{"id":34633,"date":"2026-09-14T15:25:37","date_gmt":"2026-09-14T07:25:37","guid":{"rendered":"https:\/\/www.simcentric.com\/uncategorized-sc\/how-to-configure-automatic-dns-resolution-switching\/"},"modified":"2026-09-14T15:31:15","modified_gmt":"2026-09-14T07:31:15","slug":"how-to-configure-automatic-dns-resolution-switching","status":"publish","type":"post","link":"https:\/\/www.simcentric.com\/sc\/hong-kong-dedicated-server-sc\/how-to-configure-automatic-dns-resolution-switching\/","title":{"rendered":"\u5982\u4f55\u914d\u7f6e\u81ea\u52a8 DNS \u89e3\u6790\u5207\u6362"},"content":{"rendered":"

\u81ea\u52a8\u89e3\u6790\u5207\u6362\u89e3\u51b3\u4e86\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u57fa\u4e8e DNS \u7684\u6545\u969c\u8f6c\u79fb<\/a>\u548c\u5065\u5eb7\u68c0\u67e5\u6765\u914d\u7f6e\u81ea\u52a8 DNS \u89e3\u6790\u5207\u6362\u3002\u8fd9\u79cd\u65b9\u6cd5\u80fd\u591f\u51cf\u5c11\u505c\u673a\u65f6\u95f4\u548c\u4eba\u5de5\u5e72\u9884\uff0c\u540c\u65f6\u589e\u5f3a\u670d\u52a1\u5668\u96c6\u7fa4<\/a>\u7684\u9ad8\u53ef\u7528\u6027\u3002<\/p>\n

\u4f60\u5c06\u5b66\u4e60\u5982\u4f55\u5b8c\u6210\u524d\u7f6e\u51c6\u5907\u3001\u9009\u62e9\u81ea\u5efa\u6216\u4e91\u7aef\u65b9\u6848\u3001\u5b9a\u4e49\u5065\u5eb7\u68c0\u67e5\u63a2\u9488\uff0c\u7136\u540e\u63a7\u5236\u8bb0\u5f55\u66f4\u65b0\u3002\u4f60\u8fd8\u5c06\u6d4b\u8bd5\u6545\u969c\u8f6c\u79fb\u884c\u4e3a\uff0c\u5e76\u9a8c\u8bc1\u5728\u7f51\u7edc\u4e8b\u4ef6\u53d1\u751f\u540e\uff0c\u6d41\u91cf\u662f\u5426\u4f1a\u5230\u8fbe\u6b63\u786e\u7684\u670d\u52a1\u5668\u3002\u6bcf\u4e00\u6b65\u90fd\u5efa\u7acb\u5728\u524d\u4e00\u6b65\u4e4b\u4e0a\uff0c\u56e0\u6b64\u4f60\u53ef\u4ee5\u4ece\u51c6\u5907\u5230\u9a8c\u8bc1\uff0c\u638c\u63e1\u4e00\u5957\u5b8c\u6574\u7684\u5de5\u4f5c\u6d41\u7a0b\u3002\u672c\u6307\u5357\u5c06\u63d0\u4f9b\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u7684\u5b9e\u64cd\u6b65\u9aa4\u3002<\/p>\n

DNS \u6545\u969c\u8f6c\u79fb\u7684\u524d\u7f6e\u6761\u4ef6<\/strong><\/h2>\n

\u51c6\u5907\u670d\u52a1\u5668\u548c DNS \u8bbf\u95ee\u6743\u9650<\/h3>\n

\u4f60\u9700\u8981\u4e00\u4e2a\u5df2\u6ce8\u518c\u57df\u540d\uff0c\u5e76\u7531\u652f\u6301\u81ea\u52a8\u5065\u5eb7\u68c0\u67e5\u548c API \u9a71\u52a8\u66f4\u65b0\u7684\u670d\u52a1\u5546\u8fdb\u884c\u7ba1\u7406\u3002\u5efa\u8bae\u81f3\u5c11\u89c4\u5212\u4e24\u53f0\u4f4d\u4e8e\u4e0d\u540c\u533a\u57df\u6216\u6570\u636e\u4e2d\u5fc3\u7684\u670d\u52a1\u5668\u3002\u4e00\u53f0\u4f5c\u4e3a\u4e3b\u670d\u52a1\u5668\uff0c\u53e6\u4e00\u53f0\u5728\u4e3b\u670d\u52a1\u5668\u51fa\u73b0\u95ee\u9898\u65f6\u63a5\u7ba1\u670d\u52a1\u3002\u4f60\u8fd8\u9700\u8981\u8bbf\u95ee\u670d\u52a1\u5546\u7684\u7ba1\u7406\u63a7\u5236\u53f0\u6216 API\uff0c\u5e76\u5bf9 A \u8bb0\u5f55\u3001CNAME \u8bb0\u5f55\u4ee5\u53ca TTL \u503c\u6709\u57fa\u672c\u4e86\u89e3\u3002<\/p>\n

\u5728\u6545\u969c\u8f6c\u79fb\u751f\u6548\u4e4b\u524d\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4fee\u6539\u67d0\u4e2a DNS \u670d\u52a1\u5668\u6761\u76ee\uff0c\u6216\u6838\u9a8c\u73b0\u6709\u8bb0\u5f55\u3002\u8bf7\u68c0\u67e5\u4f60\u7684\u8def\u7531\u5668\u7ba1\u7406\u754c\u9762\uff0c\u4f8b\u5982 192.168.1.1\uff0c\u5e76\u67e5\u770b Windows 11\u3001macOS \u548c Linux \u4e0a\u64cd\u4f5c\u7cfb\u7edf\u7ea7\u522b\u7684 DNS \u8bbe\u7f6e\u3002\u5728 Windows 11 \u4e2d\uff0cDnscache\\Parameters<\/code> \u6ce8\u518c\u8868\u9879\u4e0b\u7684\u56db\u4e2a DWORD \u503c\u53ef\u4ee5\u6536\u7d27\u6545\u969c\u8f6c\u79fb\u884c\u4e3a\uff1a<\/p>\n

\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n
\u6ce8\u518c\u8868\u503c\uff08DWORD\uff09<\/th>\n\u6570\u503c<\/th>\n\u7528\u9014<\/th>\n<\/tr>\n
MaxCacheTtl<\/td>\n1<\/td>\n\u5c06 DNS \u7f13\u5b58 TTL \u8bbe\u7f6e\u4e3a 1 \u79d2<\/td>\n<\/tr>\n
MaxNegativeCacheTtl<\/td>\n0<\/td>\n\u963b\u6b62\u7f13\u5b58\u65e0\u6548\u6761\u76ee<\/td>\n<\/tr>\n
ServerPriorityTimeLimit<\/td>\n0<\/td>\n\u542f\u7528\u56de\u9000\u5230\u8f85\u52a9 DNS \u670d\u52a1\u5668<\/td>\n<\/tr>\n
ServiceDllUnloadOnStop<\/td>\n1<\/td>\n\u5728\u505c\u6b62\u65f6\u5378\u8f7d DNS Client \u670d\u52a1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u91cd\u542f\u540e\u8fd9\u4e9b\u66f4\u6539\u624d\u4f1a\u751f\u6548\u3002\u4e4b\u540e\uff0c\u5f53\u4e3b DNS \u670d\u52a1\u5668\u505c\u6b62\u54cd\u5e94\u65f6\uff0c\u8f85\u52a9 DNS \u670d\u52a1\u5668\u51e0\u4e4e\u53ef\u4ee5\u7acb\u5373\u63a5\u7ba1\u3002<\/p>\n

\u5b9a\u4e49\u5065\u5eb7\u68c0\u67e5\u7aef\u70b9<\/h3>\n

\u4e00\u4e2a\u53ef\u9760\u7684\u5065\u5eb7\u68c0\u67e5\u7aef\u70b9\u5e94\u9a8c\u8bc1\u771f\u5b9e\u7684\u5e94\u7528\u5065\u5eb7\u72b6\u51b5\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u8fd4\u56de\u4e00\u4e2a 200 \u72b6\u6001\u7801\u3002\u5b83\u5e94\u786e\u8ba4\u6570\u636e\u5e93\u8fde\u63a5\u3001\u7f13\u5b58\u53ef\u7528\u6027\u4ee5\u53ca\u5173\u952e\u4f9d\u8d56\u9879\u662f\u5426\u6b63\u5e38\u3002\u5bf9\u4e8e HTTP \u68c0\u67e5\uff0c\u8bf7\u8bf7\u6c42\u8bf8\u5982 \/health<\/code> \u7684\u7279\u5b9a\u8def\u5f84\uff0c\u671f\u671b\u8fd4\u56de 2xx \u6216 3xx \u72b6\u6001\u7801\uff0c\u5e76\u5c06\u8d85\u65f6\u65f6\u95f4\u8bbe\u7f6e\u4e3a 5\u201310 \u79d2\u3002\u5bf9\u4e8e HTTPS\uff0c\u8bf7\u9a8c\u8bc1 TLS \u63e1\u624b\uff0c\u5e76\u53ef\u9009\u62e9\u5f3a\u5236\u6821\u9a8c\u8bc1\u4e66\u6709\u6548\u6027\u3002\u5bf9\u4e8e TCP\uff0c\u8bf7\u786e\u8ba4\u7aef\u53e3\u80fd\u5728\u8d85\u65f6\u65f6\u95f4\u5185\u63a5\u53d7\u8fde\u63a5\u3002<\/p>\n

\u4f7f\u7528\u591a\u4e2a\u5065\u5eb7\u68c0\u67e5\u4f4d\u7f6e\u53ef\u4ee5\u907f\u514d\u56e0\u7f51\u7edc\u95ee\u9898\u5bfc\u81f4\u8bef\u5224\u3002\u8bf7\u5728\u6545\u969c\u8f6c\u79fb\u89e6\u53d1\u524d\u5c31\u76d1\u63a7\u72b6\u6001\u5e76\u5bf9\u6545\u969c\u53d1\u51fa\u544a\u8b66\u3002\u5b9a\u671f\u6d4b\u8bd5\u6545\u969c\u8f6c\u79fb\uff0c\u4f8b\u5982\u6bcf\u5b63\u5ea6\u8fdb\u884c\u4e00\u6b21\u6f14\u7ec3\uff0c\u5e76\u8bb0\u5f55\u4eba\u5de5\u5904\u7f6e\u6d41\u7a0b\u3002\u5982\u679c\u4f60\u8ba1\u5212\u7a0d\u540e\u66f4\u6539 DNS \u670d\u52a1\u5668\u8bbe\u7f6e\uff0c\u8bf7\u4fdd\u6301\u8fd9\u4e9b\u8bb0\u5f55\u4e3a\u6700\u65b0\uff0c\u4ee5\u786e\u4fdd\u4f60\u7684\u81ea\u5b9a\u4e49 DNS \u670d\u52a1\u5668\u548c DNS \u670d\u52a1\u5668\u5730\u5740\u5728\u6574\u4e2a\u7f51\u7edc\u4e2d\u59cb\u7ec8\u51c6\u786e\u3002<\/p>\n

\u5982\u4f55\u914d\u7f6e\u81ea\u52a8 DNS \u89e3\u6790\u5207\u6362<\/strong><\/h2>\n

\u81ea\u5efa DNS \u65b9\u6848<\/h3>\n

\u5f53\u4f60\u5728\u81ea\u5df1\u7684\u786c\u4ef6\u4e0a\u914d\u7f6e\u81ea\u52a8 DNS \u89e3\u6790\u5207\u6362\u65f6\uff0cBIND \u53ef\u4ee5\u63d0\u4f9b\u5b8c\u5168\u63a7\u5236\u3002\u9996\u5148\u4f7f\u7528 rndc-confgen -a -b 512 -r \/dev\/urandom<\/code> \u751f\u6210 rndc \u8eab\u4efd\u9a8c\u8bc1\u5bc6\u94a5\uff0c\u8be5\u547d\u4ee4\u4f1a\u5c06\u5bc6\u94a5\u5199\u5165 \/etc\/rndc.key<\/code>\u3002\u901a\u8fc7\u5c06\u8be5\u6587\u4ef6\u7684\u6240\u6709\u8005\u8bbe\u7f6e\u4e3a root:named<\/code>\u3001\u6743\u9650\u8bbe\u7f6e\u4e3a 0640<\/code> \u6765\u52a0\u56fa\u5b83\u3002\u5728\u4e3b\u914d\u7f6e\u6587\u4ef6 named.conf<\/code> \u4e2d\uff0c\u5305\u542b rndc \u5bc6\u94a5\u6587\u4ef6\uff0c\u5e76\u5b9a\u4e49\u4e00\u4e2a controls<\/code> \u5757\uff0c\u5141\u8bb8\u5728 127.0.0.1<\/code> \u7684 953<\/code> \u7aef\u53e3\u4e0a\u4f7f\u7528 rndc-key<\/code> \u8fdb\u884c rndc \u7ba1\u7406\u3002\u5b9a\u4e49\u4e3b\u533a\u57df\u65f6\uff0c\u4f7f\u7528 allow-update { key rndc-key; };<\/code> \u548c notify yes;<\/code>\uff0c\u4ee5\u4fbf\u52a8\u6001\u66f4\u65b0\u901a\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u3002\u5728\u4ece\u670d\u52a1\u5668\u4e0a\uff0c\u63a5\u53d7\u6765\u81ea\u4e3b\u670d\u52a1\u5668\u7684\u533a\u57df\u4f20\u9001\uff0c\u5e76\u4f7f\u7528\u76f8\u540c\u7684\u5bc6\u94a5\u5141\u8bb8\u66f4\u65b0\u3002\u7f16\u8f91\u52a8\u6001\u533a\u57df\u6587\u4ef6\u524d\uff0c\u5148\u6267\u884c rndc freeze <zone><\/code>\uff0c\u7136\u540e\u6267\u884c rndc reload <zone><\/code> \u548c rndc thaw <zone><\/code> \u4ee5\u91cd\u65b0\u542f\u7528\u66f4\u65b0\u3002\u4f7f\u7528 nsupdate -k \/etc\/rndc.key<\/code> \u53ef\u4ee5\u5728\u65e0\u9700\u91cd\u542f\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u5728\u7ebf\u4fee\u6539\uff0c\u5e76\u901a\u8fc7 named-checkconf<\/code>\u3001named-checkzone<\/code> \u548c rndc status<\/code> \u9a8c\u8bc1\u4e00\u5207\u662f\u5426\u6b63\u5e38\u3002<\/p>\n

\u201cHi Tarwan\uff0c\u4e5f\u8bb8 failover \u4e0d\u662f\u63cf\u8ff0\u5b83\u7684\u6700\u4f73\u8bcd\u6c47\u3002\u7528 master-slave replication \u53ef\u80fd\u66f4\u8d34\u5207\u3002\u4f60\u4ecd\u7136\u80fd\u4ece\u66f4\u9ad8\u7684\u53ef\u7528\u6027\u4e2d\u83b7\u76ca\uff0c\u56e0\u4e3a\u5982\u679c\u4f60\u7684 master \u5b95\u673a\uff0cslave \u62e5\u6709\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u4e14\u53ef\u4ee5\u7ee7\u7eed\u63d0\u4f9b\u670d\u52a1\u3002\u201d<\/p><\/blockquote>\n

\u5bf9\u4e8e\u66f4\u8f7b\u91cf\u7684\u90e8\u7f72\uff0cdnsmasq \u914d\u5408\u5065\u5eb7\u68c0\u67e5\u811a\u672c\u4e5f\u5f88\u9002\u5408\u3002\u4f60\u7684\u811a\u672c\u4f1a\u63a2\u6d4b\u4e3b\u670d\u52a1\u5668\uff0c\u7136\u540e\u5728\u63a2\u6d4b\u5931\u8d25\u65f6\u91cd\u5199 dnsmasq \u7684 hosts \u6761\u76ee\u5e76\u53d1\u9001 SIGHUP \u4fe1\u53f7\u3002\u8fd9\u6837\u53ef\u4ee5\u8ba9\u5207\u6362\u8fc7\u7a0b\u4fdd\u6301\u672c\u5730\u5316\u4e14\u8db3\u591f\u8fc5\u901f\u3002<\/p>\n

\u4e91\u7aef DNS \u6545\u969c\u8f6c\u79fb\u8def\u7531<\/h3>\n

AWS Route 53 \u4ee5\u4e0d\u540c\u65b9\u5f0f\u5904\u7406\u6545\u969c\u8f6c\u79fb\u3002\u5b83\u4e0d\u4f1a\u91cd\u5199\u5df2\u5b58\u50a8\u7684\u8bb0\u5f55\uff0c\u800c\u662f\u5728\u67e5\u8be2\u65f6\u505a\u51fa\u8def\u7531\u51b3\u7b56\u3002\u4f60\u53ef\u4ee5\u4e3a\u6bcf\u4e2a\u8d44\u6e90\u521b\u5efa\u5065\u5eb7\u68c0\u67e5\uff0c\u6216\u8005\u5bf9\u522b\u540d\u8bb0\u5f55\u5c06 Evaluate Target Health \u8bbe\u7f6e\u4e3a Yes\u3002\u7136\u540e\u521b\u5efa\u4e3b\u8bb0\u5f55\u548c\u5907\u7528\u8bb0\u5f55\uff0c\u5b83\u4eec\u9700\u8981\u5177\u6709\u76f8\u540c\u7684\u540d\u79f0\u3001\u7c7b\u578b\u548c\u8def\u7531\u7b56\u7565\uff0c\u5e76\u5206\u522b\u7ed1\u5b9a\u5230\u5404\u81ea\u7684\u5065\u5eb7\u68c0\u67e5\u3002\u5c06 Routing Policy \u8bbe\u7f6e\u4e3a Failover\uff0c\u5e76\u6307\u5b9a Primary \u548c Secondary \u8bb0\u5f55\u7c7b\u578b\u3002\u5f53\u5065\u5eb7\u68c0\u67e5\u62a5\u544a\u4e3b\u8d44\u6e90\u4e0d\u5065\u5eb7\u65f6\uff0cRoute 53 \u4f1a\u4f7f\u7528\u5065\u5eb7\u7684\u5907\u7528\u8bb0\u5f55\u6765\u54cd\u5e94\u67e5\u8be2\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7 CloudWatch \u6307\u6807\uff08\u5982 HealthCheckStatus \u548c HealthCheckPercentageHealthy\uff09\u4ee5\u53ca\u544a\u8b66\u3001Lambda \u68c0\u67e5\u548c EventBridge \u89c4\u5219\u6765\u76d1\u63a7\u8fd9\u4e00\u8fc7\u7a0b\u3002<\/p>\n

Azure \u5c06\u8fd9\u9879\u5de5\u4f5c\u62c6\u5206\u5f00\u6765\u3002Azure DNS \u672c\u8eab\u4e0d\u63d0\u4f9b\u5065\u5eb7\u68c0\u67e5\uff0c\u56e0\u6b64\u4f60\u9700\u8981\u518d\u914d\u5408 Traffic Manager \u4f5c\u4e3a\u7b2c\u4e8c\u9879\u670d\u52a1\u6765\u5b9e\u73b0\u6545\u969c\u8f6c\u79fb\u8def\u7531\u3002<\/p>\n

\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n
\u5bf9\u6bd4\u9879<\/th>\nAWS Route 53<\/th>\nAzure Traffic Manager<\/th>\n<\/tr>\n
\u670d\u52a1\u6a21\u578b<\/td>\n\u7edf\u4e00\u7684 DNS\u3001\u5065\u5eb7\u68c0\u67e5\u4e0e\u8def\u7531<\/td>\n\u72ec\u7acb\u7684\u8def\u7531\u670d\u52a1<\/td>\n<\/tr>\n
\u6545\u969c\u8f6c\u79fb\u8def\u7531<\/td>\n\u5185\u7f6e\u6545\u969c\u8f6c\u79fb\u7b56\u7565<\/td>\n\u4f18\u5148\u7ea7\u8def\u7531\u65b9\u5f0f<\/td>\n<\/tr>\n
DNS \u6258\u7ba1<\/td>\nRoute 53 \u662f\u6743\u5a01 DNS<\/td>\n\u9700\u8981 Azure DNS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u5982\u679c\u4f60\u5728\u5ba2\u6237\u7aef\u66f4\u6539\u67d0\u4e2a DNS \u670d\u52a1\u5668\u6761\u76ee\u6216\u66f4\u6539 DNS \u670d\u52a1\u5668\u8bbe\u7f6e\uff0c\u89e3\u6790\u4f18\u5148\u7ea7\u8fd8\u53d6\u51b3\u4e8e\u63a5\u53e3\u5ea6\u91cf\u503c\u4ee5\u53ca DNS \u670d\u52a1\u5668\u987a\u5e8f\u3002\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u66f4\u6539 DNS \u670d\u52a1\u5668\u4e4b\u524d\uff0c\u8bf7\u5148\u89c4\u5212\u597d\u8fd9\u4e9b\u56e0\u7d20\uff0c\u5e76\u8bb0\u5f55\u6574\u4e2a\u7f51\u7edc\u4e2d\u6bcf\u4e00\u9879\u4e0e\u66f4\u6539 DNS \u670d\u52a1\u5668\u76f8\u5173\u7684\u53d8\u66f4\u3002<\/p>\n

\u5065\u5eb7\u68c0\u67e5\u4e0e\u5207\u6362\u903b\u8f91<\/strong><\/h2>\n

\u9009\u62e9 DNS \u5065\u5eb7\u68c0\u67e5\u63a2\u9488<\/h3>\n

\u4f60\u9009\u62e9\u7684\u63a2\u9488\u7c7b\u578b\u51b3\u5b9a\u4e86\u5065\u5eb7\u68c0\u67e5\u5b9e\u9645\u80fd\u53d1\u73b0\u4ec0\u4e48\u95ee\u9898\u3002Ping\uff08ICMP\uff09\u53ef\u4ee5\u786e\u8ba4\u4e3b\u673a\u7684\u57fa\u672c\u53ef\u8fbe\u6027\uff0c\u4f46\u9632\u706b\u5899\u7ecf\u5e38\u4f1a\u963b\u6b62\u5b83\uff0c\u800c\u4e14\u5b83\u65e0\u6cd5\u8bc1\u660e\u5e94\u7528\u672c\u8eab\u6b63\u5e38\u8fd0\u884c\u3002\u7aef\u53e3\uff08TCP\uff09\u68c0\u67e5\u53ef\u4ee5\u786e\u8ba4\u67d0\u4e2a\u670d\u52a1\u7aef\u53e3\u662f\u5426\u63a5\u53d7\u8fde\u63a5\uff0c\u4f46\u5b83\u65e0\u6cd5\u5224\u65ad\u5e94\u7528\u903b\u8f91\u662f\u5426\u6b63\u5e38\u3002HTTP(S) \u63a2\u9488\u4f1a\u8bf7\u6c42\u8bf8\u5982 \/health<\/code> \u7684\u8def\u5f84\uff0c\u5e76\u671f\u671b\u5f97\u5230 2xx \u6216 3xx \u72b6\u6001\u7801\uff0c\u56e0\u6b64\u5b83\u662f Web \u670d\u52a1\u6700\u6709\u529b\u7684\u5065\u5eb7\u4fe1\u53f7\u3002\u5c06 ICMP \u4e0e TCP \u6216 HTTP(S) \u7ed3\u5408\u4f7f\u7528\uff0c\u4f60\u5c31\u80fd\u540c\u65f6\u6355\u6349\u7f51\u7edc\u5c42\u548c\u670d\u52a1\u5c42\u7684\u6545\u969c\u3002<\/p>\n

\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n
\u63a2\u9488\u7c7b\u578b<\/th>\n\u5178\u578b\u4f7f\u7528\u573a\u666f<\/th>\n\u5c40\u9650\u6027<\/th>\n\u63a8\u8350\u642d\u914d<\/th>\n<\/tr>\n
Ping\uff08ICMP\uff09<\/td>\n\u9a8c\u8bc1\u4e3b\u673a\u7684\u7f51\u7edc\u53ef\u8fbe\u6027<\/td>\n\u53ef\u80fd\u88ab\u9632\u706b\u5899\u6216 ICMP \u8fc7\u6ee4\u963b\u6b62\uff1b\u65e0\u6cd5\u786e\u8ba4\u5e94\u7528\u53ef\u7528\u6027<\/td>\n\u4e0e HTTP(S) \u6216\u7aef\u53e3\uff08TCP\uff09\u642d\u914d\uff0c\u4ee5\u68c0\u6d4b\u670d\u52a1\u5c42\u6545\u969c<\/td>\n<\/tr>\n
\u7aef\u53e3\uff08TCP\uff09<\/td>\n\u68c0\u67e5\u6307\u5b9a\u670d\u52a1\u7aef\u53e3\u662f\u5426\u5f00\u653e\u5e76\u63a5\u53d7\u8fde\u63a5<\/td>\n\u65e0\u6cd5\u9a8c\u8bc1\u5e94\u7528\u903b\u8f91\u6216\u5185\u5bb9\u5c42\u9519\u8bef<\/td>\n\u7ed3\u5408 Ping\uff08\u7528\u4e8e\u7f51\u7edc\u5c42\uff09\u6216 HTTP(S)\uff08\u7528\u4e8e\u5e94\u7528\u5c42\uff09<\/td>\n<\/tr>\n
HTTP(S)<\/td>\n\u68c0\u67e5\u7f51\u7ad9\u3001API \u6216 Web \u5e94\u7528\u7684\u53ef\u7528\u6027\u4e0e\u54cd\u5e94\u72b6\u6001\u7801<\/td>\n\u65e0\u6cd5\u68c0\u6d4b DNS \u95ee\u9898\u3001\u7f51\u7edc\u5c42\u6545\u969c\u6216 SSL \u8bc1\u4e66\u8fc7\u671f<\/td>\n\u4e0e DNS\uff08\u7528\u4e8e\u89e3\u6790\uff09\u53ca SSL\/TLS\uff08\u7528\u4e8e\u8bc1\u4e66\u5065\u5eb7\uff09\u642d\u914d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u65f6\u95f4\u53c2\u6570\u51b3\u5b9a\u4e86\u68c0\u6d4b\u901f\u5ea6\u3002\u8bf7\u6839\u636e\u4f60\u671f\u671b\u7684\u6062\u590d\u65f6\u95f4\u6765\u914d\u7f6e\u5065\u5eb7\u68c0\u67e5\u95f4\u9694\uff0c\u4ee5\u53ca\u89e6\u53d1\u6545\u969c\u8f6c\u79fb\u524d\u6240\u9700\u7684\u8fde\u7eed\u5931\u8d25\u6b21\u6570\u3002\u5e38\u89c1\u505a\u6cd5\u662f\u8bbe\u7f6e\u4e00\u4e2a\u5728\u5feb\u901f\u68c0\u6d4b\u4e0e\u51cf\u5c11\u8bef\u62a5\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861\u7684\u5931\u8d25\u9608\u503c\u3002<\/p>\n

\u63a2\u9488\u4f1a\u901a\u8fc7 HTTP\u3001HTTPS\u3001TCP \u6216 ICMP\uff0c\u4ee5\u53ef\u914d\u7f6e\u7684\u95f4\u9694\u6d4b\u8bd5\u6bcf\u4e2a\u7aef\u70b9\uff0c\u5e76\u53ef\u63d0\u4f9b\u66f4\u5feb\u7684\u68c0\u67e5\u95f4\u9694\u3002\u68c0\u67e5\u4f1a\u540c\u65f6\u4ece\u591a\u4e2a\u533a\u57df\u53d1\u8d77\uff0c\u56e0\u6b64\u5355\u4e00\u8def\u5f84\u4e0a\u7684\u7f51\u7edc\u6296\u52a8\u4e0d\u4f1a\u89e6\u53d1\u8bef\u5207\u6362\u3002<\/p><\/blockquote>\n

\u91cd\u8bd5\u673a\u5236\u8fd8\u589e\u52a0\u4e86\u4e00\u5c42\u4fdd\u969c\u3002\u4f60\u53ef\u4ee5\u914d\u7f6e\u591a\u5c11\u6b21\u8fde\u7eed\u5931\u8d25\u540e\u5c06\u8bbe\u5907\u6807\u8bb0\u4e3a\u5b95\u673a\uff0c\u4ee5\u53ca\u591a\u5c11\u6b21\u8fde\u7eed\u6210\u529f\u540e\u5c06\u5176\u6062\u590d\u4e0a\u7ebf\u3002\u8fd9\u4e9b\u53c2\u6570\u5c06\u51b3\u5b9a\u6545\u969c\u8f6c\u79fb\u548c\u6062\u590d\u6240\u9700\u7684\u65f6\u95f4\u3002<\/p>\n

\u81ea\u52a8\u5316\u8bb0\u5f55\u66f4\u65b0\u4e0e TTL<\/h3>\n

\u81ea\u52a8\u5316\u4f1a\u7528 API \u8c03\u7528\u53d6\u4ee3\u4eba\u5de5\u5728\u63a7\u5236\u53f0\u4e2d\u7684\u4fee\u6539\uff0c\u56e0\u6b64\u6bcf\u4e00\u6b21\u53d8\u66f4\u90fd\u80fd\u540c\u6b65\u5230\u6240\u6709\u5e73\u53f0\u3002\u8bf7\u4f7f\u7528 DNS \u670d\u52a1\u5546\u63d0\u4f9b\u7684 API\uff08REST\u3001Terraform \u6216 SDK\uff09\u6765\u81ea\u52a8\u4fee\u6539\u8bb0\u5f55\uff0c\u5e76\u5e94\u7528\u57fa\u4e8e\u89d2\u8272\u7684\u8bbf\u95ee\u63a7\u5236\uff0c\u540c\u65f6\u4fdd\u7559\u5ba1\u8ba1\u65e5\u5fd7\u3002\u5728\u5404\u4e2a\u6743\u5a01\u526f\u672c\u4e4b\u95f4\u590d\u5236\u533a\u57df\u5185\u5bb9\uff0c\u4ee5\u786e\u4fdd\u5728\u6545\u969c\u8f6c\u79fb\u53d1\u751f\u524d\uff0c\u5907\u7528\u5e94\u7b54\u5df2\u7ecf\u51c6\u5907\u5c31\u7eea\u3002<\/p>\n

TTL \u51b3\u5b9a\u4e86\u89e3\u6790\u5668\u4f1a\u4fe1\u4efb\u4e00\u4e2a\u5e94\u7b54\u591a\u4e45\u3002\u66f4\u4f4e\u7684 TTL \u6709\u52a9\u4e8e\u66f4\u5feb\u7684\u6545\u969c\u8f6c\u79fb\u3002\u5728\u8ba1\u5212\u4e2d\u7684\u53d8\u66f4\u4e4b\u524d\uff0c\u5e94\u63d0\u524d\u8db3\u591f\u65f6\u95f4\u964d\u4f4e TTL\uff0c\u4ee5\u4fbf\u65e7\u7684\u7f13\u5b58\u5e94\u7b54\u8fc7\u671f\u3002\u67d0\u4e9b\u89e3\u6790\u5668\u4f1a\u5f3a\u5236\u6267\u884c 30 \u79d2\u7684\u6700\u5c0f\u4e0b\u9650\uff0c\u56e0\u6b64\u4f4e\u4e8e\u8fd9\u4e2a\u503c\u5e76\u4e0d\u80fd\u88ab\u7a33\u5b9a\u5730\u9075\u5b88\u3002<\/p>\n

\u63a5\u53e3\u5ea6\u91cf\u503c\u548c DNS \u670d\u52a1\u5668\u987a\u5e8f\u4e5f\u4f1a\u51b3\u5b9a\u89e3\u6790\u4f18\u5148\u7ea7\u3002\u5f53\u4f60\u914d\u7f6e\u81ea\u52a8 DNS \u89e3\u6790\u5207\u6362\u65f6\uff0c\u8bf7\u5728\u6295\u5165\u751f\u4ea7\u524d\u89c4\u5212\u597d\u8fd9\u4e9b\u56e0\u7d20\u3002\u4e00\u4e2a\u914d\u7f6e\u4e86\u4e24\u4e2a DNS \u6761\u76ee\u7684\u5ba2\u6237\u7aef\u4f1a\u4f18\u5148\u67e5\u8be2\u5217\u8868\u4e2d\u7684\u7b2c\u4e00\u4e2a\u670d\u52a1\u5668\uff0c\u800c\u5728\u591a\u5bbf\u4e3b\u4e3b\u673a\u4e0a\uff0c\u63a5\u53e3\u5ea6\u91cf\u503c\u4f1a\u7528\u4e8e\u6253\u7834\u4f18\u5148\u7ea7\u5e73\u5c40\u3002\u8bf7\u8bb0\u5f55\u6bcf\u4e00\u9879\u66f4\u6539 DNS \u670d\u52a1\u5668\u6240\u9700\u7684\u53d8\u66f4\uff0c\u5e76\u5728\u6574\u4e2a\u7f51\u7edc\u4e2d\u4fdd\u6301\u8fde\u63a5\u8bb0\u5f55\u7684\u6700\u65b0\u72b6\u6001\u3002<\/p>\n

\u6d4b\u8bd5\u5e76\u9a8c\u8bc1\u6545\u969c\u8f6c\u79fb<\/strong><\/h2>\n

\u6a21\u62df\u6545\u969c\u5e76\u67e5\u770b\u65e5\u5fd7<\/h3>\n

\u5982\u679c\u4f60\u4ece\u672a\u771f\u6b63\u89e6\u53d1\u8fc7\u6545\u969c\u8f6c\u79fb\uff0c\u5c31\u4e0d\u80fd\u771f\u6b63\u4fe1\u4efb\u8fd9\u5957\u65b9\u6848\u3002\u505c\u6b62\u4e3b\u670d\u52a1\u3001\u963b\u65ad\u5176\u5065\u5eb7\u68c0\u67e5\u7aef\u53e3\uff0c\u6216\u8005\u62d4\u6389\u5b83\u7684\u7f51\u7edc\u94fe\u8def\u3002\u89c2\u5bdf DNS \u8bb0\u5f55\u9700\u8981\u591a\u957f\u65f6\u95f4\u5207\u6362\u5230\u5907\u7528\u670d\u52a1\u5668\u3002\u7136\u540e\u68c0\u67e5\u670d\u52a1\u5546\u65e5\u5fd7\u6216 BIND \u67e5\u8be2\u65e5\u5fd7\uff0c\u786e\u8ba4\u5207\u6362\u53d1\u751f\u7684\u51c6\u786e\u65f6\u95f4\u70b9\u3002<\/p>\n

\u63a5\u4e0b\u6765\u67e5\u770b\u5065\u5eb7\u68c0\u67e5\u5386\u53f2\u3002\u5173\u6ce8\u5931\u8d25\u6b21\u6570\u3001\u65f6\u95f4\u6233\u4ee5\u53ca\u6062\u590d\u4e8b\u4ef6\u3002\u5e72\u51c0\u7684\u65e5\u5fd7\u5e94\u53ea\u663e\u793a\u4e00\u6b21\u6e05\u6670\u7684\u72b6\u6001\u8f6c\u6362\uff1b\u800c\u6df7\u4e71\u7684\u65e5\u5fd7\u5219\u8868\u660e\u51fa\u73b0\u4e86\u6296\u52a8\uff0c\u8fd9\u610f\u5473\u7740\u4f60\u7684\u9608\u503c\u8bbe\u7f6e\u8fc7\u4e8e\u654f\u611f\u3002\u8bf7\u6309\u8ba1\u5212\u91cd\u590d\u6f14\u7ec3\uff0c\u5e76\u8bb0\u5f55\u6bcf\u4e2a\u6b65\u9aa4\u8017\u8d39\u4e86\u591a\u957f\u65f6\u95f4\u3002<\/p>\n

\u9a8c\u8bc1\u66f4\u6539 DNS \u670d\u52a1\u5668\u8bbe\u7f6e<\/h3>\n

\u5ba2\u6237\u7aef\u884c\u4e3a\u51b3\u5b9a\u4e86\u6545\u969c\u8f6c\u79fb\u662f\u5426\u771f\u7684\u80fd\u5e2e\u52a9\u7528\u6237\u3002\u5728 Windows 11 \u4e0a\uff0c\u624b\u52a8\u6307\u5b9a\u4e00\u4e2a DNS \u6761\u76ee\uff0c\u5e76\u786e\u8ba4\u89e3\u6790\u5668\u786e\u5b9e\u4f7f\u7528\u4e86\u65b0\u7684 DNS \u670d\u52a1\u5668\u5730\u5740\u3002\u5728 macOS \u4e0a\uff0c\u53ef\u4ee5\u901a\u8fc7\u7ec8\u7aef\u4e2d\u7684 networksetup<\/code> \u547d\u4ee4\u8bbe\u7f6e DNS \u670d\u52a1\u5668\u5e76\u9a8c\u8bc1\u66f4\u6539\u3002<\/p>\n

\u4f60\u8fd8\u53ef\u4ee5\u5728 Cisco \u4ea4\u6362\u673a\u4e0a\u66f4\u6539 DNS \u670d\u52a1\u5668\uff0c\u5e76\u5c06\u8bb0\u5f55\u6620\u5c04\u5230\u6b63\u786e\u7684\u4e3b\u673a\u3002\u6bcf\u6b21\u66f4\u6539\u540e\uff0c\u90fd\u5e94\u6e05\u7a7a\u7f13\u5b58\u5e76\u518d\u6b21\u67e5\u8be2\u8be5\u540d\u79f0\u3002\u786e\u8ba4\u8fd4\u56de\u7ed3\u679c\u6307\u5411\u5065\u5eb7\u670d\u52a1\u5668\uff0c\u540c\u65f6\u68c0\u67e5\u90a3\u4e9b\u4ecd\u7531 DHCP \u7ba1\u7406\u7684\u5ba2\u6237\u7aef\u662f\u5426\u4f9d\u65e7\u81ea\u52a8\u83b7\u53d6 DNS \u670d\u52a1\u5668\u5730\u5740\u3002\u5728\u5ba3\u5e03\u6d4b\u8bd5\u5b8c\u6210\u524d\uff0c\u8bf7\u4ece\u591a\u4e2a\u7f51\u7edc\u8def\u5f84\u9a8c\u8bc1\u8fde\u901a\u6027\u3002<\/p>\n

\n
<\/div>\n<\/div>\n

\u73b0\u5728\u4f60\u5df2\u7ecf\u638c\u63e1\u4e86\u5b8c\u6574\u6d41\u7a0b\uff1a\u51c6\u5907\u670d\u52a1\u5668\u548c DNS \u8bbf\u95ee\u6743\u9650\uff0c\u9009\u62e9\u81ea\u5efa\u6216\u4e91\u7aef\u65b9\u6848\uff0c\u5b9a\u4e49\u5065\u5eb7\u68c0\u67e5\u63a2\u9488\uff0c\u8c03\u6574\u5207\u6362\u903b\u8f91\uff0c\u7136\u540e\u9a8c\u8bc1\u7ed3\u679c\u3002\u81ea\u52a8\u5316\u80fd\u591f\u8ba9\u4f60\u7684 DNS \u5e94\u7b54\u4fdd\u6301\u51c6\u786e\uff0c\u5e76\u52a0\u5feb\u4e8b\u6545\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n

\u8bf7\u901a\u8fc7\u4ee5\u4e0b\u4e60\u60ef\u6765\u7ef4\u62a4\u8fd9\u5957\u914d\u7f6e\uff1a<\/p>\n