{"id":163343,"date":"2019-12-03T12:47:55","date_gmt":"2019-12-03T04:47:55","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=163343"},"modified":"2019-11-11T10:49:47","modified_gmt":"2019-11-11T02:49:47","slug":"centos8-dns-cache","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/centos8-dns-cache.html","title":{"rendered":"CentOS 8 \u6e05\u9664 DNS \u7f13\u5b58\u7684\u65b9\u6cd5"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td style=\"padding: 5px 12px; width: 25px; font-size: 22px; text-align: center; background: #E8E8E8; line-height: 30px; color: #999;\">\u5bfc\u8bfb<\/td>\n<td style=\"padding: 10px 10px 12px; line-height: 20px;\"><strong>nscd\uff08Name Service Cache Daemon\uff09\u662f\u4e00\u79cd\u80fd\u591f\u7f13\u5b58 passwd\u3001group\u3001hosts \u7684\u672c\u5730\u7f13\u5b58\u670d\u52a1\uff0c\u5206\u522b\u5bf9\u5e94\u4e09\u4e2a\u6e90 \/etc\/passwd\u3001\/etc\/hosts\u3001\/etc\/resolv.conf\u3002\u5176\u6700\u4e3a\u660e\u663e\u7684\u4f5c\u7528\u5c31\u662f\u52a0\u5feb DNS \u89e3\u6790\u901f\u5ea6\uff0c\u5728\u63a5\u53e3\u8c03\u7528\u9891\u7e41\u7684\u5185\u7f51\u73af\u5883\u5efa\u8bae\u5f00\u542f\u3002<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5f00\u542f nscd \u7684 hosts \u7f13\u5b58\u670d\u52a1\u540e\uff0c\u6bcf\u6b21\u5185\u90e8\u63a5\u53e3\u8bf7\u6c42\u4e0d\u4f1a\u90fd\u53d1\u8d77 dns \u89e3\u6790\u8bf7\u6c42\uff0c\u800c\u662f\u76f4\u63a5\u547d\u4e2d nscd \u7f13\u5b58\u6563\u5217\u8868\uff0c\u4ece\u800c\u83b7\u53d6\u5bf9\u5e94\u670d\u52a1\u5668 ip \u5730\u5740\uff0c\u8fd9\u6837\u53ef\u4ee5\u5728\u5927\u91cf\u5185\u90e8\u63a5\u53e3\u8bf7\u6c42\u65f6\u51cf\u5c11\u63a5\u53e3\u7684\u54cd\u5e94\u65f6\u95f4\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/11\/dns.png\" alt=\"\" width=\"800\" height=\"533\" class=\"aligncenter size-full wp-image-163344\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/11\/dns.png 800w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/11\/dns-300x200.png 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/11\/dns-768x512.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>nscd\u6e05\u7406\u7f13\u5b58\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n<pre>[root@localhost ~]# nscd -i hosts<\/pre>\n<p>\u5982\u679cnscd\u6ca1\u88c5\uff0c\u5219\u9700\u8981\u624b\u52a8\u5b89\u88c5\u4e00\u4e0b<\/p>\n<p>1. \u5b89\u88c5 nscd<\/p>\n<pre>[root@localhost ~]# yum -y install nscd<\/pre>\n<p>2. \u67e5\u770b\u72b6\u6001 \u53ca \u542f\u52a8\u547d\u4ee4<\/p>\n<pre>[root@localhost ~]# systemctl status nscd       # \u67e5\u770b\u72b6\u6001systemctl start nscd\r\n\r\n\r\n[root@localhost www.linuxidc.com]# systemctl start nscd    # \u542f\u52a8 nscd<\/pre>\n<p>3. \u542f\u52a8nscd \u670d\u52a1\u540e\uff0c\u6e05\u7f13\u5b58<\/p>\n<pre>[root@localhost ~]# nscd -i hosts<\/pre>\n<p>\u5f00\u542f nscd \u7684 hosts \u7f13\u5b58\u670d\u52a1\u540e\uff0c\u6bcf\u6b21\u5185\u90e8\u63a5\u53e3\u8bf7\u6c42\u4e0d\u4f1a\u90fd\u53d1\u8d77 dns \u89e3\u6790\u8bf7\u6c42\uff0c\u800c\u662f\u76f4\u63a5\u547d\u4e2d nscd \u7f13\u5b58\u6563\u5217\u8868\uff0c\u4ece\u800c\u83b7\u53d6\u5bf9\u5e94\u670d\u52a1\u5668 ip \u5730\u5740\uff0c\u8fd9\u6837\u53ef\u4ee5\u5728\u5927\u91cf\u5185\u90e8\u63a5\u53e3\u8bf7\u6c42\u65f6\u51cf\u5c11\u63a5\u53e3\u7684\u54cd\u5e94\u65f6\u95f4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f00\u542f nscd \u7684 hosts \u7f13\u5b58\u670d\u52a1\u540e\uff0c\u6bcf\u6b21\u5185\u90e8\u63a5\u53e3\u8bf7\u6c42\u4e0d\u4f1a\u90fd\u53d1\u8d77 dns \u89e3\u6790\u8bf7\u6c42\uff0c\u800c\u662f\u76f4\u63a5\u547d\u4e2d nsc [&hellip;]<\/p>\n","protected":false},"author":317,"featured_media":163345,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-163343","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/163343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/317"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=163343"}],"version-history":[{"count":4,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/163343\/revisions"}],"predecessor-version":[{"id":163486,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/163343\/revisions\/163486"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/163345"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=163343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=163343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=163343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}