{"id":21935,"date":"2025-01-20T11:48:34","date_gmt":"2025-01-20T03:48:34","guid":{"rendered":"https:\/\/www.simcentric.com\/uncategorized-sc\/how-to-fix-dns-resolution-errors-on-los-angeles-servers\/"},"modified":"2025-01-20T11:51:03","modified_gmt":"2025-01-20T03:51:03","slug":"how-to-fix-dns-resolution-errors-on-los-angeles-servers","status":"publish","type":"post","link":"https:\/\/www.simcentric.com\/sc\/america-dedicated-server-sc\/how-to-fix-dns-resolution-errors-on-los-angeles-servers\/","title":{"rendered":"\u5982\u4f55\u4fee\u590d\u6d1b\u6749\u77f6\u670d\u52a1\u5668\u4e0a\u7684DNS\u89e3\u6790\u9519\u8bef\uff1f"},"content":{"rendered":"

\u5728\u6d1b\u6749\u77f6\u670d\u52a1\u5668<\/a>\u4e0a\u9047\u5230DNS\u89e3\u6790\u9519\u8bef<\/a>\u53ef\u80fd\u4f1a\u5bfc\u81f4\u60a8\u7684\u5728\u7ebf\u4e1a\u52a1\u9677\u5165\u505c\u987f\u3002\u65e0\u8bba\u60a8\u662f\u8fd0\u884c\u5173\u952e\u4e1a\u52a1\u5e94\u7528\u7a0b\u5e8f\u8fd8\u662f\u7ba1\u7406\u9ad8\u6d41\u91cf\u7f51\u7ad9\uff0cDNS\u95ee\u9898\u90fd\u9700\u8981\u7acb\u5373\u5904\u7406\u3002\u672c\u7efc\u5408\u6307\u5357\u5c06\u4ecb\u7ecd\u9ad8\u7ea7\u6545\u969c\u6392\u9664\u6280\u672f\uff0c\u5e76\u4e3a\u670d\u52a1\u5668\u79df\u7528\u548c\u670d\u52a1\u5668\u6258\u7ba1\u573a\u666f\u63d0\u4f9b\u5177\u4f53\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n

\u7406\u89e3DNS\u89e3\u6790\u9519\u8bef<\/strong><\/h2>\n

\u5f53\u670d\u52a1\u5668\u65e0\u6cd5\u6b63\u786e\u5c06\u57df\u540d\u8f6c\u6362\u4e3aIP\u5730\u5740\u65f6\uff0c\u5c31\u4f1a\u53d1\u751fDNS\u89e3\u6790\u9519\u8bef\u3002\u5728\u6d1b\u6749\u77f6\u6570\u636e\u4e2d\u5fc3\uff0c\u8fd9\u4e9b\u95ee\u9898\u901a\u5e38\u7531\u7f51\u7edc\u62e5\u585e\u3001DNS\u914d\u7f6e\u9519\u8bef\u6216\u4e0a\u6e38\u63d0\u4f9b\u5546\u95ee\u9898\u5f15\u8d77\u3002\u5e38\u89c1\u9519\u8bef\u6d88\u606f\u5305\u62ec”\u627e\u4e0d\u5230\u670d\u52a1\u5668DNS\u5730\u5740”\u6216”\u65e0\u6cd5\u8bbf\u95ee\u6b64\u7f51\u7ad9”\u3002<\/p>\n

\u8ba9\u6211\u4eec\u4f7f\u7528dig\u547d\u4ee4\u68c0\u67e5\u5178\u578b\u7684DNS\u67e5\u8be2\u8fc7\u7a0b\uff1a<\/p>\n

$ dig example.com\r\n\r\n;; QUESTION SECTION:\r\n;example.com.\t\t\tIN\tA\r\n\r\n;; ANSWER SECTION:\r\nexample.com.\t\t172800\tIN\tA\t93.184.216.34\r\n\r\n;; Query time: 48 msec\r\n;; SERVER: 8.8.8.8#53(8.8.8.8)\r\n;; WHEN: Wed Jan 20 12:00:00 EDT 2025\r\n;; MSG SIZE  rcvd: 65<\/code><\/pre>\n
\u5e38\u89c1DNS\u9519\u8bef\u7c7b\u578b<\/strong><\/h2>\n
\u4e86\u89e3\u9519\u8bef\u4ee3\u7801\u5bf9\u4e8e\u9ad8\u6548\u6545\u969c\u6392\u9664\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n
    \n
  • NXDOMAIN (\u4ee3\u78013) – \u57df\u540d\u4e0d\u5b58\u5728<\/li>\n
  • SERVFAIL (\u4ee3\u78012) – \u670d\u52a1\u5668\u672a\u80fd\u5b8c\u6210DNS\u8bf7\u6c42<\/li>\n
  • REFUSED (\u4ee3\u78015) – DNS\u670d\u52a1\u5668\u62d2\u7edd\u5904\u7406\u67e5\u8be2<\/li>\n
  • TIMEOUT – DNS\u670d\u52a1\u5668\u5728\u6307\u5b9a\u65f6\u95f4\u5185\u672a\u54cd\u5e94<\/li>\n<\/ul>\n
    \u6839\u56e0\u5206\u6790<\/strong><\/h2>\n
    \u5728\u6df1\u5165\u89e3\u51b3\u65b9\u6848\u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u4f7f\u7528\u8bca\u65ad\u5de5\u5177\u786e\u5b9a\u5177\u4f53\u539f\u56e0\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u547d\u4ee4\u884c\u5de5\u5177\u7684\u7cfb\u7edf\u65b9\u6cd5\uff1a<\/p>\n
    # \u68c0\u67e5\u5f53\u524dDNS\u8bbe\u7f6e\r\ncat \/etc\/resolv.conf\r\n\r\n# \u6d4b\u8bd5DNS\u89e3\u6790\r\nnslookup yourdomain.com\r\n\r\n# \u8ddf\u8e2aDNS\u67e5\u8be2\u8def\u5f84\r\ntraceroute yourdomain.com\r\n\r\n# \u5168\u7403\u68c0\u67e5DNS\u4f20\u64ad\r\ndig +trace yourdomain.com @8.8.8.8<\/code><\/pre>\n
    \u6d1b\u6749\u77f6\u6570\u636e\u4e2d\u5fc3\u7684\u7f51\u7edc\u7ba1\u7406\u5458\u7ecf\u5e38\u9047\u5230\u4ee5\u4e0b\u5177\u4f53\u60c5\u51b5\uff1a<\/p>\n
      \n
    • ISP\u7ea7DNS\u7f13\u5b58\u6c61\u67d3<\/li>\n
    • \u8fb9\u754c\u7f51\u5173\u534f\u8bae(BGP)\u8def\u7531\u95ee\u9898<\/li>\n
    • \u9632\u706b\u5899\u89c4\u5219\u963b\u6b62\u7aef\u53e353\/UDP\u548c53\/TCP\u4e0a\u7684DNS\u6d41\u91cf<\/li>\n
    • \u9012\u5f52DNS\u89e3\u6790\u5668\u6545\u969c<\/li>\n<\/ul>\n
      \u9ad8\u7ea7\u6545\u969c\u6392\u9664\u6b65\u9aa4<\/strong><\/h2>\n
      \u8ba9\u6211\u4eec\u5b9e\u65bd\u7cfb\u7edf\u5316\u7684\u8c03\u8bd5\u65b9\u6cd5\uff1a<\/p>\n
      # 1. \u9a8c\u8bc1\u672c\u5730DNS\u89e3\u6790\u5668\u529f\u80fd\r\nsystemctl status systemd-resolved\r\n\r\n# 2. \u68c0\u67e5DNS\u54cd\u5e94\u65f6\u95f4\r\ndig yourdomain.com +stats\r\n\r\n# 3. \u6d4b\u8bd5\u5907\u7528DNS\u670d\u52a1\u5668\r\ndig @1.1.1.1 yourdomain.com\r\ndig @8.8.8.8 yourdomain.com\r\n\r\n# 4. \u76d1\u63a7DNS\u6d41\u91cf\r\ntcpdump -i any port 53<\/code><\/pre>\n
      \u5728\u7ba1\u7406\u6d1b\u6749\u77f6\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u65f6\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\uff1a<\/p>\n