{"id":35672,"date":"2023-02-01T21:06:07","date_gmt":"2023-03-02T05:36:14","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a4%87%e6%b3%a8%ef%bc%9a%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kubernetes%e7%9a%84java-api%e5%af%b9pod%e8%bf%9b%e8%a1%8c%e6%89%a9%e5%b1%95%e3%80%82\/"},"modified":"2024-04-29T12:39:17","modified_gmt":"2024-04-29T04:39:17","slug":"%e5%a4%87%e6%b3%a8%ef%bc%9a%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kubernetes%e7%9a%84java-api%e5%af%b9pod%e8%bf%9b%e8%a1%8c%e6%89%a9%e5%b1%95%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a4%87%e6%b3%a8%ef%bc%9a%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kubernetes%e7%9a%84java-api%e5%af%b9pod%e8%bf%9b%e8%a1%8c%e6%89%a9%e5%b1%95%e3%80%82\/","title":{"rendered":"\u5907\u6ce8\uff1a\u6211\u5c1d\u8bd5\u4f7f\u7528Kubernetes\u7684Java API\u5bf9Pod\u8fdb\u884c\u6269\u5c55"},"content":{"rendered":"<p>Kubernetes \u306eJava Client \u3068\u3044\u3046\u306e\u304c\u3042\u3063\u305f\u306e\u3067\u3001\u8a66\u3057\u306b pods \u306e\u30b9\u30b1\u30fc\u30eb\u30fb\u30a2\u30a6\u30c8\u3092\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">java.io.IOException<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.custom.V1Patch<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.openapi.ApiClient<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.openapi.ApiException<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.openapi.apis.AppsV1Api<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.openapi.apis.CoreV1Api<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.openapi.models.V1Deployment<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.openapi.models.V1PodList<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.util.ClientBuilder<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.util.KubeConfig<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">io.kubernetes.client.util.PatchUtils<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Test<\/span><span class=\"o\">{<\/span>\r\n    <span class=\"c1\">\/\/ Kubernetes \u95a2\u9023\u306e\u8a2d\u5b9a<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"kd\">final<\/span> <span class=\"kt\">int<\/span> <span class=\"no\">NUMBER_OF_INCREMENT_PODS<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">3<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"kd\">static<\/span> <span class=\"nc\">String<\/span> <span class=\"no\">JSON_PATCH_STRING_PREFIX<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"[{\\\"op\\\":\\\"replace\\\",\\\"path\\\":\\\"\/spec\/replicas\\\",\\\"value\\\":\"<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"kd\">static<\/span> <span class=\"nc\">String<\/span> <span class=\"no\">JSON_PATCH_STRING_SUFFIX<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"}]\"<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"kd\">static<\/span> <span class=\"nc\">String<\/span> <span class=\"no\">K8S_DEPLOYMENT_NAME<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"my-service\"<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"kd\">static<\/span> <span class=\"nc\">String<\/span> <span class=\"no\">K8S_DEPLOYMENT_NAMESPACE<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"default\"<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"kd\">static<\/span> <span class=\"nc\">String<\/span> <span class=\"no\">LABEL_SELECTOR<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"app=my-service\"<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"nc\">Logger<\/span> <span class=\"no\">LOGGER<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Logger<\/span><span class=\"o\">.<\/span><span class=\"na\">getLogger<\/span><span class=\"o\">(<\/span><span class=\"nc\">ScaleKubernetesInsntace<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">.<\/span><span class=\"na\">getName<\/span><span class=\"o\">());<\/span>    \r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">String<\/span> <span class=\"no\">KUBE_CONFIG_PATH<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"$PATH_TO_KUBE_CONFIG\/config\"<\/span><span class=\"o\">;<\/span>\r\n\r\n    <span class=\"o\">...<\/span><span class=\"na\">\u7701\u7565<\/span>\r\n\r\n\t<span class=\"kd\">private<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">implementScaleUpRequest<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">try<\/span> <span class=\"o\">{<\/span>\r\n\t\t\t\t<span class=\"nc\">ApiClient<\/span> <span class=\"n\">apiclient<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">ClientBuilder<\/span><span class=\"o\">.<\/span><span class=\"na\">kubeconfig<\/span><span class=\"o\">(<\/span><span class=\"nc\">KubeConfig<\/span><span class=\"o\">.<\/span><span class=\"na\">loadKubeConfig<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">FileReader<\/span><span class=\"o\">(<\/span><span class=\"no\">KUBE_CONFIG_PATH<\/span><span class=\"o\">))).<\/span><span class=\"na\">build<\/span><span class=\"o\">();<\/span>\r\n\r\n                <span class=\"c1\">\/\/ \u73fe\u5728\u7a3c\u50cd\u3057\u3066\u3044\u308b Pod \u6570\u3092\u53d6\u5f97<\/span>\r\n                <span class=\"nc\">CoreV1Api<\/span> <span class=\"n\">coreApi<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">CoreV1Api<\/span><span class=\"o\">(<\/span><span class=\"n\">apiclient<\/span><span class=\"o\">);<\/span>\r\n                <span class=\"nc\">V1PodList<\/span> <span class=\"n\">list<\/span> <span class=\"o\">=<\/span>\r\n                <span class=\"n\">coreApi<\/span><span class=\"o\">.<\/span><span class=\"na\">listNamespacedPod<\/span><span class=\"o\">(<\/span><span class=\"no\">K8S_DEPLOYMENT_NAMESPACE<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"no\">LABEL_SELECTOR<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">);<\/span>\r\n                <span class=\"no\">LOGGER<\/span><span class=\"o\">.<\/span><span class=\"na\">log<\/span><span class=\"o\">(<\/span><span class=\"nc\">Level<\/span><span class=\"o\">.<\/span><span class=\"na\">INFO<\/span><span class=\"o\">,<\/span> <span class=\"s\">\"Number of running pods: \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">getItems<\/span><span class=\"o\">().<\/span><span class=\"na\">size<\/span><span class=\"o\">());<\/span>\r\n\r\n                <span class=\"c1\">\/\/ \u73fe\u5728\u7a3c\u50cd\u3057\u3066\u3044\u308b Pod \u6570\u306b\u3001NUMBER_OF_INCREMENT_PODS \u3092\u52a0\u7b97<\/span>\r\n                <span class=\"kt\">int<\/span> <span class=\"n\">numberOfNewInstances<\/span> <span class=\"o\">=<\/span> <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">getItems<\/span><span class=\"o\">().<\/span><span class=\"na\">size<\/span><span class=\"o\">()<\/span> <span class=\"o\">+<\/span> <span class=\"no\">NUMBER_OF_INCREMENT_PODS<\/span><span class=\"o\">;<\/span>\r\n                <span class=\"nc\">AppsV1Api<\/span> <span class=\"n\">api<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">AppsV1Api<\/span><span class=\"o\">(<\/span><span class=\"n\">apiclient<\/span><span class=\"o\">);<\/span>\r\n                <span class=\"nc\">String<\/span> <span class=\"n\">patchString<\/span> <span class=\"o\">=<\/span> <span class=\"no\">JSON_PATCH_STRING_PREFIX<\/span> <span class=\"o\">+<\/span> <span class=\"n\">numberOfNewInstances<\/span> <span class=\"o\">+<\/span> <span class=\"no\">JSON_PATCH_STRING_SUFFIX<\/span><span class=\"o\">;<\/span>\r\n                <span class=\"c1\">\/\/ \u30d1\u30c3\u30c1\u3092\u9069\u7528\u3057\u30ec\u30d7\u30ea\u30ab\u6570\u3092\u5897\u52a0<\/span>\r\n                <span class=\"nc\">V1Deployment<\/span> <span class=\"n\">deploy<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">PatchUtils<\/span><span class=\"o\">.<\/span><span class=\"na\">patch<\/span><span class=\"o\">(<\/span><span class=\"nc\">V1Deployment<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">,<\/span>\r\n                    <span class=\"o\">()<\/span> <span class=\"o\">-&gt;<\/span> \r\n                        <span class=\"n\">api<\/span><span class=\"o\">.<\/span><span class=\"na\">patchNamespacedDeploymentCall<\/span><span class=\"o\">(<\/span>\r\n                            <span class=\"no\">K8S_DEPLOYMENT_NAME<\/span><span class=\"o\">,<\/span>\r\n                            <span class=\"no\">K8S_DEPLOYMENT_NAMESPACE<\/span><span class=\"o\">,<\/span>\r\n                            <span class=\"k\">new<\/span> <span class=\"nf\">V1Patch<\/span><span class=\"o\">(<\/span><span class=\"n\">patchString<\/span><span class=\"o\">),<\/span>\r\n                            <span class=\"kc\">null<\/span><span class=\"o\">,<\/span>\r\n                            <span class=\"kc\">null<\/span><span class=\"o\">,<\/span>\r\n                            <span class=\"kc\">null<\/span><span class=\"o\">,<\/span>\r\n                            <span class=\"kc\">null<\/span><span class=\"o\">,<\/span> <span class=\"c1\">\/\/ field-manager is optional<\/span>\r\n                            <span class=\"kc\">null<\/span><span class=\"o\">,<\/span>\r\n                            <span class=\"kc\">null<\/span><span class=\"o\">),<\/span>\r\n                    <span class=\"nc\">V1Patch<\/span><span class=\"o\">.<\/span><span class=\"na\">PATCH_FORMAT_JSON_PATCH<\/span><span class=\"o\">,<\/span>\r\n                    <span class=\"n\">api<\/span><span class=\"o\">.<\/span><span class=\"na\">getApiClient<\/span><span class=\"o\">());<\/span>\r\n  \t\t\t\t\t<span class=\"no\">LOGGER<\/span><span class=\"o\">.<\/span><span class=\"na\">log<\/span><span class=\"o\">(<\/span><span class=\"nc\">Level<\/span><span class=\"o\">.<\/span><span class=\"na\">INFO<\/span><span class=\"o\">,<\/span><span class=\"s\">\"Scale out done. Number of Replicas : \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">deploy<\/span><span class=\"o\">.<\/span><span class=\"na\">getSpec<\/span><span class=\"o\">().<\/span><span class=\"na\">getReplicas<\/span><span class=\"o\">());<\/span>\r\n            <span class=\"o\">}<\/span> <span class=\"k\">catch<\/span> <span class=\"o\">(<\/span><span class=\"nc\">ApiException<\/span> <span class=\"o\">|<\/span> <span class=\"nc\">IOException<\/span>  <span class=\"n\">e<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n                <span class=\"n\">e<\/span><span class=\"o\">.<\/span><span class=\"na\">printStackTrace<\/span><span class=\"o\">();<\/span>\r\n            <span class=\"o\">}<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u4f7f\u7528\u4e0a\u8ff0\u5185\u5bb9\uff0c\u6211\u4eec\u5728pom.xml\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8d56\u5173\u7cfb\u3002<\/p>\n<pre class=\"post-pre\"><code>\t\t<span class=\"nt\">&lt;dependency&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;groupId&gt;<\/span>io.kubernetes<span class=\"nt\">&lt;\/groupId&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;artifactId&gt;<\/span>client-java-api<span class=\"nt\">&lt;\/artifactId&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;version&gt;<\/span>16.0.0<span class=\"nt\">&lt;\/version&gt;<\/span>\r\n\t\t<span class=\"nt\">&lt;\/dependency&gt;<\/span>\r\n\t\t<span class=\"nt\">&lt;dependency&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;groupId&gt;<\/span>io.kubernetes<span class=\"nt\">&lt;\/groupId&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;artifactId&gt;<\/span>client-java<span class=\"nt\">&lt;\/artifactId&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;version&gt;<\/span>16.0.0<span class=\"nt\">&lt;\/version&gt;<\/span>\r\n\t\t<span class=\"nt\">&lt;\/dependency&gt;<\/span>\r\n\t\t<span class=\"nt\">&lt;dependency&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;groupId&gt;<\/span>io.kubernetes<span class=\"nt\">&lt;\/groupId&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;artifactId&gt;<\/span>client-java-extended<span class=\"nt\">&lt;\/artifactId&gt;<\/span>\r\n\t\t\t<span class=\"nt\">&lt;version&gt;<\/span>16.0.0<span class=\"nt\">&lt;\/version&gt;<\/span>\r\n\t\t<span class=\"nt\">&lt;\/dependency&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u4f7f\u7528jlink\u521b\u5efa\u5b9a\u5236\u7684JRE\uff0c\u8bf7\u5305\u542bjdk.crypto.ec\u3002\u5982\u679c\u4e0d\u5305\u542b\uff0c\u5219\u5728\u4e0eAPI\u670d\u52a1\u5668\u8fdb\u884cSSL\u901a\u4fe1\u65f6\u4f1a\u5931\u8d25\uff0c\u8bf7\u6307\u5b9a\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code> jlink <span class=\"nt\">--no-header-files<\/span> <span class=\"nt\">--no-man-pages<\/span> <span class=\"nt\">--compress<\/span><span class=\"o\">=<\/span>2 <span class=\"nt\">--strip-debug<\/span> <span class=\"nt\">--add-modules<\/span> java.base,java.logging,java.naming,java.desktop,java.management,java.security.jgss,jdk.crypto.ec,java.instrument,java.sql <span class=\"nt\">--output<\/span> custom-jre\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Kubernetes \u306eJava Client \u3068\u3044\u3046\u306e\u304c\u3042\u3063\u305f\u306e\u3067\u3001\u8a66\u3057\u306b pods \u306e\u30b9\u30b1\u30fc\u30eb\u30fb\u30a2\u30a6\u30c8\u3092\u5b9f [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-35672","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) - 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