{"id":3939,"date":"2011-09-09T21:33:40","date_gmt":"2011-09-09T12:33:40","guid":{"rendered":"http:\/\/www.maocat.net\/?p=3939"},"modified":"2011-09-12T22:12:31","modified_gmt":"2011-09-12T13:12:31","slug":"dynamic-dns%e3%82%92%e4%bd%9c%e3%81%a3%e3%81%a6%e3%81%bf%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.maocat.net\/?p=3939","title":{"rendered":"Dynamic DNS\u3092\u4f5c\u3063\u3066\u307f\u308b"},"content":{"rendered":"<p>\u56fa\u5b9aIP\u3092\u6b62\u3081\u3066\u5916\u90e8\u306b\u9bd6\u3092\u501f\u308a\u3066\u3057\u307e\u3063\u305f\u70ba\u3001\u81ea\u5b85\u306eIP\u3092\u4f7f\u3046\u6642\u306b\u8272\u3005\u3068\u9762\u5012\u306a\u4f5c\u696d\u304c\u767a\u751f\u3057\u59cb\u3081\u305f\u3002<br \/>\n\u3053\u306e\u4f5c\u696d\u3092\u7c21\u7565\u5316\u3059\u308b\u70ba\u306b\u3001Dynamic DNS\u3092\u4f5c\u308b\u4e8b\u306b\u3057\u305f\u3002<br \/>\n\u4e00\u5fdc\u3001\u4eca\u4f7f\u3063\u3066\u3044\u308b\u30eb\u30fc\u30bf\u306e\u8ca9\u58f2\u5143\u304cDynamic DNS\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u30bf\u30c0\u3067\u3084\u3063\u3066\u308b\u3093\u3060\u3051\u3069\u3001\u6b21\u56de\u3082\u3053\u306e\u30e1\u30fc\u30ab\u30fc\u3092\u8cb7\u308f\u306a\u304d\u3083\u3044\u3051\u306a\u304f\u306a\u308b\u306e\u3067\u3001\u305d\u308c\u306f\u907f\u3051\u305f\u3044\u306e\u3068\u3001\u4ed6\u306b\u3082\u7121\u6599\u3067\u3084\u3063\u3066\u3044\u308b\u6240\u306f\u3042\u308b\u304c\u3001\u9762\u767d\u305d\u3046\u3068\u8a00\u3046\u7406\u7531\u3060\u3051\u3067\u3084\u3063\u3066\u3057\u307e\u3046\u2606<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066\u4f5c\u696d\u3059\u308b\u4eba\u306f\u3001\u4ee5\u4e0b\u306e\u6761\u4ef6\u306b\u9069\u5408\u3059\u308b\u4eba\u306e\u307f\u3002<\/p>\n<ol>\n<li>\u81ea\u5206\u3067\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u6240\u306b\u7f6e\u3044\u3066\u3042\u308bDNS\u3092\u6301\u3063\u3066\u3044\u308b<br \/>\n\u7121\u3044\u4eba\u306b\u306f\u610f\u5473\u306e\u7121\u3044\u8a18\u4e8b\u3067\u3059\u3002<br \/>\n\u7121\u6599\u304b\u6709\u6599\u306aDynamic DNS\u30b5\u30fc\u30d3\u30b9\u3092\u63a2\u3057\u3066\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<br \/>\n\u3046\u3061\u307f\u305f\u3044\u306a\u904b\u7528\u3092\u500b\u4eba\u3067\u3084\u3063\u3066\u308b\u306e\u306f\u3001\u5c11\u306a\u3044\u3068\u601d\u3044\u307e\u3059(\u7b11)<\/li>\n<li>Debian Linux\u3067BIND9\u304c\u52d5\u3044\u3066\u3044\u3066\u3001\u65e2\u306b\u30de\u30b9\u30bf\u30fc\u30be\u30fc\u30f3\u30b5\u30fc\u30d0\u306b\u306a\u3063\u3066\u3044\u308b<br \/>\n\u3046\u3061\u306e\u74b0\u5883\u3067\u3059\u3002<\/li>\n<li>SSH\u3067\u63a5\u7d9a\u3067\u304d\u308b<br \/>\n\u8272\u3005\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u4fc2\u3067\u624b\u3092\u629c\u304f\u70ba\u306b\u4f7f\u3063\u3066\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u307e\u305a\u59cb\u3081\u306b\u3001\/etc\/bind\u306e\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u3092\u5909\u66f4\u3057\u307e\u3059\u3002<br \/>\n\u591a\u5206\u3001\u521d\u671f\u72b6\u614b\u3067\u306f\u6240\u6709\u8005root\u3067\u30b0\u30eb\u30fc\u30d7bind\u306b\u306a\u3063\u3066\u307e\u3059\u304c\u3001bind\u306b\u5bfe\u3057\u3066\u306e\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u304c\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u306e\u66f8\u304d\u63db\u3048\u306bbind\u306b\u6a29\u9650\u304c\u5fc5\u8981\u306a\u306e\u3067\u5909\u66f4\u3002<\/p>\n<pre># chmod g+w \/etc\/bind<\/pre>\n<p>\u5f8c\u3001\u5b9f\u884c\u3059\u308b\u3068\u30be\u30fc\u30f3\u30d5\u30a1\u30a4\u30eb\u3082\u66f8\u304d\u63db\u3048\u3089\u308c\u308b\u306e\u3067\u3001\u5bfe\u8c61\u306e\u6b63\u5f15\u304d\u30be\u30fc\u30f3\u30d5\u30a1\u30a4\u30eb\u3082bind\u30e6\u30fc\u30b6\u304c\u66f8\u304d\u8fbc\u307f\u51fa\u6765\u308b\u69d8\u306b\u6a29\u9650\u3092\u5909\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u30be\u30fc\u30f3\u5b9a\u7fa9\u306e\u90e8\u5206\u3067\u3001\u66f8\u304d\u63db\u3048\u304c\u8d77\u3053\u308b\u90e8\u5206\u306b\u4ee5\u4e0b\u306e\u8a2d\u5b9a\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n<pre>allow-update {\r\n\u00a0\u00a0\u00a0 localhost;\r\n};<\/pre>\n<p>\u3053\u308c\u3092\u8ffd\u8a18\u3059\u308b\u4e8b\u3067\u3001\u30ed\u30fc\u30ab\u30eb\u30db\u30b9\u30c8\u304b\u3089\u306e\u307f\u30b3\u30de\u30f3\u30c9\u306b\u3088\u3063\u3066\u30be\u30fc\u30f3\u30d5\u30a1\u30a4\u30eb\u3092\u66f8\u304d\u63db\u3048\u308b\u4e8b\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u66f8\u304d\u63db\u3048\u308b\u65b9\u6cd5\u306fnsupdate\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<br \/>\n\u3053\u306e\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5bfe\u8a71\u5f0f\u306e\u30d7\u30ed\u30f3\u30d7\u30c8\u306b\u79fb\u884c\u3057\u307e\u3059\u3002<\/p>\n<pre>&gt; update add hoge.maocat.net. 3600 in a 192.168.255.1\r\n&gt; send<\/pre>\n<p>\u4e0a\u8a18\u306e\u30b3\u30de\u30f3\u30c9\u3067hoge.maocat.net\u3092192.168.255.1\u3068\u3057\u3066\u3001TTL3600\u3001A\u30ec\u30b3\u30fc\u30c9\u306e\u5f62\u3067\u767b\u9332\u3059\u308b\u4e8b\u304c\u51fa\u6765\u307e\u3059\u3002<br \/>\n\u524a\u9664\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n<pre>&gt; update delete hoge.maocat.net.\r\n&gt; send<\/pre>\n<p>\u66f4\u65b0\u3092\u78ba\u8a8d\u3059\u308b\u5834\u5408\u306f\u3001host\u30b3\u30de\u30f3\u30c9\u304bdig\u30b3\u30de\u30f3\u30c9(windows\u3067\u306fnslookup)\u3092\u4f7f\u7528\u3059\u308b\u3002<br \/>\n\u5b9f\u969b\u306b\u30be\u30fc\u30f3\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u307e\u308c\u308b\u306e\u306b\u306f\u5c11\u3057\u6642\u9593\u304c\u304b\u304b\u308b\u3002<\/p>\n<p>\u3067\u3001\u3053\u308c\u3092\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u66f8\u304d\u63db\u3048\u3092\u884c\u3046\u3002<br \/>\n\u30eb\u30fc\u30bf\u306b\u5272\u308a\u632f\u3089\u308c\u305fIP\u3092\u901a\u77e5\u3059\u308b\u306b\u306f\u3001ssh\u3092\u4f7f\u3063\u305f\u6642\u306b\u74b0\u5883\u5909\u6570\u306b\u63a5\u7d9a\u5143\u306e\u60c5\u5831\u304c\u66f8\u304d\u8fbc\u307e\u308c\u308b\u306e\u3067\u3001\u305d\u308c\u3092\u52a0\u5de5\u3059\u308b\u3002<br \/>\n\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f7f\u3046\u5c02\u9580\u306e\u30e6\u30fc\u30b6\u3092\u4f5c\u3063\u3066\u5b9f\u884c\u3055\u305b\u305f\u65b9\u304c\u3044\u3044\u304b\u3082\u3002<br \/>\n\u4ee5\u4e0b\u3001\u767b\u9332\u7528\u306e\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u3002<\/p>\n<pre>#!\/bin\/sh\r\nCONNECTION_IP=`echo $SSH_CONNECTION | cut -f1 -d \" \"`\r\nCOMMAND_FILE=\"$HOME\/dns_update_command\"\r\nHOST_NAME=\"hoge.maocat.net\"\r\n\r\nif expr \"$CONNECTION_IP\" : \"^[0-9]\\{1,3\\}[.][0-9]\\{1,3\\}[.][0-9]\\{1,3\\}[.][0-9]\\{1,3\\}$\" &gt; \/dev\/null ; then\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DNS_RESULT=`host $HOST_NAME`\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if expr \"$DNS_RESULT\" : \"^Host $HOST_NAME not found\" &gt; \/dev\/null ; then\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo \"update add $HOST_NAME. 3600 in a $CONNECTION_IP\" &gt; $COMMAND_FILE\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo \"\" &gt;&gt; $COMMAND_FILE\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 nsupdate $COMMAND_FILE\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 elif expr \"$DNS_RESULT\" : \"^$HOST_NAME has address\" &gt; \/dev\/null ; then\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo \"update delete $HOST_NAME.\" &gt; $COMMAND_FILE\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo \"update add $HOST_NAME. 3600 in a $CONNECTION_IP\" &gt;&gt; $COMMAND_FILE\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo \"\" &gt;&gt; $COMMAND_FILE\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 nsupdate $COMMAND_FILE\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 fi\r\n\r\nfi<\/pre>\n<p>ssh\u304b\u3089\u63a5\u7d9a\u3057\u3066\u3001\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u884c\u3059\u308c\u3070\u63a5\u7d9a\u3057\u305fIP\u304c\u767b\u9332\u3055\u308c\u307e\u3059\u3002<br \/>\n<a title=\"rsync\u3092\u4f7f\u3063\u3066\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3059\u308b\" href=\"https:\/\/www.maocat.net\/?p=154\">\u3053\u3053<\/a>\u3092\u53c2\u8003\u306b\u3057\u3066\u3001\u6697\u53f7\u9375\u3067\u306e\u63a5\u7d9a\u3084\u30b3\u30de\u30f3\u30c9\u5236\u9650\u3092\u99c6\u4f7f\u3059\u308c\u3070\u3001cron\u3067\u306e\u81ea\u52d5\u5316\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5411\u4e0a\u304c\u51fa\u6765\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u56fa\u5b9aIP\u3092\u6b62\u3081\u3066\u5916\u90e8\u306b\u9bd6\u3092\u501f\u308a\u3066\u3057\u307e\u3063\u305f\u70ba\u3001\u81ea\u5b85\u306eIP\u3092\u4f7f\u3046\u6642\u306b\u8272\u3005\u3068\u9762\u5012\u306a\u4f5c\u696d\u304c\u767a\u751f\u3057\u59cb\u3081\u305f\u3002 \u3053\u306e\u4f5c\u696d\u3092\u7c21\u7565\u5316\u3059\u308b\u70ba\u306b\u3001Dynamic DNS\u3092\u4f5c\u308b\u4e8b\u306b\u3057\u305f\u3002 \u4e00\u5fdc\u3001\u4eca\u4f7f\u3063\u3066\u3044\u308b\u30eb\u30fc\u30bf\u306e\u8ca9\u58f2\u5143\u304cDynamic DNS [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[144],"class_list":["post-3939","post","type-post","status-publish","format-standard","hentry","category-2","tag-dns"],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1vAGx-11x","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.maocat.net\/index.php?rest_route=\/wp\/v2\/posts\/3939","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.maocat.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.maocat.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.maocat.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.maocat.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3939"}],"version-history":[{"count":3,"href":"https:\/\/www.maocat.net\/index.php?rest_route=\/wp\/v2\/posts\/3939\/revisions"}],"predecessor-version":[{"id":3943,"href":"https:\/\/www.maocat.net\/index.php?rest_route=\/wp\/v2\/posts\/3939\/revisions\/3943"}],"wp:attachment":[{"href":"https:\/\/www.maocat.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.maocat.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.maocat.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}