{"id":43841,"date":"2024-01-04T10:21:44","date_gmt":"2022-12-27T18:04:36","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes%e7%9a%84%e6%b0%b4%e5%b9%b3%e8%87%aa%e5%8a%a8%e6%89%a9%e5%b1%95%ef%bc%88hpa-v2%ef%bc%89%e3%80%82\/"},"modified":"2024-05-04T16:49:09","modified_gmt":"2024-05-04T08:49:09","slug":"kubernetes%e7%9a%84%e6%b0%b4%e5%b9%b3%e8%87%aa%e5%8a%a8%e6%89%a9%e5%b1%95%ef%bc%88hpa-v2%ef%bc%89%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes%e7%9a%84%e6%b0%b4%e5%b9%b3%e8%87%aa%e5%8a%a8%e6%89%a9%e5%b1%95%ef%bc%88hpa-v2%ef%bc%89%e3%80%82\/","title":{"rendered":"Kubernetes\u7684\u6c34\u5e73\u81ea\u52a8\u6269\u5c55\uff08HPA v2\uff09"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u5728Kubernetes 1.23\u4e2d\uff0c\u7ec8\u4e8e\u5c06\u6b63\u5f0f\u53d1\u5e03Horizontail Pod Autoscaler(HPA) v2\u7248\u3002\u4e3a\u4e86\u5e86\u795d\u8fd9\u4e00\u4e8b\u4ef6\uff1f\u6211\u6253\u7b97\u4ee5\u4ee5\u524d\u5199\u7684\u4e3b\u8981\u5173\u4e8eHPA v1\u7684\u6587\u7ae0\u4e3a\u57fa\u7840\uff0c\u4e0ev1(v2beta1)\u7248\u672c\u7684\u533a\u522b\u4e00\u8d77\u4ecb\u7ecdHPA v2\u7248\u7684\u6982\u8ff0\u3002<br \/>\n(\u4ecd\u7136\u5076\u5c14\u4f1a\u770b\u5230\u4e00\u4e9b\u8fc7\u65f6\u7684\u4fe1\u606f\u611f\u5230\u6709\u4e9b\u5c34\u5c2c?)<\/p>\n<h1>\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e\u5668\u662f\u4ec0\u4e48\u3002<\/h1>\n<p>\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e\u5668\u6839\u636e\u8bbe\u7f6e\u7684\u5185\u5bb9\u548c\u57fa\u4e8e\u5ea6\u91cf\u6807\u51c6\u8ba1\u7b97\u7684\u503c\uff0c\u5c06Pod\u7684\u6570\u91cf\u8c03\u6574\u4e3a\u7ef4\u62a4\u6709Deployment\u3001ReplicaSet\u3001StatefulSet\u7b49Scale\u5b50\u8d44\u6e90\u7684\u8d44\u6e901\u3002\u53ef\u4f7f\u7528\u5404\u79cd\u5ea6\u91cf\u6807\u51c6\uff0c\u5982CPU\u3001\u5185\u5b58\u3001\u81ea\u5b9a\u4e49\u5ea6\u91cf\u6807\u51c6\u7b49\u6765\u8fdb\u884c\u8be5\u7f29\u653e\u7684\u5224\u5b9a\u3002\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e\u5668\u4f5c\u4e3aKubernetes API\u5bf9\u8c61\u548c\u63a7\u5236\u5668\u5b9e\u73b0\u3002\u8be5\u63a7\u5236\u5668\u4f1a\u5b9a\u671f\u6bd4\u8f83\u7528\u6237\u8bbe\u7f6e\u7684\u9608\u503c\u548c\u5ea6\u91cf\u6807\u51c6\u7684\u503c\uff0c\u5e76\u8c03\u6574Pod\u7684\u6570\u91cf\u3002<\/p>\n<p>\u53ea\u8981\u901a\u8fc7HPA\u8c03\u6574\uff0c\u8fd9\u610f\u5473\u7740\u53ea\u80fd\u8c03\u6574Pod\u7684\u6570\u91cf\u3002\u8bf7\u6ce8\u610f\uff0c\u8282\u70b9\u672c\u8eab\u7684\u6269\u5c55\u4ee5\u53caPod\u7684\u8d44\u6e90\u5927\u5c0f\u7684\u589e\u51cf\u9700\u8981\u4f7f\u7528\u5176\u4ed6\u673a\u5236\uff08\u5982cluster-autoscaler\u3001VerticalPodAutoscaler\u7b49\uff09\u3002<\/p>\n<h2>\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e\u5668\u7684\u64cd\u4f5c\u65b9\u5f0f<\/h2>\n<p>\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e\u5668\u7684\u63a7\u5236\u5668\uff08HorizontalPodAutoscalerController\uff09\u4f5c\u4e3aControllerManager\u4e2d\u7684\u4e00\u4e2a\u63a7\u5236\u5668\u5b9e\u73b0\uff0c\u5e76\u4e14\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u63a7\u5236\u5faa\u73af\uff08\u6536\u96c6\u6307\u6807\u503c\u5e76\u8c03\u6574\u526f\u672c\u6570\u7684\u5904\u7406\u5faa\u73af\uff09\u4ee515\u79d2\u95f4\u96942\u8fdb\u884c\u5468\u671f\u6027\u5904\u7406\u3002\u53ef\u4ee5\u901a\u8fc7ControllerManager\u7684&#8211;horizontal-pod-autoscaler-sync-period\u6807\u5fd7\u6765\u66f4\u6539\u6b64\u95f4\u9694\u3002<\/p>\n<p>\u5728\u8fd9\u4e2a\u5faa\u73af\u4e2d\uff0c\u6839\u636e\u6307\u5b9a\u7ed9HPA\u5bf9\u8c61\u7684\u914d\u7f6e\uff0c\u6c47\u603b\u6307\u6807\u6570\u636e\uff0c\u5e76\u57fa\u4e8e\u8fd9\u4e9b\u503c\u8ba1\u7b97\u526f\u672c\u6570\u3002<br \/>\n\u66f4\u8be6\u7ec6\u7684\u7b97\u6cd5\u63cf\u8ff0\u8bf7\u53c2\u8003https:\/\/kubernetes.io\/docs\/tasks\/run-application\/horizontal-pod-autoscale\/#algorithm-details\u3002<\/p>\n<p>\u5728\u4e00\u4e9b\u5ea6\u91cf\u7c7b\u578b\u4e2d\uff0c\u4f7f\u7528Pod\u7684\u5e73\u5747\u503c\u8fdb\u884c\u8ba1\u7b97\uff0c\u5177\u4f53\u7684\u8ba1\u7b97\u516c\u5f0f\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code>desiredReplicas = ceil[currentReplicas * ( currentMetricValue \/ desiredMetricValue )]\r\n<\/code><\/pre>\n<h2>API\u7248\u672c<\/h2>\n<p>\u8bf7\u6ce8\u610f\uff0cHorizontalPodAutoscaler\u76ee\u524d\u5df2\u7ecf\u53d1\u5e03\u4e86\u4ee5\u4e0b\u7248\u672c\uff0c\u5e76\u4e14\u6bcf\u4e2a\u7248\u672c\u7684spec\u548c\u884c\u4e3a\u90fd\u6709\u6240\u4e0d\u540c\u3002<br \/>\nHPA\u662fautoscaling API\u7ec4\u7684\u5bf9\u8c61\uff0c\u5e76\u4e14\u4ee5\u4e0bAPI\u7248\u672c\u5df2\u7ecf\u53d1\u5e03\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">v1<\/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\">v2beta1<\/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\">v2beta2<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">v2 (v1.23.0\u304b\u3089\u8ffd\u52a0\u4e88\u5b9a)<\/ul>\n<p>\u5982\u679c\u6ca1\u6709\u7279\u6b8a\u60c5\u51b5\uff0c\u5efa\u8bae\u60a8\u4f7f\u7528\u6700\u65b0\u7248\u672c\u7684v2\u6216v2beta2\u3002<\/p>\n<h2>\u6c34\u5e73Pod\u81ea\u52a8\u4f38\u7f29\u529f\u80fd\u6240\u652f\u6301\u7684\u6307\u6807\u7c7b\u578b<\/h2>\n<p>\u76ee\u524d\u53ef\u7528\u7684\u7c7b\u578b\u5982\u4e0b\u6240\u793a\u30023<\/p>\n<p>PodResource: \u5404 Pod \u306e\u30ea\u30bd\u30fc\u30b9\u306e\u30e1\u30c8\u30ea\u30af\u30b9(v2beta2\u3067\u306fResource)<\/p>\n<p>\u4f8b: Pod\u306eCPU\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u7387\u306a\u3069<br \/>\n\u3053\u306e\u30b1\u30fc\u30b9\u306e\u5834\u5408pod.spec.containers.resource.request\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u6a5f\u80fd\u3057\u306a\u3044\u305f\u3081\u8a2d\u5b9a\u304c\u5fc5\u9808<br \/>\n\u5024\u306f\u76ee\u6a19\u5024\u3068\u6bd4\u8f03\u3059\u308b\u524d\u306b\u5e73\u5747\u5316\u3055\u308c\u307e\u3059<\/p>\n<p>Object: Kubernetes Object\u306b\u95a2\u9023\u3057\u305f\u30e1\u30c8\u30ea\u30af\u30b9<\/p>\n<p>\u4f8b: Ingress\u306e\u79d2\u9593\u30ea\u30af\u30a8\u30b9\u30c8\u6570\u306a\u3069<\/p>\n<p>Pods: \u73fe\u5728\u306e\u30b9\u30b1\u30fc\u30eb\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u5404Pod\u5358\u4f4d\u3067\u751f\u6210\u3055\u308c\u308b\u30e1\u30c8\u30ea\u30af\u30b9<\/p>\n<p>\u4f8b: \u79d2\u9593\u51e6\u7406\u6570\u306a\u3069<br \/>\n\u5024\u306f\u76ee\u6a19\u5024\u3068\u6bd4\u8f03\u3059\u308b\u524d\u306b\u5e73\u5747\u5316\u3055\u308c\u307e\u3059<\/p>\n<p>\u30ea\u30bd\u30fc\u30b9\u4f7f\u7528\u91cf\u4ee5\u5916\u306ePod\u5358\u4f4d\u3067\u51fa\u529b\u3055\u308c\u308b\u30e1\u30c8\u30ea\u30af\u30b9\u306a\u3069\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306b\u5229\u7528\u3059\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>External: \u3069\u306eKubernetes\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u3082\u95a2\u9023\u4ed8\u3051\u3089\u308c\u3066\u3044\u306a\u3044\u30b0\u30ed\u30fc\u30d0\u30eb\u30e1\u30c8\u30ea\u30af\u30b9<\/p>\n<p>\u4f8b: \u30e1\u30c3\u30bb\u30fc\u30b8\u30f3\u30b0\u30b5\u30fc\u30d3\u30b9\u306e\u30ad\u30e5\u30fc\u306e\u9577\u3055\u3084\u3001\u30af\u30e9\u30b9\u30bf\u5916\u306e\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b5\u30fc\u304b\u3089\u306eQPS\u306a\u3069<br \/>\n\u30af\u30e9\u30b9\u30bf\u5916\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u306e\u60c5\u5831\u306b\u57fa\u3065\u3044\u3066\u30aa\u30fc\u30c8\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/p>\n<p>ContainerResource: \u5404\u30b3\u30f3\u30c6\u30ca\u306e\u30ea\u30bd\u30fc\u30b9\u306e\u30e1\u30c8\u30ea\u30af\u30b94<\/p>\n<p>\u4f8b: \u30b3\u30f3\u30c6\u30ca\u306eCPU\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u7387\u306a\u3069<br \/>\n\u3053\u306e\u30b1\u30fc\u30b9\u306e\u5834\u5408pod.spec.containers.resource.request\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u6a5f\u80fd\u3057\u306a\u3044\u305f\u3081\u8a2d\u5b9a\u304c\u5fc5\u9808<br \/>\n\u5024\u306f\u76ee\u6a19\u5024\u3068\u6bd4\u8f03\u3059\u308b\u524d\u306b\u5e73\u5747\u5316\u3055\u308c\u307e\u3059<\/p>\n<p>Pod\u5358\u4f4d\u3060\u3068\u30b5\u30a4\u30c9\u30ab\u30fc\u306a\u3069\u306e\u30b3\u30f3\u30c6\u30ca\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u30ce\u30a4\u30ba\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308b\u305f\u3081\u3001\u30b3\u30f3\u30c6\u30ca\u5358\u4f53\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u5bfe\u8c61\u306b\u3067\u304d\u308b\u3088\u3046\u306b\u6700\u8fd1\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f<\/p>\n<p>\u5728\u6307\u5b9a\u8fd9\u4e9b\u6307\u6807\u65f6\uff0c\u81f3\u5c11\u9700\u8981\u6307\u5b9a\u4e00\u4e2a\u3002\u5982\u679c\u6307\u5b9a\u4e86\u591a\u4e2a\uff0c\u5c06\u5728\u6240\u6709\u6307\u6807\u7c7b\u578b\u4e0a\u8fdb\u884c\u8ba1\u7b97\uff0c\u5e76\u9009\u62e9\u6700\u5927\u503c\u4f5c\u4e3a\u91c7\u7528\u7684\u503c\u3002<br \/>\n\u5373\u4f7f\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u65e0\u6cd5\u83b7\u53d6\u5230\u67d0\u4e9b\u6307\u6807\uff0c\u4e5f\u4f1a\u57fa\u4e8e\u6700\u5927\u5927\u5c0f\u8fdb\u884c\u6269\u5bb9\u64cd\u4f5c\uff0c\u4f46\u4e0d\u4f1a\u8fdb\u884c\u7f29\u5c0f\u64cd\u4f5c\u3002<\/p>\n<h2>\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e\u63a7\u5236\u5668\u6536\u96c6\u6307\u6807\u7684\u65b9\u6cd5\u3002<\/h2>\n<p>\u6709\u4ee5\u4e0b\u4e09\u79cd\u9009\u62e9\u53ef\u4f9b\u60a8\u9009\u62e9\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">metrics-server5 \u304b\u3089\u53ce\u96c6\u3059\u308b\u65b9\u6cd5<\/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\">Custom Metrics API: https:\/\/github.com\/kubernetes\/design-proposals-archive\/blob\/main\/instrumentation\/custom-metrics-api.md<\/ul>\n<\/li>\n<\/ul>\n<p>External Metrics API: https:\/\/github.com\/kubernetes\/design-proposals-archive\/blob\/main\/instrumentation\/external-metrics-api.md<\/p>\n<p>\u8fd9\u4e9bAPI\u9700\u8981\u4f7f\u7528Kubernetes\u7684apiserver\u4e2d\u7684\u805a\u5408\u5c42\u6765\u5c06\u4e0d\u5728apiserver\u4e2d\u63d0\u4f9b\u7684API\u5d4c\u5165\u5230apiserver\u4e2d\uff0c\u4ee5\u4fbf\u80fd\u591f\u4eceapiserver\u4e2d\u6536\u96c6\u6307\u6807\u3002<\/p>\n<p>\u5177\u4f53\u800c\u8a00\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6eapiserver\u7684\u4e00\u4e9b\u6807\u5fd7\u6765\u6dfb\u52a0\u540d\u4e3aAPIService\u7684\u8d44\u6e90\uff0c\u5e76\u5c06\u8bf7\u6c42\u6d41\u8f6c\u81f3\u63d0\u4f9bAPI\u7684Service\u3002<br \/>\n\u4f8b\u5982\uff0c\u5bf9\u4e8emetrics-server\uff0c\u60a8\u53ef\u4ee5\u6dfb\u52a0\u7c7b\u4f3c\u4e8ehttps:\/\/github.com\/kubernetes-sigs\/metrics-server\/blob\/master\/manifests\/base\/apiservice.yaml\u7684\u8d44\u6e90\u3002<\/p>\n<p>\u5982\u679c\u4f7f\u7528\u81ea\u5b9a\u4e49\u5ea6\u91cf\u6807\u51c6\uff0c\u53ef\u4ee5\u4f7f\u7528Prometheus\u9002\u914d\u5668(Prometheus Adapter)\u5c06Prometheus\u7684\u5ea6\u91cf\u6807\u51c6\u7528\u4f5c\u81ea\u5b9a\u4e49\u5ea6\u91cf\u6807\u51c6\u3002\u8be5\u9002\u914d\u5668\u4f1a\u6dfb\u52a0\u4e00\u4e9b\u8d44\u6e90\uff0c\u4f8b\u5982https:\/\/github.com\/kubernetes-sigs\/prometheus-adapter\/blob\/v0.9.1\/deploy\/manifests\/custom-metrics-apiservice.yaml\u3002\u6709\u5173Prometheus\u9002\u914d\u5668\u7684\u8be6\u7ec6\u4f7f\u7528\u65b9\u6cd5\uff0c\u8bf7\u53c2\u8003@Ladicle\u7684\u6587\u6863\uff0c\u94fe\u63a5\u5982\u4e0b\uff1ahttps:\/\/qiita.com\/Ladicle\/items\/5ff251b89df2f1ebb821<\/p>\n<h2>\u4f7f\u7528\u65b9\u5f0f<\/h2>\n<p>\u4e0d\u540c\u7684\u6307\u6807\u7c7b\u578b\u6709\u4e0d\u540c\u7684\u4f7f\u7528\u65b9\u6cd5\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u5c06\u4ecb\u7ecd\u6700\u5e38\u89c1\u7684PodResource\u6307\u6807\u7684\u4f7f\u7528\u65b9\u6cd5\u3002<br \/>\n\u4e0d\u8fc7\uff0c\u5b98\u65b9\u6587\u6863\u4e2d\u6709\u66f4\u8be6\u7ec6\u7684\u8bf4\u660e\uff0c\u6211\u5efa\u8bae\u60a8\u67e5\u770b\u90a3\u91cc\u7684\u8be6\u7ec6\u8bf4\u660e\u3002<br \/>\nhttps:\/\/kubernetes.io\/docs\/tasks\/run-application\/horizontal-pod-autoscale-walkthrough\/<\/p>\n<p>\u4ece\u4e2d\u6458\u5f55\u5e76\u4ecb\u7ecd\u7b80\u5355\u7684\u4f7f\u7528\u65b9\u6cd5\u3002<br \/>\n\u5b98\u65b9\u6587\u4ef6\u7684\u793a\u4f8b\u4e2d\uff0c\u4f7f\u7528\u7b80\u5355\u7684PHP\u521b\u5efa\u4e86\u4e00\u4e2aWeb\u670d\u52a1\uff0c\u8be5\u670d\u52a1\u901a\u8fc7\u4e00\u4e2a\u90e8\u7f72\uff08Deployment\uff09\u548c\u4e00\u4e2a\u670d\u52a1\uff08Service\uff09\u8fdb\u884c\u521b\u5efa\u3002\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2aHPA\uff0c\u4ee5\u4f7f\u6240\u6709Pod\u7684CPU\u5229\u7528\u7387\u4fdd\u6301\u5728\u5927\u7ea650%\u5de6\u53f3\u3002\u53e6\u5916\uff0c\u4e3a\u4e86\u9632\u6b62\u8fc7\u5ea6\u6269\u5c55\uff0c\u6211\u4eec\u5e0c\u671b\u7ed9Pod\u8bbe\u7f6e\u4e00\u4e2a\u6700\u5927\u503c\u4e3a10\u7684\u9650\u5236\u3002<\/p>\n<p>\u5982\u679c\u53ea\u9700\u5bf9HPA\u8fdb\u884c\u8bbe\u7f6e\uff0c\u4e14\u5df2\u5728\u73af\u5883\u4e2d\u90e8\u7f72\u4e86metrics-server\uff0c\u5219\u53ea\u9700\u521b\u5efa\u4ee5\u4e0b\u547d\u4ee4\u6216HorizontalPodAutoscaler\u5bf9\u8c61\u5373\u53ef\u4f7f\u7528\uff08\u5047\u8bbe\u5df2\u90e8\u7f72\u4e86\u8981\u8fdb\u884c\u6269\u5c55\u7684\u670d\u52a1\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code>$ kubectl autoscale deployment php-apache --cpu-percent=50 --min=1 --max=10\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">autoscaling\/v2<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">HorizontalPodAutoscaler<\/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\">php-apache<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">scaleTargetRef<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">apps\/v1<\/span>\r\n    <span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Deployment<\/span>\r\n    <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">php-apache<\/span>\r\n  <span class=\"na\">minReplicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">1<\/span>\r\n  <span class=\"na\">maxReplicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">10<\/span>\r\n  <span class=\"na\">metrics<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"pi\">-<\/span> <span class=\"na\">type<\/span><span class=\"pi\">:<\/span> <span class=\"s\">PodResource<\/span>\r\n    <span class=\"na\">resource<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">cpu<\/span>\r\n      <span class=\"na\">target<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"na\">type<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Utilization<\/span>\r\n        <span class=\"na\">averageUtilization<\/span><span class=\"pi\">:<\/span> <span class=\"m\">50<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u662f\u7ed3\u675f\u4e86\u3002\u5982\u679c\u60f3\u8981\u4f53\u9a8c\u4e00\u4e0b\u7b80\u5355\u8d1f\u8f7d\u65f6Pod\u6570\u91cf\u7684\u4e0a\u4e0b\u53d8\u5316\uff0c\u8bf7\u53c2\u8003\u5b98\u65b9\u6587\u6863\uff0c\u5c1d\u8bd5\u65bd\u52a0\u8d1f\u8f7d\u662f\u4e2a\u4e0d\u9519\u7684\u60f3\u6cd5\u3002<\/p>\n<p>\u8bbe\u5b9a\u8fd9\u79cd\u914d\u7f6e\u672c\u8eab\u975e\u5e38\u7b80\u5355\uff0c\u4f46\u662f\u627e\u5230\u6700\u4f73\u914d\u7f6e\u503c\u5e76\u4e0d\u5bb9\u6613\u3002\u5bf9\u4e8e\u8fd9\u4e00\u70b9\uff0c\u7b46\u8005\u4e5f\u4e0d\u77e5\u9053\u6709\u4ec0\u4e48\u6700\u4f73\u5b9e\u8df5\uff0c\u53ea\u80fd\u901a\u8fc7\u6301\u7eed\u8fdb\u884c\u8d1f\u8f7d\u6d4b\u8bd5\u548c\u5b9e\u9645\u5ea6\u91cf\u7b49\u6765\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n<h2>\u8c03\u6574\u89c4\u6a21\u884c\u4e3a<\/h2>\n<p>Kubernetes 1.18\u7248\u672c\u65b0\u589e\u4e86HPA\u7684behavior\u5b57\u6bb5\u3002\u4ee5\u524d\uff0c\u53ea\u80fd\u5728\u6574\u4e2aKubernetes\u4e2d\u8bbe\u7f6e\u8c03\u6574\u89c4\u6a21\u5347\u7ea7\u548c\u964d\u7ea7\u7684\u9891\u7387\u548c\u95f4\u9694\u7b49\uff0c\u73b0\u5728\u53ef\u4ee5\u5728HPA\u7684spec\u4e2d\u8fdb\u884c\u63cf\u8ff0\uff0c\u5e76\u4e14\u53ef\u4ee5\u5728HPA\u5355\u4f4d\u8fdb\u884c\u8c03\u6574\u3002<br \/>\n\u8fd9\u4f7f\u5f97\u53ef\u4ee5\u5bf9\u5e94\u7528\u7a0b\u5e8f\u5355\u4f4d\u8fdb\u884c\u8c03\u6574\u6269\u5c55\u901f\u5ea6\u3002\u5982\u679c\u4e0d\u8fdb\u884c\u6b64\u8bbe\u7f6e\uff0c\u5219\u4f1a\u4f7f\u7528ControllerManager\u4e2d\u8bbe\u7f6e\u7684\u7fa4\u96c6\u9ed8\u8ba4\u503c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u60f3\u4e86\u89e3\u8bbe\u5b9a\u65b9\u6cd5\u6216\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u8003\u5b98\u65b9\u6587\u4ef6\u6216KEP\u3002<\/p>\n<p>\u516c\u5f0f\u6587\u6863\uff1ahttps:\/\/kubernetes.io\/docs\/tasks\/run-application\/horizontal-pod-autoscale\/#\u652f\u6301\u53ef\u914d\u7f6e\u7684\u7f29\u653e\u884c\u4e3a<br \/>\nKEP\uff1ahttps:\/\/github.com\/kubernetes\/enhancements\/tree\/master\/keps\/sig-autoscaling\/853-configurable-hpa-scale-velocity<\/p>\n<h2>v2\u7684\u6539\u52a8\u4ecev2beta2\u7248\u672c\u5f00\u59cb\u3002<\/h2>\n<p>\u7531\u65bc\u7b46\u8005\u5c1a\u672a\u5be6\u969b\u6e2c\u8a66\uff0c\u56e0\u6b64\u4ee5\u4e0b\u5167\u5bb9\u50c5\u57fa\u65bc\u6587\u4ef6\u548c\u554f\u984c\u8aaa\u660e\u9032\u884c\u63a8\u6e2c\u7e3d\u7d50\u3002\u8acb\u6ce8\u610f\u53ef\u80fd\u5b58\u5728\u932f\u8aa4\u90e8\u5206\u3002<\/p>\n<p>HPA v2beta2 \u5230 v2 \u7684\u53d8\u66f4\u4e0d\u662f\u5f88\u591a\uff0c\u53ea\u6709\u4ee5\u4e0b\u8fd9\u4e9b\u89c4\u8303\u7684\u53d8\u66f4\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30e1\u30c8\u30ea\u30af\u30b9\u30bf\u30a4\u30d7(spec.metrics.type)\u306eResource\u304cPodResource\u306b\u5909\u66f4\u3055\u308c\u307e\u3057\u305f<\/ul>\n<\/li>\n<\/ul>\n<p>Disabled\u304b\u3089ScalingDisabled\u306b\u5909\u66f4\u3055\u308c\u307e\u3057\u305f<br \/>\nbehavior\u306eselectPolicy(spec.behavior.scaleUp\/Down.selectPolicy)\u306e\u5024\u304c\u6b21\u306e\u3088\u3046\u306b\u5909\u66f4\u3055\u308c\u307e\u3057\u305f<\/p>\n<p>Max -&gt; MaxChange<\/p>\n<p>Min -&gt; MinChange<\/p>\n<p>\u5982\u679c\u4f7f\u7528\u4e86\u76f8\u5173\u7684\u89c4\u8303(spec)\uff0c\u5219\u6309\u7167\u4e0a\u8ff0\u65b9\u5f0f\u8fdb\u884c\u66f4\u6539\uff0c\u5e76\u5c06\u7248\u672c\u66f4\u6539\u4e3av2\uff0c\u8fc1\u79fb\u5c06\u5b8c\u6210\u3002<br \/>\n\u53ea\u6709\u89c4\u8303\u7684\u8bbe\u7f6e\u503c\u53d1\u751f\u4e86\u66f4\u6539\uff0c\u4f3c\u4e4e\u6ca1\u6709\u66f4\u6539HPA\u672c\u8eab\u7684\u884c\u4e3a\u3002<\/p>\n<p>\u8bf7\u53c2\u9605 KEP \u83b7\u53d6\u66f4\u8be6\u7ec6\u7684\u4fe1\u606f\uff1ahttps:\/\/github.com\/kubernetes\/enhancements\/issues\/2702\u3002<\/p>\n<div>v1\u7684\u65f6\u5019\uff0c\u53ea\u80fd\u9488\u5bf9\u7279\u5b9a\u7684\u8d44\u6e90\uff0c\u4f46\u662f\u6211\u5fd8\u8bb0\u4e86\u4ece\u4ec0\u4e48\u65f6\u5019\u8d77\uff0c\u53ea\u8981\u6709Scale\u5b50\u8d44\u6e90\uff0c\u5c31\u53ef\u4ee5\u9488\u5bf9\u4efb\u4f55\u8d44\u6e90\uff0c\u5e76\u4e14\u8fd8\u53ef\u4ee5\u9488\u5bf9\u901a\u8fc7CRD\u521b\u5efa\u7684\u81ea\u5b9a\u4e49\u8d44\u6e90\u3002<br \/>\n\u4ee5\u524d\u662f30\u79d2\uff0c\u4f46\u6211\u8bb0\u5f97\u6269\u5bb9\u901f\u5ea6\u6210\u4e3a\u4e00\u4e2a\u95ee\u9898\uff0c\u53d8\u5f97\u66f4\u77ed\u4e86\u3002<br \/>\n\u8fd9\u4e2a\u5b9a\u4e49\u5728\u8fd9\u4e2a\u6587\u4ef6\u4e2d\uff1ahttps:\/\/github.com\/kubernetes\/kubernetes\/blob\/bd8e8507093095bbe411fd501ea5971f5b077b3b\/staging\/src\/k8s.io\/api\/autoscaling\/v2\/types.go#L97<br \/>\n\u770b\u8d77\u6765\u8fd8\u5728alpha\u7248\u672c\u4e0a\u3002KEP: https:\/\/github.com\/kubernetes\/enhancements\/tree\/master\/keps\/sig-autoscaling\/1610-container-resource-autoscaling<br \/>\n\u4ee5\u524d\u6211\u4eec\u4f7f\u7528heapster\uff0c\u4f46\u73b0\u5728\u63a8\u8350\u4f7f\u7528metrics-server\u3002<br \/>\nhttps:\/\/kubernetes.io\/docs\/tasks\/extend-kubernetes\/configure-aggregation-layer\/<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u5728Kubernetes 1.23\u4e2d\uff0c\u7ec8\u4e8e\u5c06\u6b63\u5f0f\u53d1\u5e03Horizontail Pod Autoscaler( [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43841","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\/ 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