{"id":4601,"date":"2023-02-21T16:45:43","date_gmt":"2023-02-21T07:45:43","guid":{"rendered":"https:\/\/p-corporate-blog-cms.mmmcorp.co.jp\/?p=4601"},"modified":"2023-02-21T16:45:43","modified_gmt":"2023-02-21T07:45:43","slug":"terraform-apply-safely-part-2","status":"publish","type":"post","link":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/2023\/02\/21\/terraform-apply-safely-part-2\/","title":{"rendered":"terraform apply\u3092\u3088\u308a\u5b89\u5168\u306b\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u3067\u304d\u308b\u3053\u3068\uff08precondition\u7de8\uff09"},"content":{"rendered":"\n<div id=\"rtoc-mokuji-wrapper\" class=\"rtoc-mokuji-content frame4 preset5 animation-slide rtoc_open noto-sans\" data-id=\"4601\" data-theme=\"DWS BLOG 2023\">\n\t\t\t<div id=\"rtoc-mokuji-title\" class=\" rtoc_left\">\n\t\t\t<button class=\"rtoc_open_close rtoc_open\"><\/button>\n\t\t\t<span>\u76ee\u6b21<\/span>\n\t\t\t<\/div><ol class=\"rtoc-mokuji decimal_ol level-1\"><li class=\"rtoc-item\"><a href=\"#rtoc-1\">\u306f\u3058\u3081\u306b<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-2\">\u30d0\u30fc\u30b8\u30e7\u30f31.2.0\u306e\u65b0\u6a5f\u80fd<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-3\">\u4f8b1\uff1aEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u6307\u5b9a<\/a><ol class=\"rtoc-mokuji mokuji_ol level-2\"><li class=\"rtoc-item\"><a href=\"#rtoc-4\">precondition\u3092\u4f7f\u308f\u306a\u3044\u4f8b<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-5\">precondition\u3092\u4f7f\u3063\u305f\u4f8b<\/a><\/li><\/ol><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-6\">\u4f8b2\uff1aS3\u30d0\u30b1\u30c3\u30c8\u306e\u30dd\u30ea\u30b7\u30fc\u5185\u5bb9<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-7\">\u307e\u3068\u3081<\/a><\/li><\/ol><\/div><h2 id=\"rtoc-1\"  class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n<p>\u897f\u85e4\u3067\u3059\u3002<\/p>\n\n\n<p>\u30bf\u30a4\u30c8\u30eb\u306b\u300c\u301c\u301c\u7de8\u300d\u3068\u3042\u308b\u901a\u308a\u30b7\u30ea\u30fc\u30ba\u7d9a\u7de8\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n\n\n<p>\u524d\u56de\u306e\u8a18\u4e8b\u306f\u3053\u3061\u3089\uff1a<\/p>\n\n\n<p><a href=\"https:\/\/p-corporate-blog-cms.mmmcorp.co.jp\/blog\/2022\/10\/31\/terraform-apply-safely\/\" target=\"_blank\" rel=\"noopener\" title=\"\">terraform apply\u3092\u3088\u308a\u5b89\u5168\u306b\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u3067\u304d\u308b\u3053\u3068 - \u30c7\u30ed\u30a4\u30c8 \u30c8\u30fc\u30de\u30c4 \u30a6\u30a7\u30d6\u30b5\u30fc\u30d3\u30b9\u682a\u5f0f\u4f1a\u793e\uff08DWS\uff09\u516c\u5f0f\u30d6\u30ed\u30b0<\/a><\/p>\n\n\n<p>\u524d\u56de\u306f\u3001terraform\u306b\u304a\u3051\u308b\u6a19\u6e96\u306e\u30b3\u30de\u30f3\u30c9\u3084AWS\u306eIAM\u306e\u4ed5\u7d44\u307f\u306a\u3069\u3092\u6709\u52b9\u6d3b\u7528\u3057\u3066\u3001terraform apply\u306e\u5b9f\u884c\u3092\u3044\u304b\u306b\u3057\u3066\u5b89\u5168\u306a\u3082\u306e\u306b\u3057\u3066\u3044\u304f\u304b\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n<p>\u305d\u3053\u304b\u3089\u307e\u305f\u65b0\u305f\u306a\u624b\u6cd5\u3092\u691c\u8a0e\u3057\u307e\u3057\u305f\u306e\u3067\u3001\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n<h2 id=\"rtoc-2\"  class=\"wp-block-heading\">\u30d0\u30fc\u30b8\u30e7\u30f31.2.0\u306e\u65b0\u6a5f\u80fd<\/h2>\n\n\n<p>terraform\u306e\u30d0\u30fc\u30b8\u30e7\u30f31.2.0\u3067\u8ffd\u52a0\u3055\u308c\u305f\u3082\u306e\u306b<\/p>\n\n\n<ul><li>precondition<\/li><li>postcondition<\/li><\/ul>\n\n\n<p>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<p><a href=\"https:\/\/github.com\/hashicorp\/terraform\/releases\/tag\/v1.2.0\" target=\"_blank\" rel=\"noopener\" title=\"\"><a href=\"https:\/\/github.com\/hashicorp\/terraform\/releases\/tag\/v1.2.0\">https:\/\/github.com\/hashicorp\/terraform\/releases\/tag\/v1.2.0<\/a><\/a><\/p>\n\n\n<p>\u3053\u308c\u306fterraform\u306eresource, data source\u305d\u3057\u3066\u3001module\u306eoutput\u306b\u304a\u3051\u308b\u524d\u63d0\u6761\u4ef6\u306a\u3069\u3092\u5b9a\u7fa9\u3057\u3001\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u306a\u304b\u3063\u305f\u969b\u306b\u306f\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u767a\u3057\u3066\u3001\u51e6\u7406\u306e\u9032\u884c\u3092\u30b9\u30c8\u30c3\u30d7\u3057\u3066\u304f\u308c\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u751f\u6210\u3055\u308c\u308b\u30ea\u30bd\u30fc\u30b9\u306b\u671f\u5f85\u3055\u308c\u308b\u72b6\u614b\u306e\u5b9a\u7fa9\u3092\u3084\u308a\u3084\u3059\u304f\u306a\u308a\u307e\u3057\u305f\u3002<br>\u4eca\u56de\u306f\u3053\u306e2\u3064\u306e\u3046\u3061\u306eprecondition\u306b\u3064\u3044\u3066\u6398\u308a\u4e0b\u3052\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n<h2 id=\"rtoc-3\"  class=\"wp-block-heading\">\u4f8b1\uff1aEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u6307\u5b9a<\/h2>\n\n\n<p>\u307e\u305a\u306f\u3001<br><a href=\"https:\/\/developer.hashicorp.com\/terraform\/language\/expressions\/custom-conditions#preconditions-and-postconditions\" target=\"_blank\" rel=\"noopener\" title=\"\"><a href=\"https:\/\/developer.hashicorp.com\/terraform\/language\/expressions\/custom-conditions#preconditions-and-postconditions\">https:\/\/developer.hashicorp.com\/terraform\/language\/expressions\/custom-conditions#preconditions-and-postconditions<\/a><\/a><br>\u306b\u3066\u7d39\u4ecb\u3055\u308c\u3066\u3044\u308b\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3042\u308b\u4f8b<\/p>\n\n\n<ul><li>EC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306b\u201d<code>x86_64<\/code>\u201d\u306eAMI\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u524d\u63d0\u6761\u4ef6\u3068\u3057\u305f\u3044<\/li><\/ul>\n\n\n<p>\u3068\u3044\u3046\u30b7\u30ca\u30ea\u30aa\u3067\u8003\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n<h3 id=\"rtoc-4\"  class=\"wp-block-heading\">precondition\u3092\u4f7f\u308f\u306a\u3044\u4f8b<\/h3>\n\n\n<p>precondition\u3092\u4f7f\u308f\u306a\u3044\u3068\u3059\u308b\u3068<\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\" data-file=\"Terraform\"><code>data &quot;aws_ami&quot; &quot;example&quot; {\n  owners = [&quot;amazon&quot;]\n\n  filter {\n    name   = &quot;image-id&quot;\n    values = [&quot;ami-abc123&quot;]\n  }\n  filter {\n  name   = &quot;architecture&quot;\n  values = [&quot;x86_64&quot;]\n  }\n\nresource &quot;aws_instance&quot; &quot;example&quot; {\n  instance_type = &quot;t3.micro&quot;\n  ami           = data.aws_ami.example.id\n}<\/code><\/pre><\/div>\n\n\n<p>\u3068\u3044\u3046\u5177\u5408\u3067\u3057\u3087\u3046\u304b\u3002<br><code>aws_ami.example<\/code>\u306edata\u30d6\u30ed\u30c3\u30af\u306e\u4e2d\u3067\u300c<code>x86_64<\/code>\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u3082\u306e\u300d\u3068\u3044\u3046filter\u3092\u8a18\u8ff0\u3059\u308b\u65b9\u6cd5\u3067\u3001\u3084\u308a\u65b9\u3068\u3057\u3066\u306f\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n<p>\u3053\u306e\u66f8\u304d\u65b9\u3092\u3057\u3066\u3044\u308b\u3068\u304d\u306b\u6761\u4ef6\uff08\u300c<code>x86_64<\/code>\u3067\u3042\u308b\u3053\u3068\u300d\uff09\u304c\u6e80\u305f\u3055\u308c\u305a\u3001terraform\u30b3\u30de\u30f3\u30c9\u304c\u5931\u6557\u3059\u308b\u3068\u3057\u305f\u3089\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>$ terraform apply\ndata.aws_ami.example: Reading...\n\u2577\n\u2502 Error: Your query returned no results. Please change your search criteria and try again.\n\u2502 \n\u2502   with data.aws_ami.example,\n\u2502   on test.tf line 1, in data &quot;aws_ami&quot; &quot;example&quot;:\n\u2502    1: data &quot;aws_ami&quot; &quot;example&quot; {\n\u2502 \n\u2575<\/code><\/pre><\/div>\n\n\n<p><code>aws_ami.example<\/code>\u306edata\u30d6\u30ed\u30c3\u30af\u306e\u4e2d\u3067\u300c\u6761\u4ef6\u306b\u3042\u3046\u3082\u306e\u304c\u898b\u3064\u304b\u3089\u306a\u304b\u3063\u305f\u300d\u3068\u3044\u3046\u8868\u793a\u306b\u7559\u307e\u3063\u3066\u3044\u307e\u3059\u3002<br>\u3082\u3061\u308d\u3093\u3053\u3053\u304b\u3089\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c8\u3057\u3066\u3044\u3051\u3070\u826f\u3044\u3067\u3059\u304c\u3001\u672c\u6765\u9054\u6210\u3057\u305f\u3044<\/p>\n\n\n<ul><li>\u300c\u201dexample\u201d\u306eEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c<code>x86_64<\/code>\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3067\u8d77\u52d5\u3055\u308c\u308b\u3053\u3068\u300d<\/li><\/ul>\n\n\n<p>\u3068\u3044\u3046\u524d\u63d0\u6761\u4ef6\u304b\u3089\u306f\u96e2\u308c\u305f\u5185\u5bb9\u306e\u60c5\u5831\u306b\u306a\u3063\u3066\u3044\u3066\u3001\u30a8\u30e9\u30fc\u306b\u306a\u3063\u305f\u7406\u7531\u3092\u77e5\u308b\u305f\u3081\u306b\u306f\u5c11\u3057\u4e0d\u89aa\u5207\u3067\u3059\u3002<\/p>\n\n\n<h3 id=\"rtoc-5\"  class=\"wp-block-heading\">precondition\u3092\u4f7f\u3063\u305f\u4f8b<\/h3>\n\n\n<p>\u6b21\u306bprecondition\u3092\u4f7f\u3063\u305f\u4f8b\u3092\u8003\u3048\u307e\u3059\u3002<br>\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3042\u308b\u4f8b\u3092\u898b\u308b\u3068<\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\" data-file=\"Terraform\"><code>data &quot;aws_ami&quot; &quot;example&quot; {\n  owners = [&quot;amazon&quot;]\n\n  filter {\n    name   = &quot;image-id&quot;\n    values = [&quot;ami-abc123&quot;]\n  }\n}\n\nresource &quot;aws_instance&quot; &quot;example&quot; {\n  instance_type = &quot;t3.micro&quot;\n  ami           = data.aws_ami.example.id\n\n  lifecycle {\n    # The AMI ID must refer to an AMI that contains an operating system\n    # for the <code>x86_64<\/code> architecture.\n    precondition {\n      condition     = data.aws_ami.example.architecture == &quot;x86_64&quot;\n      error_message = &quot;The selected AMI must be for the x86_64 architecture.&quot;\n    }\n\uff08\u4ee5\u4e0b\u7565\uff09\n}<\/code><\/pre><\/div>\n\n\n<p>\u3068\u3044\u3046\u66f8\u304d\u65b9\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<p><code><strong>aws_instance.example<\/strong><\/code>\u306eresource\u306e\u4e2d\u306b\u300c\u4f7f\u7528\u3059\u308bAMI\u306f<code>x86_64<\/code>\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u3082\u306e\u304b\u300d\u3068\u3044\u3046\u3053\u3068\u3092<code>precondition<\/code>\u3067\u8a18\u8f09\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n<p>\u5b9f\u614b\u3068\u3057\u3066\u306f\u5192\u982d\u306eprecondition\u3092\u4f7f\u308f\u306a\u3044\u4f8b\u3068\u540c\u3058\u3067\u3059\u304c\u3001precondition\u3092\u4f7f\u3046\u3053\u3068\u3067<\/p>\n\n\n<ul><li>\u3053\u306eEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u201dexample\u201d\u306f<code>x86_64<\/code>\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u30de\u30a4\u30f3\u30a4\u30e1\u30fc\u30b8\u3067\u4f5c\u3089\u308c\u308b\u5fc5\u8981\u304c\u3042\u308b<\/li><\/ul>\n\n\n<p>\u3068\u3044\u3046\u524d\u63d0\u6761\u4ef6\u3092<code><strong>aws_instance.example<\/strong><\/code>\u306eresource\u306e\u4e2d\u3067\u8a18\u8f09\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u306a\u304b\u3063\u305f\u3068\u304d\u306b\u306f\u30ea\u30bd\u30fc\u30b9\u306e\u4f5c\u6210\u81ea\u4f53\u3092\u9632\u3044\u3067\u304f\u308c\u307e\u3059\u3002<br>\u95a2\u9023\u3059\u308bresource\u5185\u306b\u66f8\u304b\u308c\u308b\u3053\u3068\u3067\u3001\uff08\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u5f15\u304d\u7d99\u3050\u306a\u3069\u3057\u3066\uff09\u3053\u306e\u30b3\u30fc\u30c9\u3092\u306f\u3058\u3081\u3066\u898b\u305f\u7ba1\u7406\u8005\u306f\u3088\u308a\u30b9\u30e0\u30fc\u30ba\u306b\u300c\u3053\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u3069\u3046\u3042\u308b\u3079\u304d\u3068\u610f\u56f3\u3055\u308c\u3066\u3044\u305f\u304b\u300d\u3092\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<p>\u305d\u3057\u3066\u3001<code><strong>precondition<\/strong><\/code>\u3067\u306f<code><strong>error_message<\/strong><\/code>\u3092\u5b9a\u7fa9\u3067\u304d\u308b\u306e\u3067\u3001terraform\u30b3\u30de\u30f3\u30c9\u304c\u5931\u6557\u3057\u305f\u6642\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c8\u304c\u3088\u308a\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<p>\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u305a\u5931\u6557\u3057\u305f\u969b\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>$ terraform apply\ndata.aws_ami.example: Reading...\ndata.aws_ami.example: Read complete after 0s [id=ami-0b6ffdb4868a0bcac]\n\u2577\n\u2502 Error: Resource precondition failed\n\u2502 \n\u2502   on test.tf line 17, in resource &quot;aws_instance&quot; &quot;example&quot;:\n\u2502   17:       condition     = data.aws_ami.example.architecture == &quot;x86_64&quot;\n\u2502     \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n\u2502     \u2502 data.aws_ami.example.architecture is &quot;arm64&quot;\n\u2502 \n\u2502 The selected AMI must be for the x86_64 architecture.\n\u2575<\/code><\/pre><\/div>\n\n\n<p>\u3053\u306e\u3088\u3046\u306b<code>error_message<\/code>\u3067\u8a18\u8ff0\u3057\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u3066\u3001terraform\u51e6\u7406\u304c\u505c\u6b62\u3057\u3066\u304f\u308c\u308b\u306e\u3067\u3001<\/p>\n\n\n<ul><li>\u300c<code>x86_64<\/code>\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306eAMI\u304c\u9078\u629e\u3055\u308c\u306a\u304b\u3063\u305f\u304b\u3089\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3001apply\u304c\u4e2d\u65ad\u3055\u308c\u305f\u306e\u3060\u300d<\/li><\/ul>\n\n\n<p>\u3068\u3044\u3046\u3053\u3068\u3092\u76f4\u63a5\u7684\u306b\u4f1d\u3048\u3066\u304f\u308c\u308b\u89aa\u5207\u306a\u8868\u793a\u306b\u306a\u3063\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n\n\n<p>\u3053\u306e\u3088\u3046\u306bprecondition\u306e\u4ed5\u7d44\u307f\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u671f\u5f85\u3055\u308c\u308b\u72b6\u614b\u306e\u8a18\u8ff0\u304c\u3084\u308a\u3084\u3059\u304f\u306a\u308a\u3001\u8aad\u307f\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<br>\u305d\u3057\u3066\u3001\u671f\u5f85\u3055\u308c\u306a\u3044\u72b6\u614b\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u4f5c\u3089\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u3092\u9632\u3050\u30ac\u30fc\u30c9\u30ec\u30fc\u30eb\u3068\u3057\u3066\u3082\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n\n\n<h2 id=\"rtoc-6\"  class=\"wp-block-heading\">\u4f8b2\uff1aS3\u30d0\u30b1\u30c3\u30c8\u306e\u30dd\u30ea\u30b7\u30fc\u5185\u5bb9<\/h2>\n\n\n<p>\u3055\u3089\u306b\u4ed6\u306e\u30b7\u30ca\u30ea\u30aa\u3082\u8003\u3048\u3066\u307f\u307e\u3059\u3002<br>\u305f\u3068\u3048\u3070\u3001<\/p>\n\n\n<ul><li>S3\u30d0\u30b1\u30c3\u30c8\u3092\u69cb\u7bc9\u3057\u3001\u305d\u306e\u30d0\u30b1\u30c3\u30c8\u306b\u7f6e\u304b\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306f\u30e6\u30fc\u30b6\u30fc\u30fbAlice\u306e\u307f\u30a2\u30af\u30bb\u30b9\uff08<code>s3:GetObject<\/code>\uff09\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b<\/li><\/ul>\n\n\n<p>\u3068\u3044\u3046\u69cb\u6210\u3092\u76ee\u6307\u3059\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n<p>\u308f\u3056\u3068\u30a8\u30e9\u30fc\u3092\u6df7\u305c\u305f\u5f62\u3067\u8a18\u8ff0\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\" data-file=\"Terraform\"><code># 123456789012\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u304b\u3089S3\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc\u306e\u5185\u5bb9\ndata &quot;aws_iam_policy_document&quot; &quot;example&quot; {\n  version = &quot;2012-10-17&quot;\n  statement {\n    sid    = &quot;AllowGetObject&quot;\n    effect = &quot;Allow&quot;\n    principals {\n      type = &quot;AWS&quot;\n      # \u308f\u3056\u3068\u8aa4\u3063\u305f\u30e6\u30fc\u30b6\u30fc\u540d\u3092\u6307\u5b9a\n      identifiers = [&quot;arn:aws:iam::123456789012:user\/Bob&quot;]\n    }\n    actions   = [&quot;s3:GetObject&quot;]\n    resources = [&quot;arn:aws:s3:::example-bucket-name&quot;, &quot;arn:aws:s3:::example-bucket-name\/*&quot;]\n  }\n}\n\n# \u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc\u3092\u9069\u7528\u3059\u308b\u5bfe\u8c61\u3068\u306a\u308bS3\u30d0\u30b1\u30c3\u30c8\u3092\u4f5c\u6210\nresource &quot;aws_s3_bucket&quot; &quot;example&quot; {\n  bucket = &quot;example-bucket-name&quot;\n  lifecycle {\n    precondition {\n      condition     = can(regex(&quot;Alice&quot;, data.aws_iam_policy_document.example.json))\n      error_message = &quot;\u9069\u7528\u3059\u308b\u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc\u306b\u306f\u3001\\&quot;Alice\\&quot;\u306e\u8a18\u8f09\u304c\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059&quot;\n    }\n  }\n}\n\n# S3\u30d0\u30b1\u30c3\u30c8\u306b\u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc\u3092\u9069\u7528\nresource &quot;aws_s3_bucket_policy&quot; &quot;example&quot; {\n  bucket = aws_s3_bucket.example.id\n  policy = data.aws_iam_policy_document.example.json\n}<\/code><\/pre><\/div>\n\n\n<p><code><strong>data.aws_iam_policy_document.example<\/strong><\/code><br>\u306e\u90e8\u5206\u306e\u4e2d\u3067<code>example-bucket-name<\/code>\u3068\u3044\u3046\u540d\u524d\u306eS3\u30d0\u30b1\u30c3\u30c8\u5185\u3067\u306e<code>GetObject<\/code>\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u8a31\u53ef\u3059\u308b\u30dd\u30ea\u30b7\u30fc\u5185\u5bb9\u3092\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002<br>\u30b7\u30ca\u30ea\u30aa\u306b\u6cbf\u3063\u3066\u5b9f\u88c5\u3059\u308b\u306a\u3089\u3070\u3001<code>principals<\/code>\u306e\u4e2d\u3067\u306f<code>Alice<\/code>\u306eArn\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u691c\u8a3c\u7528\u306b\u308f\u3056\u3068\u8aa4\u3063\u305f\u6307\u5b9a\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n<p>\u305d\u3057\u3066\u3001<br><code><strong>resource.aws_s3_bucket.example<\/strong><\/code><br>\u306b\u3066\u3001S3\u30d0\u30b1\u30c3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u4e2d\u306bprecondition\u3092\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n<p>\u3053\u3053\u3067\u306f<br><a href=\"https:\/\/developer.hashicorp.com\/terraform\/language\/expressions\/custom-conditions#can-function\"><a href=\"https:\/\/developer.hashicorp.com\/terraform\/language\/expressions\/custom-conditions#can-function\">https:\/\/developer.hashicorp.com\/terraform\/language\/expressions\/custom-conditions#can-function<\/a><\/a><br>\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b<code>can<\/code>\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u6b63\u898f\u8868\u73fe\uff08<code>regex<\/code>\uff09\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067<\/p>\n\n\n<ul><li>\u300c\u201dAlice\u201d\u3068\u3044\u3046\u6587\u5b57\u5217\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u300d<\/li><\/ul>\n\n\n<p>\u3068\u3044\u3046\u3053\u3068\u3092\u6761\u4ef6\u306b\u304a\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n<p>\uff08\u203b\u53b3\u5bc6\u306b\u30b7\u30ca\u30ea\u30aa\u306b\u6cbf\u3046\u306e\u3067\u3042\u308c\u3070\u3001\u5b9a\u7fa9\u3059\u308b\u3079\u304d\u6761\u4ef6\u306f\u300c\u201dAlice\u201d\u304cGetObject\u3092\u3067\u304d\u308b\u3088\u3046\u306a\u30dd\u30ea\u30b7\u30fc\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u300d\u306a\u306e\u3067\u3059\u304c\u3001\u8907\u96d1\u306b\u306a\u308a\u305d\u3046\u3060\u3063\u305f\u306e\u3067\u3001\u4eca\u56de\u306f\u6587\u5b57\u5217\u306e\u6709\u7121\u306e\u78ba\u8a8d\u306b\u7559\u3081\u3066\u3044\u307e\u3059\u3002\uff09<\/p>\n\n\n<p>\u3053\u306e\u72b6\u614b\u3067\u3001terraform\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u2026<\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>$ terraform apply\ndata.aws_iam_policy_document.example: Reading...\ndata.aws_iam_policy_document.example: Read complete after 0s [id=3825146340]\naws_s3_bucket.example: Refreshing state... [id=example-bucket-name-hello]\n\u2577\n\u2502 Error: Resource precondition failed\n\u2502 \n\u2502   on test.tf line 20, in resource &quot;aws_s3_bucket&quot; &quot;example&quot;:\n\u2502   20:       condition     = can(regex(&quot;Alice&quot;, data.aws_iam_policy_document.example.json))\n\u2502     \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n\u2502     \u2502 data.aws_iam_policy_document.example.json is &quot;{\\n  \\&quot;Version\\&quot;: \\&quot;2012-10-17\\&quot;,\\n  \\&quot;Statement\\&quot;: [\\n    {\\n      \\&quot;Sid\\&quot;: \\&quot;AllowGetObject\\&quot;,\\n      \\&quot;Effect\\&quot;: \\&quot;Allow\\&quot;,\\n      \\&quot;Action\\&quot;: \\&quot;s3:GetObject\\&quot;,\\n      \\&quot;Resource\\&quot;: [\\n        \\&quot;arn:aws:s3:::example-bucket-name\/*\\&quot;,\\n        \\&quot;arn:aws:s3:::example-bucket-name\\&quot;\\n      ],\\n      \\&quot;Principal\\&quot;: {\\n        \\&quot;AWS\\&quot;: \\&quot;arn:aws:iam::123456789012:user\/Bob\\&quot;\\n      }\\n    }\\n  ]\\n}&quot;\n\u2502 \n\u2502 \u9069\u7528\u3059\u308b\u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc\u306b\u306f\u3001&quot;Alice&quot;\u306e\u8a18\u8f09\u304c\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/code><\/pre><\/div>\n\n\n<p>\u306e\u3088\u3046\u306b\u306a\u308a\u3001\u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc\u304c\u524d\u63d0\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u305f\u3081\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u5171\u306b\u4e2d\u6b62\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n<p>\u3053\u308c\u306f<\/p>\n\n\n<ul><li>\u300c\u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc\u304c\u524d\u63d0\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u306a\u3044\u3046\u3061\u306bS3\u30d0\u30b1\u30c3\u30c8\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u304c\u4f5c\u3089\u308c\u3066\u3057\u307e\u308f\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u300d<\/li><\/ul>\n\n\n<p>\u3068\u3044\u3046\u30ac\u30fc\u30c9\u30ec\u30fc\u30eb\u7684\u306a\u52d5\u304d\u3092\u3057\u3066\u304f\u308c\u3066\u304a\u308a\u3001\u671f\u5f85\u901a\u308a\u306e\u52d5\u4f5c\u3067\u3059\u3002<\/p>\n\n\n<p>\u6b21\u306b\u3001<code>Bob<\/code>\u3068\u8a18\u8f09\u3057\u3066\u3044\u305f\u7b87\u6240\u3092\u6b63\u3057\u304f<code>Alice<\/code>\u3068\u4fee\u6b63\u3057\u3066\u5b9f\u884c\u3059\u308b\u3068\u3069\u3046\u306a\u308b\u304b\u307f\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>$ terraform apply\ndata.aws_iam_policy_document.example: Reading...\ndata.aws_iam_policy_document.example: Read complete after 0s [id=133686337]\n\nTerraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:\n  + create\n\nTerraform will perform the following actions:\n\n  # aws_s3_bucket.example will be created\n  + resource &quot;aws_s3_bucket&quot; &quot;example&quot; {\n      + acceleration_status         = (known after apply)\n      + acl                         = (known after apply)\n      + arn                         = (known after apply)\n      + bucket                      = &quot;example-bucket-name&quot;\n      + bucket_domain_name          = (known after apply)\n      + bucket_regional_domain_name = (known after apply)\n      + force_destroy               = false\n      + hosted_zone_id              = (known after apply)\n      + id                          = (known after apply)\n\uff08\u7565\uff09\n    }\n\n  # aws_s3_bucket_policy.example will be created\n  + resource &quot;aws_s3_bucket_policy&quot; &quot;example&quot; {\n      + bucket = (known after apply)\n      + id     = (known after apply)\n      + policy = jsonencode(\n            {\n              + Statement = [\n                  + {\n                      + Action    = &quot;s3:GetObject&quot;\n                      + Effect    = &quot;Allow&quot;\n                      + Principal = {\n                          + AWS = &quot;arn:aws:iam::123456789012:user\/Alice&quot;\n                        }\n                      + Resource  = [\n                          + &quot;arn:aws:s3:::example-bucket-name\/*&quot;,\n                          + &quot;arn:aws:s3:::example-bucket-name&quot;,\n                        ]\n                      + Sid       = &quot;AllowGetObject&quot;\n                    },\n                ]\n              + Version   = &quot;2012-10-17&quot;\n            }\n        )\n    }\n\nPlan: 2 to add, 0 to change, 0 to destroy.<\/code><\/pre><\/div>\n\n\n<p>\u4eca\u5ea6\u306f\u30a8\u30e9\u30fc\u306a\u304f\u3001apply\u306e\u52d5\u4f5c\u306b\u5165\u3063\u3066\u304a\u308a\u3001\u30ea\u30bd\u30fc\u30b9\u304c\u4f5c\u6210\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n<h2 id=\"rtoc-7\"  class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n<p>\u4ee5\u4e0a\u3001precondition\u306e\u4ed5\u7d44\u307f\u3092\u4f7f\u3063\u305f\u30ea\u30bd\u30fc\u30b9\u4f5c\u6210\u6642\u306e\u524d\u63d0\u6761\u4ef6\u306e\u8a2d\u5b9a\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n<p>\u3053\u306e\u6a5f\u80fd\u306f\u6bd4\u8f03\u7684\u65b0\u3057\u304f\u3001\u30ce\u30a6\u30cf\u30a6\u304c\u306a\u304b\u306a\u304b\u5c11\u306a\u3044\u3067\u3059\u304c\u3001\u4f7f\u3044\u3053\u306a\u305b\u3070\u304b\u306a\u308a\u4fbf\u5229\u306b\u306a\u308a\u305d\u3046\u3067\u3059\u3002<br>\u3082\u3068\u3082\u3068\u3001\u30ea\u30bd\u30fc\u30b9\u540c\u58eb\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u691c\u51fa\u3057\u3066\u3001\u9806\u5e8f\u7acb\u3066\u3066\u30ea\u30bd\u30fc\u30b9\u4f5c\u6210\u3057\u3066\u304f\u308c\u308bterraform\u306e\u4ed5\u7d44\u307f\u306a\u3069\u306f\u4fbf\u5229\u306a\u3082\u306e\u3067\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u3067\u3082\u306a\u304b\u306a\u304b\u30ab\u30d0\u30fc\u3067\u304d\u306a\u304b\u3063\u305f\u500b\u3005\u306e\u30ea\u30bd\u30fc\u30b9\u306e\u5c5e\u6027\u30fb\u5185\u5bb9\u306b\u5bfe\u3057\u3066\u524d\u63d0\u6761\u4ef6\u3092\u4f5c\u308c\u308b\u306e\u306fterraform apply\u306e\u5b89\u5168\u6027\u3092\u9ad8\u3081\u308b\u4e0a\u3067\u5927\u304d\u306a\u5229\u70b9\u306b\u306a\u308a\u305d\u3046\u3067\u3059\u3002<\/p>\n\n\n<p>\u305d\u3057\u3066\u3001\u30b3\u30fc\u30c9\u5185\u306e\u8a18\u8ff0\u3067\u300c\u3053\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u3069\u3046\u3042\u308b\u3079\u304d\u3068\u610f\u56f3\u3055\u308c\u3066\u3044\u308b\u304b\u300d\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u5316\u304c\u9032\u3080\u306e\u3067\u3001\u30c1\u30fc\u30e0\u3067\u30a4\u30f3\u30d5\u30e9\u7ba1\u7406\u3092\u884c\u3046\u969b\u306e\u52b9\u7387\u30a2\u30c3\u30d7\u3082\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<p>\u4eca\u56de\u3082Terraform\u3067\u30a4\u30f3\u30d5\u30e9\u5b9f\u88c5\u3092\u3057\u3066\u3044\u304f\u969b\u306e\u5b89\u5168\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u30a2\u30a4\u30c7\u30a3\u30a2\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b21 \u306f\u3058\u3081\u306b\u30d0\u30fc\u30b8\u30e7\u30f31.2.0\u306e\u65b0\u6a5f\u80fd\u4f8b1\uff1aEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u6307\u5b9aprecondition\u3092\u4f7f\u308f\u306a\u3044\u4f8bprecondition\u3092\u4f7f\u3063\u305f\u4f8b\u4f8b2\uff1aS3\u30d0\u30b1\u30c3\u30c8\u306e\u30dd\u30ea\u30b7\u30fc\u5185\u5bb9\u307e\u3068\u3081\u306f\u3058\u3081\u306b \u897f\u85e4\u3067\u3059\u3002 \u30bf [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3437,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jinr_url_youtube":"","_jinr_pip_youtube":false,"_jinr_time_youtube":"","_jinr_thumb_youtube":"","_jinr_media_youtube":"","_jinr_category_edit":false,"_jinr_category":"","_jinr_title_display":false,"_jinr_snsbutton_display":false,"_jinr_ads_display":false,"_jinr_thumbnail_display":false,"_jinr_profile_display":false,"_jinr_relatedpost_display":false,"_jinr_sidebar1col_display":false,"_jinr_sidebar2col_display":false,"_jinr_seotitle_display":"","_jinr_description_display":"","_jinr_keyword_display":"","_jinr_hastag_display":"","_jinr_canonical_display":"","_jinr_noindex_display":false,"_jinr_paidpost":false,"_jinr_paidpost_product_id":"","_jinr_headtag_article":""},"categories":[4],"tags":[16,60],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/posts\/4601"}],"collection":[{"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/comments?post=4601"}],"version-history":[{"count":0,"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/posts\/4601\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/media?parent=4601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/categories?post=4601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cms-mordpress.test.mmmcorp.co.jp\/wp-json\/wp\/v2\/tags?post=4601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}