{"id":43820,"date":"2024-10-06T10:47:12","date_gmt":"2024-10-06T02:47:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/43820\/"},"modified":"2024-10-06T10:47:13","modified_gmt":"2024-10-06T02:47:13","slug":"centos-7-%e5%a6%82%e4%bd%95%e4%bf%ae%e6%94%b9-dns%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/43820\/","title":{"rendered":"CentOS 7 \u5982\u4f55\u4fee\u6539 DNS\uff1f"},"content":{"rendered":"<h1 id=\"centos-7-%e5%a6%82%e4%bd%95%e4%bf%ae%e6%94%b9-dns%ef%bc%9f-jXBdJJXOlV\">CentOS 7 \u5982\u4f55\u4fee\u6539 DNS\uff1f<\/h1>\n<p>\u5728 CentOS 7 \u7cfb\u7d71\u4e2d\uff0cDNS\uff08\u57df\u540d\u7cfb\u7d71\uff09\u662f\u5c07\u57df\u540d\u8f49\u63db\u70ba IP \u5730\u5740\u7684\u91cd\u8981\u7d44\u4ef6\u3002\u6b63\u78ba\u914d\u7f6e DNS \u5c0d\u65bc\u78ba\u4fdd\u4f3a\u670d\u5668\u80fd\u5920\u6b63\u78ba\u89e3\u6790\u57df\u540d\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 CentOS 7 \u4e2d\u4fee\u6539 DNS \u8a2d\u7f6e\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u7ba1\u7406\u5176\u4f3a\u670d\u5668\u3002<\/p>\n<h2 id=\"1-%e6%aa%a2%e6%9f%a5%e7%95%b6%e5%89%8d-dns-%e8%a8%ad%e7%bd%ae-jXBdJJXOlV\">1. \u6aa2\u67e5\u7576\u524d DNS \u8a2d\u7f6e<\/h2>\n<p>\u5728\u4fee\u6539 DNS \u8a2d\u7f6e\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u6aa2\u67e5\u7576\u524d\u7684 DNS \u914d\u7f6e\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u770b\u7576\u524d\u7684 DNS \u4f3a\u670d\u5668\uff1a<\/p>\n<pre><code>cat \/etc\/resolv.conf<\/code><\/pre>\n<p>\u8a72\u6587\u4ef6\u5305\u542b\u4e86\u7cfb\u7d71\u7576\u524d\u4f7f\u7528\u7684 DNS \u4f3a\u670d\u5668\u5730\u5740\u3002\u901a\u5e38\uff0c\u60a8\u6703\u770b\u5230\u985e\u4f3c\u4ee5\u4e0b\u7684\u5167\u5bb9\uff1a<\/p>\n<pre><code>nameserver 8.8.8.8\nnameserver 8.8.4.4<\/code><\/pre>\n<p>\u9019\u88e1\u7684\u5730\u5740\u662f Google \u63d0\u4f9b\u7684\u516c\u5171 DNS \u4f3a\u670d\u5668\u3002<\/p>\n<h2 id=\"2-%e4%bf%ae%e6%94%b9-dns-%e8%a8%ad%e7%bd%ae-jXBdJJXOlV\">2. \u4fee\u6539 DNS \u8a2d\u7f6e<\/h2>\n<p>\u8981\u4fee\u6539 DNS \u8a2d\u7f6e\uff0c\u60a8\u9700\u8981\u7de8\u8f2f \/etc\/resolv.conf \u6587\u4ef6\u3002\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u6587\u672c\u7de8\u8f2f\u5668\uff0c\u4f8b\u5982 vi \u6216 nano\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 vi \u7de8\u8f2f\u5668\u7684\u6b65\u9a5f\uff1a<\/p>\n<pre><code>sudo vi \/etc\/resolv.conf<\/code><\/pre>\n<p>\u5728\u6587\u4ef6\u4e2d\uff0c\u60a8\u53ef\u4ee5\u6dfb\u52a0\u6216\u4fee\u6539 nameserver \u884c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u4f7f\u7528 Cloudflare \u7684 DNS \u4f3a\u670d\u5668\uff0c\u53ef\u4ee5\u5c07\u5176\u66f4\u6539\u70ba\uff1a<\/p>\n<pre><code>nameserver 1.1.1.1\nnameserver 1.0.0.1<\/code><\/pre>\n<p>\u5b8c\u6210\u5f8c\uff0c\u6309\u4e0b <code>Esc<\/code> \u9375\uff0c\u7136\u5f8c\u8f38\u5165 <code>:wq<\/code> \u4fdd\u5b58\u4e26\u9000\u51fa\u7de8\u8f2f\u5668\u3002<\/p>\n<h2 id=\"3-%e7%a2%ba%e4%bf%9d-dns-%e8%a8%ad%e7%bd%ae%e6%8c%81%e4%b9%85%e5%8c%96-jXBdJJXOlV\">3. \u78ba\u4fdd DNS \u8a2d\u7f6e\u6301\u4e45\u5316<\/h2>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\/etc\/resolv.conf \u6587\u4ef6\u5728\u7cfb\u7d71\u91cd\u555f\u5f8c\u53ef\u80fd\u6703\u88ab\u91cd\u7f6e\u3002\u70ba\u4e86\u78ba\u4fdd DNS \u8a2d\u7f6e\u6301\u4e45\u5316\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 NetworkManager \u4f86\u914d\u7f6e DNS\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 nmcli \u547d\u4ee4\u7684\u6b65\u9a5f\uff1a<\/p>\n<pre><code>nmcli con show<\/code><\/pre>\n<p>\u9019\u5c07\u5217\u51fa\u6240\u6709\u7684\u7db2\u7d61\u9023\u63a5\u3002\u627e\u5230\u60a8\u8981\u4fee\u6539\u7684\u9023\u63a5\u540d\u7a31\uff0c\u7136\u5f8c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u8a2d\u7f6e DNS\uff1a<\/p>\n<pre><code>nmcli con mod \"\u60a8\u7684\u9023\u63a5\u540d\u7a31\" ipv4.dns \"1.1.1.1,1.0.0.1\"<\/code><\/pre>\n<p>\u63a5\u8457\uff0c\u91cd\u65b0\u555f\u52d5\u7db2\u7d61\u9023\u63a5\u4ee5\u61c9\u7528\u66f4\u6539\uff1a<\/p>\n<pre><code>nmcli con down \"\u60a8\u7684\u9023\u63a5\u540d\u7a31\" &amp;&amp; nmcli con up \"\u60a8\u7684\u9023\u63a5\u540d\u7a31\"<\/code><\/pre>\n<h2 id=\"4-%e6%b8%ac%e8%a9%a6-dns-%e9%85%8d%e7%bd%ae-jXBdJJXOlV\">4. \u6e2c\u8a66 DNS \u914d\u7f6e<\/h2>\n<p>\u5b8c\u6210 DNS \u8a2d\u7f6e\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u6e2c\u8a66 DNS \u662f\u5426\u6b63\u5e38\u5de5\u4f5c\uff1a<\/p>\n<pre><code>nslookup www.example.com<\/code><\/pre>\n<p>\u5982\u679c\u914d\u7f6e\u6b63\u78ba\uff0c\u60a8\u61c9\u8a72\u80fd\u5920\u770b\u5230\u8a72\u57df\u540d\u7684 IP \u5730\u5740\u3002\u5982\u679c\u51fa\u73fe\u932f\u8aa4\uff0c\u8acb\u6aa2\u67e5\u60a8\u7684 DNS \u8a2d\u7f6e\u662f\u5426\u6b63\u78ba\u3002<\/p>\n<h2 id=\"5-%e5%b8%b8%e8%a6%8b%e5%95%8f%e9%a1%8c-jXBdJJXOlV\">5. \u5e38\u898b\u554f\u984c<\/h2>\n<ul>\n<li><strong>\u70ba\u4ec0\u9ebc\u6211\u7684 DNS \u8a2d\u7f6e\u4e0d\u751f\u6548\uff1f<\/strong><br \/>\u53ef\u80fd\u662f\u56e0\u70ba \/etc\/resolv.conf \u6587\u4ef6\u88ab\u5176\u4ed6\u670d\u52d9\u8986\u84cb\uff0c\u8acb\u78ba\u4fdd\u4f7f\u7528 NetworkManager \u9032\u884c\u914d\u7f6e\u3002<\/li>\n<li><strong>\u5982\u4f55\u6062\u5fa9\u5230\u9ed8\u8a8d DNS \u8a2d\u7f6e\uff1f<\/strong><br \/>\u60a8\u53ef\u4ee5\u522a\u9664 \/etc\/resolv.conf \u4e2d\u7684\u81ea\u5b9a\u7fa9\u8a2d\u7f6e\uff0c\u4e26\u91cd\u555f\u7db2\u7d61\u670d\u52d9\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jXBdJJXOlV\">\u7e3d\u7d50<\/h2>\n<p>\u5728 CentOS 7 \u4e2d\u4fee\u6539 DNS \u8a2d\u7f6e\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u901a\u904e\u7de8\u8f2f \/etc\/resolv.conf \u6587\u4ef6\u6216\u4f7f\u7528 NetworkManager \u9032\u884c\u914d\u7f6e\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406 DNS \u4f3a\u670d\u5668\u3002\u6b63\u78ba\u7684 DNS \u914d\u7f6e\u5c0d\u65bc\u4f3a\u670d\u5668\u7684\u6b63\u5e38\u904b\u884c\u81f3\u95dc\u91cd\u8981\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u6216\u5176\u4ed6\u4f3a\u670d\u5668\u6642\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5e6b\u52a9\u60a8\u9806\u5229\u5b8c\u6210 DNS \u7684\u4fee\u6539\uff0c\u63d0\u5347\u4f3a\u670d\u5668\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728 CentOS 7 \u4e2d\u4fee\u6539 DNS \u8bbe\u7f6e\uff0c\u786e\u4fdd\u7f51\u7edc\u8fde\u63a5\u7a33\u5b9a\uff0c\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\u3002\u7b80\u5355\u6b65\u9aa4\uff0c\u8f7b\u677e\u914d\u7f6e\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-43820","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/43820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=43820"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/43820\/revisions"}],"predecessor-version":[{"id":43821,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/43820\/revisions\/43821"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=43820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=43820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=43820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}