4d\u7f6e\u7684\u5b58\u53d6\u63a7\u5236<\/li>\n
        \u9032\u968e\u6a5f\u5668\u4eba\u5075\u6e2c\u6a5f\u5236<\/li>\n
        \u5177\u6709\u5b8c\u7f8e\u524d\u5411\u4fdd\u5bc6\u7684SSL\/TLS\u512a\u5316<\/li>\n
        \u81ea\u8a02\u932f\u8aa4\u9801\u9762\u914d\u7f6e<\/li>\n
        \u5373\u6642\u5a01\u8105\u60c5\u5831\u6574\u5408<\/li>\n<\/ul>\n<\/li>\n
        DDoS\u7de9\u89e3\n
        \n
        \u5177\u6709\u884c\u70ba\u5206\u6790\u7684\u7b2c7\u5c64\u653b\u64ca\u9632\u8b77<\/li>\n
        \u4f7f\u7528\u81ea\u9069\u61c9\u95be\u503c\u7684TCP\/UDP\u6cdb\u6d2a\u9632\u79a6<\/li>\n
        \u5177\u6709\u6a5f\u5668\u5b78\u7fd2\u6a21\u578b\u7684\u6d41\u91cf\u6a21\u5f0f\u5206\u6790<\/li>\n
        \u900f\u904e\u6e05\u6d17\u4e2d\u5fc3\u9032\u884c\u5bb9\u91cf\u653b\u64ca\u7de9\u89e3<\/li>\n
        \u5354\u5b9a\u9a57\u8b49\u548c\u6de8\u5316<\/li>\n
        \u4f86\u6e90IP\u4fe1\u8b7d\u6aa2\u67e5<\/li>\n
        \u5be6\u65bd\u53cd\u6b3a\u9a19\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
        \u76e3\u63a7\u548c\u8b66\u5831\u7cfb\u7d71<\/strong><\/h2>\n
        \u5be6\u65bd\u8907\u96dc\u7684\u76e3\u63a7\u89e3\u6c7a\u65b9\u6848\u5c0d\u65bc\u4e3b\u52d5\u4f3a\u670d\u5668\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\uff1a<\/p>\n
        \n
        \u7cfb\u7d71\u6307\u6a19\u76e3\u63a7\n
        # \u589e\u5f37\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
        \u8b66\u5831\u95be\u503c\uff1a\n
        \n
        CPU\u4f7f\u7528\u7387 > 85%\u6301\u7e8c5\u5206\u9418\uff0c\u5305\u542b\u8da8\u52e2\u5206\u6790<\/li>\n
        \u8a18\u61b6\u9ad4\u4f7f\u7528\u7387 > 90%\u6301\u7e8c3\u5206\u9418\uff0c\u5305\u542b\u6210\u9577\u9810\u6e2c<\/li>\n
        \u78c1\u789fI\/O\u5ef6\u9072 > 100ms\u6301\u7e8c2\u5206\u9418\uff0c\u5305\u542b\u4f47\u5217\u6df1\u5ea6\u5206\u6790<\/li>\n
        \u7db2\u8def\u4e1f\u5305\u7387 > 1%\u6301\u7e8c1\u5206\u9418\uff0c\u5305\u542b\u8def\u5f91\u8ffd\u8e64<\/li>\n
        \u670d\u52d9\u56de\u61c9\u6642\u9593 > 500ms\u6301\u7e8c2\u5206\u9418<\/li>\n
        \u932f\u8aa4\u7387 > \u6bcf\u5206\u9418\u8acb\u6c42\u76841%<\/li>\n
        SSL\u6191\u8b49\u5c07\u572830\u5929\u5167\u904e\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
        \u5099\u4efd\u548c\u707d\u96e3\u5fa9\u539f<\/strong><\/h2>\n
        \u5be6\u65bd\u5065\u5168\u7684\u5099\u4efd\u7b56\u7565\u5c0d\u65bc\u7dad\u6301\u696d\u52d9\u9023\u7e8c\u6027\u81f3\u95dc\u91cd\u8981\uff1a<\/p>\n
        \n
        \u81ea\u52d5\u5316\u5099\u4efd\u89e3\u6c7a\u65b9\u6848\n
        \n
        \u6bcf6\u5c0f\u6642\u9032\u884c\u589e\u91cf\u5099\u4efd\uff0c\u5177\u6709\u8b8a\u66f4\u5340\u584a\u8ffd\u8e64<\/li>\n
        \u6bcf\u65e5\u9032\u884c\u5b8c\u6574\u7cfb\u7d71\u5feb\u7167\uff0c\u5305\u542b\u5b8c\u6574\u6027\u9a57\u8b49<\/li>\n
        \u4f7f\u7528256\u4f4d\u5143AES\u52a0\u5bc6\u7684\u7570\u5730\u8907\u88fd<\/li>\n
        \u6642\u9593\u9ede\u5fa9\u539f\u529f\u80fd<\/li>\n
        \u81ea\u52d5\u5099\u4efd\u6e2c\u8a66\u548c\u9a57\u8b49<\/li>\n
        \u5099\u4efd\u4fdd\u7559\u7b56\u7565\u57f7\u884c<\/li>\n
        \u95dc\u9375\u7cfb\u7d71\u7684\u6301\u7e8c\u8cc7\u6599\u4fdd\u8b77<\/li>\n<\/ul>\n<\/li>\n
        \u5bb9\u932f\u79fb\u8f49\u914d\u7f6e\n
        \n
        \u5177\u6709\u81ea\u52d5\u540c\u6b65\u7684\u4e3b\u52d5-\u4e3b\u52d5\u53e2\u96c6\u8a2d\u7f6e<\/li>\n
        \u5177\u6709\u81ea\u8a02\u5354\u5b9a\u7684\u8ca0\u8f09\u5e73\u8861\u5668\u5065\u5eb7\u6aa2\u67e5<\/li>\n
        \u5177\u6709\u53ef\u914d\u7f6e\u95be\u503c\u7684\u81ea\u52d5\u5bb9\u932f\u79fb\u8f49\u89f8\u767c\u5668<\/li>\n
        \u8de8\u5340\u57df\u5bb9\u932f\u79fb\u8f49\u80fd\u529b<\/li>\n
        \u8cc7\u6599\u5eab\u8907\u88fd\u76e3\u63a7<\/li>\n
        \u61c9\u7528\u7a0b\u5f0f\u72c0\u614b\u4e00\u81f4\u6027\u6aa2\u67e5<\/li>\n
        \u81ea\u52d5\u6545\u969c\u5fa9\u539f\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
        \u9078\u64c7\u5408\u9069\u7684\u7f8e\u570b\u4f3a\u670d\u5668\u79df\u7528\u63d0\u4f9b\u5546<\/strong><\/h2>\n
        \u5728\u9078\u64c7\u4f3a\u670d\u5668\u79df\u7528\u63d0\u4f9b\u5546\u6642\uff0c\u8acb\u8003\u616e\u4ee5\u4e0b\u6280\u8853\u6a19\u6e96\uff1a<\/p>\n
        \n
        \u57fa\u790e\u8a2d\u65bd\u8981\u6c42\n
        \n
        \u5177\u6709\u5e74\u5ea6\u7a3d\u6838\u7684\u56db\u7d1a\u8cc7\u6599\u4e2d\u5fc3\u8a8d\u8b49<\/li>\n
        \u5177\u6709N+2\u5197\u9918\u7684\u591a\u96fb\u7db2\u9023\u63a5<\/li>\n
        \u5177\u6709\u81ea\u7136\u51b7\u537b\u80fd\u529b\u7684\u5197\u9918\u51b7\u537b\u7cfb\u7d71<\/li>\n
        \u5177\u6709\u591a\u500b\u71df\u904b\u5546\u7684\u591a\u500b\u7db2\u8def\u4e0a\u884c\u9023\u7d50<\/li>\n
        \u5177\u6709\u751f\u7269\u8b58\u5225\u5b58\u53d6\u7684\u5be6\u9ad4\u5b89\u5168\u63aa\u65bd<\/li>\n
        \u74b0\u5883\u76e3\u63a7\u7cfb\u7d71<\/li>\n
        \u53ef\u6301\u7e8c\u7684\u80fd\u6e90\u4f7f\u7528\u6548\u7387(PUE)<\/li>\n<\/ul>\n<\/li>\n
        \u670d\u52d9\u7b49\u7d1a\u5354\u8b70\n
        \n
        99.999%\u6b63\u5e38\u904b\u884c\u6642\u9593\u4fdd\u8b49\uff0c\u5305\u542b\u8ca1\u52d9\u88dc\u511f<\/li>\n
        \u95dc\u9375\u554f\u984c< 15\u5206\u9418\u56de\u61c9\u6642\u9593\uff0c\u5305\u542b\u5347\u7d1a\u8def\u5f91<\/li>\n
        \u7db2\u8def\u6548\u80fd\u4fdd\u8b49\uff0c\u5305\u542b\u5ef6\u9072SLA<\/li>\n
        \u6708\u5ea6\u6548\u80fd\u5831\u544a<\/li>\n
        \u900f\u660e\u7684\u4e8b\u4ef6\u6e9d\u901a<\/li>\n
        \u5b9a\u671f\u5408\u898f\u7a3d\u6838<\/li>\n
        24\/7\u6280\u8853\u652f\u63f4\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
        \u7576\u4f3a\u670d\u5668\u554f\u984c\u767c\u751f\u6642\uff0c\u8acb\u9075\u5faa\u4ee5\u4e0b\u7cfb\u7d71\u5316\u9664\u932f\u65b9\u6cd5\uff1a<\/p>\n
        \n
        \u521d\u59cb\u8a3a\u65b7\n
        # \u589e\u5f37\u578b\u7cfb\u7d71\u65e5\u8a8c\u5206\u6790\r\njournalctl -xe --priority=err\r\njournalctl -xe --since \"1 hour ago\"\r\n\r\n# \u8a73\u7d30\u7db2\u8def\u7d71\u8a08\r\nnetstat -tupn | grep ESTABLISHED\r\nss -netp | grep LISTEN\r\n\r\n# \u5168\u9762\u7cfb\u7d71\u8cc7\u6e90\u5206\u6790\r\ntop -b -n 1 -w 512\r\nvmstat 1 5\r\niostat -xz 1 5<\/code><\/pre>\n<\/li>\n
        \u7db2\u8def\u8a3a\u65b7\n
        # \u9032\u968e\u7db2\u8def\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\u9023\u7dda\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\u898b\u554f\u984c\u89e3\u7b54\uff08FAQ\uff09<\/strong><\/h2>\n
        \n
        \u554f\uff1a\u4f3a\u670d\u5668\u7576\u6a5f\u6700\u5e38\u898b\u7684\u539f\u56e0\u662f\u4ec0\u9ebc\uff1f\u7b54\uff1a\u6839\u64da\u5c0d\u8d85\u904e1,000\u500b\u4e8b\u4ef6\u7684\u5168\u9762\u7d71\u8a08\u5206\u6790\uff0c\u7db2\u8def\u76f8\u95dc\u554f\u984c\u4f54\u6240\u6709\u7576\u6a5f\u4e8b\u4ef6\u7684\u7d0445%\uff0c\u5176\u6b21\u662f\u914d\u7f6e\u932f\u8aa4\uff0830%\uff09\u548c\u5b89\u5168\u6f0f\u6d1e\uff0825%\uff09\u3002\u5728\u7db2\u8def\u554f\u984c\u4e2d\uff0cBGP\u914d\u7f6e\u932f\u8aa4\u548cDNS\u554f\u984c\u662f\u6700\u5e38\u898b\u7684\u5c0e\u81f4\u56e0\u7d20\u3002<\/li>\n
        \u554f\uff1a\u6211\u61c9\u8a72\u591a\u5feb\u56de\u61c9\u7576\u6a5f\u4e8b\u4ef6\uff1f\u7b54\uff1a\u6839\u64da\u670d\u52d9\u91cd\u8981\u6027\u5be6\u65bd\u5206\u7d1a\u56de\u61c9\u7cfb\u7d71\uff1a
        \n– \u95dc\u9375\u670d\u52d9\uff1a5\u5206\u9418\u56de\u61c9\u6642\u9593\uff0c\u81ea\u52d5\u5347\u7d1a
        \n– \u6838\u5fc3\u670d\u52d9\uff1a15\u5206\u9418\u56de\u61c9\u6642\u9593\uff0c\u5718\u968a\u901a\u77e5
        \n– \u975e\u95dc\u9375\u670d\u52d9\uff1a30\u5206\u9418\u56de\u61c9\u6642\u9593\uff0c\u6a19\u6e96\u5354\u5b9a
        \n\u6bcf\u500b\u7d1a\u5225\u90fd\u61c9\u8a72\u6709\u8a18\u9304\u5728\u6848\u7684\u7a0b\u5e8f\u548c\u6307\u5b9a\u7684\u56de\u61c9\u5718\u968a\u3002<\/li>\n<\/ul>\n
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