{"id":476887,"date":"2023-08-09T09:05:02","date_gmt":"2023-08-09T09:05:02","guid":{"rendered":""},"modified":"2023-09-05T11:13:37","modified_gmt":"2023-09-05T11:13:37","slug":"dns-cname-record","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/dns-cname-record\/","title":{"rendered":"DNS cname \u8bb0\u5f55"},"content":{"rendered":"<p>\u57df\u540d\u7cfb\u7edf (DNS) CNAME\uff08\u89c4\u8303\u540d\u79f0\uff09\u8bb0\u5f55\u662f DNS \u57fa\u7840\u8bbe\u65bd\u7684\u57fa\u672c\u7ec4\u6210\u90e8\u5206\uff0c\u7528\u4e8e\u5c06\u4e00\u4e2a\u57df\u540d\u6620\u5c04\u5230\u53e6\u4e00\u4e2a\u57df\u540d\u3002\u5b83\u5145\u5f53\u76ee\u6807\u57df\u7684\u522b\u540d\uff0c\u5141\u8bb8\u591a\u4e2a\u540d\u79f0\u89e3\u6790\u4e3a\u540c\u4e00 IP \u5730\u5740\u3002 CNAME \u8bb0\u5f55\u5728\u7b80\u5316 DNS \u7ba1\u7406\u65b9\u9762\u53d1\u6325\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u7f51\u7ad9\u4e3b\u673a\u540d\u66f4\u6539\u6216\u914d\u7f6e OneProxy \u7b49\u4ee3\u7406\u670d\u52a1\u5668\u65f6\u3002<\/p>\n<h2>DNS CNAME \u8bb0\u5f55\u7684\u8d77\u6e90\u548c\u9996\u6b21\u63d0\u53ca\u7684\u5386\u53f2<\/h2>\n<p>DNS \u7cfb\u7edf\u4e8e 20 \u4e16\u7eaa 80 \u5e74\u4ee3\u521d\u5f15\u5165\uff0c\u4ee5\u53d6\u4ee3 ARPANET \u4e2d\u4f7f\u7528\u7684 HOSTS.TXT \u6587\u4ef6\u3002 1983 \u5e74 RFC 882 \u548c RFC 883 \u4e2d\u8bb0\u5f55\u7684\u539f\u59cb DNS \u89c4\u8303\u4e0d\u5305\u62ec CNAME \u8bb0\u5f55\u3002\u7136\u800c\uff0c\u522b\u540d\u7684\u6982\u5ff5\u4ee5\u53ca\u591a\u4e2a\u540d\u79f0\u6307\u5411\u540c\u4e00\u5730\u5740\u7684\u9700\u6c42\u53d8\u5f97\u663e\u800c\u6613\u89c1\uff0c\u5bfc\u81f4 1987 \u5e74\u53d1\u5e03\u7684 RFC 1034 \u548c RFC 1035 \u4e2d\u5f15\u5165\u4e86 CNAME \u8bb0\u5f55\u3002<\/p>\n<h2>DNS CNAME \u8bb0\u5f55\u7684\u8be6\u7ec6\u4fe1\u606f<\/h2>\n<p>CNAME \u8bb0\u5f55\u4e3b\u8981\u7528\u4e8e\u4e3a\u73b0\u6709\u4e3b\u673a\u540d\u521b\u5efa\u522b\u540d\u6216\u5907\u7528\u540d\u79f0\u3002\u5f53 DNS \u89e3\u6790\u5668\u9047\u5230 CNAME \u8bb0\u5f55\u65f6\uff0c\u5b83\u4f1a\u5c06\u5f53\u524d\u57df\u540d\u66ff\u6362\u4e3a CNAME \u8bb0\u5f55\u4e2d\u6307\u5b9a\u7684\u89c4\u8303\u540d\u79f0\uff0c\u5e76\u7ee7\u7eed\u8fdb\u884c\u65b0\u7684\u89e3\u6790\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u4eec\u6709\u4e00\u6761 CNAME \u8bb0\u5f55\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><div class=\"bg-black rounded-md mb-4\"><div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans justify-between rounded-t-md\"><span>\u76ee\u6807<\/span><button class=\"flex ml-auto gap-2\"><svg stroke=\"currentColor\" fill=\"none\" stroke-width=\"2\" viewbox=\"0 0 24 24\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"h-4 w-4\" height=\"1em\" width=\"1em\" ><path d=\"M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2\"><\/path><rect x=\"8\" y=\"2\" width=\"8\" height=\"4\" rx=\"1\" ry=\"1\"><\/rect><\/svg>\u590d\u5236\u4ee3\u7801<\/button><\/div><div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs language-objectivec\" data-no-translation=\"\">www.example.com <span class=\"hljs-built_in\">CNAME<\/span> oneproxy.pro\n<\/code><\/div><\/div><\/pre>\n<p>\u4efb\u4f55\u5bf9\u201c<a href=\"http:\/\/www.example.com\" target=\"_new\" rel=\"noopener nofollow\">www.example.com<\/a>\u201d\u5c06\u88ab\u91cd\u5b9a\u5411\u5230\u201coneproxy.pro\u201d\u3002<\/p>\n<h2>DNS CNAME \u8bb0\u5f55\u7684\u5185\u90e8\u7ed3\u6784\u53ca\u5176\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>CNAME \u8bb0\u5f55\u5177\u6709\u7b80\u5355\u7684\u7ed3\u6784\uff0c\u5305\u542b\u4e24\u4e2a\u57fa\u672c\u7ec4\u4ef6\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u522b\u540d\uff1a<\/strong> \u8fd9\u662f\u60a8\u8981\u4e3a\u5176\u521b\u5efa\u522b\u540d\u7684\u57df\u6216\u5b50\u57df\uff0c\u7531\u5b8c\u5168\u9650\u5b9a\u57df\u540d (FQDN) \u8868\u793a\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u89c4\u8303\u540d\u79f0\uff1a<\/strong> \u8fd9\u662f\u522b\u540d\u6307\u5411\u7684\u76ee\u6807\u57df\u6216\u5b50\u57df\uff0c\u4e5f\u7531\u5b8c\u5168\u9650\u5b9a\u57df\u540d (FQDN) \u8868\u793a\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u5f53 DNS \u89e3\u6790\u5668\u6536\u5230\u5bf9 CNAME \u8bb0\u5f55\u4e2d\u6307\u5b9a\u7684\u522b\u540d\u7684\u67e5\u8be2\u65f6\uff0c\u5b83\u4f1a\u67e5\u627e\u4e0e\u8be5\u522b\u540d\u5173\u8054\u7684\u89c4\u8303\u540d\u79f0\uff0c\u5e76\u4f7f\u7528\u65b0\u540d\u79f0\u7ee7\u7eed\u8fdb\u884c DNS \u89e3\u6790\u8fc7\u7a0b\u3002<\/p>\n<h2>DNS CNAME\u8bb0\u5f55\u7684\u5173\u952e\u7279\u5f81\u5206\u6790<\/h2>\n<p>DNS CNAME \u8bb0\u5f55\u7684\u4e3b\u8981\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u522b\u540d\u521b\u5efa\uff1a<\/strong> CNAME \u8bb0\u5f55\u5141\u8bb8\u521b\u5efa\u522b\u540d\uff0c\u4ee5\u7b80\u5316\u57df\u7ba1\u7406\uff0c\u5e76\u5728\u4e3b\u673a\u540d\u66f4\u6539\u6216\u4f7f\u7528\u4ee3\u7406\u670d\u52a1\u5668\u65f6\u63d0\u4f9b\u7075\u6d3b\u6027\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5355\u4e00\u5206\u8fa8\u7387\uff1a<\/strong> \u591a\u4e2a\u57df\u540d\u53ef\u4ee5\u901a\u8fc7 CNAME \u8bb0\u5f55\u4e0e\u5355\u4e2a IP \u5730\u5740\u5173\u8054\uff0c\u4ece\u800c\u51cf\u5c11\u91cd\u590d A\uff08\u5730\u5740\uff09\u8bb0\u5f55\u7684\u9700\u8981\u3002<\/p>\n<\/li>\n<li>\n<p><strong>TTL\u63a7\u5236\uff1a<\/strong> \u53ef\u4ee5\u4e3a CNAME \u8bb0\u5f55\u8bbe\u7f6e\u751f\u5b58\u65f6\u95f4 (TTL)\uff0c\u4f7f\u7ba1\u7406\u5458\u80fd\u591f\u63a7\u5236 DNS \u89e3\u6790\u5668\u7f13\u5b58\u8bb0\u5f55\u4fe1\u606f\u7684\u65f6\u95f4\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>DNS CNAME \u8bb0\u5f55\u7684\u7c7b\u578b<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u522b\u540d<\/th>\n<th>\u89c4\u8303\u540d\u79f0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"http:\/\/www.example.com\" target=\"_new\" rel=\"noopener nofollow\">www.example.com<\/a><\/td>\n<td>oneproxy.pro<\/td>\n<\/tr>\n<tr>\n<td>ftp.example.com<\/td>\n<td>proxy.oneproxy.pro<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>DNS CNAME\u8bb0\u5f55\u7684\u4f7f\u7528\u65b9\u6cd5\u3001\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u7684\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6cd5<\/h2>\n<h3>1.\u8d1f\u8f7d\u5747\u8861\u548c\u5197\u4f59\uff1a<\/h3>\n<p>CNAME \u8bb0\u5f55\u53ef\u7528\u4e8e\u8de8\u591a\u4e2a\u670d\u52a1\u5668\u96c6\u7fa4\u5206\u914d\u6d41\u91cf\uff0c\u4ece\u800c\u63d0\u9ad8\u6027\u80fd\u548c\u5197\u4f59\u3002\u7136\u800c\uff0c\u4f7f\u7528 CNAME \u8bb0\u5f55\u8fdb\u884c\u8d1f\u8f7d\u5747\u8861\u7684\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\u662f DNS \u89e3\u6790\u5668\u7ecf\u5e38\u7f13\u5b58 CNAME \u7ed3\u679c\uff0c\u5bfc\u81f4\u5206\u5e03\u4e0d\u5747\u5300\u3002\u4e3a\u4e86\u7f13\u89e3\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u4e3a CNAME \u8bb0\u5f55\u8bbe\u7f6e\u8f83\u4f4e\u7684 TTL \u503c\uff0c\u4f46\u8fd9\u53ef\u80fd\u4f1a\u589e\u52a0 DNS \u67e5\u8be2\u6d41\u91cf\u3002<\/p>\n<h3>2. \u7f51\u7ad9\u8fc1\u79fb\uff1a<\/h3>\n<p>\u5c06\u7f51\u7ad9\u8fc1\u79fb\u5230\u65b0\u57df\u6216\u6258\u7ba1\u63d0\u4f9b\u5546\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 CNAME \u8bb0\u5f55\u5c06\u6d41\u91cf\u4ece\u65e7\u57df\u5f15\u5bfc\u5230\u65b0\u57df\u3002\u4f46\u662f\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u641c\u7d22\u5f15\u64ce\u5bf9\u4e24\u4e2a\u57df\u90fd\u5efa\u7acb\u7d22\u5f15\uff0c\u4ece\u800c\u5bfc\u81f4\u91cd\u590d\u5185\u5bb9\u3002\u5b9e\u65bd\u6b63\u786e\u7684 301 \u91cd\u5b9a\u5411\u53ef\u4ee5\u5e2e\u52a9\u89e3\u51b3\u6b64\u95ee\u9898\u3002<\/p>\n<h2>\u4e3b\u8981\u7279\u70b9\u53ca\u4e0e\u540c\u7c7b\u672f\u8bed\u7684\u6bd4\u8f83<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u5b66\u671f<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>CNAME\u8bb0\u5f55<\/td>\n<td>\u5c06\u4e00\u4e2a\u57df\u540d\u6620\u5c04\u5230\u53e6\u4e00\u4e2a\u57df\u540d\uff0c\u521b\u5efa\u522b\u540d\u6216\u5907\u7528\u540d\u79f0\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u4e2a\u8bb0\u5f55<\/td>\n<td>\u5c06\u57df\u540d\u89e3\u6790\u4e3a IPv4 \u5730\u5740\u3002<\/td>\n<\/tr>\n<tr>\n<td>AAAA\u8bb0\u5f55<\/td>\n<td>\u5c06\u57df\u540d\u89e3\u6790\u4e3a IPv6 \u5730\u5740\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6b63\u5411 DNS \u67e5\u627e<\/td>\n<td>\u5c06\u57df\u540d\u89e3\u6790\u4e3a IP \u5730\u5740\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u53cd\u5411 DNS \u67e5\u627e<\/td>\n<td>\u5c06 IP \u5730\u5740\u89e3\u6790\u4e3a\u57df\u540d\u3002<\/td>\n<\/tr>\n<tr>\n<td>MX\u8bb0\u5f55<\/td>\n<td>\u6307\u5b9a\u8d1f\u8d23\u4ee3\u8868\u57df\u63a5\u6536\u7535\u5b50\u90ae\u4ef6\u7684\u90ae\u4ef6\u670d\u52a1\u5668\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e0e DNS CNAME \u8bb0\u5f55\u76f8\u5173\u7684\u672a\u6765\u89c2\u70b9\u548c\u6280\u672f<\/h2>\n<p>DNS \u7cfb\u7edf\u968f\u7740\u6280\u672f\u548c\u5b89\u5168\u6027\u7684\u8fdb\u6b65\u800c\u4e0d\u65ad\u53d1\u5c55\u3002\u672a\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u9884\u671f\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u63d0\u9ad8\u5b89\u5168\u6027\uff1a<\/strong> DNS over HTTPS (DoH) \u548c DNS over TLS (DoT) \u534f\u8bae\u53ef\u80fd\u4f1a\u53d8\u5f97\u66f4\u52a0\u666e\u904d\uff0c\u4ece\u800c\u589e\u5f3a\u9690\u79c1\u6027\u5e76\u9632\u8303\u57fa\u4e8e DNS \u7684\u653b\u51fb\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e0e\u533a\u5757\u94fe\u96c6\u6210\uff1a<\/strong> DNS \u7cfb\u7edf\u53ef\u80fd\u4f1a\u63a2\u7d22\u4e0e\u533a\u5757\u94fe\u6280\u672f\u7684\u96c6\u6210\uff0c\u4ee5\u589e\u5f3a\u5b89\u5168\u6027\u3001\u53bb\u4e2d\u5fc3\u5316\u548c\u6297\u5ba1\u67e5\u80fd\u529b\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u5982\u4f55\u4f7f\u7528\u4ee3\u7406\u670d\u52a1\u5668\u6216\u5c06\u5176\u4e0e DNS CNAME \u8bb0\u5f55\u5173\u8054<\/h2>\n<p>\u4ee3\u7406\u670d\u52a1\u5668\uff08\u4f8b\u5982 OneProxy\uff09\u53ef\u4ee5\u4e0e DNS CNAME \u8bb0\u5f55\u5173\u8054\uff0c\u4ee5\u63d0\u4f9b\u5bf9\u8d44\u6e90\u6216\u670d\u52a1\u7684\u95f4\u63a5\u8bbf\u95ee\u3002\u8fd9\u5bf9\u4e8e\u4ee5\u4e0b\u60c5\u51b5\u7279\u522b\u6709\u7528\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u8d1f\u8f7d\u5747\u8861\uff1a<\/strong> CNAME \u8bb0\u5f55\u53ef\u4ee5\u6839\u636e\u53ef\u7528\u6027\u6216\u5730\u7406\u4f4d\u7f6e\u5c06\u8bf7\u6c42\u5b9a\u5411\u5230\u4e0d\u540c\u7684\u4ee3\u7406\u670d\u52a1\u5668\uff0c\u4ece\u800c\u6709\u6548\u5730\u5206\u914d\u8d1f\u8f7d\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6545\u969c\u8f6c\u79fb\u673a\u5236\uff1a<\/strong> CNAME \u8bb0\u5f55\u6709\u52a9\u4e8e\u5728\u4e3b\u670d\u52a1\u5668\u4e0d\u53ef\u7528\u65f6\u81ea\u52a8\u6545\u969c\u8f6c\u79fb\u5230\u5907\u4efd\u4ee3\u7406\u670d\u52a1\u5668\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5b50\u57df\u8def\u7531\uff1a<\/strong> \u4ee3\u7406\u63d0\u4f9b\u5546\u53ef\u4ee5\u4f7f\u7528 CNAME \u8bb0\u5f55\u5c06\u7279\u5b9a\u5b50\u57df\u8def\u7531\u5230\u4e0d\u540c\u7684\u4ee3\u7406\u670d\u52a1\u5668\uff0c\u4ece\u800c\u5b9e\u73b0\u6709\u9488\u5bf9\u6027\u7684\u8bbf\u95ee\u63a7\u5236\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1034\" target=\"_new\" rel=\"noopener nofollow\">RFC 1034 \u2013 \u57df\u540d \u2013 \u6982\u5ff5\u548c\u8bbe\u65bd<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1035\" target=\"_new\" rel=\"noopener nofollow\">RFC 1035 \u2013 \u57df\u540d \u2013 \u5b9e\u65bd\u548c\u89c4\u8303<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Domain_Name_System\" target=\"_new\" rel=\"noopener nofollow\">DNS \u7b80\u4ecb - \u7ef4\u57fa\u767e\u79d1<\/a><\/li>\n<li><a href=\"https:\/\/computer.howstuffworks.com\/dns.htm\" target=\"_new\" rel=\"noopener nofollow\">DNS \u89e3\u91ca \u2013 HowStuffWorks<\/a><\/li>\n<\/ul>","protected":false},"featured_media":476888,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476887","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>DNS CNAME Record for the Website of the Proxy Server Provider OneProxy (oneproxy.pro)<\/mark>","faq_items":[{"question":"What is a DNS CNAME record and how does it work?","answer":"<p>A DNS CNAME record, also known as a Canonical Name record, is used to create an alias for a domain or subdomain, allowing it to resolve to another domain name. When a DNS resolver encounters a CNAME record, it replaces the alias with the canonical name specified in the record and continues the DNS resolution process with the new name.<\/p>"},{"question":"How does a DNS CNAME record differ from an A record?","answer":"<p>The DNS CNAME record maps one domain name to another, providing an alias or alternative name. On the other hand, an A record resolves a domain name to an IPv4 address directly. While CNAME records allow for flexibility and easy hostname changes, A records are essential for direct IP address resolution.<\/p>"},{"question":"What types of DNS CNAME records exist?","answer":"<p>DNS CNAME records can be employed for load balancing by distributing traffic across multiple server clusters. However, caching of CNAME results can cause uneven distribution. To manage this, a low Time-to-Live (TTL) value can be set to reduce caching duration, though it may increase DNS query traffic.<\/p>"},{"question":"How can DNS CNAME records be utilized for load balancing?","answer":"<p>Yes, CNAME records are useful during website migration to direct traffic from the old domain to the new one. However, caution must be exercised to avoid duplicate content issues with search engines. Implementing proper 301 redirects can address this concern effectively.<\/p>"},{"question":"Can DNS CNAME records be used during website migration?","answer":"<p>Proxy servers can leverage DNS CNAME records to facilitate load balancing, failover mechanisms, and targeted subdomain routing. By directing requests to different proxy servers based on availability or geographic locations, CNAME records enhance the efficiency and reliability of proxy server access.<\/p>"},{"question":"How can proxy servers like OneProxy benefit from DNS CNAME records?","answer":"<p>The future of DNS CNAME records may involve improvements in security with protocols like DNS over HTTPS (DoH) and DNS over TLS (DoT). Additionally, the integration of DNS with blockchain technology might enhance security, decentralization, and resistance to censorship.<\/p>"},{"question":"What are the future perspectives and technologies related to DNS CNAME records?","answer":""}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476887","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476887\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/476888"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=476887"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}