{"id":36054,"date":"2023-04-18T20:25:27","date_gmt":"2023-08-11T18:31:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%95%b4%e7%90%86kubernetes%e7%9a%84crd%e5%91%a8%e5%9b%b4%e3%80%82\/"},"modified":"2024-04-30T00:08:41","modified_gmt":"2024-04-29T16:08:41","slug":"%e6%95%b4%e7%90%86kubernetes%e7%9a%84crd%e5%91%a8%e5%9b%b4%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%95%b4%e7%90%86kubernetes%e7%9a%84crd%e5%91%a8%e5%9b%b4%e3%80%82\/","title":{"rendered":"\u6574\u7406Kubernetes\u7684CRD\u5468\u56f4"},"content":{"rendered":"<h1>\u6574\u5408Kubernetes\u81ea\u5b9a\u4e49\u8d44\u6e90\uff08CRD\uff09\u3002<\/h1>\n<p>Kubernetes\u4e2d\u6709\u4e00\u4e2a\u540d\u4e3aCustom Resource Definitions\uff08CRD\uff09\u7684\u529f\u80fd\u3002CRD\u53ef\u4ee5\u6269\u5c55Kubernetes API\u4ee5\u5b9a\u4e49\u81ea\u5df1\u7684\u8d44\u6e90\u3002Kubernetes\u8d44\u6e90\u6307\u7684\u662f\u50cfDeployment\u6216Pod\u8fd9\u6837\u7684\u4e1c\u897f\uff0c\u4f46\u662f\u4f7f\u7528CRD\uff0c\u6211\u4eec\u53ef\u4ee5\u81ea\u5df1\u5b9a\u4e49\u548c\u5b9e\u73b0\u4e0eDeployment\u6216Pod\u540c\u7b49\u7ea7\u7684\u8d44\u6e90\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u6574\u7406CRD\u7684\u6982\u5ff5\u548c\u5de5\u5177\uff08\u57fa\u4e8e2018\/12\/24\u7684\u4fe1\u606f\uff09\u3002<\/p>\n<h2>\u8d44\u6e90\u548c\u5bf9\u8c61<\/h2>\n<p>\u5728\u8fdb\u5165CRD\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u6574\u7406\u4e00\u4e0bKubernetes\u7684\u8d44\u6e90\u548c\u5bf9\u8c61\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d271637434c4406c3a9ee\/4-0.png\" alt=\"image.png\" \/><\/div>\n<h3>\u8d44\u6e90<\/h3>\n<p>\u8d44\u6e90\u662f\u6307\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\u7684\u6982\u5ff5\u3002\u4f8b\u5982\uff0cDeployment\u548cPods\u90fd\u662f\u8d44\u6e90\u3002\u8d44\u6e90\u5177\u6709Kubernetes API\uff0c\u5e76\u4e14\u4f5c\u4e3a\u5b9e\u9645\u90e8\u7f72\u7684\u5bf9\u8c61\uff0cPods\u4f5c\u4e3a\u8d44\u6e90\u5b58\u50a8\u5728\u8d44\u6e90\u4e2d\u3002\u5b9e\u9645\u4e0a\u7c7b\u4f3c\u4e8e\u7c7b\u548c\u5b9e\u4f8b\u7684\u6982\u5ff5\uff08\u8d44\u6e90\u662f\u7c7b\uff0c\u5bf9\u8c61\u662f\u5b9e\u4f8b\uff09\u3002<br \/>\n\u4ee5\u4e0b\u662f\u4e3b\u8981\u7684\u8d44\u6e90\u7c7b\u578b\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Nodes<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Namespaces<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Configmaps<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Secrets<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Roles<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Rolebindings<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Pods<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Replicasets<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Deployments<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Daemonsets<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Jobs<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Cronjobs<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Services<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Ingresses<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Persistentvolumes<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Persistentvolumeclaims<\/ul>\n<h3>\u7269\u54c1<\/h3>\n<p>\u5bf9\u8c61\u662f\u6301\u7eed\u5b58\u5728\u7684\u5b9e\u4f53\uff0c\u7528\u4e8e\u5b9a\u4e49Kubernetes\u96c6\u7fa4\u7684\u72b6\u6001\u3002\u7b80\u5355\u6765\u8bf4\uff0c\u5b83\u662f\u6307\u5df2\u90e8\u7f72\u7684Pod\u548cService\u3002\u5bf9\u8c61\u7684\u72b6\u6001\u53ef\u4ee5\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u30b3\u30f3\u30c6\u30ca\u30fb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u305d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u30ea\u30bd\u30fc\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u305d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u7a3c\u50cd\u30dd\u30ea\u30b7\u30fc\uff08\u30ea\u30b9\u30bf\u30fc\u30c8\u3001\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3001\u30d5\u30a9\u30fc\u30eb\u30c8\u30c8\u30ec\u30e9\u30f3\u30b9\uff09<\/ul>\n<p>\u5f53\u7528\u6237\u5c06Pods\u3001Deployment\u548cService\u90e8\u7f72\u5230Kubernetes\u65f6\uff0c\u901a\u5e38\u4f1a\u4f7f\u7528yaml\u6587\u4ef6\u5411Kubernetes API\u5b9a\u4e49\u6240\u9700\u7684\u5bf9\u8c61\u72b6\u6001\uff0c\u5e76\u4f7f\u7528kubectl apply -f sample.yaml\u7684\u65b9\u5f0f\u5b9e\u73b0\u6240\u671f\u671b\u7684\u72b6\u6001\u3002Kubernetes\u6839\u636e\u8fd9\u4e2ayaml\u6587\u4ef6\u90e8\u7f72\u5bf9\u8c61\uff0c\u5e76\u901a\u8fc7\u64cd\u4f5c\u5bf9\u8c61\u6765\u7ef4\u62a4\u6240\u9700\u7684\u72b6\u6001\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0ckubectl\u8bbf\u95ee\u548c\u6267\u884c\u7684\u662f\u96c6\u7fa4\u7684Kubernetes API\u3002<\/p>\n<p>\u5bf9\u8c61\u7684\u6240\u9700\u72b6\u6001\u5728yaml\u4e2d\u88ab\u5b9a\u4e49\u4e3aspec\u3002Kubernetes\u7684\u4efb\u52a1\u662f\u7ef4\u62a4\u6307\u5b9a\u5728spec\u4e2d\u5b9a\u4e49\u7684\u72b6\u6001\u3002<\/p>\n<p>\u4ee5\u4e0b\u662fDeployment\u5bf9\u8c61\u7684\u793a\u4f8b\uff0c\u9996\u5148\u5728\u7b2c\u4e00\u4e2aspec\u4e0b\u5b9a\u4e49\u4e86Deployment\u7684\u72b6\u6001\uff0c\u7136\u540e\u5728\u7b2c\u4e8c\u4e2aspec\u4e2d\u5b9a\u4e49\u4e86Deployment\u5185Pods\u7684\u72b6\u6001\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">apps\/v1<\/span> <span class=\"c1\"># for versions before 1.9.0 use apps\/v1beta2<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Deployment<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">nginx-deployment<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">matchLabels<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">app<\/span><span class=\"pi\">:<\/span> <span class=\"s\">nginx<\/span>\r\n  <span class=\"na\">replicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">2<\/span> <span class=\"c1\"># tells deployment to run 2 pods matching the template<\/span>\r\n  <span class=\"na\">template<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"na\">app<\/span><span class=\"pi\">:<\/span> <span class=\"s\">nginx<\/span>\r\n    <span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">containers<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">nginx<\/span>\r\n        <span class=\"na\">image<\/span><span class=\"pi\">:<\/span> <span class=\"s\">nginx:1.7.9<\/span>\r\n        <span class=\"na\">ports<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"na\">containerPort<\/span><span class=\"pi\">:<\/span> <span class=\"m\">80<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u8bbe\u7f6e\u540e\uff0cKubernetes\u96c6\u7fa4\u5c06\u4f7f\u7528nginx:1.7.9\u5bb9\u5668\u6620\u50cf\u521b\u5efa\u4e24\u4e2aPod\uff0c\u5206\u522b\u572880\u7aef\u53e3\u4e0a\u53d1\u5e03\u3002<\/p>\n<h2>\u5b9a\u5236\u8d44\u6e90<\/h2>\n<p>\u9664\u4e86\u5728Kubernetes\u4e2d\u63d0\u4f9b\u7684\u6a19\u6e96\u8cc7\u6e90\uff0c\u60a8\u9084\u53ef\u4ee5\u81ea\u884c\u5b9a\u7fa9\u8cc7\u6e90\u3002\u9019\u7a2e\u81ea\u5b9a\u7fa9\u7684\u8cc7\u6e90\u88ab\u7a31\u70baCustom Resource\uff0c\u4e26\u901a\u904e\u64f4\u5c55Kubernetes API\u4f86\u5be6\u73fe\u3002Custom Resource\u53ea\u662f\u4e00\u500b\u7528\u65bc\u5b58\u5132\u7d50\u69cb\u5316\u6578\u64da\u7684\u5bb9\u5668\uff0c\u5be6\u969b\u64cd\u4f5c\u9700\u8981\u5be6\u73feCustom Controller\u3002Custom Resource\u4f7f\u7528Kubernetes API\uff08\u4e5f\u53ef\u4f7f\u7528kubectl\u547d\u4ee4\uff09\u901a\u904e\u7ba1\u7406\u5c0d\u8c61\u4f86\u7ba1\u7406\u8cc7\u6e90\uff0c\u8207\u5176\u4ed6\u8cc7\u6e90\u76f8\u540c\u3002<\/p>\n<h3>\u5b9a\u5236\u63a7\u5236\u5668<\/h3>\n<p>Custom Controller\uff08\u81ea\u5b9a\u4e49\u63a7\u5236\u5668\uff09\u662f\u7528\u4e8e\u63a7\u5236\u81ea\u5b9a\u4e49\u8d44\u6e90\u7684\u58f0\u660e\u5f0fAPI\u3002\u58f0\u660e\u5f0fAPI\u5141\u8bb8\u7528\u6237\u901a\u8fc7\u58f0\u660e\u5bf9\u8c61\u7684desired state\uff08\u671f\u671b\u72b6\u6001\uff09\u6765\u8fdb\u884c\u90e8\u7f72\u548c\u7ef4\u62a4\u3002\u5b9e\u9645\u64cd\u4f5c\u548c\u6307\u4ee4\u662f\u7531Custom Controller\u6765\u6267\u884c\u7684\u3002Custom Controller\u4f1a\u6301\u7eed\u64cd\u4f5c\u5bf9\u8c61\uff0c\u4f7f\u5176\u72b6\u6001\u4e0edesired state\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n<p>Custom Controller\u672c\u8eab\u662f\u4f7f\u7528Golang\u5728client-go\u4e2d\u5b9e\u73b0\u7684\uff0c\u5e76\u901a\u8fc7code-generator\u751f\u6210\u5ba2\u6237\u7aef\u5e93\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d271637434c4406c3a9ee\/18-0.png\" alt=\"client-go\" \/><\/div>\n<p>Kubernetes API\u3001Custom Controller\u3001client-go\u4e4b\u95f4\u7684\u5173\u7cfb\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d271637434c4406c3a9ee\/20-0.jpeg\" alt=\"kcc\" \/><\/div>\n<p>\u901a\u8fc7client-go\uff0cCustom Controller\u64cd\u4f5cKubernetes API\u3002\u901a\u8fc7\u5c06\u8fd0\u884cCustom Controller\u7684Docker Image\u90e8\u7f72\u4e3aCRD\u7684\u63a7\u5236\u5668\uff0c\u5e76\u4f5c\u4e3aDeployment\u90e8\u7f72\uff0c\u53ef\u4ee5\u4f7fCRD\u7684Custom Controller\u5728Kubernetes\u4e0a\u8fd0\u884c\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d271637434c4406c3a9ee\/22-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u4f7f\u7528\u81ea\u5b9a\u4e49\u8d44\u6e90\u548c\u81ea\u5b9a\u4e49\u63a7\u5236\u5668\uff0c\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5b9a\u4e49\u8d44\u6e90\u548cKubernetes API\uff0c\u4f46\u6709\u4e24\u79cd\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>CRD\uff1a\u53ef\u4ee5\u65e0\u9700\u7f16\u7a0b\u5b9a\u4e49API<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>API Aggregation\uff1a\u9700\u8981\u7f16\u7a0b\uff0c\u4f46\u53ef\u4ee5\u5b9a\u4e49\u66f4\u8be6\u7ec6\u7684API<\/ol>\n<h3>API\u805a\u5408\uff08AA\uff09<\/h3>\n<p>AA\u662fKubernetes API\u7684\u6269\u5c55\u3002AA\u662f\u5728Kubernetes 1.7\u7248\u672c\u4e4b\u540e\u6dfb\u52a0\u7684\u529f\u80fd\uff0ckube-apiserver\u4e2d\u5df2\u6dfb\u52a0\u4e86AA\u7684\u805a\u5408\u5c42\u3002\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0APIService\u5bf9\u8c61\u5e76\u6ce8\u518c\u5230API\u4e2d\uff08\u901a\u8fc7\u8bbe\u7f6e\u81ea\u5b9a\u4e49AA\u7684URL\uff09\uff0c\u805a\u5408\u5c42\u5c06\u8bf7\u6c42\u4f5c\u4e3a\u4ee3\u7406\u8f6c\u53d1\u5230\u6307\u5b9a\u7684URL\u3002<br \/>\nAA\u4f5c\u4e3aPIServer\u7684\u4e00\u90e8\u5206\u8fdb\u884c\u529f\u80fd\u6269\u5c55\u3002\u8981\u4f7f\u7528AA\uff0c\u9700\u8981\u5411APIServer\u6dfb\u52a0\u76f8\u5e94\u7684\u6269\u5c55\u914d\u7f6e\u3002<br \/>\n\u4f7f\u7528apiserver-builder\u6216service-catalog\u8fdb\u884c\u5f00\u53d1\u5c06\u66f4\u52a0\u65b9\u4fbf\u5b9e\u7528\u3002<\/p>\n<h3>\u4e2d\u56fd\u9a7b\u9ece\u5df4\u5ae9\u5927\u4f7f\u9986<\/h3>\n<p>CRD\u662f\u4ee5\u6bd4AA\u66f4\u4fbf\u6377\u5730\u6dfb\u52a0\u81ea\u5b9a\u4e49\u8d44\u6e90\u7684\u65b9\u5f0f\u3002CRD\u53ef\u4ee5\u5728\u4e0d\u5411APIServer\u6dfb\u52a0API\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u5b9e\u73b0\u3002<br \/>\nCRD\u5b9a\u4e49\u4e86\u81ea\u5b9a\u4e49\u8d44\u6e90\uff08\u6b63\u5982\u5176\u540d\u79f0\u6240\u793a\uff09\u3002\u53ef\u4ee5\u4f7f\u7528yaml\u5bf9CRD\u8fdb\u884c\u5b9a\u4e49\u3002<br \/>\n\u4ee5\u4e0b\u662f\u4eceCRD\u6837\u672c\u4e2d\u83b7\u53d6\u7684CRD\u5b9a\u4e49\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\"># crd.yaml<\/span>\r\n<span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">apiextensions.k8s.io\/v1beta1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">CustomResourceDefinition<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">foos.samplecontroller.k8s.io<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">group<\/span><span class=\"pi\">:<\/span> <span class=\"s\">samplecontroller.k8s.io<\/span>\r\n  <span class=\"na\">version<\/span><span class=\"pi\">:<\/span> <span class=\"s\">v1alpha1<\/span>\r\n  <span class=\"na\">names<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Foo<\/span>\r\n    <span class=\"na\">plural<\/span><span class=\"pi\">:<\/span> <span class=\"s\">foos<\/span>\r\n  <span class=\"na\">scope<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Namespaced<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f7f\u7528 foos.samplecontroller.k8s.io \u4f5c\u4e3a\u7ec8\u7ed3\u70b9\u6765\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3a Foo \u7684CRD\u3002\u53ea\u9700\u8981\u6267\u884c kubectl apply -f crd.yaml\uff0c\u5c31\u53ef\u4ee5\u751f\u6210\u4e00\u4e2a\u65b0\u7684 Kubernetes API \u7ec8\u7ed3\u70b9\u3002<br \/>\n\u7531\u4e8eCRD\u4e5f\u662f\u4e00\u79cd\u8d44\u6e90\uff0c\u6240\u4ee5\u4e0a\u8ff0\u64cd\u4f5c\u5c06\u90e8\u7f72\u4e00\u4e2a\u540d\u4e3a Foo \u7684CRD\u5bf9\u8c61\u5230CRD\u8d44\u6e90\u4e2d\u3002<br \/>\n\u60a8\u53ef\u4ee5\u4f7f\u7528 kubectl get crd \u547d\u4ee4\u83b7\u53d6\u5df2\u90e8\u7f72\u7684CRD\u5217\u8868\u3002<\/p>\n<p>\u5728CRD\u5bf9\u8c61Foo\u5df2\u90e8\u7f72\u7684\u60c5\u51b5\u4e0b\uff0c\u4e5f\u53ef\u4ee5\u521b\u5efaFoo\u7684\u81ea\u5b9a\u4e49\u5bf9\u8c61\u3002<br \/>\n\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\"># example-foo.yaml<\/span>\r\n<span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">samplecontroller.k8s.io\/v1alpha1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Foo<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">example-foo<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">deploymentName<\/span><span class=\"pi\">:<\/span> <span class=\"s\">example-foo<\/span>\r\n  <span class=\"na\">replicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">1<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u6267\u884ckubectl apply -f example-foo.yaml\uff0c\u5c06\u5728Foo\u8d44\u6e90\u4e2d\u90e8\u7f72\u4e00\u4e2a\u540d\u4e3aexample-foo\u7684\u5bf9\u8c61\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528&#8221;kubectl get foo&#8221;\u547d\u4ee4\u6765\u83b7\u53d6\u5df2\u90e8\u7f72\u7684 Foo \u7684\u5217\u8868\u3002<\/p>\n<h3>CRD\u7684\u6269\u5c55\u529f\u80fd<\/h3>\n<p>\u5728\u5b9a\u4e49CRD\u65f6\uff0c\u6211\u4eec\u4f1a\u4ecb\u7ecd\u4e00\u4e9b\u6709\u7528\u7684\u529f\u80fd\u3002<\/p>\n<h4>\u6700\u7ec8\u5904\u7406\u5668<\/h4>\n<p>Finalizer\u5b9a\u4e49\u4e86\u5728\u81ea\u5b9a\u4e49\u5bf9\u8c61\u88ab\u5220\u9664\u4e4b\u524d\u6267\u884c\u7684\u5904\u7406\u3002\u901a\u8fc7\u5b9a\u4e49Finalizer\uff0c\u53ef\u4ee5\u5b9a\u4e49\u5728\u6267\u884c\u5b9e\u9645\u5220\u9664\u4e4b\u524d\u5e94\u8be5\u6267\u884c\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u4f7f\u7528&#8221;kubectl delete&#8221;\u5220\u9664\u81ea\u5b9a\u4e49\u5bf9\u8c61\u65f6\u3002\u4f8b\u5982\uff0c\u5728Deployment\u4e2d\uff0c\u5220\u9664Deployment\u4f1a\u5bfc\u81f4Pods\u548cReplicaset\u88ab\u5220\u9664\uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528Finalizer\u6765\u5b9a\u4e49\u5728\u5220\u9664Deployment\u4e4b\u524d\u5220\u9664Pods\u548cReplicaset\uff0c\u4ece\u800c\u5b9e\u73b0\u76f8\u540c\u7684\u64cd\u4f5c\u3002<\/p>\n<h4>\u9a8c\u8bc1<\/h4>\n<p>\u4f60\u53ef\u4ee5\u6839\u636eCRD\u7684\u5b9a\u4e49\uff0c\u4ee5\u4ee5\u4e0b\u65b9\u5f0f\u6dfb\u52a0\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u8bbe\u7f6e\u503c\u9a8c\u8bc1\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">apiextensions.k8s.io\/v1beta1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">CustomResourceDefinition<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">foos.samplecontroller.k8s.io<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">group<\/span><span class=\"pi\">:<\/span> <span class=\"s\">samplecontroller.k8s.io<\/span>\r\n  <span class=\"na\">version<\/span><span class=\"pi\">:<\/span> <span class=\"s\">v1alpha1<\/span>\r\n  <span class=\"na\">names<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Foo<\/span>\r\n    <span class=\"na\">plural<\/span><span class=\"pi\">:<\/span> <span class=\"s\">foos<\/span>\r\n  <span class=\"na\">scope<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Namespaced<\/span>\r\n  <span class=\"na\">validation<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">openAPIV3Schema<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">properties<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">properties<\/span><span class=\"pi\">:<\/span>\r\n            <span class=\"na\">replicas<\/span><span class=\"pi\">:<\/span>\r\n              <span class=\"na\">type<\/span><span class=\"pi\">:<\/span> <span class=\"s\">integer<\/span>\r\n              <span class=\"na\">minimum<\/span><span class=\"pi\">:<\/span> <span class=\"m\">1<\/span>\r\n              <span class=\"na\">maximum<\/span><span class=\"pi\">:<\/span> <span class=\"m\">10<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0c\u53ef\u4ee5\u5c06replicas\u7684\u53ef\u8bbe\u5b9a\u503c\u5b9a\u4e49\u4e3a\u6574\u6570\uff0c\u8303\u56f4\u57281\u523010\u4e4b\u95f4\u3002\u5982\u679c\u4f7f\u7528\u5176\u4ed6\u503c\u6765\u5e94\u7528kubectl\u7684\u81ea\u5b9a\u4e49\u5bf9\u8c61\uff0c\u5219\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002<\/p>\n<ul class=\"post-ul\">OK\u306a\u4f8b\uff1a<\/ul>\n<pre class=\"post-pre\"><code><span class=\"c1\"># example-foo-ok.yaml<\/span>\r\n<span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">samplecontroller.k8s.io\/v1alpha1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Foo<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">example-foo<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">deploymentName<\/span><span class=\"pi\">:<\/span> <span class=\"s\">example-foo<\/span>\r\n  <span class=\"na\">replicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">1<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">NG\u306a\u4f8b1\uff1a<\/ul>\n<pre class=\"post-pre\"><code><span class=\"c1\"># example-foo-ng-1.yaml<\/span>\r\n<span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">samplecontroller.k8s.io\/v1alpha1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Foo<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">example-foo<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">deploymentName<\/span><span class=\"pi\">:<\/span> <span class=\"s\">example-foo<\/span>\r\n  <span class=\"na\">replicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">1.1<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">NG\u306a\u4f8b2\uff1a<\/ul>\n<pre class=\"post-pre\"><code><span class=\"c1\"># example-foo-ng-2.yaml<\/span>\r\n<span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">samplecontroller.k8s.io\/v1alpha1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Foo<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">example-foo<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">deploymentName<\/span><span class=\"pi\">:<\/span> <span class=\"s\">example-foo<\/span>\r\n  <span class=\"na\">replicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">111<\/span>\r\n<\/code><\/pre>\n<h4>\u6253\u5370\u673a<\/h4>\n<p>\u4ece Kubernetes 1.11 \u5f00\u59cb\uff0c\u60a8\u53ef\u4ee5\u5b9a\u4e49\u5728\u4f7f\u7528 kubectl get \u547d\u4ee4\u65f6\u8981\u663e\u793a\u7684\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u53c2\u6570\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u53ea\u663e\u793a kubectl get \u5bf9\u8c61\u540d\u79f0\u3002\u4e3a\u4e86\u663e\u793a\u5176\u4ed6\u53c2\u6570\uff0c\u60a8\u9700\u8981\u5728\u81ea\u5b9a\u4e49\u8d44\u6e90\u5b9a\u4e49\uff08CRD\uff09\u4e2d\u5b9a\u4e49\u663e\u793a\u76ee\u6807\u53c2\u6570\uff0c\u5982\u4e0b\u6240\u793a\u3002<br \/>\n\u4f8b\u5982\uff0c\u901a\u8fc7\u8bbe\u7f6e additionalPrinterColumns\uff0c\u60a8\u53ef\u4ee5\u4f7f kubectl get \u5728\u6807\u51c6\u8f93\u51fa\u4e2d\u663e\u793a\u526f\u672c\u6570\u548c\u65f6\u95f4\u6233\u7b49\u4fe1\u606f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">apiextensions.k8s.io\/v1beta1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">CustomResourceDefinition<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">foos.samplecontroller.k8s.io<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">group<\/span><span class=\"pi\">:<\/span> <span class=\"s\">samplecontroller.k8s.io<\/span>\r\n  <span class=\"na\">version<\/span><span class=\"pi\">:<\/span> <span class=\"s\">v1alpha1<\/span>\r\n  <span class=\"na\">names<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Foo<\/span>\r\n    <span class=\"na\">plural<\/span><span class=\"pi\">:<\/span> <span class=\"s\">foos<\/span>\r\n  <span class=\"na\">scope<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Namespaced<\/span>\r\n  <span class=\"na\">additionalPrinterColumns<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Replicas<\/span>\r\n    <span class=\"na\">type<\/span><span class=\"pi\">:<\/span> <span class=\"s\">integer<\/span>\r\n    <span class=\"na\">description<\/span><span class=\"pi\">:<\/span> <span class=\"s\">The number of jobs launched by the Foo<\/span>\r\n    <span class=\"na\">JSONPath<\/span><span class=\"pi\">:<\/span> <span class=\"s\">.spec.replicas<\/span>\r\n  <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Age<\/span>\r\n    <span class=\"na\">type<\/span><span class=\"pi\">:<\/span> <span class=\"s\">date<\/span>\r\n    <span class=\"na\">JSONPath<\/span><span class=\"pi\">:<\/span> <span class=\"s\">.metadata.creationTimestamp<\/span>\r\n<\/code><\/pre>\n<h4>\u5b50\u8d44\u6e90<\/h4>\n<p>\u6211\u5011\u652f\u63f4\/status\u548c\/scale\u9019\u5169\u500b\u5b50\u8cc7\u6e90\u3002\u5b83\u5011\u4f5c\u70baCRD API\u7aef\u9ede\u7684\u5b50\u8cc7\u6e90\u767c\u63ee\u4f5c\u7528\u3002<br \/>\n\/status\u8868\u793a\u5c0d\u8c61\u7684\u7576\u524d\u72c0\u614b\uff08\u671f\u671b\u72c0\u614b\u5728spec\u4e2d\uff09\u3002\/scale\u8868\u793a\u8907\u88fd\u6578\u91cf\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">apiextensions.k8s.io\/v1beta1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">CustomResourceDefinition<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">foos.samplecontroller.k8s.io<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">group<\/span><span class=\"pi\">:<\/span> <span class=\"s\">samplecontroller.k8s.io<\/span>\r\n  <span class=\"na\">version<\/span><span class=\"pi\">:<\/span> <span class=\"s\">v1alpha1<\/span>\r\n  <span class=\"na\">names<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Foo<\/span>\r\n    <span class=\"na\">plural<\/span><span class=\"pi\">:<\/span> <span class=\"s\">foos<\/span>\r\n  <span class=\"na\">scope<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Namespaced<\/span>\r\n  <span class=\"na\">subresources<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"c1\"># status enables the status subresource.<\/span>\r\n    <span class=\"na\">status<\/span><span class=\"pi\">:<\/span> <span class=\"pi\">{}<\/span>\r\n    <span class=\"c1\"># scale enables the scale subresource.<\/span>\r\n    <span class=\"na\">scale<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"c1\"># specReplicasPath defines the JSONPath inside of a custom resource that corresponds to Scale.Spec.Replicas.<\/span>\r\n      <span class=\"na\">specReplicasPath<\/span><span class=\"pi\">:<\/span> <span class=\"s\">.spec.replicas<\/span>\r\n      <span class=\"c1\"># statusReplicasPath defines the JSONPath inside of a custom resource that corresponds to Scale.Status.Replicas.<\/span>\r\n      <span class=\"na\">statusReplicasPath<\/span><span class=\"pi\">:<\/span> <span class=\"s\">.status.replicas<\/span>\r\n      <span class=\"c1\"># labelSelectorPath defines the JSONPath inside of a custom resource that corresponds to Scale.Status.Selector.<\/span>\r\n      <span class=\"na\">labelSelectorPath<\/span><span class=\"pi\">:<\/span> <span class=\"s\">.status.labelSelector<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u4f7f\u7528\u5b50\u8d44\u6e90\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4ee5\u4e0b\u7c7b\u578b\u7684\u7aef\u70b9\u516c\u5f00\u3002<\/p>\n<pre class=\"post-pre\"><code># status\r\n\/apis\/samplecontroller.k8s.io\/v1alpha1\/namespaces\/default\/foos\/example-foo\/status\r\n\r\n# scale\r\n\/apis\/samplecontroller.k8s.io\/v1alpha1\/namespaces\/default\/foos\/example-foo\/scale\r\n<\/code><\/pre>\n<h2>\u8bf7\u63d0\u4f9b\u53c2\u8003\u94fe\u63a5\u3002<\/h2>\n<h3>CRD\u7684\u89e3\u91ca<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Custom Resource<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Extend the Kubernetes API with CustomResourceDefinitions<\/ul>\n<h3>CRD\u4f8b<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">sample-controller<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Kubernetes\u306eCRD(Custom Resource Definition)\u3068\u30ab\u30b9\u30bf\u30e0\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u306e\u4f5c\u6210<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Kubernetes\u306eCustom Resource Definition(CRD)\u3068Custom Controller<\/ul>\n<h3>\u5ba2\u6237\u7aef-\u524d\u5f80<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">client-go<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Building stuff with the Kubernetes API (Part 4)\u200a\u2014\u200aUsing Go<\/ul>\n<h3>\u4ee3\u7801\u751f\u6210\u5668<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">code-generator<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Kubernetes Deep Dive: Code Generation for CustomResources<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6574\u5408Kubernetes\u81ea\u5b9a\u4e49\u8d44\u6e90\uff08CRD\uff09\u3002 Kubernetes\u4e2d\u6709\u4e00\u4e2a\u540d\u4e3aCustom Resource [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-36054","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>\u6574\u7406Kubernetes\u7684CRD\u5468\u56f4 - 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\/\u6574\u7406kubernetes\u7684crd\u5468\u56f4\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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