{"id":43850,"date":"2022-12-18T23:02:49","date_gmt":"2023-03-10T22:52:25","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-%e7%9a%84%e6%b0%b4%e5%b9%b3%e8%87%aa%e5%8a%a8%e7%bc%a9%e6%94%be\/"},"modified":"2024-04-29T05:55:03","modified_gmt":"2024-04-28T21:55:03","slug":"kubernetes-%e7%9a%84%e6%b0%b4%e5%b9%b3%e8%87%aa%e5%8a%a8%e7%bc%a9%e6%94%be","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%e7%bc%a9%e6%94%be\/","title":{"rendered":"Kubernetes \u7684\u6c34\u5e73\u81ea\u52a8\u7f29\u653e"},"content":{"rendered":"

\u6b64\u6587\u6863\u57fa\u4e8e HPA v1(v2beta1) \uff0c\u76ee\u524d\uff082021\/12\uff09\u5df2\u7ecf\u6210\u4e3a\u4e0d\u63a8\u8350\u4f7f\u7528\u7684\u65b9\u6cd5\u3002\u6700\u65b0\u5185\u5bb9\u5df2\u6574\u7406\u5728 https:\/\/qiita.com\/shmurata\/items\/e6bd8c56f3e4f9a8e384 \uff0c\u8bf7\u53c2\u8003\u8be5\u6587\u6863\u3002<\/p>\n

\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5c06\u603b\u7ed3Kubernetes\u7684\u4e00\u4e2a\u81ea\u52a8\u6269\u5c55\u529f\u80fd\uff0c\u5373\u6c34\u5e73Pod\u81ea\u52a8\u6269\u5c55\u5668\u3002<\/p>\n

\u6c34\u5e73 Pod \u81ea\u52a8\u7f29\u653e<\/h1>\n

\u6c34\u5e73Pod\u81ea\u52a8\u6269\u5c55\u5668\u80fd\u591f\u81ea\u52a8\u8c03\u6574ReplicationController\u3001Deployment\u6216\u8005ReplicaSet\u4e2d\u7684Pod\u6570\u91cf\u3002\u53ef\u901a\u8fc7\u4f7f\u7528CPU\u6216\u81ea\u5b9a\u4e49\u6307\u6807\u6765\u8fdb\u884c\u6269\u5c55\u5224\u5b9a\u3002
\n\u6c34\u5e73Pod\u81ea\u52a8\u6269\u5c55\u5668\u662f\u4f5c\u4e3aKubernetes API\u5bf9\u8c61\u548c\u63a7\u5236\u5668\u5b9e\u73b0\u7684\u3002\u8be5\u63a7\u5236\u5668\u5b9a\u671f\u6bd4\u8f83\u7528\u6237\u8bbe\u7f6e\u7684\u9608\u503c\u548c\u6307\u6807\u503c\uff0c\u4ee5\u8c03\u6574\u526f\u672c\u6570\u91cf\u3002<\/p>\n

\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e\u5668\u7684\u529f\u80fd<\/h2>\n

Horizontal Pod Autoscaler\u7684\u63a7\u5236\u5668\uff08HorizontalPodAutoscalerController\uff09\u662fControllerManager\u4e2d\u7684\u4e00\u4e2a\u63a7\u5236\u5668\uff0c\u5b83\u9ed8\u8ba4\u4ee530\u79d2\u7684\u95f4\u9694\u5468\u671f\u6267\u884c\u63a7\u5236\u5faa\u73af\uff08\u6536\u96c6\u6307\u6807\u503c\u5e76\u8c03\u6574\u526f\u672c\u6570\u91cf\u7684\u5904\u7406\u5faa\u73af\uff09\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528ControllerManager\u7684–horizontal-pod-autoscaler-sync-period\u6807\u5fd7\u66f4\u6539\u6b64\u95f4\u9694\u3002<\/p>\n

\u8be5\u63a7\u5236\u5668\u5904\u7406\u7684\u6307\u6807\u6709\u4ee5\u4e00\u4e2aPod\u4e3a\u5355\u4f4d\u751f\u6210\u7684\u6307\u6807\uff08\u4f8b\u5982\uff1aPod\u7684CPU\u4f7f\u7528\u7387\uff09\u548c\u4e00\u4e2a\u6574\u4f53\u7684\u6307\u6807\uff08\u4f8b\u5982\uff1a\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7684\u8bf7\u6c42\u6570\uff09\u3002\u9700\u6ce8\u610f\u5728\u4ee5\u4e00\u4e2aPod\u4e3a\u5355\u4f4d\u751f\u6210\u7684\u6307\u6807\uff08\u5373\u6bcf\u4e2aPod\u7684\u6307\u6807\uff09\u7684\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u65e0\u6cd5\u83b7\u53d6\u67d0\u4e9bPod\u7684\u6307\u6807\uff0c\u5fc5\u987b\u8003\u8651\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n

\u5982\u679c\u6ca1\u6709\u8bbe\u7f6eRequest\uff0cHorizontalPodAutoscalerController\u5c06\u4e0d\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\u3002\u8bf7\u53c2\u8003\u81ea\u52a8\u7f29\u653e\u7b97\u6cd5\u4ee5\u83b7\u53d6\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n

HorizontalPodAutoscalerController\u6709\u4e24\u79cd\u6536\u96c6\u6307\u6807\u7684\u65b9\u6cd5\u3002\u4e00\u79cd\u662f\u76f4\u63a5\u8bbf\u95eeHeapster\u5e76\u83b7\u53d6\u6307\u6807\u7684\u65b9\u6cd5\uff0c\u53e6\u4e00\u79cd\u662f\u901a\u8fc7REST\u5ba2\u6237\u7aef\u8bbf\u95ee\u7684\u65b9\u6cd5\u3002\u5728\u76f4\u63a5\u8bbf\u95eeHeapster\u65f6\uff0c\u9700\u8981\u901a\u8fc7API\u670d\u52a1\u5668\u7684ServiceProxySubResource\u8fdb\u884c\u8bbf\u95ee\u3002\u540c\u65f6\uff0cHeapster\u9700\u8981\u5728kube-system\u547d\u540d\u7a7a\u95f4\u4e2d\u90e8\u7f72\u548c\u8fd0\u884c\u3002\u5173\u4e8e\u901a\u8fc7REST\u5ba2\u6237\u7aef\u8bbf\u95ee\u7684\u65b9\u6cd5\uff0c\u5c06\u5728\u540e\u9762\u4ecb\u7ecd\u5173\u4e8e\u81ea\u5b9a\u4e49\u6307\u6807\u7684\u90e8\u5206\u4e2d\u8fdb\u884c\u8bf4\u660e\u3002<\/p>\n

API \u7248\u672c<\/h2>\n

HorizontalPodAutoscaler\u662fautoscaling API Group\u7684\u5bf9\u8c61\u3002\u622a\u81f32018\u5e745\u67089\u65e5\uff0c\u53ea\u6709\u57fa\u4e8eCPU\u4f7f\u7528\u7387\u7684autoscaling\u662f\u7a33\u5b9a\u7684\uff0c\u5e76\u63d0\u4f9b\u5728autoscaling\/v1\u4e2d\u3002\u57fa\u4e8e\u5185\u5b58\u4f7f\u7528\u7387\u7684\u81ea\u52a8\u4f38\u7f29\u548c\u57fa\u4e8e\u81ea\u5b9a\u4e49\u6307\u6807\u7684\u81ea\u52a8\u4f38\u7f29\u5219\u5728autoscaling\/v2beta1\u4e2d\u63d0\u4f9b\u3002\u76ee\u524d\u5bf9\u4e8eautoscaling\/v2\u7684\u53d1\u5e03\u65f6\u95f4\u5c1a\u672a\u786e\u5b9a\u3002<\/p>\n

\u4f7f\u7528\u65b9\u6cd5<\/h2>\n

\u5982\u679cHeapster\u73af\u5883\u5df2\u7ecf\u90e8\u7f72\u597d\u4e86\uff0c\u4f60\u53ea\u9700\u8981\u521b\u5efa\u4ee5\u4e0b\u7684HorizontalPodAutoscaler\u5bf9\u8c61\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e86\u3002<\/p>\n

apiVersion<\/span>:<\/span> autoscaling\/v1<\/span>\r\nkind<\/span>:<\/span> HorizontalPodAutoscaler<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> WebFrontend<\/span>\r\n  namespace<\/span>:<\/span> default<\/span>\r\nspec<\/span>:<\/span>\r\n  # \u30aa\u30fc\u30c8\u30b9\u30b1\u30fc\u30eb\u3055\u305b\u308b\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u8a2d\u5b9a<\/span>\r\n  scaleTargetRef<\/span>:<\/span>\r\n    apiVersion<\/span>:<\/span> apps\/v1<\/span>\r\n    kind<\/span>:<\/span> Deployment<\/span>\r\n    name<\/span>:<\/span> WebFrontend<\/span>\r\n  # downscale\u3059\u308b\u6700\u5c0f\u5024<\/span>\r\n  minReplicas<\/span>:<\/span> 2<\/span>\r\n  # upscale\u3059\u308b\u6700\u5927\u5024<\/span>\r\n  maxReplicas<\/span>:<\/span> 5<\/span>\r\n  # \u3059\u3079\u3066\u306ePod\u306e\u5e73\u5747CPU\u4f7f\u7528\u7387\u306e\u76ee\u6a19\u5024(\uff05\u306e\u5024\u3092\u8a2d\u5b9a\u3059\u308b)<\/span>\r\n  targetCPUUtilizationPercentage<\/span>:<\/span> 70<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u91cc\u91cd\u8981\u7684\u662f HorizontalPodAutoscalerController \u4f1a\u6536\u96c6\u6307\u6807\uff0c\u5e76\u8c03\u6574\u526f\u672c\u6570\u91cf\uff0c\u4f7f\u6240\u6709 Pod \u7684\u5e73\u5747\u503c\u63a5\u8fd1\u8bbe\u5b9a\u7684\u76ee\u6807 CPU \u5229\u7528\u7387\u767e\u5206\u6bd4\uff08targetCPUUtilizationPercentage\uff09\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5728\u4e0a\u8ff0\u914d\u7f6e\u4e2d\uff0c\u5982\u679c\u5e73\u5747 CPU \u4f7f\u7528\u7387\u8d85\u8fc770\uff05\uff0c\u5219\u4f1a\u8fdb\u884c\u6269\u5bb9\uff0c\u5982\u679c\u6ca1\u6709\u8fbe\u5230 70\uff05\uff0c\u5219\u4f1a\u8fdb\u884c\u7f29\u5bb9\u3002 Pod \u6570\u91cf\u7684\u8ba1\u7b97\u516c\u5f0f\u5982\u4e0b\u3002<\/p>\n
TargetNumOfPods = ceil(sum(CurrentPodsCPUUtilization) \/ targetCPUUtilizationPercentage)\r\n<\/code><\/pre>\n
\u5728\u5229\u7528\u65f6\u9700\u6ce8\u610f\u7684\u4e8b\u9879<\/h2>\n
\u5f53\u4f7f\u7528ReplicationController\u8fdb\u884c\u6eda\u52a8\u66f4\u65b0\u65f6\uff0c\u5b83\u5c06\u88ab\u6392\u9664\u5728HorizontalPodAutoScaler\u7684\u9002\u7528\u8303\u56f4\u4e4b\u5916\u3002<\/h3>\n
\u76ee\u524d\u6211\u8ba4\u4e3a\u51e0\u4e4e\u6ca1\u6709\u4eba\u5728\u4f7f\u7528HorizontalPodAutoScaler\u548cReplicationController\uff0c\u4f46\u5982\u679c\u5728ReplicationController\u4e2d\u4f7f\u7528HorizontalPodAutoScaler\uff0c\u9700\u8981\u6ce8\u610f\u3002\u5f53\u4f7f\u7528kubectl rolling-update\u547d\u4ee4\u66f4\u65b0ReplicationController\u65f6\uff0c\u4f1a\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\uff0c\u56e0\u6b64\u65b0\u5bf9\u8c61\u4e0d\u4f1a\u7ed1\u5b9a\u5230HorizontalPodAutoScaler\u7684\u76ee\u6807\u4e0a\u3002\u5982\u679c\u8981\u4f7f\u7528HorizontalPodAutoscaler\uff0c\u8bf7\u4f7f\u7528Deployment\u3002<\/p>\n
\u5982\u679c\u51fa\u73b0\u4e86\u5207\u5272\u95ee\u9898\uff0c\u8bf7\u8c03\u6574ControllerManager\u7684\u53c2\u6570\u3002<\/h3>\n
\u5ea6\u91cf\u8861\u7ecf\u5e38\u4f1a\u88ab\u52a8\u6001\u8bc4\u4f30\uff0c\u5e76\u53ef\u80fd\u9891\u7e41\u5730\u4e0a\u8c03\u6216\u4e0b\u8c03\u3002\u8fd9\u88ab\u79f0\u4e3a\u5207\u6362\u3002\u4e3a\u4e86\u7f13\u89e3\u8fd9\u4e2a\u95ee\u9898\uff0cControllerManager\u4e2d\u5177\u6709–horizontal-pod-autoscaler-downscale-delay\u548c–horizontal-pod-autoscaler-upscale-delay\u8fd9\u4e24\u4e2a\u53c2\u6570\u3002\u8fd9\u4e9b\u53c2\u6570\u662f\u7528\u6765\u5728\u8fdb\u884c\u4e0b\u8c03\u6216\u4e0a\u8c03\u65f6\uff0c\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u540e\u518d\u6b21\u6267\u884c\u76f8\u540c\u7684\u64cd\u4f5c\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4e0b\u8c03\u4e3a5\u5206\u949f\uff0c\u4e0a\u8c03\u4e3a3\u5206\u949f\u3002\u8fd9\u4e9b\u53c2\u6570\u7684\u8bbe\u7f6e\u4f1a\u5f71\u54cd\u4e0a\u8c03\u6216\u4e0b\u8c03\u7684\u5ef6\u8fdf\u65f6\u95f4\uff0c\u56e0\u6b64\u5728\u8fdb\u884c\u8c03\u6574\u65f6\u8981\u6ce8\u610f\u3002<\/p>\n
\u4eceV2\u7248\u672c\u5f00\u59cb\u652f\u6301\u7684\u529f\u80fd<\/h2>\n
\u591a\u5143\u6307\u6807<\/h3>\n
\u73b0\u5728\u53ef\u4ee5\u6839\u636e\u591a\u4e2a\u6307\u6807\u8fdb\u884c\u81ea\u52a8\u7f29\u653e\u3002\u5982\u679c\u8bbe\u7f6e\u4e86\u591a\u4e2a\u6307\u6807\uff0c\u5c06\u6839\u636e\u6bcf\u4e2a\u6307\u6807\u8fdb\u884c\u8bc4\u4f30\u5e76\u9009\u62e9\u6700\u5927\u7684\u526f\u672c\u6570\u91cf\u3002\u8981\u8fdb\u884c\u591a\u4e2a\u8bbe\u7f6e\uff0c\u8bf7\u6309\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n
kind<\/span>:<\/span> HorizontalPodAutoscaler<\/span>\r\napiVersion<\/span>:<\/span> autoscaling\/v2beta1<\/span>\r\nspec<\/span>:<\/span>\r\n  scaleTargetRef<\/span>:<\/span>\r\n    kind<\/span>:<\/span> Deployment<\/span>\r\n    name<\/span>:<\/span> WebFrontend<\/span>\r\n  minReplicas<\/span>:<\/span> 2<\/span>\r\n  maxReplicas<\/span>:<\/span> 10<\/span>\r\n  metrics<\/span>:<\/span>\r\n  -<\/span> type<\/span>:<\/span> Resource<\/span>\r\n    resource<\/span>:<\/span>\r\n      name<\/span>:<\/span> cpu<\/span>\r\n      targetAverageUtilization<\/span>:<\/span> 80<\/span>\r\n  -<\/span> type<\/span>:<\/span> Object<\/span>\r\n    object<\/span>:<\/span>\r\n      target<\/span>:<\/span>\r\n        kind<\/span>:<\/span> Service<\/span>\r\n        name<\/span>:<\/span> Frontend<\/span>\r\n      metricName<\/span>:<\/span> hits-per-second<\/span>\r\n      targetValue<\/span>:<\/span> 1k<\/span>\r\n<\/code><\/pre>\n
\u8bf7\u53c2\u8003\u6b64\u5904\u7684\u5b9a\u4e49\u4ee5\u83b7\u53d6\u5404\u4e2a\u503c\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n
\u5b9a\u5236\u6307\u6807<\/h3>\n
\u73b0\u5728\u53ef\u4ee5\u901a\u8fc7\u81ea\u5b9a\u4e49\u6307\u6807\u8fdb\u884c\u81ea\u52a8\u6269\u5c55\u3002
\n\u4e3a\u4e86\u4f7f\u7528\u8fd9\u4e2a\u529f\u80fd\uff0c\u60a8\u9700\u8981\u8fdb\u884c\u4ee5\u4e0b\u914d\u7f6e\u3002<\/p>\n
    \n
  • \n
      API aggregation\u306e\u8a2d\u5b9a<\/ul>\n<\/li>\n<\/ul>\n
      API\u30b5\u30fc\u30d0\u3092\u7d4c\u7531\u3057\u3066\u4efb\u610f\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059
      \n\u8a2d\u5b9a\u306e\u65b9\u6cd5\u306a\u3069\u306f\u3053\u3061\u3089\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n
      ControllerManager\u3092\u8a2d\u5b9a\u3059\u308b<\/p>\n
      –horizontal-pod-autoscaler-use-rest-clients\u3092true\u306b\u3059\u308b<\/p>\n
      \u5982\u679c\u4f7f\u7528minikube\uff0c\u4e0a\u8ff0\u5185\u5bb9\u5df2\u7ecf\u8bbe\u7f6e\u597d\uff0c\u65e0\u9700\u8fdb\u884c\u4efb\u4f55\u7279\u6b8a\u914d\u7f6e\u3002\u6709\u4e00\u4e2a\u793a\u4f8b\u53ef\u4ee5\u5728https:\/\/github.com\/kubernetes-incubator\/custom-metrics-apiserver\u627e\u5230\u81ea\u5b9a\u4e49\u5ea6\u91cf\u670d\u52a1\u5668\uff0c\u53ef\u4ee5\u4ee5\u6b64\u4e3a\u57fa\u7840\u8fdb\u884c\u521b\u5efa\uff0c\u4f46\u6b64\u6b21\u6211\u4eec\u5c06\u4f7f\u7528\u9884\u5148\u51c6\u5907\u597d\u7684\u793a\u4f8b\u8fdb\u884c\u914d\u7f6e\u5c1d\u8bd5\u3002<\/p>\n
      \u5c3d\u7ba1\u5185\u5bb9\u7a0d\u663e\u9648\u65e7\uff0c\u4f46\u662f\u6211\u5728https:\/\/docs.bitnami.com\/kubernetes\/how-to\/configure-autoscaling-custom-metrics\/\u627e\u5230\u4e86\u6709\u5173\u914d\u7f6e\u81ea\u5b9a\u4e49\u5ea6\u91cf\u7684\u65b9\u6cd5\uff0c\u6240\u4ee5\u6211\u5c06\u53c2\u8003\u8be5\u65b9\u6cd5\u6765\u5c1d\u8bd5\u4f7f\u7528\u793a\u4f8b\u5e94\u7528\u7a0b\u5e8f\u7684\u81ea\u5b9a\u4e49\u5ea6\u91cf\u8fdb\u884c\u81ea\u52a8\u7f29\u653e\u3002<\/p>\n
      # \u30b5\u30f3\u30d7\u30eb\u306e\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u304c\u542b\u307e\u308c\u308b\u30ea\u30dd\u30b8\u30c8\u30ea\u3092\u53d6\u5f97\r\n$ git clone git@github.com:luxas\/kubeadm-workshop.git\r\n$ cd kubeadm-workshop\r\n\r\n# Prometheus\u306e\u30c7\u30d7\u30ed\u30a4\r\n# \u3053\u306e\u4f8b\u3067\u306fPrometheus\u306e\u30e1\u30c8\u30ea\u30af\u30b9\u3092\u5229\u7528\u3057\u3066\u30aa\u30fc\u30c8\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3059\u308b\u305f\u3081Prometheus\u3092\u7528\u610f\u3057\u307e\u3059\r\n$ kubectl apply -f demos\/monitoring\/prometheus-operator.yaml\r\n$ kubectl apply -f demos\/monitoring\/sample-prometheus-instance.yaml.yaml\r\n\r\n# \u30ab\u30b9\u30bf\u30e0\u30e1\u30c8\u30ea\u30af\u30b9\u30b5\u30fc\u30d0\u306e\u30c7\u30d7\u30ed\u30a4\r\n$ kubectl apply -f demos\/monitoring\/custom-metrics.yaml\r\n\r\n# \u78ba\u8a8d\r\n$ kubectl api-versions\r\n# custom.metrics.k8s.io\/v1beta1 \u304c\u767b\u9332\u3055\u308c\u3066\u3044\u308b\r\n$ kubectl get --raw apis\/custom.metrics.k8s.io\/v1beta1\r\n{\"kind\":\"APIResourceList\",\"apiVersion\":\"v1\",\"groupVersion\":\"custom.metrics.k8s.io\/v1beta1\",\"resources\":[{\"name\":\"namespaces\/scrape_duration_seconds\",\"singularName\":\"\",\"namespaced\":false,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"services\/scrape_duration_seconds\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"jobs.batch\/scrape_samples_post_metric_relabeling\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"namespaces\/up\",\"singularName\":\"\",\"namespaced\":false,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"jobs.batch\/http_requests\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"namespaces\/http_requests\",\"singularName\":\"\",\"namespaced\":false,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"jobs.batch\/scrape_duration_seconds\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"services\/scrape_samples_post_metric_relabeling\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"services\/scrape_samples_scraped\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"namespaces\/scrape_samples_scraped\",\"singularName\":\"\",\"namespaced\":false,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"pods\/scrape_samples_scraped\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"pods\/http_requests\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"services\/http_requests\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"pods\/scrape_duration_seconds\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"namespaces\/scrape_samples_post_metric_relabeling\",\"singularName\":\"\",\"namespaced\":false,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"pods\/scrape_samples_post_metric_relabeling\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"jobs.batch\/scrape_samples_scraped\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"jobs.batch\/up\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"pods\/up\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]},{\"name\":\"services\/up\",\"singularName\":\"\",\"namespaced\":true,\"kind\":\"MetricValueList\",\"verbs\":[\"get\"]}]}\r\n\r\n# \u30b5\u30f3\u30d7\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30c7\u30d7\u30ed\u30a4\r\n$ kubectl apply -f demos\/monitoring\/sample-metrics-app.yaml\r\n\r\n# hpa \u3092\u78ba\u8a8d\r\n$ kubectl get hpa\r\nNAME                     REFERENCE                       TARGETS    MINPODS   MAXPODS   REPLICAS   AGE\r\nsample-metrics-app-hpa   Deployment\/sample-metrics-app   866m\/100   2         10        2          2h\r\n<\/code><\/pre>\n
      HPA\u7684\u5185\u5bb9\u88ab\u8bbe\u7f6e\u5982\u4e0b\u3002<\/p>\n
      kind: HorizontalPodAutoscaler\r\napiVersion: autoscaling\/v2beta1\r\nmetadata:\r\n  name: sample-metrics-app-hpa\r\nspec:\r\n  scaleTargetRef:\r\n    apiVersion: apps\/v1\r\n    kind: Deployment\r\n    name: sample-metrics-app\r\n  minReplicas: 2\r\n  maxReplicas: 10\r\n  metrics:\r\n  - type: Object\r\n    object:\r\n      target:\r\n        kind: Service\r\n        name: sample-metrics-app\r\n      metricName: http_requests\r\n      targetValue: 100\r\n<\/code><\/pre>\n
      \u8fd9\u662f\u8bbe\u7f6esample-metrics-app\u670d\u52a1\u7684QPS\u4e3a\u6bcf\u4e2aPod 100QPS\uff0c\u4ee5\u5b9e\u73b0\u81ea\u52a8\u7f29\u653e\u3002
      \n\u5b9e\u9645\u6d4b\u8bd5\u8d1f\u8f7d\u540e\uff0c\u81ea\u52a8\u7f29\u653e\u6309\u4ee5\u4e0b\u65b9\u5f0f\u6267\u884c\u3002<\/p>\n
      NAME                     REFERENCE                       TARGETS    MINPODS   MAXPODS   REPLICAS   AGE\r\nsample-metrics-app-hpa   Deployment\/sample-metrics-app   603\/100   2         10        6          2h\r\n<\/code><\/pre>\n
      \u8bf7\u53c2\u7167\u4e0b\u9762\u7684\u7ffb\u8bd1\uff1a<\/h2>\n
        \n
      • \n
          https:\/\/kubernetes.io\/docs\/tasks\/run-application\/horizontal-pod-autoscale\/<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            \n
          • \n
              https:\/\/github.com\/kubernetes\/community\/blob\/master\/contributors\/design-proposals\/autoscaling\/horizontal-pod-autoscaler.md#autoscaling-algorithm<\/ul>\n<\/li>\n<\/ul>\n
               <\/p>\n
                \n
              • \n
                  https:\/\/github.com\/kubernetes-incubator\/custom-metrics-apiserver<\/ul>\n<\/li>\n<\/ul>\n
                   <\/p>\n
                    https:\/\/docs.bitnami.com\/kubernetes\/how-to\/configure-autoscaling-custom-metrics\/<\/ul>\n","protected":false},"excerpt":{"rendered":"
                    \u6b64\u6587\u6863\u57fa\u4e8e HPA v1(v2beta1) \uff0c\u76ee\u524d\uff082021\/12\uff09\u5df2\u7ecf\u6210\u4e3a\u4e0d\u63a8\u8350\u4f7f\u7528\u7684\u65b9\u6cd5\u3002\u6700\u65b0\u5185\u5bb9\u5df2\u6574\u7406\u5728 […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43850","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nKubernetes \u7684\u6c34\u5e73\u81ea\u52a8\u7f29\u653e - 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\/kubernetes-\u7684\u6c34\u5e73\u81ea\u52a8\u7f29\u653e\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kubernetes \u7684\u6c34\u5e73\u81ea\u52a8\u7f29\u653e\" \/>\n<meta property=\"og:description\" content=\"\u6b64\u6587\u6863\u57fa\u4e8e HPA v1(v2beta1) \uff0c\u76ee\u524d\uff082021\/12\uff09\u5df2\u7ecf\u6210\u4e3a\u4e0d\u63a8\u8350\u4f7f\u7528\u7684\u65b9\u6cd5\u3002\u6700\u65b0\u5185\u5bb9\u5df2\u6574\u7406\u5728 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-\u7684\u6c34\u5e73\u81ea\u52a8\u7f29\u653e\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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