{"id":1603,"date":"2025-06-21T06:49:12","date_gmt":"2025-06-20T21:49:12","guid":{"rendered":"https:\/\/itstudy365.com\/blog\/?p=1603"},"modified":"2025-06-21T06:49:12","modified_gmt":"2025-06-20T21:49:12","slug":"kubernetes-learning-%e7%ac%ac39%e7%ab%a0%ef%bc%9acrd%ef%bc%88custom-resource-definition%ef%bc%89%e3%81%a8%e3%81%af%ef%bc%9f%ef%bd%9ekubernetes%e3%81%ab%e8%87%aa%e5%88%86%e5%b0%82%e7%94%a8","status":"publish","type":"post","link":"https:\/\/itstudy365.com\/blog\/2025\/06\/21\/kubernetes-learning-%e7%ac%ac39%e7%ab%a0%ef%bc%9acrd%ef%bc%88custom-resource-definition%ef%bc%89%e3%81%a8%e3%81%af%ef%bc%9f%ef%bd%9ekubernetes%e3%81%ab%e8%87%aa%e5%88%86%e5%b0%82%e7%94%a8\/","title":{"rendered":"Kubernetes Learning \u7b2c39\u7ae0\uff1aCRD\uff08Custom Resource Definition\uff09\u3068\u306f\uff1f\uff5eKubernetes\u306b\u201c\u81ea\u5206\u5c02\u7528\u306e\u30ea\u30bd\u30fc\u30b9\u201d\u3092\u8ffd\u52a0\u3059\u308b\u4ed5\u7d44\u307f\uff5e"},"content":{"rendered":"\n<button id=\"bb1\" type=\"button\" value=\"Play\" class=\"responsivevoice-button\" title=\"ResponsiveVoice Tap to Start\/Stop Speech\"><span>&#128266; Play<\/span><\/button>\n        <script>\n            bb1.onclick = function(){\n                if(responsiveVoice.isPlaying()){\n                    responsiveVoice.cancel();\n                }else{\n                    responsiveVoice.speak(\"\u2705 1. CRD\u3068\u306f\uff1f CRD\uff08Custom Resource Definition\uff09\u3068\u306f\u3001Kubernetes\u306b\u72ec\u81ea\u306e\u30ea\u30bd\u30fc\u30b9\uff08\u30ab\u30b9\u30bf\u30e0\u30ea\u30bd\u30fc\u30b9\uff09\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u5b9a\u7fa9\u30d5\u30a1\u30a4\u30eb\u306e\u3053\u3068\u3067\u3059\u3002 \u305f\u3068\u3048\u3070 Kubernetes \u306f\u6a19\u6e96\u3067 Pod \u3084 Service \u306a\u3069\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u300cMyApp\u300d\u300cBackup\u300d\u300cDatabaseCluster\u300d\u306a\u3069\u3001\u81ea\u5206\u305f\u3061\u306b\u3068\u3063\u3066\u610f\u5473\u306e\u3042\u308b\u65b0\u3057\u3044\u7a2e\u985e\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u5b9a\u7fa9\u3057\u3066\u6271\u3044\u305f\u3044\u5834\u9762\u3082\u3042\u308a\u307e\u3059\u3002 \u305d\u306e\u3068\u304d\u306b\u5fc5\u8981\u306b\u306a\u308b\u306e\u304c\u3001\u3053\u306e CRD \u3067\u3059\u3002 \ud83e\udde9 2. CRD\u306e\u5f79\u5272\u3068\u4ed5\u7d44\u307f CRD \u3092 Kubernetes \u30af\u30e9\u30b9\u30bf\u306b\u767b\u9332\u3059\u308b\u3068\u3001\u305d\u306e\u77ac\u9593\u304b\u3089 Kubernetes \u306b\u65b0\u3057\u3044 API \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a CRD \u3092\u5b9a\u7fa9\u3059\u308b\u3068\u2026 apiVersion: apiextensions.k8s.io\/v1 kind: CustomResourceDefinition metadata: name: backups.mycompany.com spec: group: mycompany.com versions: - name: v1 served: true storage: true schema: openAPIV3Schema: type: object scope: Namespaced names: plural: backups singular: backup kind: Backup \u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30de\u30f3\u30c9\u3067\u72ec\u81ea\u30ea\u30bd\u30fc\u30b9\u3092\u4f5c\u6210\u30fb\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a kubectl get backups kubectl describe backup sample-backup kubectl apply -f my-backup.yaml \ud83d\udcda 3. CRD\u3068\u30ab\u30b9\u30bf\u30e0\u30ea\u30bd\u30fc\u30b9\u306e\u95a2\u4fc2 \u7528\u8a9e\u8aac\u660eCRD\u65b0\u3057\u3044\u7a2e\u985e\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u300c\u8a2d\u8a08\u56f3\u300dCustom ResourceCRD\u306b\u57fa\u3065\u3044\u3066\u5b9f\u969b\u306b\u4f5c\u6210\u3055\u308c\u305f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff08YAML\u3067\u7ba1\u7406\uff09 \u305f\u3068\u3048\u3070\u3001\u300c\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u300d\u3068\u3044\u3046\u6982\u5ff5\u3092 Kubernetes \u306b\u5c0e\u5165\u3057\u305f\u3044\u5834\u5408\uff1a CRD = Backup \u3068\u3044\u3046\u7a2e\u985e\u306e\u30ea\u30bd\u30fc\u30b9\u3092Kubernetes\u306b\u8ffd\u52a0 Custom Resource = backup.yaml \u3067\u4f5c\u6210\u3057\u305f\u300csample-backup\u300d\u306a\u3069\u306e\u500b\u5225\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8 \u2699\ufe0f 4. \u5b9f\u7528\u4f8b\uff1aCRD\u3092\u4f7f\u3046\u3068\u3069\u3046\u306a\u308b\uff1f CRD\u3092\u4f7f\u3046\u3068\u3001\u81ea\u5206\u305f\u3061\u306b\u3068\u3063\u3066\u610f\u5473\u306e\u3042\u308b\u62bd\u8c61\u7684\u306a\u64cd\u4f5c\u3092 Kubernetes \u4e0a\u3067\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 \u4f8b\uff1a apiVersion: mycompany.com\/v1 kind: Backup metadata: name: daily-backup spec: schedule: \\\"0 2 * * *\\\" target: \\\"mysql\\\" \u3053\u306e\u3088\u3046\u306a\u5b9a\u7fa9\u3092 Kubernetes \u306b apply \u3059\u308b\u3053\u3068\u3067\u3001\u300c\u6bce\u65e52\u6642\u306bMySQL\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3059\u308b\u300d\u3068\u3044\u3046\u8a2d\u5b9a\u3092Kubernetes\u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u306a\u65b9\u6cd5\u3067\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 \ud83e\udde0 5. CRD\u306f\u5358\u72ec\u3067\u306f\u52d5\u304b\u306a\u3044\uff08\uff0bController\u304c\u5fc5\u8981\uff09 CRD\u3092\u4f7f\u3063\u3066\u65b0\u3057\u3044\u30ea\u30bd\u30fc\u30b9\u3092\u5b9a\u7fa9\u3057\u305f\u3060\u3051\u3067\u306f\u3001Kubernetes\u306f\u305d\u306e\u610f\u5473\u3092\u7406\u89e3\u3057\u307e\u305b\u3093\u3002 \u305d\u3053\u3067\u5fc5\u8981\u306b\u306a\u308b\u306e\u304c\u300cController\uff08\u5236\u5fa1\u30d7\u30ed\u30b0\u30e9\u30e0\uff09\u300d\u3067\u3059\u3002 Controller\u306f\u3001CRD\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u306e\u72b6\u614b\u3092\u76e3\u8996\u3057\u3001\u73fe\u5b9f\u4e16\u754c\u306e\u64cd\u4f5c\uff08Pod\u306e\u4f5c\u6210\u3084S3\u3078\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306a\u3069\uff09\u3092\u5b9f\u884c\u3057\u3066\u304f\u308c\u307e\u3059\u3002 \u27a1 \u3053\u306e Controller \u3068 CRD \u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f5c\u308b\u306e\u304c\u300cOperator\uff08\u524d\u7ae0\uff09\u300d\u3067\u3059\u3002 \ud83d\udd0d 6. \u307e\u3068\u3081 CRD\u306f\u300cKubernetes\u306b\u65b0\u3057\u3044\u30ea\u30bd\u30fc\u30b9\u306e\u578b\u3092\u8ffd\u52a0\u3059\u308b\u5b9a\u7fa9\u300d kubectl \u3067\u30ab\u30b9\u30bf\u30e0\u30ea\u30bd\u30fc\u30b9\u3092\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u308b \u5358\u4f53\u3067\u306f\u52d5\u4f5c\u305b\u305a\u3001Controller\u3068\u30bb\u30c3\u30c8\u3067\u4f7f\u3046 Operator\u306f CRD + Controller \u3092\u5408\u308f\u305b\u305f\u9ad8\u5ea6\u306a\u81ea\u52d5\u5316\u30c4\u30fc\u30eb\", \"Japanese Female\");\n                }\n            };\n        <\/script>\n    <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 1. CRD\u3068\u306f\uff1f<\/h3>\n\n\n\n<p>CRD\uff08Custom Resource Definition\uff09<strong>\u3068\u306f\u3001Kubernetes\u306b<\/strong>\u72ec\u81ea\u306e\u30ea\u30bd\u30fc\u30b9\uff08\u30ab\u30b9\u30bf\u30e0\u30ea\u30bd\u30fc\u30b9\uff09\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u5b9a\u7fa9\u30d5\u30a1\u30a4\u30eb\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070 Kubernetes \u306f\u6a19\u6e96\u3067 <code>Pod<\/code> \u3084 <code>Service<\/code> \u306a\u3069\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u300cMyApp\u300d\u300cBackup\u300d\u300cDatabaseCluster\u300d\u306a\u3069\u3001\u81ea\u5206\u305f\u3061\u306b\u3068\u3063\u3066\u610f\u5473\u306e\u3042\u308b<strong>\u65b0\u3057\u3044\u7a2e\u985e\u306e\u30ea\u30bd\u30fc\u30b9<\/strong>\u3092\u5b9a\u7fa9\u3057\u3066\u6271\u3044\u305f\u3044\u5834\u9762\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u3068\u304d\u306b\u5fc5\u8981\u306b\u306a\u308b\u306e\u304c\u3001\u3053\u306e CRD \u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83e\udde9 2. CRD\u306e\u5f79\u5272\u3068\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p>CRD \u3092 Kubernetes \u30af\u30e9\u30b9\u30bf\u306b\u767b\u9332\u3059\u308b\u3068\u3001\u305d\u306e\u77ac\u9593\u304b\u3089 Kubernetes \u306b<strong>\u65b0\u3057\u3044 API \u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/strong>\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a CRD \u3092\u5b9a\u7fa9\u3059\u308b\u3068\u2026<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-scss\" data-lang=\"SCSS\"><code>apiVersion: apiextensions.k8s.io\/v1\nkind: CustomResourceDefinition\nmetadata:\n  name: backups.mycompany.com\nspec:\n  group: mycompany.com\n  versions:\n    - name: v1\n      served: true\n      storage: true\n      schema:\n        openAPIV3Schema:\n          type: object\n  scope: Namespaced\n  names:\n    plural: backups\n    singular: backup\n    kind: Backup<\/code><\/pre><\/div>\n\n\n\n<p>\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30de\u30f3\u30c9\u3067<strong>\u72ec\u81ea\u30ea\u30bd\u30fc\u30b9\u3092\u4f5c\u6210\u30fb\u7ba1\u7406<\/strong>\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>kubectl get backups\nkubectl describe backup sample-backup\nkubectl apply -f my-backup.yaml<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcda 3. CRD\u3068\u30ab\u30b9\u30bf\u30e0\u30ea\u30bd\u30fc\u30b9\u306e\u95a2\u4fc2<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u7528\u8a9e<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td><strong>CRD<\/strong><\/td><td>\u65b0\u3057\u3044\u7a2e\u985e\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u300c\u8a2d\u8a08\u56f3\u300d<\/td><\/tr><tr><td><strong>Custom Resource<\/strong><\/td><td>CRD\u306b\u57fa\u3065\u3044\u3066\u5b9f\u969b\u306b\u4f5c\u6210\u3055\u308c\u305f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff08YAML\u3067\u7ba1\u7406\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u305f\u3068\u3048\u3070\u3001\u300c\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u300d\u3068\u3044\u3046\u6982\u5ff5\u3092 Kubernetes \u306b\u5c0e\u5165\u3057\u305f\u3044\u5834\u5408\uff1a<\/p>\n\n\n\n<ul>\n<li>CRD = <code>Backup<\/code> \u3068\u3044\u3046\u7a2e\u985e\u306e\u30ea\u30bd\u30fc\u30b9\u3092Kubernetes\u306b\u8ffd\u52a0<\/li>\n\n\n\n<li>Custom Resource = <code>backup.yaml<\/code> \u3067\u4f5c\u6210\u3057\u305f\u300csample-backup\u300d\u306a\u3069\u306e\u500b\u5225\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2699\ufe0f 4. \u5b9f\u7528\u4f8b\uff1aCRD\u3092\u4f7f\u3046\u3068\u3069\u3046\u306a\u308b\uff1f<\/h3>\n\n\n\n<p>CRD\u3092\u4f7f\u3046\u3068\u3001\u81ea\u5206\u305f\u3061\u306b\u3068\u3063\u3066<strong>\u610f\u5473\u306e\u3042\u308b\u62bd\u8c61\u7684\u306a\u64cd\u4f5c<\/strong>\u3092 Kubernetes \u4e0a\u3067\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-scss\" data-lang=\"SCSS\"><code>apiVersion: mycompany.com\/v1\nkind: Backup\nmetadata:\n  name: daily-backup\nspec:\n  schedule: &quot;0 2 * * *&quot;\n  target: &quot;mysql&quot;<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u5b9a\u7fa9\u3092 Kubernetes \u306b apply \u3059\u308b\u3053\u3068\u3067\u3001\u300c\u6bce\u65e52\u6642\u306bMySQL\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3059\u308b\u300d\u3068\u3044\u3046\u8a2d\u5b9a\u3092<strong>Kubernetes\u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u306a\u65b9\u6cd5\u3067\u7ba1\u7406\u3067\u304d\u308b<\/strong>\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83e\udde0 5. CRD\u306f\u5358\u72ec\u3067\u306f\u52d5\u304b\u306a\u3044\uff08\uff0bController\u304c\u5fc5\u8981\uff09<\/h3>\n\n\n\n<p>CRD\u3092\u4f7f\u3063\u3066\u65b0\u3057\u3044\u30ea\u30bd\u30fc\u30b9\u3092\u5b9a\u7fa9\u3057\u305f\u3060\u3051\u3067\u306f\u3001Kubernetes\u306f\u305d\u306e\u610f\u5473\u3092\u7406\u89e3\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u5fc5\u8981\u306b\u306a\u308b\u306e\u304c\u300c<strong>Controller<\/strong>\uff08\u5236\u5fa1\u30d7\u30ed\u30b0\u30e9\u30e0\uff09\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<p>Controller\u306f\u3001CRD\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u306e\u72b6\u614b\u3092\u76e3\u8996\u3057\u3001\u73fe\u5b9f\u4e16\u754c\u306e\u64cd\u4f5c\uff08Pod\u306e\u4f5c\u6210\u3084S3\u3078\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306a\u3069\uff09\u3092\u5b9f\u884c\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u27a1 \u3053\u306e Controller \u3068 CRD \u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f5c\u308b\u306e\u304c\u300cOperator\uff08\u524d\u7ae0\uff09\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd0d 6. \u307e\u3068\u3081<\/h3>\n\n\n\n<ul>\n<li>CRD\u306f\u300c<strong>Kubernetes\u306b\u65b0\u3057\u3044\u30ea\u30bd\u30fc\u30b9\u306e\u578b\u3092\u8ffd\u52a0\u3059\u308b\u5b9a\u7fa9<\/strong>\u300d<\/li>\n\n\n\n<li><code>kubectl<\/code> \u3067\u30ab\u30b9\u30bf\u30e0\u30ea\u30bd\u30fc\u30b9\u3092\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u308b<\/li>\n\n\n\n<li>\u5358\u4f53\u3067\u306f\u52d5\u4f5c\u305b\u305a\u3001<strong>Controller\u3068\u30bb\u30c3\u30c8\u3067\u4f7f\u3046<\/strong><\/li>\n\n\n\n<li>Operator\u306f CRD + Controller \u3092\u5408\u308f\u305b\u305f\u9ad8\u5ea6\u306a\u81ea\u52d5\u5316\u30c4\u30fc\u30eb<\/li>\n<\/ul>\n\n\n\n<p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[56],"_links":{"self":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1603"}],"collection":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/comments?post=1603"}],"version-history":[{"count":1,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1603\/revisions"}],"predecessor-version":[{"id":1604,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1603\/revisions\/1604"}],"wp:attachment":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/media?parent=1603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/categories?post=1603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/tags?post=1603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}