{"id":35615,"date":"2022-11-23T02:19:42","date_gmt":"2023-12-31T22:36:38","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86yaml%e6%a0%bc%e5%bc%8f%e7%9a%84kubernetes%e6%b8%85%e5%8d%95%e5%8f%8d%e5%ba%8f%e5%88%97%e5%8c%96%e4%b8%bago%e8%af%ad%e8%a8%80%e5%af%b9%e8%b1%a1%e3%80%82\/"},"modified":"2024-04-29T02:01:59","modified_gmt":"2024-04-28T18:01:59","slug":"%e5%b0%86yaml%e6%a0%bc%e5%bc%8f%e7%9a%84kubernetes%e6%b8%85%e5%8d%95%e5%8f%8d%e5%ba%8f%e5%88%97%e5%8c%96%e4%b8%bago%e8%af%ad%e8%a8%80%e5%af%b9%e8%b1%a1%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86yaml%e6%a0%bc%e5%bc%8f%e7%9a%84kubernetes%e6%b8%85%e5%8d%95%e5%8f%8d%e5%ba%8f%e5%88%97%e5%8c%96%e4%b8%bago%e8%af%ad%e8%a8%80%e5%af%b9%e8%b1%a1%e3%80%82\/","title":{"rendered":"\u5c06YAML\u683c\u5f0f\u7684Kubernetes\u6e05\u5355\u53cd\u5e8f\u5217\u5316\u4e3aGo\u8bed\u8a00\u5bf9\u8c61"},"content":{"rendered":"
\u8fd9\u662f ZOZO Advent Calendar 2023 \u65e5\u5386 Vol.5 \u7684\u7b2c\u4e09\u5929\u7684\u6587\u7ae0\u3002<\/div>\n

\u4ee5\u4e0b\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5c06YAML\u683c\u5f0f\u7684Kubernetes\u6e05\u5355\u52a0\u8f7d\u5e76\u53cd\u5e8f\u5217\u5316\u4e3a\u5177\u6709\u76f8\u5e94\u7c7b\u578b\u7684Go\u8bed\u8a00\u5bf9\u8c61\u3002<\/p>\n

\u901a\u8fc7\u4f7f\u7528 k8s.io\/apimachinery \u6a21\u5757\u63d0\u4f9b\u7684 yaml \u5305\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n

\u5b9e\u65bd\u793a\u4f8b\u548c\u89e3\u91ca<\/h1>\n

\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f8b\u5b50\uff0c\u5b83\u8bfb\u53d6\u4ee5YAML\u683c\u5f0f\u7f16\u5199\u7684Pod\u6e05\u5355\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u53cd\u5e8f\u5217\u5316\u4e3a\u5177\u6709core\/v1 Pod\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u7136\u540e\u4f7f\u7528client-go\u4eceGo\u8bed\u8a00\u5bf9\u8c61\u521b\u5efaKubernetes Pod\u5bf9\u8c61\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\u521b\u5efa\u7684Pod\u6709\u4ee5\u4e0b\u4e24\u79cd\u7c7b\u578b\u3002<\/p>\n

    \n
  1. \n
      \u5177\u6709\u539f\u59cb\u6e05\u5355\u5b57\u6bb5\u503c\u7684Pod<\/ol>\n<\/li>\n<\/ol>\n

       <\/p>\n

        \u66f4\u6539\u4e86Pod\u540d\u79f0\u7684\u65b0Pod<\/ol>\n
        package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n\t\"context\"<\/span>\r\n\t\"flag\"<\/span>\r\n\t\"fmt\"<\/span>\r\n\t\"os\"<\/span>\r\n\r\n\tcorev1<\/span> \"k8s.io\/api\/core\/v1\"<\/span>\r\n\tmetav1<\/span> \"k8s.io\/apimachinery\/pkg\/apis\/meta\/v1\"<\/span>\r\n\t\"k8s.io\/apimachinery\/pkg\/runtime\/serializer\/json\"<\/span>\r\n\t\"k8s.io\/apimachinery\/pkg\/runtime\/serializer\/yaml\"<\/span>\r\n\t\"k8s.io\/client-go\/kubernetes\"<\/span>\r\n\t\"k8s.io\/client-go\/kubernetes\/scheme\"<\/span>\r\n\t\"k8s.io\/client-go\/tools\/clientcmd\"<\/span>\r\n)<\/span>\r\n\r\nvar<\/span> kubeconfig<\/span> string<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n\t\/\/ YAML\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u306e\u8aad\u307f\u8fbc\u307f<\/span>\r\n\tpath<\/span> :=<\/span> \"sample_pod.yaml\"<\/span>\r\n\r\n\tdata<\/span>,<\/span> err<\/span> :=<\/span> os<\/span>.<\/span>ReadFile<\/span>(<\/span>path<\/span>)<\/span>\r\n\tif<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n\t\tfmt<\/span>.<\/span>Println<\/span>(<\/span>err<\/span>)<\/span>\r\n\t\tos<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ \u30b7\u30ea\u30a2\u30e9\u30a4\u30b6\u306e\u4f5c\u6210<\/span>\r\n\tjsonSerializer<\/span> :=<\/span> json<\/span>.<\/span>NewSerializerWithOptions<\/span>(<\/span>\r\n\t\tjson<\/span>.<\/span>SimpleMetaFactory<\/span>{},<\/span>\r\n\t\tnil<\/span>,<\/span>\r\n\t\tscheme<\/span>.<\/span>Scheme<\/span>,<\/span>\r\n\t\tjson<\/span>.<\/span>SerializerOptions<\/span>{},<\/span>\r\n\t)<\/span>\r\n\tyamlSerializer<\/span> :=<\/span> yaml<\/span>.<\/span>NewDecodingSerializer<\/span>(<\/span>jsonSerializer<\/span>)<\/span>\r\n\r\n\t\/\/ \u8aad\u307f\u8fbc\u3093\u3060YAML\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u306e\u30d0\u30a4\u30c8\u5217\u3092corev1.Pod\u578b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba<\/span>\r\n\tvar<\/span> original<\/span> corev1<\/span>.<\/span>Pod<\/span>\r\n\tif<\/span> _<\/span>,<\/span> _<\/span>,<\/span> err<\/span> :=<\/span> yamlSerializer<\/span>.<\/span>Decode<\/span>(<\/span>data<\/span>,<\/span> nil<\/span>,<\/span> &<\/span>original<\/span>);<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n\t\tfmt<\/span>.<\/span>Println<\/span>(<\/span>err<\/span>)<\/span>\r\n\t\tos<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ Pod\u3092\u4f5c\u6210\u3059\u308b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u4f5c\u6210<\/span>\r\n\tflag<\/span>.<\/span>StringVar<\/span>(<\/span>&<\/span>kubeconfig<\/span>,<\/span> \"kubeconfig\"<\/span>,<\/span> \"\"<\/span>,<\/span> \"kubeconfig path\"<\/span>)<\/span>\r\n\tflag<\/span>.<\/span>Parse<\/span>()<\/span>\r\n\tconfig<\/span>,<\/span> _<\/span> :=<\/span> clientcmd<\/span>.<\/span>BuildConfigFromFlags<\/span>(<\/span>\"\"<\/span>,<\/span> kubeconfig<\/span>)<\/span>\r\n\tclientset<\/span>,<\/span> _<\/span> :=<\/span> kubernetes<\/span>.<\/span>NewForConfig<\/span>(<\/span>config<\/span>)<\/span>\r\n\r\n\t\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089sample-original Pod\u3092\u4f5c\u6210<\/span>\r\n\t_<\/span>,<\/span> err<\/span> =<\/span> clientset<\/span>.<\/span>CoreV1<\/span>()<\/span>.<\/span>Pods<\/span>(<\/span>\"default\"<\/span>)<\/span>.<\/span>Create<\/span>(<\/span>context<\/span>.<\/span>TODO<\/span>(),<\/span> &<\/span>original<\/span>,<\/span> metav1<\/span>.<\/span>CreateOptions<\/span>{})<\/span>\r\n\r\n\tif<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n\t\tfmt<\/span>.<\/span>Println<\/span>(<\/span>err<\/span>)<\/span>\r\n\t\tos<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ sample-original\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ePod\u540d\u3092\u5909\u66f4\u3057\u305f\u65b0\u898f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210<\/span>\r\n\tupdated<\/span> :=<\/span> original<\/span>.<\/span>DeepCopy<\/span>()<\/span>\r\n\tupdated<\/span>.<\/span>ObjectMeta<\/span>.<\/span>Name<\/span> =<\/span> \"sample-updated\"<\/span>\r\n\r\n\t\/\/ Pod\u540d\u3092\u5909\u66f4\u3057\u305f\u65b0\u898f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089sample-original Pod\u3092\u4f5c\u6210<\/span>\r\n\t_<\/span>,<\/span> err<\/span> =<\/span> clientset<\/span>.<\/span>CoreV1<\/span>()<\/span>.<\/span>Pods<\/span>(<\/span>\"default\"<\/span>)<\/span>.<\/span>Create<\/span>(<\/span>context<\/span>.<\/span>TODO<\/span>(),<\/span> updated<\/span>,<\/span> metav1<\/span>.<\/span>CreateOptions<\/span>{})<\/span>\r\n\r\n\tif<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n\t\tfmt<\/span>.<\/span>Println<\/span>(<\/span>err<\/span>)<\/span>\r\n\t\tos<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n\t}<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
        \u8bfb\u53d6\u7684YAML\u6e05\u5355\u76ee\u6807\u5982\u4e0b\u3002<\/p>\n
        apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Pod<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> original-sample<\/span>\r\n  namespace<\/span>:<\/span> default<\/span>\r\nspec<\/span>:<\/span>\r\n  containers<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span> sleep-container<\/span>\r\n    image<\/span>:<\/span> alpine<\/span>\r\n    command<\/span>:<\/span> [<\/span>\"<\/span>sleep\"<\/span>,<\/span> \"<\/span>3600\"<\/span>]<\/span>\r\n\r\n<\/code><\/pre>\n
        \u4ee5\u4e0b\u662f\u5bf9deserialize.go\u7684\u5b9e\u73b0\u8fdb\u884c\u8bf4\u660e\u3002<\/p>\n
        []\u5b57\u8282 \u2192 \u5bf9corev1.Pod\u7684\u53cd\u5e8f\u5217\u5316<\/h2>\n
        \u5c06\u5b57\u8282\u5217(byte\u5217)\u53cd\u5e8f\u5217\u5316\u4e3acorev1.Pod\u7c7b\u578b\u7684\u5bf9\u8c61\u662f\u5728yamlSerializer\u5bf9\u8c61\u7684Decode\u65b9\u6cd5\u4e2d\u5b8c\u6210\u7684\u3002
        \nyamlSerializer\u5bf9\u8c61\u7684Decode\u65b9\u6cd5\u4f1a\u5c06\u63a5\u6536\u5230\u7684YAML\u8f6c\u6362\u4e3aJSON\uff0c\u5e76\u8c03\u7528apimachinery\/pkg\/runtime\/serializer\/json\u5305\u4e2dSerializer\u7c7b\u578b\u7684Decode\u65b9\u6cd5\u3002
        \n\u5982\u679c\u5bf9Decode\u7684\u5177\u4f53\u5b9e\u73b0\u611f\u5174\u8da3\uff0c\u53ef\u4ee5\u53c2\u8003k8s.io\/apimachinery\/pkg\/runtime\/serializer\/json\u5305\u4e2d\u7684Decode\u65b9\u6cd5\u3002<\/p>\n
        \u8c03\u7528yaml.NewDecodingSerializer\u51fd\u6570\u6765\u521d\u59cb\u5316yamlSerializer\uff0c\u5e76\u5c06jsonSerializer\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u3002
        \n\u800c\u5728\u521d\u59cb\u5316jsonSerializer\u65f6\uff0c\u8c03\u7528\u4e86k8s.io\/apimachinery\/pkg\/runtime\/serializer\/json\u5305\u4e2d\u7684NewSerializerWithOptions\u51fd\u6570\u3002
        \n\u8be5\u51fd\u6570\u7684\u5b9e\u73b0\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
        \/\/ NewSerializerWithOptions creates a JSON\/YAML serializer that handles encoding versioned objects into the proper JSON\/YAML<\/span>\r\n\/\/ form. If typer is not nil, the object has the group, version, and kind fields set. Options are copied into the Serializer<\/span>\r\n\/\/ and are immutable.<\/span>\r\nfunc<\/span> NewSerializerWithOptions<\/span>(<\/span>meta<\/span> MetaFactory<\/span>,<\/span> creater<\/span> runtime<\/span>.<\/span>ObjectCreater<\/span>,<\/span> typer<\/span> runtime<\/span>.<\/span>ObjectTyper<\/span>,<\/span> options<\/span> SerializerOptions<\/span>)<\/span> *<\/span>Serializer<\/span> {<\/span>\r\n\treturn<\/span> &<\/span>Serializer<\/span>{<\/span>\r\n\t\tmeta<\/span>:<\/span>       meta<\/span>,<\/span>\r\n\t\tcreater<\/span>:<\/span>    creater<\/span>,<\/span>\r\n\t\ttyper<\/span>:<\/span>      typer<\/span>,<\/span>\r\n\t\toptions<\/span>:<\/span>    options<\/span>,<\/span>\r\n\t\tidentifier<\/span>:<\/span> identifier<\/span>(<\/span>options<\/span>),<\/span>\r\n\t}<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        \u53ea\u9700\u8981\u4e00\u79cd\u9009\u9879\uff1a
        \n\u5982\u51fd\u6570\u6587\u6863\u6240\u8ff0\uff0c\u901a\u8fc7\u5728\u7b2c\u4e09\u4e2atyper\u53c2\u6570\u4e2d\u4f20\u9012\u975enil\u503c\uff0c\u521b\u5efa\u7684\u5bf9\u8c61\u5c06\u5177\u6709Group-Version-Kind\u5b57\u6bb5\u3002
        \n\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u6307\u5b9a\u4e86\u8981\u53cd\u5e8f\u5217\u5316\u7684\u8d44\u6e90\u7684scheme\u3002<\/p>\n
        \u5728deserialize.go\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86k8s.io\/client-go\/kubernetes\/scheme\u5305\u4e2d\u7684Scheme\u53d8\u91cf\uff0c\u5e76\u4f20\u9012\u4e86\u5177\u6709corev1.Pod\u7c7b\u578b\u7684scheme\u3002<\/p>\n
        \u65b9\u6848\u53d8\u91cf\u5177\u6709k8s.io\/apimachinery\/pkg\/runtime\/scheme\u5305\u4e2d\u7684Scheme\u7c7b\u578b\uff0c\u800c\u6b64\u7c7b\u578b\u6ee1\u8db3NewSerializerWithOptions\u51fd\u6570\u7684typer\u53c2\u6570\u5e94\u5177\u5907\u7684runtime.ObjectTyper\u63a5\u53e3\u3002<\/p>\n
        \u8fd9\u6bb5\u662f\u5173\u4e8e\u5c06YAML\u683c\u5f0f\u7684Kubernetes\u6e05\u5355\u8f6c\u6362\u4e3acorev1.Pod\u5bf9\u8c61\u7684\u90e8\u5206\u7684\u8bf4\u660e\u3002<\/p>\n
        \u4eceGo\u5bf9\u8c61\u521b\u5efaKubernetes\u5bf9\u8c61\u3002<\/h2>\n
        \u5728deserialize.go\u6587\u4ef6\u4e2d\uff0c\u4ece\u521b\u5efa\u5ba2\u6237\u7aef\u4ee5\u540e\u7684\u5904\u7406\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528client-go\u5e93\u4ece\u914d\u7f6e\u6587\u4ef6\u4e2d\u521b\u5efa\u7684\u5bf9\u8c61\u6765\u521b\u5efaKubernetes\u7684Pod\u5bf9\u8c61\u3002
        \n\u5e76\u4e14\u6211\u4eec\u8fd8\u6839\u636e\u4ece\u914d\u7f6e\u6587\u4ef6\u4e2d\u521b\u5efa\u7684\u5bf9\u8c61\u521b\u5efa\u4e86\u5176\u4ed6\u5bf9\u8c61\uff0c\u5e76\u901a\u8fc7\u4fee\u6539\u90e8\u5206\u5b57\u6bb5\u7684\u503c\u6765\u521b\u5efa\u4e0e\u539f\u59cb\u914d\u7f6e\u6587\u4ef6\u4e0d\u540c\u7684Kubernetes\u7684Pod\u5bf9\u8c61\u3002<\/p>\n
        \u8bf7\u53c2\u8003\u4ee5\u4e0b\u6709\u5173client-go\u7684\u5185\u5bb9\uff0c\u8be5\u8282\u6d89\u53caclient-go\u3001api\u548capimachinery\u7684\u529f\u80fd\u548c\u5173\u7cfb\u3002<\/p>\n
        \u8bf7\u95ee\u60a8\u9700\u8981\u5c06”\u5b9e\u884c\u7ed3\u679c”\u7ffb\u8bd1\u6210\u4e2d\u6587\u5417\uff1f<\/h2>\n
        \u5728deserialize.go\u7684\u6267\u884c\u7ed3\u679c\u4e2d,\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u9884\u671f\u521b\u5efa\u4e86Kubernetes Pod\u5bf9\u8c61\u3002<\/p>\n
        go run deserialize.go --kubeconfig<\/span> $HOME<\/span>\/.kube\/config\r\n\r\nk get po                                                                                                                                                                                                                       \r\nNAME              READY   STATUS    RESTARTS   AGE\r\nsample-original   1\/1     Running   0          47m\r\nsample-updated    1\/1     Running   0          47m\r\n<\/code><\/pre>\n
        \u603b\u7ed3<\/h1>\n
        \u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528yaml\u5305\u63d0\u4f9b\u7684\u529f\u80fd\uff0c\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5c06YAML\u683c\u5f0f\u7684Kubernetes\u6e05\u5355\u52a0\u8f7d\u5e76\u53cd\u5e8f\u5217\u5316\u4e3a\u5177\u6709\u76f8\u5e94\u7c7b\u578b\u7684Go\u8bed\u8a00\u5bf9\u8c61\u3002<\/p>\n
        \u7ffb\u8bd1\u7ed3\u679c\uff1a
        \n\u901a\u8fc7\u4f7f\u7528k8s.io\/apimachinery\u6a21\u5757\u63d0\u4f9b\u7684yaml\u5305\u7684\u529f\u80fd\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u4ee5\u4e0b\u6b65\u9aa4\u6765\u52a0\u8f7d\u5e76\u53cd\u5e8f\u5217\u5316YAML\u683c\u5f0f\u7684Kubernetes\u6e05\u5355\u4e3a\u5177\u5907\u76f8\u5e94\u7c7b\u578b\u7684Go\u8bed\u8a00\u5bf9\u8c61\u3002<\/p>\n
          \n
        1. \n
            \u51c6\u5907\u5177\u6709\u53cd\u5e8f\u5217\u5316\u7c7b\u578b\u4fe1\u606f\u7684\u65b9\u6848\u3002<\/ol>\n<\/li>\n<\/ol>\n
             <\/p>\n
              \n
            1. \n
                \u4f7f\u7528\u51c6\u5907\u597d\u7684\u65b9\u6848\u521b\u5efajsonSerializer\u3002<\/ol>\n<\/li>\n<\/ol>\n
                 <\/p>\n
                  \n
                1. \n
                    \u4ece\u521b\u5efa\u597d\u7684jsonSerializer\u521b\u5efayamlSerializer\u3002<\/ol>\n<\/li>\n<\/ol>\n
                     <\/p>\n
                      \u5728yamlSerializer\u7684Decode\u65b9\u6cd5\u4e2d\uff0c\u6307\u5b9aYAML\u6e05\u5355\u7684\u5b57\u8282\u5e8f\u5217\u548c\u53cd\u5e8f\u5217\u5316\u76ee\u6807\u5bf9\u8c61\u7684\u6307\u9488\u8fdb\u884c\u6267\u884c\u3002<\/ol>\n
                      \u7531\u4e8e\u8f93\u5165\u662f\u5b57\u8282\u5e8f\u5217\uff0c\u56e0\u6b64\u5728\u53cd\u5e8f\u5217\u5316\u8bf7\u6c42\u7684\u4e3b\u4f53\u65f6\uff0c\u4e0d\u4ec5\u9650\u4e8e\u6e05\u5355\u6587\u4ef6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u8bb8\u591a\u60c5\u51b5\u3002<\/p>\n
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                        Kubernetes Programming with Go<\/ul>\n","protected":false},"excerpt":{"rendered":"
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