{"id":49068,"date":"2023-07-16T22:30:01","date_gmt":"2022-11-13T14:42:56","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e6%83%b3%e6%96%b9%e4%be%bf%e5%9c%b0%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8terraform%e7%9a%84for_each%e5%8a%9f%e8%83%bd%e3%80%82\/"},"modified":"2024-04-30T13:55:37","modified_gmt":"2024-04-30T05:55:37","slug":"%e6%88%91%e6%83%b3%e6%96%b9%e4%be%bf%e5%9c%b0%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8terraform%e7%9a%84for_each%e5%8a%9f%e8%83%bd%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e6%83%b3%e6%96%b9%e4%be%bf%e5%9c%b0%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8terraform%e7%9a%84for_each%e5%8a%9f%e8%83%bd%e3%80%82\/","title":{"rendered":"\u6211\u60f3\u65b9\u4fbf\u5730\u5c1d\u8bd5\u4f7f\u7528Terraform\u7684for_each\u529f\u80fd"},"content":{"rendered":"<h2>\u9996\u5148<\/h2>\n<p>\u4f7f\u7528 Terraform \u7684 for_each \u529f\u80fd\u771f\u662f\u65b9\u4fbf\u5462\u3002<\/p>\n<p>\u5982\u679c\u9700\u8981\u521b\u5efa\u591a\u4e2a\u4e0d\u540c\u7684\u8d44\u6e90\uff0c\u8fd9\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u5bf9\u6211\u6765\u8bf4\uff0c\u8fd9\u975e\u5e38\u4f53\u73b0\u4e86\u57fa\u7840\u8bbe\u65bd\u5373\u4ee3\u7801\u7684\u89c2\u5ff5\u3002<\/p>\n<p>\u6709\u65f6\u5019\uff0c\u5c3d\u7ba1\u4e0e\u76f4\u89c9\u76f8\u6096\uff0c\u6211\u4eec\u8fd8\u662f\u9700\u8981\u91c7\u53d6\u4e00\u4e9b\u4e0d\u5bfb\u5e38\u7684\u7528\u6cd5\u3002<br \/>\n\u6bd4\u5982\uff0c\u5728\u9700\u8981\u5bf9map\u7684\u5217\u8868\u8fdb\u884cfor_each\u64cd\u4f5c\u65f6\u3002<\/p>\n<p>\u5728\u8fd9\u79cd\u65f6\u5019\uff0c\u6211\u5e38\u5e38\u4f1a\u60f3\u5230\u8fd9\u6837\u7684\u4e8b\u60c5\u3002<\/p>\n<p>\u6211\u60f3\u8981\u5728\u5c1d\u8bd5\u5404\u79cd\u65b9\u5f0f\u65f6\u786e\u8ba4\u4e00\u4e0bfor_each\u7684\u529f\u80fd\uff01<\/p>\n<p>\u90a3\u4e48\u3002 (N\u00e0 me.)<\/p>\n<p>\u4f46\u662f\uff0c\u7531\u4e8efor_each\u53ea\u80fd\u5728\u8d44\u6e90\u5185\u90e8\u4f7f\u7528\uff0c\u6240\u4ee5\u9996\u5148\u9700\u8981\u51c6\u5907\u597d\u8d44\u6e90\u624d\u80fd\u8fdb\u884c\u5c1d\u8bd5\u3002<\/p>\n<p>\u867d\u7136\u8fd9\u6837\u8bf4\uff0c\u4f46\u662f\u7279\u610f\u4f7f\u7528AWS\u7b49\u8d44\u6e90\u6709\u70b9\u9ebb\u70e6\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u9019\u6b21\u6211\u5011&#8230;<\/p>\n<ul class=\"post-ul\">for_each\u306e\u52d5\u304d\u3092\u3061\u3083\u3093\u3068\u3057\u305fresource\u3092\u7528\u610f\u305b\u305a\u306b\u78ba\u8a8d\u3059\u308b\u3002<\/ul>\n<p>\u6211\u5728\u90a3\u4e2a\u65f6\u5019\u8fdb\u884c\u4e86\u4e00\u756a\u8c03\u67e5\uff0c\u627e\u51fa\u4e86\u5e94\u5bf9\u65b9\u6cd5\uff0c\u73b0\u5728\u4e0e\u4f60\u5206\u4eab\u3002<\/p>\n<h2>\u7ed3\u8bba\uff1a\u8ba9\u6211\u4eec\u4f7f\u7528 Null Provider\uff01<\/h2>\n<p>\u53ea\u6709\u8fd9\u4e2a\u3002<\/p>\n<p>\u6587\u4ef6\u5728\u8fd9\u91cc:<br \/>\nhttps:\/\/registry.terraform.io\/providers\/hashicorp\/null\/latest\/docs<\/p>\n<p>\u5982\u679c\u5bf9\u6b64\u4e86\u89e3\u7684\u4eba\u4eec\u6216\u8bb8\u53ea\u9700\u8981\u8fd9\u4e9b\u5c31\u591f\u4e86\uff0c<br \/>\n\u4e0d\u8fc7\u65e2\u7136\u5df2\u7ecf\u9ebb\u70e6\u4e86\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528null\uff0c\u901a\u8fc7\u5b9e\u9645\u6d4b\u8bd5\u6765\u786e\u8ba4for_each\u7684\u8fd0\u884c\u60c5\u51b5\u3002<\/p>\n<h2>\u4f7f\u7528\u65b9\u6cd5 (sh\u01d0 f\u01ce)<\/h2>\n<p>\u9605\u8bfb\u4e0a\u8ff0\u6587\u6863\u65f6\uff0c&#8230; (When reading the aforementioned document&#8230;)<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">resource<\/span> <span class=\"s2\">\"null_resource\"<\/span> <span class=\"s2\">\"cluster\"<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"c1\"># Changes to any instance of the cluster requires re-provisioning<\/span>\r\n  <span class=\"nx\">triggers<\/span> <span class=\"p\">=<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">cluster_instance_ids<\/span> <span class=\"p\">=<\/span> <span class=\"nx\">join<\/span><span class=\"err\">(<\/span><span class=\"s2\">\",\"<\/span><span class=\"err\">,<\/span> <span class=\"nx\">aws_instance<\/span><span class=\"err\">.<\/span><span class=\"nx\">cluster<\/span><span class=\"err\">.*.<\/span><span class=\"nx\">id<\/span><span class=\"err\">)<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u7528null_resource\u8d44\u6e90\uff0c\u5e76\u5c06map\u653e\u5165\u89e6\u53d1\u5668\u4e2d\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u8fd9\u6837\u7684\u6548\u679c\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u7acb\u523b\u8bd5\u4e00\u8bd5\u3002<\/p>\n<h2>\u8f7b\u8f7b\u5730\u5c1d\u8bd5\u4e00\u4e0b<\/h2>\n<h3>\u8fdb\u884cnull\u5b89\u88c5\u548cterraform init\u64cd\u4f5c<\/h3>\n<pre class=\"post-pre\"><code><span class=\"nx\">terraform<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">required_version<\/span> <span class=\"p\">=<\/span> <span class=\"s2\">\"&gt;= 0.12\"<\/span>\r\n  <span class=\"nx\">required_providers<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"kc\">null<\/span> <span class=\"p\">=<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"nx\">source<\/span> <span class=\"p\">=<\/span> <span class=\"s2\">\"hashicorp\/null\"<\/span>\r\n      <span class=\"nx\">version<\/span> <span class=\"p\">=<\/span> <span class=\"s2\">\"3.1.0\"<\/span>\r\n    <span class=\"p\">}<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"nx\">provider<\/span> <span class=\"s2\">\"null\"<\/span> <span class=\"p\">{}<\/span>\r\n<\/code><\/pre>\n<p>\u6267\u884cterraform init\u3002<\/p>\n<h3>\u5c1d\u8bd5\u5bf9 map \u5217\u8868\u8fdb\u884c for_each\u3002<\/h3>\n<pre class=\"post-pre\"><code><span class=\"nx\">locals<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">members<\/span>   <span class=\"p\">=<\/span> <span class=\"p\">[<\/span>\r\n      <span class=\"p\">{<\/span><span class=\"s2\">\"id\"<\/span> <span class=\"p\">=<\/span> <span class=\"mi\">1<\/span><span class=\"err\">,<\/span> <span class=\"s2\">\"name\"<\/span> <span class=\"p\">=<\/span> <span class=\"s2\">\"Takashi\"<\/span><span class=\"p\">},<\/span>\r\n      <span class=\"p\">{<\/span><span class=\"s2\">\"id\"<\/span> <span class=\"p\">=<\/span> <span class=\"mi\">2<\/span><span class=\"err\">,<\/span> <span class=\"s2\">\"name\"<\/span> <span class=\"p\">=<\/span> <span class=\"s2\">\"Satoshi\"<\/span><span class=\"p\">},<\/span>\r\n    <span class=\"p\">]<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nx\">resource<\/span> <span class=\"nx\">null_resource<\/span> <span class=\"nx\">for_each<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">for_each<\/span> <span class=\"p\">=<\/span> <span class=\"p\">{<\/span><span class=\"nx\">for<\/span> <span class=\"nx\">k<\/span> <span class=\"nx\">in<\/span> <span class=\"nx\">local<\/span><span class=\"err\">.<\/span><span class=\"nx\">members<\/span> <span class=\"err\">:<\/span> <span class=\"nx\">k<\/span><span class=\"err\">.<\/span><span class=\"nx\">id<\/span> <span class=\"p\">=<\/span><span class=\"err\">&gt;<\/span> <span class=\"nx\">k<\/span><span class=\"p\">}<\/span>\r\n    <span class=\"nx\">triggers<\/span> <span class=\"p\">=<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"s2\">\"${each.value.id}\"<\/span> <span class=\"p\">=<\/span> <span class=\"nx\">each<\/span><span class=\"err\">.<\/span><span class=\"nx\">value<\/span><span class=\"err\">.<\/span><span class=\"nx\">name<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u540e\u5c1d\u8bd5\u8fdb\u884cterraform plan\uff0c<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">Terraform<\/span> <span class=\"nx\">will<\/span> <span class=\"nx\">perform<\/span> <span class=\"nx\">the<\/span> <span class=\"nx\">following<\/span> <span class=\"nx\">actions<\/span><span class=\"err\">:<\/span>\r\n\r\n  <span class=\"c1\"># null_resource.for_each[\"1\"] will be created<\/span>\r\n  <span class=\"err\">+<\/span> <span class=\"nx\">resource<\/span> <span class=\"s2\">\"null_resource\"<\/span> <span class=\"s2\">\"for_each\"<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"err\">+<\/span> <span class=\"nx\">id<\/span>       <span class=\"p\">=<\/span> <span class=\"err\">(<\/span><span class=\"nx\">known<\/span> <span class=\"nx\">after<\/span> <span class=\"nx\">apply<\/span><span class=\"err\">)<\/span>\r\n      <span class=\"err\">+<\/span> <span class=\"nx\">triggers<\/span> <span class=\"p\">=<\/span> <span class=\"p\">{<\/span>\r\n          <span class=\"err\">+<\/span> <span class=\"s2\">\"1\"<\/span> <span class=\"p\">=<\/span> <span class=\"s2\">\"Takashi\"<\/span>\r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"c1\"># null_resource.for_each[\"2\"] will be created<\/span>\r\n  <span class=\"err\">+<\/span> <span class=\"nx\">resource<\/span> <span class=\"s2\">\"null_resource\"<\/span> <span class=\"s2\">\"for_each\"<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"err\">+<\/span> <span class=\"nx\">id<\/span>       <span class=\"p\">=<\/span> <span class=\"err\">(<\/span><span class=\"nx\">known<\/span> <span class=\"nx\">after<\/span> <span class=\"nx\">apply<\/span><span class=\"err\">)<\/span>\r\n      <span class=\"err\">+<\/span> <span class=\"nx\">triggers<\/span> <span class=\"p\">=<\/span> <span class=\"p\">{<\/span>\r\n          <span class=\"err\">+<\/span> <span class=\"s2\">\"2\"<\/span> <span class=\"p\">=<\/span> <span class=\"s2\">\"Satoshi\"<\/span>\r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n<span class=\"nx\">Plan<\/span><span class=\"err\">:<\/span> <span class=\"mi\">2<\/span> <span class=\"nx\">to<\/span> <span class=\"nx\">add<\/span><span class=\"err\">,<\/span> <span class=\"mi\">0<\/span> <span class=\"nx\">to<\/span> <span class=\"nx\">change<\/span><span class=\"err\">,<\/span> <span class=\"mi\">0<\/span> <span class=\"nx\">to<\/span> <span class=\"nx\">destroy<\/span><span class=\"err\">.<\/span>\r\n<\/code><\/pre>\n<p>\u597d\u7684\uff01\u5728triggers\u91cc\u9762\uff0cmap\u4ee5\u5f88\u597d\u7684\u65b9\u5f0f\u88ab\u8f93\u51fa\u51fa\u6765\u4e86\uff0c\u611f\u89c9\u5c31\u662f\u8fd9\u6837\u3002<\/p>\n<p>\u901a\u8fc7\u8fd9\u6837\uff0c\u6211\u4eec\u80fd\u591f\u65b9\u4fbf\u5730\u786e\u8ba4for_each\u7684\u8fd0\u4f5c\u65b9\u5f0f\u3002\u975e\u5e38\u611f\u8c22\uff01<\/p>\n<h2>\u6700\u540e\u7684\u8bdd<\/h2>\n<p>\u6211\u53ea\u4f7f\u7528AWS\u4f5c\u4e3a\u4e3b\u8981\u7684\u4f9b\u5e94\u5546\uff0c\u4f46\u662f\u4e00\u65e6\u6211\u77e5\u9053\u8fd8\u6709\u5176\u4ed6\u63d0\u4f9b\u8005\uff0c\u6211\u5c31\u7acb\u523b\u60f3\u8981\u8c03\u67e5\u4e00\u4e0b\u4e86\u3002<\/p>\n<p>\u5982\u679c\u6709\u4ec0\u4e48\u65b0\u7684\u65b9\u4fbf\u4e8b\u7269\uff0c\u6211\u60f3\u8bd5\u4e00\u8bd5\u7136\u540e\u5199\u6210\u6587\u7ae0\u3002<\/p>\n<h2>\u8bf7\u63d0\u4f9b\u76f8\u5173\u4fe1\u606f\u3002<\/h2>\n<p>hashicorp\/null | Terraform\u6ce8\u518c\u8868<br \/>\n\u7c7b\u578b\u548c\u503c-\u914d\u7f6e\u8bed\u8a00| HashiCorp\u7684Terraform<br \/>\n\u7c7b\u578b\u7ea6\u675f-\u914d\u7f6e\u8bed\u8a00| HashiCorp\u7684Terraform<br \/>\n\u5bf9\u4e8e\u8868\u8fbe\u5f0f-\u914d\u7f6e\u8bed\u8a00| HashiCorp\u7684Terraform<br \/>\nfor_each\u5143\u53c2\u6570-\u914d\u7f6e\u8bed\u8a00| HashiCorp\u7684Terraform<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u4f7f\u7528 Terraform \u7684 for_each \u529f\u80fd\u771f\u662f\u65b9\u4fbf\u5462\u3002 \u5982\u679c\u9700\u8981\u521b\u5efa\u591a\u4e2a\u4e0d\u540c\u7684\u8d44\u6e90\uff0c\u8fd9\u662f\u5fc5\u4e0d\u53ef [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-49068","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u6211\u60f3\u65b9\u4fbf\u5730\u5c1d\u8bd5\u4f7f\u7528Terraform\u7684for_each\u529f\u80fd - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u6211\u60f3\u65b9\u4fbf\u5730\u5c1d\u8bd5\u4f7f\u7528terraform\u7684for_each\u529f\u80fd\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6211\u60f3\u65b9\u4fbf\u5730\u5c1d\u8bd5\u4f7f\u7528Terraform\u7684for_each\u529f\u80fd\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u4f7f\u7528 Terraform \u7684 for_each \u529f\u80fd\u771f\u662f\u65b9\u4fbf\u5462\u3002 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