{"id":25227,"date":"2025-09-26T15:53:25","date_gmt":"2025-09-26T07:53:25","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/how-to-fix-dns-not-responding-on-us-servers\/"},"modified":"2025-09-26T15:57:31","modified_gmt":"2025-09-26T07:57:31","slug":"how-to-fix-dns-not-responding-on-us-servers","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-dns-not-responding-on-us-servers\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9\u7f8e\u570b\u4f3a\u670d\u5668\u4e0a\u7684DNS\u7121\u56de\u61c9\u554f\u984c"},"content":{"rendered":"<p>\u5728\u7ba1\u7406<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/us\/cn2\/\" target=\"_blank\">\u7f8e\u570b\u4f3a\u670d\u5668\u79df\u7528<\/a>\u57fa\u790e\u8a2d\u65bd\u6642\uff0c\u9047\u5230<a href=\"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/dns-stress-testing-tools-methods\/\" target=\"_blank\">DNS<\/a>\u7121\u56de\u61c9\u554f\u984c\u53ef\u80fd\u6703\u5c0e\u81f4\u6574\u500b\u7cfb\u7d71\u7671\u7613\u3002\u9019\u4efd\u5168\u9762\u7684\u6307\u5357\u6df1\u5165\u63a2\u8a0e\u4e86\u9032\u968eDNS\u6545\u969c\u6392\u9664\u6280\u8853\uff0c\u70ba\u7cfb\u7d71\u7ba1\u7406\u54e1\u548cDevOps\u5de5\u7a0b\u5e2b\u63d0\u4f9b\u89e3\u6c7aDNS\u9023\u63a5\u554f\u984c\u7684\u5be6\u7528\u89e3\u6c7a\u65b9\u6848\u3002\u7121\u8ad6\u60a8\u662f\u7ba1\u7406\u55ae\u53f0\u4f3a\u670d\u5668\u9084\u662f\u76e3\u7763\u8907\u96dc\u7684\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\uff0c\u9019\u4e9b\u7d93\u904e\u5be6\u6230\u6aa2\u9a57\u7684\u7b56\u7565\u90fd\u5c07\u5e6b\u52a9\u60a8\u7dad\u6301\u6700\u4f73DNS\u6548\u80fd\u3002<\/p>\n<h2><strong>\u7406\u89e3DNS\u56de\u61c9\u554f\u984c\uff1a\u6df1\u5165\u57fa\u790e<\/strong><\/h2>\n<p>\u5728\u6df1\u5165\u89e3\u6c7a\u65b9\u6848\u4e4b\u524d\uff0c\u4e86\u89e3\u73fe\u4ee3\u4f3a\u670d\u5668\u74b0\u5883\u4e2dDNS\u89e3\u6790\u7684\u8907\u96dc\u6a5f\u5236\u81f3\u95dc\u91cd\u8981\u3002DNS\uff08\u57df\u540d\u7cfb\u7d71\uff09\u4f5c\u70ba\u4e00\u500b\u968e\u5c64\u5f0f\u7684\u5206\u6563\u5f0f\u8cc7\u6599\u5eab\u904b\u4f5c\uff0c\u5c07\u4eba\u985e\u53ef\u8b80\u7684\u57df\u540d\u8f49\u63db\u70baIP\u4f4d\u5740\u3002\u7576DNS\u505c\u6b62\u56de\u61c9\u6642\uff0c\u901a\u5e38\u6703\u8868\u73fe\u51fa\u4ee5\u4e0b\u75c7\u72c0\uff1a<\/p>\n<ul>\n<li>\u7121\u6cd5\u5c07\u57df\u540d\u89e3\u6790\u70baIP\u4f4d\u5740<\/li>\n<li>DNS\u67e5\u8a62\u5ef6\u9072\u589e\u52a0<\/li>\n<li>\u9593\u6b47\u6027\u9023\u63a5\u4e2d\u65b7<\/li>\n<li>\u5340\u57df\u50b3\u8f38\u5931\u6557<\/li>\n<li>\u905e\u8ff4\u67e5\u8a62\u903e\u6642<\/li>\n<\/ul>\n<h2><strong>\u5feb\u901f\u8a3a\u65b7\uff1a\u5c08\u696d\u7d1a\u5de5\u5177\u548c\u6307\u4ee4<\/strong><\/h2>\n<p>\u70ba\u4e86\u9ad8\u6548\u7684DNS\u6545\u969c\u6392\u9664\uff0c\u5229\u7528\u547d\u4ee4\u5217\u5de5\u5177\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u9032\u968e\u8a3a\u65b7\u6280\u8853\u7684\u7cfb\u7d71\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\u57fa\u672c\u9023\u63a5\u6e2c\u8a66\uff1a\n<pre><code>ping -c 4 your-dns-server\r\nnslookup domain.com\r\ndig +trace domain.com<\/code><\/pre>\n<\/li>\n<li>DNS\u4f3a\u670d\u5668\u72c0\u614b\u9a57\u8b49\uff1a\n<pre><code>systemctl status named\r\nservice bind9 status<\/code><\/pre>\n<\/li>\n<li>DNS\u67e5\u8a62\u5206\u6790\uff1a\n<pre><code>tcpdump -i any port 53\r\nwireshark -i any -f \"port 53\"<\/code><\/pre>\n<\/li>\n<\/ol>\n<h2><strong>\u5e38\u898b\u6839\u672c\u539f\u56e0\u53ca\u5176\u6280\u8853\u89e3\u6c7a\u65b9\u6848<\/strong><\/h2>\n<p>\u57fa\u65bc\u8c50\u5bcc\u7684\u4f3a\u670d\u5668\u79df\u7528\u7d93\u9a57\uff0c\u4ee5\u4e0b\u662fDNS\u7121\u56de\u61c9\u7684\u4e3b\u8981\u539f\u56e0\u53ca\u5176\u76f8\u61c9\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<ul>\n<li>\u540d\u7a31\u4f3a\u670d\u5668\u914d\u7f6e\u932f\u8aa4\n<ul>\n<li>\u6aa2\u67e5\/etc\/resolv.conf\u914d\u7f6e<\/li>\n<li>\u9a57\u8b49named.conf\u8a9e\u6cd5<\/li>\n<li>\u9a57\u8b49\u5340\u57df\u6a94\u6848\u689d\u76ee<\/li>\n<\/ul>\n<\/li>\n<li>\u7db2\u8def\u9023\u63a5\u554f\u984c\n<ul>\n<li>\u76e3\u63a7UDP\/TCP\u57e053<\/li>\n<li>\u6aa2\u67e5iptables\u898f\u5247<\/li>\n<li>\u6aa2\u67e5\u7db2\u8def\u4ecb\u9762\u914d\u7f6e<\/li>\n<\/ul>\n<\/li>\n<li>\u8cc7\u6e90\u9650\u5236\n<ul>\n<li>\u76e3\u63a7\u7cfb\u7d71\u8ca0\u8f09\u5e73\u5747\u503c<\/li>\n<li>\u6aa2\u67e5\u53ef\u7528\u8a18\u61b6\u9ad4<\/li>\n<li>\u5206\u6790\u78c1\u789fI\/O\u6548\u80fd<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u9032\u968e\u6545\u969c\u6392\u9664\u7a0b\u5e8f<\/strong><\/h2>\n<p>\u7576\u57fa\u672c\u8a3a\u65b7\u7121\u6cd5\u8b58\u5225\u554f\u984c\u6642\uff0c\u5be6\u65bd\u9019\u4e9b\u9032\u968e\u6545\u969c\u6392\u9664\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>DNS\u5feb\u53d6\u7ba1\u7406\uff1a\n<pre><code>systemd-resolve --flush-caches\r\nrndc flush\r\n\/etc\/init.d\/nscd restart<\/code><\/pre>\n<\/li>\n<li>\u5340\u57df\u50b3\u8f38\u9a57\u8b49\uff1a\n<pre><code>dig @primary-ns axfr domain.com\r\nrndc reload zone domain.com<\/code><\/pre>\n<\/li>\n<li>DNS\u5b89\u5168\u7a3d\u6838\uff1a\n<pre><code>dnssec-verify domain.com.zone\r\nnamed-checkzone domain.com \/var\/named\/domain.com.zone<\/code><\/pre>\n<\/li>\n<\/ol>\n<h2><strong>\u5be6\u65bd\u9810\u9632\u63aa\u65bd\u548c\u76e3\u63a7<\/strong><\/h2>\n<p>\u4e3b\u52d5\u76e3\u63a7\u548c\u7dad\u8b77\u5c0d\u65bc\u9810\u9632\u7f8e\u570b\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u4e2d\u7684DNS\u554f\u984c\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u5168\u9762\u7684\u9810\u9632\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u81ea\u52d5\u76e3\u63a7\u8a2d\u7f6e\n<ul>\n<li>\u914d\u7f6ePrometheus DNS\u6307\u6a19\u6536\u96c6<\/li>\n<li>\u8a2d\u7f6eGrafana\u5100\u8868\u677f\u9032\u884c\u8996\u89ba\u5316<\/li>\n<li>\u70baDNS\u56de\u61c9\u6642\u9593\u5be6\u65bd\u8b66\u5831\u95be\u503c<\/li>\n<\/ul>\n<\/li>\n<li>\u5b9a\u671f\u5065\u5eb7\u6aa2\u67e5\n<ul>\n<li>\u76e3\u63a7\u67e5\u8a62\u89e3\u6790\u6642\u9593<\/li>\n<li>\u8ffd\u8e64\u5feb\u53d6\u547d\u4e2d\u7387<\/li>\n<li>\u5206\u6790\u4f3a\u670d\u5668\u8ca0\u8f09\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u57fa\u790e\u8a2d\u65bd\u6700\u4f73\u5be6\u8e10<\/strong><\/h2>\n<p>\u8981\u5728\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u4e2d\u7dad\u8b77\u5f37\u5927\u7684DNS\u57fa\u790e\u8a2d\u65bd\uff0c\u8acb\u5be6\u65bd\u4ee5\u4e0b\u95dc\u9375\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ol>\n<li>\u5197\u9918\u914d\u7f6e\uff1a\n<pre><code># Primary DNS configuration\r\noptions {\r\n    directory \"\/var\/named\";\r\n    allow-transfer { secondary_ip; };\r\n    also-notify { secondary_ip; };\r\n    recursion no;\r\n    dnssec-enable yes;\r\n    dnssec-validation yes;\r\n};<\/code><\/pre>\n<\/li>\n<li>\u6548\u80fd\u6700\u4f73\u5316\uff1a\n<ul>\n<li>\u5be6\u65bdDNS\u8f2a\u8a62\u4ee5\u9032\u884c\u8ca0\u8f09\u5206\u914d<\/li>\n<li>\u914d\u7f6e\u6700\u4f73TTL\u503c<\/li>\n<li>\u555f\u7528DNSSEC\u4ee5\u589e\u5f37\u5b89\u5168\u6027<\/li>\n<\/ul>\n<\/li>\n<li>\u5099\u4efd\u7b56\u7565\uff1a\n<pre><code>#!\/bin\/bash\r\n# DNS configuration backup script\r\nbackup_dir=\"\/backup\/dns\"\r\ndate_stamp=$(date +%Y%m%d)\r\ntar -czf $backup_dir\/dns_conf_$date_stamp.tar.gz \/etc\/named.conf \/var\/named\/<\/code><\/pre>\n<\/li>\n<\/ol>\n<h2><strong>\u7dca\u6025\u61c9\u8b8a\u5354\u5b9a<\/strong><\/h2>\n<p>\u7576DNS\u554f\u984c\u767c\u751f\u6642\uff0c\u8acb\u9075\u5faa\u4ee5\u4e0b\u7cfb\u7d71\u5316\u7684\u7dca\u6025\u61c9\u8b8a\u5354\u5b9a\uff1a<\/p>\n<ol>\n<li>\u521d\u6b65\u8a55\u4f30\n<ul>\n<li>\u6aa2\u67e5\u7cfb\u7d71\u65e5\u8a8c\uff08\/var\/log\/messages, \/var\/log\/named\/\uff09<\/li>\n<li>\u9a57\u8b49DNS\u670d\u52d9\u72c0\u614b<\/li>\n<li>\u76e3\u63a7\u8cc7\u6e90\u4f7f\u7528\u7387<\/li>\n<\/ul>\n<\/li>\n<li>\u5373\u6642\u884c\u52d5\n<ul>\n<li>\u5982\u679c\u53ef\u7528\uff0c\u5207\u63db\u5230\u5099\u7528DNS\u4f3a\u670d\u5668<\/li>\n<li>\u6e05\u9664DNS\u5feb\u53d6<\/li>\n<li>\u5fc5\u8981\u6642\u91cd\u65b0\u555f\u52d5DNS\u670d\u52d9<\/li>\n<\/ul>\n<\/li>\n<li>\u6587\u4ef6\u8a18\u9304\n<ul>\n<li>\u8a18\u9304\u4e8b\u4ef6\u6642\u9593\u8ef8<\/li>\n<li>\u8a18\u9304\u5df2\u61c9\u7528\u7684\u4fee\u5fa9\u65b9\u6848<\/li>\n<li>\u4f7f\u7528\u65b0\u89e3\u6c7a\u65b9\u6848\u66f4\u65b0\u904b\u4f5c\u624b\u518a<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>DNS\u7ba1\u7406\u54e1\u5fc5\u5099\u6545\u969c\u6392\u9664\u5de5\u5177<\/strong><\/h2>\n<p>\u4ee5\u4e0b\u662f\u6bcf\u500bDNS\u7ba1\u7406\u54e1\u90fd\u61c9\u8a72\u638c\u63e1\u7684\u5c08\u696d\u7d1a\u5de5\u5177\u7cbe\u9078\u5217\u8868\uff1a<\/p>\n<ul>\n<li>\u547d\u4ee4\u5217\u5de5\u5177\n<ul>\n<li>dig\uff1a\u9032\u968eDNS\u67e5\u8a62\u5de5\u5177<\/li>\n<li>bind-tools\uff1a\u5b8c\u6574\u7684DNS\u6545\u969c\u6392\u9664\u5957\u4ef6<\/li>\n<li>dnstracer\uff1aDNS\u89e3\u6790\u8def\u5f91\u5206\u6790\u5668<\/li>\n<\/ul>\n<\/li>\n<li>\u76e3\u63a7\u89e3\u6c7a\u65b9\u6848\n<ul>\n<li>Nagios\uff1a\u7528\u65bc\u5168\u9762DNS\u76e3\u63a7<\/li>\n<li>Zabbix\uff1a\u5373\u6642DNS\u6548\u80fd\u8ffd\u8e64<\/li>\n<li>DNSdist\uff1a\u9032\u968eDNS\u8ca0\u8f09\u5e73\u8861\u5668<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff08FAQ\uff09<\/strong><\/h2>\n<p>\u4ee5\u4e0b\u662f\u95dc\u65bc\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u4e2dDNS\u554f\u984c\u7684\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff1a<\/p>\n<ol>\n<li>\u554f\uff1aDNS\u914d\u7f6e\u61c9\u8a72\u591a\u4e45\u5099\u4efd\u4e00\u6b21\uff1f<br \/>\n        <br \/>\u7b54\uff1a\u5be6\u65bd\u6bcf\u65e5\u81ea\u52d5\u5099\u4efd\uff0c\u4e26\u5c07\u914d\u7f6e\u5132\u5b58\u5728Git\u7b49\u7248\u672c\u63a7\u5236\u7cfb\u7d71\u4e2d\u3002<\/li>\n<li>\u554f\uff1a\u6700\u4f73DNS TTL\u8a2d\u5b9a\u662f\u591a\u5c11\uff1f<br \/>\n        <br \/>\u7b54\uff1a\u5c0d\u65bc\u751f\u7522\u74b0\u5883\uff0c3600\u79d2\uff081\u5c0f\u6642\uff09\u53ef\u4ee5\u5e73\u8861\u5feb\u53d6\u6548\u7387\u548c\u66f4\u65b0\u9748\u6d3b\u6027\u3002<\/li>\n<li>\u554f\uff1a\u5982\u4f55\u9632\u6b62DNS\u5feb\u53d6\u4e2d\u6bd2\uff1f<br \/>\n        <br \/>\u7b54\uff1a\u555f\u7528DNSSEC\uff0c\u5be6\u65bd\u56de\u61c9\u7387\u9650\u5236\uff0c\u4e26\u5b9a\u671f\u66f4\u65b0DNS\u8edf\u9ad4\u3002<\/li>\n<\/ol>\n<h2><strong>\u6548\u80fd\u6700\u4f73\u5316\u6280\u5de7<\/strong><\/h2>\n<p>\u4f7f\u7528\u9019\u4e9b\u9032\u968e\u6700\u4f73\u5316\u6280\u8853\u6700\u5927\u5316\u60a8\u7684DNS\u4f3a\u670d\u5668\u6548\u80fd\uff1a<\/p>\n<ul>\n<li>\u5feb\u53d6\u6700\u4f73\u5316\n<pre><code>options 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