{"id":2278,"date":"2025-03-24T08:47:48","date_gmt":"2025-03-23T23:47:48","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2278"},"modified":"2025-03-24T08:48:13","modified_gmt":"2025-03-23T23:48:13","slug":"%e3%80%90%e4%bf%9d%e5%ad%98%e7%89%88%e3%80%91terraform%e3%81%aefor_each%e3%82%92%e5%ae%8c%e5%85%a8%e8%a7%a3%e8%aa%ac%ef%bc%817%e3%81%a4%e3%81%ae%e5%ae%9f%e8%b7%b5%e7%9a%84%e3%83%a6%e3%83%bc%e3%82%b9","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2278","title":{"rendered":"\u3010\u4fdd\u5b58\u7248\u3011Terraform\u306efor_each\u3092\u5b8c\u5168\u89e3\u8aac\uff017\u3064\u306e\u5b9f\u8df5\u7684\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">Terraform\u306efor_each\u3068\u306f\uff1f\u521d\u5fc3\u8005\u306b\u3082\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">for_each\u306e\u57fa\u672c\u6982\u5ff5\u3068\u52d5\u4f5c\u539f\u7406<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">count\u3068\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051\u30dd\u30a4\u30f3\u30c8<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">for_each\u3092\u4f7f\u3046\u524d\u306b\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u524d\u63d0\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u30de\u30c3\u30d7\u3068\u30bb\u30c3\u30c8\u306e\u57fa\u672c\u7684\u306a\u6271\u3044\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-7\">\u5909\u6570\u5b9a\u7fa9\u3068\u30ed\u30fc\u30ab\u30eb\u5024\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-10\">\u5b9f\u8df5\u3067\u4f7f\u3048\u308bfor_each\u306e7\u3064\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-11\">\u8907\u6570\u306eIAM\u30e6\u30fc\u30b6\u30fc\u3092\u4e00\u62ec\u4f5c\u6210\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-12\">\u74b0\u5883\u3054\u3068\u306b\u7570\u306a\u308bEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u7ba1\u7406\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-13\">\u8907\u6570\u306eS3\u30d0\u30b1\u30c3\u30c8\u306b\u30dd\u30ea\u30b7\u30fc\u3092\u9069\u7528\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-14\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u306e\u30eb\u30fc\u30eb\u3092\u307e\u3068\u3081\u3066\u8a2d\u5b9a\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-15\">\u30bf\u30b0\u4ed8\u3051\u3092\u52b9\u7387\u7684\u306b\u884c\u3046<\/a>      <\/li>      <li>        <a href=\"#i-16\">\u8907\u6570\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u3092\u7570\u306a\u308bAZ\u306b\u5c55\u958b\u3059\u308b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-17\">CloudWatch\u30a2\u30e9\u30fc\u30e0\u3092\u4e00\u62ec\u8a2d\u5b9a\u3059\u308b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-18\">for_each\u4f7f\u7528\u6642\u306e\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u5bfe\u51e6\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-19\">\u578b\u306e\u4e0d\u4e00\u81f4\u306b\u3088\u308b\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-22\">\u4f9d\u5b58\u95a2\u4fc2\u30a8\u30e9\u30fc\u3078\u306e\u5bfe\u51e6\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-25\">for_each\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-26\">\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u547d\u540d\u898f\u5247<\/a>      <\/li>      <li>        <a href=\"#i-29\">\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u3092\u8003\u616e\u3057\u305f\u69cb\u9020\u5316<\/a>      <\/li>      <li>        <a href=\"#i-32\">\u30c6\u30b9\u30c8\u65b9\u6cd5\u3068\u30c7\u30d0\u30c3\u30b0\u306e\u30b3\u30c4<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-35\">\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-36\">\u767a\u5c55\u7684\u306afor_each\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-37\">\u30e2\u30b8\u30e5\u30fc\u30eb\u5185\u3067\u306efor_each\u306e\u4f7f\u3044\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-40\">\u52d5\u7684\u30d6\u30ed\u30c3\u30af\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-44\">\u307e\u3068\u3081\uff1afor_each\u3067\u5b9f\u73fe\u3059\u308b\u52b9\u7387\u7684\u306a\u30a4\u30f3\u30d5\u30e9\u7ba1\u7406<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-45\">for_each\u6d3b\u7528\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-48\">\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3068\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">Terraform\u306efor_each\u3068\u306f\uff1f\u521d\u5fc3\u8005\u306b\u3082\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">for_each\u306e\u57fa\u672c\u6982\u5ff5\u3068\u52d5\u4f5c\u539f\u7406<\/h3>\n\n\n\n<p>Terraform\u306efor_each\u306f\u3001\u540c\u3058\u30ea\u30bd\u30fc\u30b9\u3092\u8907\u6570\u4f5c\u6210\u3059\u308b\u969b\u306b\u4f7f\u7528\u3059\u308b\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3059\u3002\u30de\u30c3\u30d7\uff08\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\uff09\u307e\u305f\u306f\u30bb\u30c3\u30c8\uff08\u30e6\u30cb\u30fc\u30af\u306a\u5024\u306e\u96c6\u5408\uff09\u3092\u5143\u306b\u3001\u30ea\u30bd\u30fc\u30b9\u3084\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u52d5\u7684\u306b\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>for_each\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">resource \"aws_instance\" \"server\" {\n  for_each = toset([\"web\", \"app\", \"db\"])\n\n  ami           = \"ami-0c55b159cbfafe1f0\"\n  instance_type = \"t2.micro\"\n\n  tags = {\n    Name = \"server-${each.value}\"\n  }\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u3067\u306f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>for_each = toset([\"web\", \"app\", \"db\"])<\/code>: 3\u3064\u306e\u7570\u306a\u308b\u30b5\u30fc\u30d0\u30fc\u3092\u4f5c\u6210<\/li>\n\n\n\n<li><code>each.value<\/code>: \u73fe\u5728\u306e\u8981\u7d20\u306e\u5024\u3092\u53c2\u7167\uff08\u3053\u306e\u5834\u5408\u306f\u201dweb\u201d\u3001\u201dapp\u201d\u3001\u201ddb\u201d\uff09<\/li>\n\n\n\n<li><code>each.key<\/code>: \u30bb\u30c3\u30c8\u306e\u5834\u5408\u3001value\u3068\u540c\u3058\u5024\u3002\u30de\u30c3\u30d7\u306e\u5834\u5408\u306f\u30ad\u30fc\u306e\u5024\u3092\u53c2\u7167<\/li>\n<\/ul>\n\n\n\n<p>for_each\u306e\u7279\u5fb4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u5b89\u5168\u6027<\/strong>: \u5b9f\u884c\u524d\u306b\u8981\u7d20\u306e\u5b58\u5728\u304c\u4fdd\u8a3c\u3055\u308c\u308b<\/li>\n\n\n\n<li><strong>\u8b58\u5225\u5b50\u306e\u660e\u78ba\u3055<\/strong>: \u5404\u30ea\u30bd\u30fc\u30b9\u304c\u4e00\u610f\u306e\u8b58\u5225\u5b50\u3092\u6301\u3064<\/li>\n\n\n\n<li><strong>\u67d4\u8edf\u306a\u66f4\u65b0<\/strong>: \u500b\u5225\u306e\u30ea\u30bd\u30fc\u30b9\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u304c\u5bb9\u6613<\/li>\n\n\n\n<li><strong>\u4f9d\u5b58\u95a2\u4fc2\u306e\u7ba1\u7406<\/strong>: \u30ea\u30bd\u30fc\u30b9\u9593\u306e\u4f9d\u5b58\u95a2\u4fc2\u304c\u660e\u78ba<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">count\u3068\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<p>for_each\u3068count\u306f\u3001\u3069\u3061\u3089\u3082\u8907\u6570\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u304c\u3001\u91cd\u8981\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n<div id=\"id-b25c2918-e750-4081-ac79-c8e6af69434b\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6a5f\u80fd<\/th><th>for_each<\/th><th>count<\/th><\/tr><\/thead><tbody><tr><td>\u8b58\u5225\u5b50<\/td><td>\u30ad\u30fc\u30d9\u30fc\u30b9\uff08\u660e\u78ba\uff09<\/td><td>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30d9\u30fc\u30b9\uff08\u4f4d\u7f6e\u4f9d\u5b58\uff09<\/td><\/tr><tr><td>\u8981\u7d20\u306e\u8ffd\u52a0\u30fb\u524a\u9664<\/td><td>\u4ed6\u306e\u8981\u7d20\u306b\u5f71\u97ff\u306a\u3057<\/td><td>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u305a\u308c\u308b\u53ef\u80fd\u6027\u3042\u308a<\/td><\/tr><tr><td>\u9069\u3057\u3066\u3044\u308b\u7528\u9014<\/td><td>\u500b\u5225\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u306a\u30ea\u30bd\u30fc\u30b9<\/td><td>\u540c\u4e00\u8a2d\u5b9a\u306e\u7e70\u308a\u8fd4\u3057<\/td><\/tr><tr><td>\u5024\u306e\u53c2\u7167\u65b9\u6cd5<\/td><td>each.key, each.value<\/td><td>count.index<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u5177\u4f53\u7684\u306a\u4f7f\u3044\u5206\u3051\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># for_each\u304c\u9069\u3057\u3066\u3044\u308b\u4f8b\uff08\u7570\u306a\u308b\u8a2d\u5b9a\u306eEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff09\nresource \"aws_instance\" \"servers\" {\n  for_each = {\n    web = {\n      type = \"t2.micro\"\n      zone = \"ap-northeast-1a\"\n    }\n    app = {\n      type = \"t2.small\"\n      zone = \"ap-northeast-1b\"\n    }\n  }\n\n  ami               = \"ami-0c55b159cbfafe1f0\"\n  instance_type     = each.value.type\n  availability_zone = each.value.zone\n\n  tags = {\n    Name = \"server-${each.key}\"\n  }\n}\n\n# count\u304c\u9069\u3057\u3066\u3044\u308b\u4f8b\uff08\u540c\u4e00\u8a2d\u5b9a\u306e\u8907\u6570\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff09\nresource \"aws_instance\" \"workers\" {\n  count = 3\n\n  ami           = \"ami-0c55b159cbfafe1f0\"\n  instance_type = \"t2.micro\"\n\n  tags = {\n    Name = \"worker-${count.index + 1}\"\n  }\n}<\/pre>\n\n\n\n<p>for_each\u3092\u4f7f\u3046\u3079\u304d\u72b6\u6cc1\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ea\u30bd\u30fc\u30b9\u3054\u3068\u306b\u7570\u306a\u308b\u8a2d\u5b9a\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u304c\u983b\u7e41\u306b\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u9593\u306e\u4f9d\u5b58\u95a2\u4fc2\u304c\u8907\u96d1\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u8a2d\u5b9a\u5024\u3092\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3067\u7ba1\u7406\u3057\u305f\u3044\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p>count\u3092\u4f7f\u3046\u3079\u304d\u72b6\u6cc1\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b8c\u5168\u306b\u540c\u4e00\u306e\u8a2d\u5b9a\u3067\u8907\u6570\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u4f5c\u6210\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u5358\u7d14\u306a\u9023\u756a\u3067\u306e\u8b58\u5225\u3067\u5341\u5206\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u306e\u6570\u304c\u56fa\u5b9a\u7684\u3067\u3001\u5909\u66f4\u304c\u5c11\u306a\u3044\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u57fa\u672c\u7684\u306a\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">for_each\u3092\u4f7f\u3046\u524d\u306b\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u524d\u63d0\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u30de\u30c3\u30d7\u3068\u30bb\u30c3\u30c8\u306e\u57fa\u672c\u7684\u306a\u6271\u3044\u65b9<\/h3>\n\n\n\n<p>for_each\u3092\u52b9\u679c\u7684\u306b\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b\u306f\u3001Terraform\u306b\u304a\u3051\u308b\u30de\u30c3\u30d7\uff08map\uff09\u3068\u30bb\u30c3\u30c8\uff08set\uff09\u306e\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-5\">\u30de\u30c3\u30d7\uff08Map\uff09\u306e\u57fa\u672c<\/h4>\n\n\n\n<p>\u30de\u30c3\u30d7\u306f\u3001\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u6301\u3064\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u30de\u30c3\u30d7\u306e\u57fa\u672c\u7684\u306a\u5b9a\u7fa9\nvariable \"instance_configs\" {\n  type = map(object({\n    instance_type = string\n    subnet_id     = string\n    environment   = string\n  }))\n\n  default = {\n    \"web\" = {\n      instance_type = \"t2.micro\"\n      subnet_id     = \"subnet-123\"\n      environment   = \"prod\"\n    }\n    \"app\" = {\n      instance_type = \"t2.small\"\n      subnet_id     = \"subnet-456\"\n      environment   = \"prod\"\n    }\n  }\n}\n\n# \u30de\u30c3\u30d7\u306e\u5024\u3078\u306e\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\nlocals {\n  web_instance_type = var.instance_configs[\"web\"].instance_type\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-6\">\u30bb\u30c3\u30c8\uff08Set\uff09\u306e\u57fa\u672c<\/h4>\n\n\n\n<p>\u30bb\u30c3\u30c8\u306f\u3001\u91cd\u8907\u306e\u306a\u3044\u5024\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u30bb\u30c3\u30c8\u306e\u5b9a\u7fa9\nvariable \"availability_zones\" {\n  type    = set(string)\n  default = [\"ap-northeast-1a\", \"ap-northeast-1c\", \"ap-northeast-1d\"]\n}\n\n# \u30ea\u30b9\u30c8\u304b\u3089\u30bb\u30c3\u30c8\u3078\u306e\u5909\u63db\nlocals {\n  instance_types = toset([\"t2.micro\", \"t2.small\", \"t2.medium\"])\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u5909\u6570\u5b9a\u7fa9\u3068\u30ed\u30fc\u30ab\u30eb\u5024\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>for_each\u3092\u52b9\u7387\u7684\u306b\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b\u3001\u5909\u6570\u3068\u30ed\u30fc\u30ab\u30eb\u5024\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-8\">\u5909\u6570\u306e\u5b9a\u7fa9\u3068\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u8907\u96d1\u306a\u5909\u6570\u306e\u5b9a\u7fa9\u4f8b\nvariable \"vpc_config\" {\n  type = map(object({\n    cidr_block = string\n    subnets = map(object({\n      cidr_block = string\n      public     = bool\n    }))\n  }))\n\n  # \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u306e\u8ffd\u52a0\n  validation {\n    condition     = can([for vpc in var.vpc_config : cidrhost(vpc.cidr_block, 0)])\n    error_message = \"All VPC CIDR blocks must be valid IPv4 CIDR notations.\"\n  }\n}\n\n# \u4f7f\u7528\u4f8b\nvpc_config = {\n  \"main\" = {\n    cidr_block = \"10.0.0.0\/16\"\n    subnets = {\n      \"public-1\" = {\n        cidr_block = \"10.0.1.0\/24\"\n        public     = true\n      }\n      \"private-1\" = {\n        cidr_block = \"10.0.2.0\/24\"\n        public     = false\n      }\n    }\n  }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-9\">\u30ed\u30fc\u30ab\u30eb\u5024\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528<\/h4>\n\n\n\n<p>\u30ed\u30fc\u30ab\u30eb\u5024\u306f\u3001\u8907\u96d1\u306a\u8a08\u7b97\u3084\u5909\u63db\u3092\u884c\u3046\u969b\u306b\u7279\u306b\u6709\u7528\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  # \u30de\u30c3\u30d7\u306e\u5909\u63db\n  subnet_configs = flatten([\n    for vpc_key, vpc in var.vpc_config : [\n      for subnet_key, subnet in vpc.subnets : {\n        vpc_key     = vpc_key\n        subnet_key  = subnet_key\n        vpc_cidr    = vpc.cidr_block\n        subnet_cidr = subnet.cidr_block\n        public      = subnet.public\n      }\n    ]\n  ])\n\n  # \u30bf\u30b0\u306e\u5171\u901a\u5316\n  common_tags = {\n    Environment = terraform.workspace\n    ManagedBy   = \"terraform\"\n    Project     = \"infrastructure\"\n  }\n\n  # \u6761\u4ef6\u4ed8\u304d\u30de\u30c3\u30d7\u306e\u4f5c\u6210\n  public_subnets = {\n    for k, v in local.subnet_configs : \"${v.vpc_key}-${v.subnet_key}\" =&gt; v\n    if v.public\n  }\n}<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306aTips\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u5b9a\u7fa9\u306e\u660e\u78ba\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5909\u6570\u306b\u306f\u5e38\u306b\u660e\u793a\u7684\u306a\u578b\u5b9a\u7fa9\u3092\u884c\u3046<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u3082\u9069\u5207\u306b\u5b9a\u7fa9\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5165\u529b\u5024\u306e\u691c\u8a3c\u3092\u5909\u6570\u5b9a\u7fa9\u306b\u542b\u3081\u308b<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u660e\u78ba\u306b\u8a18\u8ff0\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30ed\u30fc\u30ab\u30eb\u5024\u306e\u4f7f\u3044\u65b9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u96d1\u306a\u5909\u63db\u306flocals\u30d6\u30ed\u30c3\u30af\u3067\u884c\u3046<\/li>\n\n\n\n<li>\u5171\u901a\u306e\u5024\u3084\u8a08\u7b97\u7d50\u679c\u3092\u518d\u5229\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306e\u6b63\u898f\u5316\u3084\u5909\u63db\u306b\u6d3b\u7528\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u547d\u540d\u898f\u5247\u306e\u7d71\u4e00<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ad\u30fc\u540d\u306f\u4e00\u8cab\u6027\u306e\u3042\u308b\u547d\u540d\u898f\u5247\u306b\u5f93\u3046<\/li>\n\n\n\n<li>\u5206\u304b\u308a\u3084\u3059\u3044\u8b58\u5225\u5b50\u3092\u4f7f\u7528\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u3092\u62bc\u3055\u3048\u308b\u3053\u3068\u3067\u3001for_each\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-10\">\u5b9f\u8df5\u3067\u4f7f\u3048\u308bfor_each\u306e7\u3064\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u8907\u6570\u306eIAM\u30e6\u30fc\u30b6\u30fc\u3092\u4e00\u62ec\u4f5c\u6210\u3059\u308b<\/h3>\n\n\n\n<p>\u958b\u767a\u30c1\u30fc\u30e0\u306eIAM\u30e6\u30fc\u30b6\u30fc\u3092\u52b9\u7387\u7684\u306b\u7ba1\u7406\u3059\u308b\u4f8b\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u958b\u767a\u8005\u306e\u5b9a\u7fa9\nvariable \"developers\" {\n  type = map(object({\n    groups       = list(string)\n    permissions = list(string)\n  }))\n  default = {\n    \"john.doe\" = {\n      groups       = [\"developers\", \"ops\"]\n      permissions = [\"s3:List*\", \"s3:Get*\"]\n    }\n    \"jane.smith\" = {\n      groups       = [\"developers\"]\n      permissions = [\"s3:List*\"]\n    }\n  }\n}\n\n# IAM\u30e6\u30fc\u30b6\u30fc\u306e\u4f5c\u6210\nresource \"aws_iam_user\" \"developers\" {\n  for_each = var.developers\n  name     = each.key\n\n  tags = {\n    Department = \"Engineering\"\n    Role       = join(\",\", each.value.groups)\n  }\n}\n\n# \u30e6\u30fc\u30b6\u30fc\u30dd\u30ea\u30b7\u30fc\u306e\u4f5c\u6210\nresource \"aws_iam_user_policy\" \"developer_permissions\" {\n  for_each = var.developers\n  name     = \"${each.key}-permissions\"\n  user     = aws_iam_user.developers[each.key].name\n\n  policy = jsonencode({\n    Version = \"2012-10-17\"\n    Statement = [\n      {\n        Effect   = \"Allow\"\n        Action   = each.value.permissions\n        Resource = \"*\"\n      }\n    ]\n  })\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u74b0\u5883\u3054\u3068\u306b\u7570\u306a\u308bEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u7ba1\u7406\u3059\u308b<\/h3>\n\n\n\n<p>\u958b\u767a\u3001\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u3001\u672c\u756a\u74b0\u5883\u3067\u7570\u306a\u308b\u8a2d\u5b9a\u306eEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u7ba1\u7406\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  environments = {\n    dev = {\n      instance_type = \"t2.micro\"\n      volume_size   = 20\n      count         = 1\n    }\n    staging = {\n      instance_type = \"t2.small\"\n      volume_size   = 30\n      count         = 2\n    }\n    prod = {\n      instance_type = \"t2.medium\"\n      volume_size   = 50\n      count         = 3\n    }\n  }\n\n  # \u74b0\u5883\u3054\u3068\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u8a2d\u5b9a\u3092\u5c55\u958b\n  instance_configs = merge([\n    for env_name, env in local.environments : {\n      for idx in range(env.count) : \"${env_name}-${idx + 1}\" =&gt; {\n        instance_type = env.instance_type\n        volume_size   = env.volume_size\n        environment   = env_name\n      }\n    }\n  ]...)\n}\n\nresource \"aws_instance\" \"app_servers\" {\n  for_each = local.instance_configs\n\n  ami           = \"ami-0c55b159cbfafe1f0\"\n  instance_type = each.value.instance_type\n\n  root_block_device {\n    volume_size = each.value.volume_size\n  }\n\n  tags = {\n    Name        = \"app-${each.key}\"\n    Environment = each.value.environment\n  }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u8907\u6570\u306eS3\u30d0\u30b1\u30c3\u30c8\u306b\u30dd\u30ea\u30b7\u30fc\u3092\u9069\u7528\u3059\u308b<\/h3>\n\n\n\n<p>\u7570\u306a\u308b\u7528\u9014\u306eS3\u30d0\u30b1\u30c3\u30c8\u306b\u9069\u5207\u306a\u30dd\u30ea\u30b7\u30fc\u3092\u4e00\u62ec\u3067\u9069\u7528\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  bucket_policies = {\n    logs = {\n      name = \"app-logs\"\n      statements = [\n        {\n          effect    = \"Allow\"\n          actions   = [\"s3:PutObject\"]\n          principals = [\"arn:aws:iam::${data.aws_caller_identity.current.account_id}:root\"]\n        }\n      ]\n    }\n    backup = {\n      name = \"app-backup\"\n      statements = [\n        {\n          effect    = \"Deny\"\n          actions   = [\"s3:DeleteObject\"]\n          principals = [\"*\"]\n        }\n      ]\n    }\n  }\n}\n\nresource \"aws_s3_bucket\" \"buckets\" {\n  for_each = local.bucket_policies\n  bucket   = each.value.name\n}\n\nresource \"aws_s3_bucket_policy\" \"policies\" {\n  for_each = local.bucket_policies\n  bucket   = aws_s3_bucket.buckets[each.key].id\n\n  policy = jsonencode({\n    Version = \"2012-10-17\"\n    Statement = each.value.statements\n  })\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u306e\u30eb\u30fc\u30eb\u3092\u307e\u3068\u3081\u3066\u8a2d\u5b9a\u3059\u308b<\/h3>\n\n\n\n<p>\u8907\u6570\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u30eb\u30fc\u30eb\u3092\u52b9\u7387\u7684\u306b\u7ba1\u7406\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  security_rules = {\n    http = {\n      description = \"HTTP access\"\n      from_port   = 80\n      to_port     = 80\n      protocol    = \"tcp\"\n      cidr_blocks = [\"0.0.0.0\/0\"]\n    }\n    https = {\n      description = \"HTTPS access\"\n      from_port   = 443\n      to_port     = 443\n      protocol    = \"tcp\"\n      cidr_blocks = [\"0.0.0.0\/0\"]\n    }\n    ssh = {\n      description = \"SSH access\"\n      from_port   = 22\n      to_port     = 22\n      protocol    = \"tcp\"\n      cidr_blocks = [\"10.0.0.0\/8\"]\n    }\n  }\n}\n\nresource \"aws_security_group\" \"web\" {\n  name_prefix = \"web-\"\n  vpc_id      = var.vpc_id\n\n  dynamic \"ingress\" {\n    for_each = local.security_rules\n    content {\n      description = ingress.value.description\n      from_port   = ingress.value.from_port\n      to_port     = ingress.value.to_port\n      protocol    = ingress.value.protocol\n      cidr_blocks = ingress.value.cidr_blocks\n    }\n  }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u30bf\u30b0\u4ed8\u3051\u3092\u52b9\u7387\u7684\u306b\u884c\u3046<\/h3>\n\n\n\n<p>\u30ea\u30bd\u30fc\u30b9\u3078\u306e\u4e00\u8cab\u3057\u305f\u30bf\u30b0\u4ed8\u3051\u3092\u5b9f\u73fe\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  common_tags = {\n    Project     = \"MyApp\"\n    Environment = terraform.workspace\n    ManagedBy   = \"Terraform\"\n  }\n\n  resource_tags = {\n    ec2 = merge(local.common_tags, {\n      Type = \"Compute\"\n    })\n    rds = merge(local.common_tags, {\n      Type = \"Database\"\n    })\n    s3 = merge(local.common_tags, {\n      Type = \"Storage\"\n    })\n  }\n}\n\nresource \"aws_instance\" \"servers\" {\n  for_each = toset([\"web\", \"app\"])\n\n  ami           = \"ami-0c55b159cbfafe1f0\"\n  instance_type = \"t2.micro\"\n\n  tags = merge(\n    local.resource_tags[\"ec2\"],\n    {\n      Name = \"server-${each.key}\"\n    }\n  )\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u8907\u6570\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u3092\u7570\u306a\u308bAZ\u306b\u5c55\u958b\u3059\u308b<\/h3>\n\n\n\n<p>VPC\u5185\u306b\u8907\u6570\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u3092\u52b9\u7387\u7684\u306b\u4f5c\u6210\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">data \"aws_availability_zones\" \"available\" {\n  state = \"available\"\n}\n\nlocals {\n  vpc_cidr = \"10.0.0.0\/16\"\n\n  subnet_configs = {\n    for idx, az in data.aws_availability_zones.available.names : \"subnet-${idx + 1}\" =&gt; {\n      az         = az\n      cidr_block = cidrsubnet(local.vpc_cidr, 8, idx)\n      public     = idx &lt; 3  # \u6700\u521d\u306e3\u3064\u3092\u516c\u958b\u30b5\u30d6\u30cd\u30c3\u30c8\u306b\n    }\n  }\n}\n\nresource \"aws_subnet\" \"subnets\" {\n  for_each = local.subnet_configs\n\n  vpc_id            = aws_vpc.main.id\n  cidr_block        = each.value.cidr_block\n  availability_zone = each.value.az\n\n  map_public_ip_on_launch = each.value.public\n\n  tags = {\n    Name   = each.key\n    Type   = each.value.public ? \"Public\" : \"Private\"\n    AZ     = each.value.az\n  }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">CloudWatch\u30a2\u30e9\u30fc\u30e0\u3092\u4e00\u62ec\u8a2d\u5b9a\u3059\u308b<\/h3>\n\n\n\n<p>\u8907\u6570\u306e\u30e1\u30c8\u30ea\u30af\u30b9\u306b\u5bfe\u3057\u3066\u30a2\u30e9\u30fc\u30e0\u3092\u8a2d\u5b9a\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  alarm_configs = {\n    cpu_high = {\n      metric_name = \"CPUUtilization\"\n      namespace   = \"AWS\/EC2\"\n      period      = 300\n      threshold   = 80\n      comparison_operator = \"GreaterThanThreshold\"\n      evaluation_periods = 2\n    }\n    memory_high = {\n      metric_name = \"MemoryUtilization\"\n      namespace   = \"System\/Linux\"\n      period      = 300\n      threshold   = 75\n      comparison_operator = \"GreaterThanThreshold\"\n      evaluation_periods = 2\n    }\n    disk_low = {\n      metric_name = \"DiskSpaceUtilization\"\n      namespace   = \"System\/Linux\"\n      period      = 300\n      threshold   = 20\n      comparison_operator = \"LessThanThreshold\"\n      evaluation_periods = 1\n    }\n  }\n}\n\nresource \"aws_cloudwatch_metric_alarm\" \"alarms\" {\n  for_each = local.alarm_configs\n\n  alarm_name          = \"alarm-${each.key}\"\n  metric_name         = each.value.metric_name\n  namespace           = each.value.namespace\n  period              = each.value.period\n  threshold           = each.value.threshold\n  comparison_operator = each.value.comparison_operator\n  evaluation_periods  = each.value.evaluation_periods\n  statistic          = \"Average\"\n\n  alarm_description = \"Alert when ${each.key} condition is met\"\n  alarm_actions     = [aws_sns_topic.alerts.arn]\n\n  dimensions = {\n    InstanceId = aws_instance.main.id\n  }\n}<\/pre>\n\n\n\n<p>\u5404\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>IAM\u30e6\u30fc\u30b6\u30fc\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e6\u30fc\u30b6\u30fc\u3054\u3068\u306e\u6a29\u9650\u3092\u67d4\u8edf\u306b\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u30b0\u30eb\u30fc\u30d7\u6240\u5c5e\u3082\u542b\u3081\u305f\u4e00\u62ec\u7ba1\u7406\u304c\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u74b0\u5883\u5225EC2\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u74b0\u5883\u3054\u3068\u306e\u8981\u4ef6\u306b\u5fdc\u3058\u305f\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u304c\u5bb9\u6613<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>S3\u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7528\u9014\u306b\u5fdc\u3058\u305f\u7d30\u304b\u3044\u6a29\u9650\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u30dd\u30ea\u30b7\u30fc\u306e\u4e00\u5143\u7ba1\u7406<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30eb\u30fc\u30eb\u306e\u8996\u8a8d\u6027\u304c\u9ad8\u3044<\/li>\n\n\n\n<li>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u5bb9\u6613<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30bf\u30b0\u4ed8\u3051<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u8cab\u6027\u306e\u3042\u308b\u547d\u540d<\/li>\n\n\n\n<li>\u7ba1\u7406\u306e\u3057\u3084\u3059\u3055<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b5\u30d6\u30cd\u30c3\u30c8\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>AZ\u306e\u81ea\u52d5\u691c\u51fa<\/li>\n\n\n\n<li>CIDR\u306e\u81ea\u52d5\u8a08\u7b97<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>CloudWatch\u30a2\u30e9\u30fc\u30e0<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u76e3\u8996\u8a2d\u5b9a\u306e\u4e00\u62ec\u7ba1\u7406<\/li>\n\n\n\n<li>\u30a2\u30e9\u30fc\u30c8\u6761\u4ef6\u306e\u6a19\u6e96\u5316<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306f\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3050\u306b\u6d3b\u7528\u3067\u304d\u308b\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-18\">for_each\u4f7f\u7528\u6642\u306e\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u578b\u306e\u4e0d\u4e00\u81f4\u306b\u3088\u308b\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5<\/h3>\n\n\n\n<p>for_each\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u3088\u304f\u906d\u9047\u3059\u308b\u578b\u95a2\u9023\u306e\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-20\">1. \u201cThe given key does not identify an element in the collection\u201d<\/h4>\n\n\n\n<p>\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3001\u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\u3092\u53c2\u7167\u3057\u3088\u3046\u3068\u3057\u305f\u6642\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u30b3\u30fc\u30c9\nresource \"aws_instance\" \"servers\" {\n  for_each = toset([\"web\", \"app\"])\n  # ...\n}\n\nresource \"aws_route53_record\" \"dns\" {\n  for_each = aws_instance.servers\n  # Error: aws_instance.servers\u306f\u30de\u30c3\u30d7\u578b\u3068\u3057\u3066\u6271\u308f\u308c\u308b\n  name    = \"${each.key}.example.com\"\n  records = [each.value.public_ip]\n  # ...\n}\n\n# \u4fee\u6b63\u5f8c\u306e\u30b3\u30fc\u30c9\nresource \"aws_route53_record\" \"dns\" {\n  for_each = {\n    for k, v in aws_instance.servers : k =&gt; v\n  }\n  name    = \"${each.key}.example.com\"\n  records = [each.value.public_ip]\n  # ...\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-21\">2. \u201cThe \u201cfor_each\u201d value depends on resource attributes\u201d<\/h4>\n\n\n\n<p>\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3001for_each\u3067\u4f7f\u7528\u3059\u308b\u5024\u304c\u4ed6\u306e\u30ea\u30bd\u30fc\u30b9\u306e\u5c5e\u6027\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u30b3\u30fc\u30c9\nresource \"aws_instance\" \"servers\" {\n  count = 2\n  # ...\n}\n\nresource \"aws_eip\" \"ips\" {\n  for_each = toset([\n    for instance in aws_instance.servers : instance.id\n  ])\n  # Error: count\u3067\u4f5c\u6210\u3057\u305f\u30ea\u30bd\u30fc\u30b9\u306f\u914d\u5217\u3068\u3057\u3066\u6271\u308f\u308c\u308b\n  instance = each.value\n}\n\n# \u4fee\u6b63\u5f8c\u306e\u30b3\u30fc\u30c9\nresource \"aws_instance\" \"servers\" {\n  for_each = toset([\"server-1\", \"server-2\"])\n  # ...\n}\n\nresource \"aws_eip\" \"ips\" {\n  for_each = aws_instance.servers\n  instance = each.value.id\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u4f9d\u5b58\u95a2\u4fc2\u30a8\u30e9\u30fc\u3078\u306e\u5bfe\u51e6\u65b9\u6cd5<\/h3>\n\n\n\n<p>for_each\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u4f9d\u5b58\u95a2\u4fc2\u306b\u95a2\u9023\u3059\u308b\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-23\">1. \u5faa\u74b0\u53c2\u7167\u306e\u56de\u907f<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u30b3\u30fc\u30c9\nlocals {\n  instance_ips = {\n    for k, v in aws_instance.servers : k =&gt; aws_eip.ips[k].public_ip\n  }\n}\n\nresource \"aws_instance\" \"servers\" {\n  for_each = toset([\"web\", \"app\"])\n  # ...\n  tags = {\n    PublicIP = local.instance_ips[each.key] # \u5faa\u74b0\u53c2\u7167\u30a8\u30e9\u30fc\n  }\n}\n\nresource \"aws_eip\" \"ips\" {\n  for_each = aws_instance.servers\n  instance = each.value.id\n}\n\n# \u4fee\u6b63\u5f8c\u306e\u30b3\u30fc\u30c9\n# \u4f9d\u5b58\u95a2\u4fc2\u3092\u660e\u78ba\u306b\u5206\u96e2\nresource \"aws_instance\" \"servers\" {\n  for_each = toset([\"web\", \"app\"])\n  # ...\n}\n\nresource \"aws_eip\" \"ips\" {\n  for_each = aws_instance.servers\n  instance = each.value.id\n}\n\n# \u5225\u306e\u30ea\u30bd\u30fc\u30b9\u3067\u30bf\u30b0\u3092\u66f4\u65b0\nresource \"aws_ec2_tag\" \"instance_ip_tags\" {\n  for_each = aws_eip.ips\n\n  resource_id = aws_instance.servers[each.key].id\n  key         = \"PublicIP\"\n  value       = each.value.public_ip\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-24\">2. \u6761\u4ef6\u4ed8\u304d\u30ea\u30bd\u30fc\u30b9\u4f5c\u6210\u6642\u306e\u6ce8\u610f\u70b9<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u30b3\u30fc\u30c9\nlocals {\n  create_instances = true\n  instances = local.create_instances ? {\n    for k, v in var.instance_configs : k =&gt; v\n  } : {}\n}\n\nresource \"aws_instance\" \"servers\" {\n  for_each = local.instances\n  # ...\n}\n\nresource \"aws_eip\" \"ips\" {\n  for_each = aws_instance.servers # \u30a8\u30e9\u30fc\uff1a\u6761\u4ef6\u8a55\u4fa1\u304c\u5fc5\u8981\n  instance = each.value.id\n}\n\n# \u4fee\u6b63\u5f8c\u306e\u30b3\u30fc\u30c9\nlocals {\n  create_instances = true\n  instances = local.create_instances ? {\n    for k, v in var.instance_configs : k =&gt; v\n  } : {}\n}\n\nresource \"aws_instance\" \"servers\" {\n  for_each = local.instances\n  # ...\n}\n\nresource \"aws_eip\" \"ips\" {\n  for_each = local.create_instances ? aws_instance.servers : {}\n  instance = each.value.id\n}<\/pre>\n\n\n\n<p>\u30a8\u30e9\u30fc\u89e3\u6c7a\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u30c1\u30a7\u30c3\u30af\u306e\u5fb9\u5e95<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5909\u6570\u5b9a\u7fa9\u6642\u306b\u660e\u793a\u7684\u306a\u578b\u6307\u5b9a\u3092\u884c\u3046<\/li>\n\n\n\n<li><code>terraform console<\/code>\u3092\u4f7f\u7528\u3057\u3066\u578b\u3092\u78ba\u8a8d\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">variable \"instance_configs\" {\n  type = map(object({\n    instance_type = string\n    volume_size   = number\n  }))\n\n  validation {\n    condition     = length(var.instance_configs) &gt; 0\n    error_message = \"instance_configs must not be empty\"\n  }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30c7\u30d0\u30c3\u30b0\u7528\u306e\u51fa\u529b<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>locals \u30d6\u30ed\u30c3\u30af\u3067\u4e2d\u9593\u5024\u3092\u78ba\u8a8d<\/li>\n\n\n\n<li>output \u3067\u5024\u3092\u8868\u793a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  debug_instance_ids = {\n    for k, v in aws_instance.servers : k =&gt; v.id\n  }\n}\n\noutput \"debug_info\" {\n  value = {\n    instance_ids = local.debug_instance_ids\n    eip_configs  = aws_eip.ips\n  }\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u4f9d\u5b58\u95a2\u4fc2\u306e\u660e\u793a\u7684\u306a\u5b9a\u7fa9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>depends_on<\/code>\u3092\u4f7f\u7528\u3057\u3066\u4f9d\u5b58\u95a2\u4fc2\u3092\u660e\u78ba\u306b\u3059\u308b<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u306e\u53c2\u7167\u3092\u9069\u5207\u306b\u8a2d\u8a08\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">resource \"aws_route53_record\" \"dns\" {\n  for_each = aws_instance.servers\n\n  depends_on = [aws_eip.ips]\n\n  name    = \"${each.key}.example.com\"\n  records = [aws_eip.ips[each.key].public_ip]\n  # ...\n}<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u6bb5\u968e\u7684\u306a\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5927\u304d\u306a\u5909\u66f4\u306f\u5c0f\u3055\u306a\u5358\u4f4d\u306b\u5206\u5272<\/li>\n\n\n\n<li><code>terraform plan<\/code>\u3067\u5404\u6bb5\u968e\u306e\u5909\u66f4\u3092\u78ba\u8a8d<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30a8\u30e9\u30fc\u5bfe\u51e6\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001for_each\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u30a4\u30f3\u30d5\u30e9\u7ba1\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-25\">for_each\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u547d\u540d\u898f\u5247<\/h3>\n\n\n\n<p>\u52b9\u7387\u7684\u306afor_each\u306e\u4f7f\u7528\u306b\u306f\u3001\u9069\u5207\u306a\u547d\u540d\u898f\u5247\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-27\">1. \u5909\u6570\u3068\u30ed\u30fc\u30ab\u30eb\u5024\u306e\u547d\u540d<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u63a8\u5968\u3055\u308c\u308b\u547d\u540d\u30d1\u30bf\u30fc\u30f3\nlocals {\n  # \u8907\u6570\u5f62\u3067\u914d\u5217\u3084\u30de\u30c3\u30d7\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\n  instance_configs = {\n    web = {\n      type = \"t2.micro\"\n      tags = local.web_tags\n    }\n  }\n\n  # \u7528\u9014\u3092\u660e\u78ba\u306b\u793a\u3059\u63a5\u5c3e\u8f9e\n  instance_config_map   = { ... }  # \u30de\u30c3\u30d7\u578b\n  instance_config_set   = [ ... ]  # \u30bb\u30c3\u30c8\u578b\n  instance_config_list  = [ ... ]  # \u30ea\u30b9\u30c8\u578b\n\n  # \u5909\u63db\u3084\u52a0\u5de5\u3092\u793a\u3059\u52d5\u8a5e\u3092\u542b\u3081\u308b\n  normalized_configs = {\n    for k, v in var.instance_configs :\n    lower(k) =&gt; merge(v, local.default_config)\n  }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-28\">2. \u30ea\u30bd\u30fc\u30b9\u30d6\u30ed\u30c3\u30af\u5185\u306e\u53c2\u7167<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u610f\u56f3\u304c\u660e\u78ba\u306a\u5909\u6570\u540d\u3092\u4f7f\u7528\nresource \"aws_instance\" \"servers\" {\n  for_each = local.instance_configs\n\n  # \u30ad\u30fc\u306e\u7528\u9014\u3092\u660e\u78ba\u306b\n  name = \"server-${each.key}\"\n\n  # \u5024\u306e\u53c2\u7167\u306f\u660e\u793a\u7684\u306b\n  instance_type = each.value.type\n\n  # \u30cd\u30b9\u30c8\u3055\u308c\u305f\u5024\u306f\u4e00\u6642\u5909\u6570\u306b\u683c\u7d0d\n  dynamic \"ebs_block_device\" {\n    for_each = each.value.volumes\n    iterator = volume  # \u610f\u5473\u306e\u3042\u308b\u53cd\u5fa9\u5b50\u540d\n    content {\n      device_name = volume.value.name\n      volume_size = volume.value.size\n    }\n  }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-29\">\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u3092\u8003\u616e\u3057\u305f\u69cb\u9020\u5316<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-30\">1. \u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u3068\u30c7\u30fc\u30bf\u306e\u5206\u96e2<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u8a2d\u5b9a\u30c7\u30fc\u30bf\u3092\u5225\u30d5\u30a1\u30a4\u30eb\u3067\u7ba1\u7406\n# terraform.tfvars\nenvironment_configs = {\n  dev = {\n    instance_type = \"t2.micro\"\n    volume_size   = 20\n  }\n  prod = {\n    instance_type = \"t2.large\"\n    volume_size   = 100\n  }\n}\n\n# variables.tf\nvariable \"environment_configs\" {\n  type = map(object({\n    instance_type = string\n    volume_size   = number\n  }))\n  description = \"Environment-specific configurations\"\n}\n\n# main.tf\nmodule \"environment\" {\n  for_each = var.environment_configs\n  source   = \".\/modules\/environment\"\n\n  instance_type = each.value.instance_type\n  volume_size   = each.value.volume_size\n  environment   = each.key\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-31\">2. \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3068\u4e0a\u66f8\u304d\u306e\u7ba1\u7406<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  # \u30d9\u30fc\u30b9\u8a2d\u5b9a\n  default_config = {\n    instance_type = \"t2.micro\"\n    volume_size   = 20\n    tags = {\n      ManagedBy = \"terraform\"\n    }\n  }\n\n  # \u74b0\u5883\u56fa\u6709\u306e\u8a2d\u5b9a\n  environment_specific = {\n    dev = {\n      instance_type = \"t2.small\"\n    }\n    prod = {\n      instance_type = \"t2.large\"\n      volume_size   = 100\n    }\n  }\n\n  # \u8a2d\u5b9a\u306e\u30de\u30fc\u30b8\n  final_configs = {\n    for env, config in local.environment_specific :\n    env =&gt; merge(local.default_config, config)\n  }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-32\">\u30c6\u30b9\u30c8\u65b9\u6cd5\u3068\u30c7\u30d0\u30c3\u30b0\u306e\u30b3\u30c4<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-33\">1. \u6bb5\u968e\u7684\u306a\u30c6\u30b9\u30c8\u65b9\u6cd5<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u30c6\u30b9\u30c8\u7528\u306e\u51fa\u529b\u5b9a\u7fa9\noutput \"debug_configs\" {\n  value = {\n    raw_configs     = var.environment_configs\n    merged_configs  = local.final_configs\n    instance_ids    = { for k, v in aws_instance.servers : k =&gt; v.id }\n  }\n}\n\n# \u6761\u4ef6\u4ed8\u304d\u30ea\u30bd\u30fc\u30b9\u4f5c\u6210\u3067\u306e\u30c6\u30b9\u30c8\nlocals {\n  is_testing = terraform.workspace == \"test\"\n\n  test_configs = local.is_testing ? {\n    test = local.final_configs[\"dev\"]\n  } : local.final_configs\n}\n\nresource \"aws_instance\" \"servers\" {\n  for_each = local.test_configs\n  # ...\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-34\">2. \u30c7\u30d0\u30c3\u30b0\u7528\u306e\u4e00\u6642\u5909\u6570<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  # \u30c7\u30d0\u30c3\u30b0\u7528\u306e\u4e2d\u9593\u30c7\u30fc\u30bf\n  debug = {\n    normalized_keys = [for k in keys(var.configs) : lower(k)]\n    value_types    = { for k, v in var.configs : k =&gt; type(v) }\n    null_values    = { for k, v in var.configs : k =&gt; v if v == null }\n  }\n}\n\n# terraform console\u3067\u306e\u78ba\u8a8d\u7528\noutput \"debug_info\" {\n  value = local.debug\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-35\">\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u306e\u6b63\u898f\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  # \u30ad\u30fc\u306e\u6b63\u898f\u5316\n  normalized_keys = {\n    for k, v in var.configs :\n    lower(trimspace(k)) =&gt; v\n  }\n\n  # \u5024\u306e\u6b63\u898f\u5316\n  normalized_values = {\n    for k, v in local.normalized_keys :\n    k =&gt; {\n      name = coalesce(v.name, k)\n      type = lower(v.type)\n      size = coalesce(v.size, 0)\n    }\n  }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">variable \"instance_configs\" {\n  type = map(object({\n    type = string\n    size = number\n  }))\n\n  validation {\n    condition = alltrue([\n      for k, v in var.instance_configs : can(regex(\"^[a-z0-9-]+$\", k))\n    ])\n    error_message = \"Keys must contain only lowercase letters, numbers, and hyphens.\"\n  }\n\n  validation {\n    condition = alltrue([\n      for v in var.instance_configs : contains([\"t2.micro\", \"t2.small\", \"t2.medium\"], v.type)\n    ])\n    error_message = \"Instance type must be one of: t2.micro, t2.small, t2.medium\"\n  }\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  # \u5b89\u5168\u306a\u5024\u306e\u53d6\u5f97\n  safe_configs = {\n    for k, v in var.configs :\n    k =&gt; {\n      name = try(v.name, k)\n      type = try(v.type, \"default\")\n      tags = try(v.tags, {})\n    }\n  }\n\n  # \u6761\u4ef6\u4ed8\u304d\u30ea\u30bd\u30fc\u30b9\u4f5c\u6210\n  valid_configs = {\n    for k, v in local.safe_configs :\n    k =&gt; v\n    if can(regex(\"^[a-z0-9-]+$\", k)) &amp;&amp; \n       contains([\"t2.micro\", \"t2.small\", \"t2.medium\"], v.type)\n  }\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u3001\u5b89\u5168\u306aTerraform\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-36\">\u767a\u5c55\u7684\u306afor_each\u306e\u6d3b\u7528\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-37\">\u30e2\u30b8\u30e5\u30fc\u30eb\u5185\u3067\u306efor_each\u306e\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>\u30e2\u30b8\u30e5\u30fc\u30eb\u3067for_each\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u9ad8\u5ea6\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-38\">1. \u518d\u5229\u7528\u53ef\u80fd\u306a\u30de\u30eb\u30c1\u30ea\u30bd\u30fc\u30b9\u30e2\u30b8\u30e5\u30fc\u30eb<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># modules\/application\/variables.tf\nvariable \"environments\" {\n  type = map(object({\n    instance_type     = string\n    min_size         = number\n    max_size         = number\n    subnet_ids       = list(string)\n    security_groups  = list(string)\n  }))\n  description = \"Environment configurations\"\n}\n\n# modules\/application\/main.tf\nresource \"aws_launch_template\" \"app\" {\n  for_each = var.environments\n\n  name_prefix   = \"app-${each.key}\"\n  instance_type = each.value.instance_type\n\n  network_interface {\n    security_groups = each.value.security_groups\n  }\n\n  tags = {\n    Environment = each.key\n  }\n}\n\nresource \"aws_autoscaling_group\" \"app\" {\n  for_each = var.environments\n\n  name                = \"asg-${each.key}\"\n  min_size            = each.value.min_size\n  max_size            = each.value.max_size\n  vpc_zone_identifier = each.value.subnet_ids\n\n  launch_template {\n    id      = aws_launch_template.app[each.key].id\n    version = \"$Latest\"\n  }\n}\n\n# \u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4f7f\u7528\u4f8b\nmodule \"application\" {\n  source = \".\/modules\/application\"\n\n  environments = {\n    dev = {\n      instance_type    = \"t2.micro\"\n      min_size         = 1\n      max_size         = 2\n      subnet_ids       = module.vpc.private_subnets\n      security_groups  = [aws_security_group.app.id]\n    }\n    prod = {\n      instance_type    = \"t2.medium\"\n      min_size         = 2\n      max_size         = 4\n      subnet_ids       = module.vpc.private_subnets\n      security_groups  = [aws_security_group.app.id]\n    }\n  }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-39\">2. \u30ab\u30a6\u30f3\u30c8\u4ed8\u304dfor_each\u306e\u7d44\u307f\u5408\u308f\u305b<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># modules\/multi_az_resources\/variables.tf\nvariable \"configurations\" {\n  type = map(object({\n    instance_count = number\n    instance_type = string\n    zones         = list(string)\n  }))\n}\n\n# modules\/multi_az_resources\/main.tf\nlocals {\n  # \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u8a2d\u5b9a\u3092\u5c55\u958b\n  instance_configs = merge([\n    for env_name, env in var.configurations : {\n      for idx in range(env.instance_count) : \n      \"${env_name}-${idx}\" =&gt; {\n        instance_type = env.instance_type\n        zone         = env.zones[idx % length(env.zones)]\n        environment  = env_name\n      }\n    }\n  ]...)\n}\n\nresource \"aws_instance\" \"multi_az\" {\n  for_each = local.instance_configs\n\n  ami               = data.aws_ami.amazon_linux.id\n  instance_type     = each.value.instance_type\n  availability_zone = each.value.zone\n\n  tags = {\n    Name        = \"instance-${each.key}\"\n    Environment = each.value.environment\n  }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-40\">\u52d5\u7684\u30d6\u30ed\u30c3\u30af\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-41\">1. \u8907\u96d1\u306a\u8a2d\u5b9a\u306e\u52d5\u7684\u751f\u6210<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  lb_configs = {\n    public = {\n      listeners = {\n        http = {\n          port     = 80\n          protocol = \"HTTP\"\n          rules = {\n            main = {\n              path_pattern = [\"\/*\"]\n              priority    = 100\n            }\n            api = {\n              path_pattern = [\"\/api\/*\"]\n              priority    = 200\n            }\n          }\n        }\n        https = {\n          port     = 443\n          protocol = \"HTTPS\"\n          rules = {\n            main = {\n              path_pattern = [\"\/*\"]\n              priority    = 100\n            }\n          }\n        }\n      }\n    }\n  }\n}\n\nresource \"aws_lb\" \"this\" {\n  for_each = local.lb_configs\n  name     = \"${each.key}-lb\"\n  internal = each.key == \"private\"\n}\n\nresource \"aws_lb_listener\" \"this\" {\n  for_each = merge([\n    for lb_key, lb in local.lb_configs : {\n      for listener_key, listener in lb.listeners :\n      \"${lb_key}-${listener_key}\" =&gt; merge(listener, {\n        lb_key = lb_key\n      })\n    }\n  ]...)\n\n  load_balancer_arn = aws_lb.this[each.value.lb_key].arn\n  port              = each.value.port\n  protocol          = each.value.protocol\n\n  dynamic \"default_action\" {\n    for_each = each.value.protocol == \"HTTP\" ? [1] : []\n    content {\n      type = \"redirect\"\n      redirect {\n        port        = \"443\"\n        protocol    = \"HTTPS\"\n        status_code = \"HTTP_301\"\n      }\n    }\n  }\n\n  dynamic \"default_action\" {\n    for_each = each.value.protocol == \"HTTPS\" ? [1] : []\n    content {\n      type             = \"forward\"\n      target_group_arn = aws_lb_target_group.default[each.key].arn\n    }\n  }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-42\">2. \u6761\u4ef6\u4ed8\u304d\u30d6\u30ed\u30c3\u30af\u306e\u751f\u6210<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  instance_configs = {\n    web = {\n      type = \"t2.micro\"\n      ebs_volumes = {\n        data = {\n          size = 50\n          type = \"gp2\"\n        }\n        logs = {\n          size = 20\n          type = \"gp2\"\n        }\n      }\n      enable_monitoring = true\n    }\n    db = {\n      type = \"t2.medium\"\n      ebs_volumes = {\n        data = {\n          size = 100\n          type = \"io1\"\n          iops = 1000\n        }\n      }\n      enable_monitoring = true\n    }\n  }\n}\n\nresource \"aws_instance\" \"servers\" {\n  for_each = local.instance_configs\n\n  ami           = data.aws_ami.amazon_linux.id\n  instance_type = each.value.type\n\n  dynamic \"ebs_block_device\" {\n    for_each = each.value.ebs_volumes\n    content {\n      device_name = \"\/dev\/sd${ebs_block_device.key}\"\n      volume_size = ebs_block_device.value.size\n      volume_type = ebs_block_device.value.type\n\n      dynamic \"iops\" {\n        for_each = try([ebs_block_device.value.iops], [])\n        content {\n          iops = iops.value\n        }\n      }\n    }\n  }\n\n  dynamic \"monitoring\" {\n    for_each = each.value.enable_monitoring ? [true] : []\n    content {\n      enabled = true\n    }\n  }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-43\">3. \u8907\u6570\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3067\u306e\u6d3b\u7528<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">locals {\n  region_configs = {\n    us-east-1 = {\n      cidr_block = \"10.1.0.0\/16\"\n      azs        = [\"us-east-1a\", \"us-east-1b\"]\n    }\n    us-west-2 = {\n      cidr_block = \"10.2.0.0\/16\"\n      azs        = [\"us-west-2a\", \"us-west-2b\"]\n    }\n  }\n}\n\nprovider \"aws\" {\n  alias  = \"us_east_1\"\n  region = \"us-east-1\"\n}\n\nprovider \"aws\" {\n  alias  = \"us_west_2\"\n  region = \"us-west-2\"\n}\n\nmodule \"vpc\" {\n  for_each = local.region_configs\n  source   = \"terraform-aws-modules\/vpc\/aws\"\n\n  providers = {\n    aws = aws[replace(each.key, \"-\", \"_\")]\n  }\n\n  name            = \"vpc-${each.key}\"\n  cidr            = each.value.cidr_block\n  azs             = each.value.azs\n  private_subnets = [for i, az in each.value.azs : cidrsubnet(each.value.cidr_block, 8, i)]\n  public_subnets  = [for i, az in each.value.azs : cidrsubnet(each.value.cidr_block, 8, i + length(each.value.azs))]\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u767a\u5c55\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u306f\u3001\u3088\u308a\u8907\u96d1\u306a\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u7ba1\u7406\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-44\">\u307e\u3068\u3081\uff1afor_each\u3067\u5b9f\u73fe\u3059\u308b\u52b9\u7387\u7684\u306a\u30a4\u30f3\u30d5\u30e9\u7ba1\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-45\">for_each\u6d3b\u7528\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h3>\n\n\n\n<p>Terraform\u306efor_each\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3068\u3057\u3066\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-46\">\u8a2d\u8a08\u6642\u306e\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u8a2d\u8a08<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[ ] \u30de\u30c3\u30d7\u307e\u305f\u306f\u30bb\u30c3\u30c8\u306e\u9078\u629e\u306f\u9069\u5207\u304b<\/li>\n\n\n\n<li>[ ] \u30ad\u30fc\u306e\u547d\u540d\u898f\u5247\u306f\u7d71\u4e00\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>[ ] \u5024\u306e\u578b\u306f\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>[ ] \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306f\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30fc\u30c9\u306e\u69cb\u9020\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[ ] \u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u306e\u7bc4\u56f2\u306f\u9069\u5207\u304b<\/li>\n\n\n\n<li>[ ] \u5909\u6570\u3068\u30ed\u30fc\u30ab\u30eb\u5024\u306e\u5206\u96e2\u304c\u3067\u304d\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>[ ] \u4f9d\u5b58\u95a2\u4fc2\u306f\u660e\u78ba\u304b<\/li>\n\n\n\n<li>[ ] \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306f\u8003\u616e\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4fdd\u5b88\u6027\u306e\u78ba\u4fdd<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[ ] \u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u306f\u78ba\u4fdd\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>[ ] \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u5341\u5206\u304b<\/li>\n\n\n\n<li>[ ] \u30c6\u30b9\u30c8\u65b9\u6cd5\u306f\u78ba\u7acb\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>[ ] \u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3068\u306e\u6574\u5408\u6027\u306f\u53d6\u308c\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-47\">\u5b9f\u88c5\u6642\u306e\u78ba\u8a8d\u4e8b\u9805<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u5b9f\u88c5\u524d\u306e\u78ba\u8a8d\u4e8b\u9805\nlocals {\n  # 1. \u30c7\u30fc\u30bf\u69cb\u9020\u306e\u5b9a\u7fa9\n  resource_configs = {\n    # \u30ad\u30fc\u306e\u547d\u540d\u898f\u5247\u306f\u7d71\u4e00\u3055\u308c\u3066\u3044\u308b\u304b\n    # \u5024\u306e\u69cb\u9020\u306f\u9069\u5207\u304b\n  }\n\n  # 2. \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u8a2d\u5b9a\n  defaults = {\n    # \u5171\u901a\u306e\u8a2d\u5b9a\u306f\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u304b\n  }\n\n  # 3. \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n  validation = {\n    # \u5165\u529b\u5024\u306e\u691c\u8a3c\u306f\u5341\u5206\u304b\n  }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u9632\u6b62\u306e\u30dd\u30a4\u30f3\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u5b9f\u88c5\u6642\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\nresource \"aws_instance\" \"example\" {\n  # 1. for_each\u306e\u4f7f\u7528\n  for_each = local.validated_configs  # \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u6e08\u307f\u306e\u8a2d\u5b9a\u3092\u4f7f\u7528\n\n  # 2. \u5b89\u5168\u306a\u5024\u306e\u53c2\u7167\n  name = try(each.value.name, \"default-${each.key}\")\n\n  # 3. \u4f9d\u5b58\u95a2\u4fc2\u306e\u660e\u793a\n  depends_on = [\n    aws_vpc.main,\n    aws_subnet.primary\n  ]\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-48\">\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3068\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-49\">1. \u30b9\u30ad\u30eb\u30a2\u30c3\u30d7\u306e\u65b9\u5411\u6027<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u304b\u3089\u5fdc\u7528\u3078<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>for_each\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306e\u7fd2\u5f97<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u64cd\u4f5c\u65b9\u6cd5\u306e\u7406\u89e3<\/li>\n\n\n\n<li>\u30e2\u30b8\u30e5\u30fc\u30eb\u8a2d\u8a08\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306e\u5b66\u7fd2<\/li>\n\n\n\n<li>\u5927\u898f\u6a21\u30a4\u30f3\u30d5\u30e9\u7ba1\u7406\u3078\u306e\u9069\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5b9f\u8df5\u7684\u306a\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c0f\u898f\u6a21\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u304b\u3089\u59cb\u3081\u308b<\/li>\n\n\n\n<li>\u6bb5\u968e\u7684\u306b\u8907\u96d1\u306a\u69cb\u6210\u306b\u79fb\u884c<\/li>\n\n\n\n<li>\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30c1\u30fc\u30e0\u5185\u3067\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u5171\u6709<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-50\">2. \u63a8\u5968\u3055\u308c\u308b\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.terraform.io\/docs\">Terraform\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.hashicorp.com\/terraform\">HashiCorp Learn<\/a><\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5b9f\u8df5\u7684\u306a\u6f14\u7fd2\u74b0\u5883<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>AWS\u7121\u6599\u67a0\u3092\u4f7f\u7528\u3057\u305f\u691c\u8a3c\u74b0\u5883<\/li>\n\n\n\n<li>Localstack\u3084Terraform Cloud\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9<\/li>\n\n\n\n<li>GitLab\u3084GitHub\u306eCI\/CD\u74b0\u5883<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30ea\u30bd\u30fc\u30b9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Terraform Registry\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u4f8b<\/li>\n\n\n\n<li>GitHub\u306e\u5b9f\u88c5\u4f8b<\/li>\n\n\n\n<li>\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30d5\u30a9\u30fc\u30e9\u30e0\u3084\u30d6\u30ed\u30b0<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-51\">3. \u6b21\u306e\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5fdc\u7528\u7684\u306a\u30c8\u30d4\u30c3\u30af<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ab\u30b9\u30bf\u30e0\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u958b\u767a<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u8a2d\u8a08<\/li>\n\n\n\n<li>\u5927\u898f\u6a21\u30a4\u30f3\u30d5\u30e9\u306e\u81ea\u52d5\u5316<\/li>\n\n\n\n<li>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u95a2\u9023\u3059\u308b\u6280\u8853<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Configuration Management Tools<\/li>\n\n\n\n<li>CI\/CD Pipeline Integration<\/li>\n\n\n\n<li>Infrastructure Testing<\/li>\n\n\n\n<li>Policy as Code<\/li>\n<\/ul>\n\n\n\n<p>for_each\u306f\u3001Terraform\u3092\u4f7f\u7528\u3057\u305f\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u7ba1\u7406\u306e\u52b9\u7387\u3092\u5927\u304d\u304f\u5411\u4e0a\u3055\u305b\u308b\u6a5f\u80fd\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u5185\u5bb9\u3092\u57fa\u306b\u3001\u6bb5\u968e\u7684\u306b\u7406\u89e3\u3092\u6df1\u3081\u3001\u5b9f\u8df5\u7684\u306a\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u3066\u3044\u304f\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u6700\u521d\u306f\u5c0f\u898f\u6a21\u306a\u5b9f\u88c5\u304b\u3089\u59cb\u3081\u3001\u5f90\u3005\u306b\u8907\u96d1\u306a\u69cb\u6210\u306b\u6311\u6226\u3059\u308b\u3053\u3068\u3067\u3001\u78ba\u5b9f\u306b\u30b9\u30ad\u30eb\u30a2\u30c3\u30d7\u3092\u56f3\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>Terraform\u306b\u3088\u308b\u30a4\u30f3\u30d5\u30e9\u7ba1\u7406\u306e\u81ea\u52d5\u5316\u306f\u3001\u73fe\u4ee3\u306eDevOps\u5b9f\u8df5\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u8981\u7d20\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002for_each\u306e\u52b9\u679c\u7684\u306a\u6d3b\u7528\u306f\u3001\u305d\u306e\u4e2d\u6838\u3068\u306a\u308b\u30b9\u30ad\u30eb\u306e\u4e00\u3064\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002\u3053\u306e\u6a5f\u80fd\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u3067\u3001\u3088\u308a\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u3001\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u5b9f\u73fe\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":{"0":"post-2278","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-aws","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2278","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2278"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2278\/revisions"}],"predecessor-version":[{"id":2279,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2278\/revisions\/2279"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}