{"id":7281,"date":"2021-03-22T19:51:29","date_gmt":"2021-03-22T10:51:29","guid":{"rendered":"https:\/\/www.stuffy.site\/computers\/?p=7281"},"modified":"2023-03-16T14:41:24","modified_gmt":"2023-03-16T05:41:24","slug":"aws%e3%81%aecentos7%e3%81%abdnsmasq%e3%82%92%e3%82%a4%e3%83%b3%e3%82%b9%e3%83%88%e3%83%bc%e3%83%ab%e3%81%97%e3%81%a6%e3%81%bf%e3%81%9f","status":"publish","type":"post","link":"https:\/\/www.stuffy.site\/computers\/archives\/7281","title":{"rendered":"AWS\u306eCentOS7\u306bdnsmasq\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u307f\u305f"},"content":{"rendered":"\n<p><a href=\"https:\/\/aws.amazon.com\/jp\/premiumsupport\/knowledge-center\/dns-resolution-failures-ec2-linux\/\">Amazon EC2 Linux \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u306e DNS \u89e3\u6c7a\u306e\u5931\u6557\u3092\u56de\u907f\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b? | aws.amazon.com<\/a><\/p>\n\n\n\n<p>\u306b\u3088\u308bAmazon Linux2 \u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30fc\u30d0\u30fc\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092\u8a66\u3057\u3066\u307f\u305f\u306e\u3067\u3059\u304cCentOS7\u306e\u5834\u5408\u306f\u8a2d\u5b9a\u8a73\u7d30\u304c\u82e5\u5e72\u3001\u9055\u3046\u3088\u3046\u306a\u306e\u3067Google\u5148\u751f\u306b\u8a0a\u3044\u305f\u3068\u3053\u308d\u30df\u30c3\u30b7\u30e7\u30f3\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u8a18\u4e8b\u304c\u3042\u3063\u305f\u306e\u3067\u30b7\u30a7\u30a2\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<p><a href=\"https:\/\/nopipi.hatenablog.com\/entry\/2020\/11\/22\/202142\">AWS\u74b0\u5883\u306eRHEL7\/8\u306bDNS\u30ad\u30e3\u30c3\u30b7\u30e5(dnsmasq)\u3092\u8a2d\u5b9a\u3057\u3066\u307f\u305f<\/a><\/p>\n\n\n<pre># yum -y install dnsmasq<br>\n# groupadd -r dnsmasq\n# useradd -r -g dnsmasq dnsmasq<\/pre>\n\n\n<p>\u30fb\u30fb\u30fbconf\u30d5\u30a1\u30a4\u30eb\u3092\u8a2d\u5b9a\u3057\u3066 \/etc\/resolv.dnsmasq \u306e\u3068\u3053\u308d\u3067\u8e93\u304d\u307e\u3057\u305f\u304c\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u30b3\u30d4\u30da\u3059\u308c\u3070\u826f\u304f\u81ea\u5df1\u89e3\u6c7a\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n<pre>DNSIP=\"$(awk -e '\/^nameserver\/{ print $2}' \/etc\/resolv.conf)\"\necho $DNSIP\n\nsudo bash -c \"echo \\\"nameserver $DNSIP\\\" &gt; \/etc\/resolv.dnsmasq\"<\/pre>\n<p>systemctl status dnsmasq \u3057\u3066\u30b5\u30fc\u30d3\u30b9\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u78ba\u8a8d\u3001\u6b63\u5e38\u8d77\u52d5\u3002<\/p>\n<pre>[root@www ~]# systemctl status dnsmasq\n<span style=\"color:#00ff00\">\u25cf<\/span> dnsmasq.service - DNS caching server.\n   Loaded: loaded (\/usr\/lib\/systemd\/system\/dnsmasq.service; enabled; vendor preset: disabled)\n   Active: <span style=\"color:#00ff00\">active (running)<\/span> since Mon 2021-03-22 18:13:50 JST; 1h 31min ago\n Main PID: 17028 (dnsmasq)\n   CGroup: \/system.slice\/dnsmasq.service\n           mq17028 \/usr\/sbin\/dnsmasq -k\n\nMar 22 18:13:50 www systemd[1]: Stopped DNS caching server..\nMar 22 18:13:50 www systemd[1]: Started DNS caching server..\nMar 22 18:13:50 www dnsmasq[17028]: listening on lo(#1): 127.0.0.1\nMar 22 18:13:50 www dnsmasq[17028]: started, version 2.76 cachesize 500\nMar 22 18:13:50 www dnsmasq[17028]: compile time options: IPv6 GNU-getopt D...fy\nMar 22 18:13:50 www dnsmasq[17028]: reading \/etc\/resolv.dnsmasq\nMar 22 18:13:50 www dnsmasq[17028]: using nameserver 10.0.0.2#53\nMar 22 18:13:50 www dnsmasq[17028]: read \/etc\/hosts - 2 addresses\nMar 22 18:49:59 www dnsmasq[17028]: reading \/etc\/resolv.dnsmasq\nMar 22 18:49:59 www dnsmasq[17028]: using nameserver 10.0.0.2#53\nHint: Some lines were ellipsized, use -l to show in full.<\/pre>\n<pre># dig aws.amazon.com @127.0.0.1 <\/pre>\n\n\n<p>\u3057\u3066\u30ec\u30b3\u30fc\u30c9\u3092\u7121\u4e8b\u3001\u5f15\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n<pre>[root@www ~]# dig aws.amazon.com @127.0.0.1\n\n; &lt;&lt;&gt;&gt; DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.4 &lt;&lt;&gt;&gt; aws.amazon.com @127.0.0.1\n;; global options: +cmd\n;; Got answer:\n;; -&gt;&gt;HEADER&lt;&lt;- opcode: QUERY, status: NOERROR, id: 53163\n;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1\n\n;; OPT PSEUDOSECTION:\n; EDNS: version: 0, flags:; udp: 4096\n;; QUESTION SECTION:\n;aws.amazon.com.                        IN      A\n\n;; ANSWER SECTION:\naws.amazon.com.         39      IN      CNAME   tp.8e49140c2-frontier.amazon.com.\ntp.8e49140c2-frontier.amazon.com. 39 IN CNAME   dr49lng3n1n2s.cloudfront.net.\ndr49lng3n1n2s.cloudfront.net. 39 IN     A       143.204.75.74\n\n;; Query time: 3 msec\n;; SERVER: 127.0.0.1#53(127.0.0.1)\n;; WHEN: Mon Mar 22 19:49:24 JST 2021\n;; MSG SIZE  rcvd: 137<\/pre>","protected":false},"excerpt":{"rendered":"<p>Amazon EC2 Linux \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u306e DNS \u89e3\u6c7a\u306e\u5931\u6557\u3092\u56de\u907f\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b? | aws.amazon.com \u306b\u3088\u308bAmazon Linux2 \u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30fc\u30d0\u30fc\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32,33,102],"tags":[],"class_list":["post-7281","post","type-post","status-publish","format-standard","hentry","category-aws-2","category-dns","category-dnsmasq"],"_links":{"self":[{"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/posts\/7281","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/comments?post=7281"}],"version-history":[{"count":1,"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/posts\/7281\/revisions"}],"predecessor-version":[{"id":8630,"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/posts\/7281\/revisions\/8630"}],"wp:attachment":[{"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/media?parent=7281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/categories?post=7281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stuffy.site\/computers\/wp-json\/wp\/v2\/tags?post=7281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}