{"id":43763,"date":"2023-01-14T00:49:44","date_gmt":"2022-07-24T06:27:56","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kubernetes%e8%bf%9b%e8%a1%8c%e4%ba%86datadog-%e6%b0%b4%e5%b9%b3pod%e8%87%aa%e5%8a%a8%e7%bc%a9%e6%94%be%e3%80%82\/"},"modified":"2024-01-15T11:47:19","modified_gmt":"2024-01-15T03:47:19","slug":"%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kubernetes%e8%bf%9b%e8%a1%8c%e4%ba%86datadog-%e6%b0%b4%e5%b9%b3pod%e8%87%aa%e5%8a%a8%e7%bc%a9%e6%94%be%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kubernetes%e8%bf%9b%e8%a1%8c%e4%ba%86datadog-%e6%b0%b4%e5%b9%b3pod%e8%87%aa%e5%8a%a8%e7%bc%a9%e6%94%be%e3%80%82\/","title":{"rendered":"\u6211\u5c1d\u8bd5\u4f7f\u7528Kubernetes\u8fdb\u884c\u4e86Datadog +\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e"},"content":{"rendered":"<h1>\u6458\u8981<\/h1>\n<h2>\u7b80\u800c\u8a00\u4e4b<\/h2>\n<p>\u5982\u679c\u4f7f\u7528Datadog\u7684\u6307\u6a19\u4f86\u8a2d\u5b9aHorizontal Pod Autoscaler\uff0c\u6703\u975e\u5e38\u65b9\u4fbf\uff08\u8a2d\u5b9a\u4e5f\u5f88\u7c21\u55ae\uff09\u3002<\/p>\n<p>\u53ea\u6709\u4eceAWS Integration\u83b7\u53d6\u7684\u6307\u6807\u6709\u70b9\u56f0\u96be\uff08\u89c1\u540e\u6587\uff09<\/p>\n<h2>\u80cc\u666f &#8211; \u80cc\u666f\u8d44\u6599, \u80cc\u666f\u60c5\u51b5, \u80cc\u666f\u80cc\u79bb<\/h2>\n<p>\u6211\u8ba4\u4e3a\u5f88\u591a\u4eba\u90fd\u5728\u4f7f\u7528Kubernetes\u7684Horizontal Pod Autoscaler\uff0c\u4f46\u662f\u4f60\u4eec\u662f\u7528\u4ec0\u4e48\u6837\u7684\u503c\u8fdb\u884c\u81ea\u52a8\u7f29\u653e\u7684\u5462\uff1f<br \/>\n\u6211\u4eec\u6700\u5f00\u59cb\u662f\u7528CPU\u548c\u5185\u5b58\u6765\u505a\u7684\uff0c\u4f46\u662f\u9010\u6e10\u4e0d\u6ee1\u610f\uff0c\u60f3\u8981\u4f7f\u7528\u5404\u79cd\u5404\u6837\u7684\u6307\u6807\u3002\u7531\u4e8e\u53ef\u4ee5\u4f7f\u7528\u81ea\u5b9a\u4e49\u6307\u6807\uff0c\u6240\u4ee5\u6211\u4eec\u8003\u8651\u4f7f\u7528\u90a3\u4e2a\uff0c\u4f46\u662f\u5728\u8c03\u67e5\u65f6\u53d1\u73b0\u5e38\u5e38\u63a8\u8350\u4f7f\u7528Prometheus\u7684\u65b9\u6cd5\u3002\u539f\u672c\u5df2\u7ecf\u5728\u4f7f\u7528Prometheus\u7684\u4eba\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528\uff0c\u4f46\u6211\u4eec\u5e76\u4e0d\u662f\uff0c\u6240\u4ee5\u4e3a\u4e86HPA\u662f\u5426\u8981\u5b89\u88c5Prometheus\u800c\u82e6\u607c\u4e86\u4e00\u9635\u5b50\u3002<\/p>\n<p>\u7531\u4e8eCustom Metrics API\u7684\u89c4\u8303\u5df2\u7ecf\u516c\u5f00\uff0c\u56e0\u6b64\u53ef\u4ee5\u81ea\u5df1\u521b\u5efa\u5b83\uff0c\u4f46\u662f\u8fd9\u9700\u8981\u76f8\u5f53\u5927\u7684\u5de5\u4f5c\u91cf\uff0c\u56e0\u6b64\u6211\u4e00\u76f4\u65e0\u6cd5\u505a\u51fa\u51b3\u5b9a\u3002 [\u94fe\u63a5](https:\/\/github.com\/kubernetes\/community\/blob\/master\/contributors\/design-proposals\/instrumentation\/custom-metrics-api.md)<\/p>\n<p>\u8fdb\u4e00\u6b65\u8c03\u67e5\u53d1\u73b0\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5916\u90e8\u6307\u6807(HPA)\u6765\u8bbe\u7f6e\u5e76\u5229\u7528\u5916\u90e8\u6307\u6807\u3002\u7531\u4e8e\u6211\u4eec\u7684\u9879\u76ee\u5df2\u7ecf\u5f15\u5165\u4e86Datadog\uff0c\u6240\u4ee5\u6211\u4eec\u5f00\u59cb\u5728\u4f7f\u7528Datadog\u7684\u6307\u6807\u65b9\u9762\u8fdb\u884c\u8c03\u67e5\uff0c\u7ed3\u679c\u53d1\u73b0Datadog\u7684\u5b98\u65b9\u6587\u6863\u4e2d\u4ecb\u7ecd\u4e86\u4e00\u79cd\u5b8c\u5168\u5339\u914d\u7684\u65b9\u6cd5\u3002<\/p>\n<p>https:\/\/www.datadoghq.com\/blog\/autoscale-kubernetes-datadog\/<\/p>\n<p>\u56e0\u6b64\uff0c\u672c\u6587\u7684\u4e3b\u65e8\u662f\u4f7f\u7528\u5b83\u8fdb\u884cHPA\u8bbe\u7f6e\u540e\u53d8\u5f97\u975e\u5e38\u7b80\u5355\u548c\u65b9\u4fbf\u3002<\/p>\n<h1>\u8be6\u7ec6\u7684<\/h1>\n<p>\u57fa\u4e8e\u4e0a\u8ff0\u6587\u7ae0\u7684\u5185\u5bb9\uff0c\u53ea\u9700\u8981\u6309\u7167\u6240\u8ff0\u7684\u65b9\u5f0f\u8fdb\u884c\u64cd\u4f5c\u5373\u53ef\uff0c\u4f46\u662f\u8fd9\u6b21\u6211\u8fd8\u4f1a\u4ecb\u7ecd\u4e00\u79cd\u66f4\u7b80\u5355\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u8981\u5c06Datadog\u4f5c\u4e3aExternal Metrics Provider\u8fd0\u884c\uff0c\u9700\u8981\u5b89\u88c5Datadog Cluster Agent\u5e76\u6ce8\u518cAPIService\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2aYAML\u793a\u4f8b\uff0c\u901a\u8fc7kubectl apply\u547d\u4ee4\u5e94\u7528\u5b83\uff0c\u5c31\u53ef\u4ee5\u8fd0\u884c\u8d77\u6765\u3002<br \/>\nhttps:\/\/github.com\/DataDog\/datadog-agent\/tree\/9ceedbd0efb1efbf4de3f1f6d9f34206f2928f5b\/Dockerfiles\/manifests\/cluster-agent<\/p>\n<p>\u6709\u5173Datadog\u96c6\u7fa4\u4ee3\u7406\u7684\u8bf4\u660e\uff0c\u8bf7\u53c2\u8003\u4ee5\u4e0b\u94fe\u63a5\uff1a<br \/>\nhttps:\/\/docs.datadoghq.com\/agent\/kubernetes\/cluster\/<\/p>\n<p>Datadog\u901a\u5e38\u4e3a\u6bcf\u4e2a\u8282\u70b9\u90e8\u7f72\u4ee3\u7406\u7a0b\u5e8f\uff0c\u4f46\u8fd9\u6837\u4e00\u6765\uff0c\u4e3a\u4e86\u83b7\u53d6\u96c6\u7fa4\u7684\u6307\u6807\uff0c\u5fc5\u987b\u5c06k8s API\u6743\u9650\u4f20\u9012\u7ed9\u8282\u70b9\u7684\u4ee3\u7406\u7a0b\u5e8f\u3002\u800c\u5982\u679c\u6709Datadog\u96c6\u7fa4\u4ee3\u7406\u7a0b\u5e8f\uff0c\u5219\u53ea\u9700\u4e00\u4e2a\u4ee3\u7406\u7a0b\u5e8f\u5373\u53ef\u83b7\u53d6\u6574\u4e2a\u96c6\u7fa4\u7684\u4fe1\u606f\uff0c\u8fd9\u8fd8\u80fd\u51cf\u8f7b\u8d1f\u8f7d\u3002\u6b64\u5916\uff0c\u5b83\u4f3c\u4e4e\u8fd8\u53ef\u4ee5\u4f5c\u4e3a\u4f7f\u7528Datadog\u6307\u6807\u7684HPA\u7684\u6307\u6807API\u670d\u52a1\u5668\u3002\uff08\u5927\u6982\u662f\u8fd9\u6837\u5427\uff09\u3002<\/p>\n<h2>Helm\u56fe\u8868<\/h2>\n<p>\u6211\u5df2\u7ecf\u5728\u4e0a\u9762\u8d34\u51fa\u4e86\u4e00\u4e2aYAML\u4ed3\u5e93\uff0c\u5982\u679c\u4f7f\u7528Helm\uff0c\u53ea\u9700\u4f20\u9012\u9009\u9879\u5373\u53ef\u8fdb\u884c\u5b89\u88c5\u3002<br \/>\nhttps:\/\/github.com\/helm\/charts\/tree\/master\/stable\/datadog#enabling-the-datadog-cluster-agent<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> helm <span class=\"nb\">install<\/span> <span class=\"nt\">--name<\/span> datadog-monitoring <span class=\"se\">\\<\/span>\r\n    <span class=\"nt\">--set<\/span> datadog.apiKey<span class=\"o\">=<\/span>YOUR-API-KEY-HERE <span class=\"se\">\\<\/span>\r\n    <span class=\"nt\">--set<\/span> datadog.appKey<span class=\"o\">=<\/span>YOUR-APP-KEY-HERE <span class=\"se\">\\<\/span>\r\n    <span class=\"nt\">--set<\/span> clusterAgent.enabled<span class=\"o\">=<\/span><span class=\"nb\">true<\/span> <span class=\"se\">\\<\/span>\r\n    <span class=\"nt\">--set<\/span> clusterAgent.metricsProvider.enabled<span class=\"o\">=<\/span><span class=\"nb\">true<\/span> <span class=\"se\">\\<\/span>\r\n    stable\/datadog\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u4e2a\u64cd\u4f5c\uff0cDatadog\u96c6\u7fa4\u4ee3\u7406\u5c06\u88ab\u90e8\u7f72\u5e76\u5b8c\u6210APIService\u7684\u6ce8\u518c\u7b49\u64cd\u4f5c\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u73b0\u5728\u53ef\u4ee5\u4f7f\u7528HPA\u4e86\uff01<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> kubectl get pods | <span class=\"nb\">grep <\/span>datadog\r\n<span class=\"go\">datadog-cluster-agent-74f88b78d6-t9nrl        1\/1     Running     0          1h\r\ndatadog-datadog-k9fdl                         1\/1     Running     0          1h\r\ndatadog-datadog-qqm42                         1\/1     Running     0          1h\r\ndatadog-kube-state-metrics-5db89d6d78-qzlgc   1\/1     Running     0          1h\r\n<\/span><\/code><\/pre>\n<p>\u5982\u679c\u6709datadog-cluster-agent\uff0c\u90a3\u5c31\u6ca1\u95ee\u9898\u4e86\u3002kube-state-metrics\u5df2\u7ecf\u90e8\u7f72\u597d\u4e86\uff0c\u6240\u4ee5\u4e0d\u9700\u8981\u7684\u4eba\u53ef\u4ee5\u9009\u62e9\u4e0d\u5b89\u88c5\uff0c\u8fd8\u6709\u5176\u4ed6\u8be6\u7ec6\u8bbe\u7f6e\u7684\u4eba\u53ef\u4ee5\u67e5\u770bChart\u7684\u9009\u9879\u3002<\/p>\n<h2>H\u73c0A<\/h2>\n<p>\u5982\u679c\u4f7f\u7528nginx\u8bf7\u6c42\u6b21\u6570\u6765\u8fdb\u884c\u81ea\u52a8\u6269\u5c55\u7684\u793a\u4f8b\uff0c\u8bf7\u53c2\u8003\u4ee5\u4e0b\u94fe\u63a5\uff1a<br \/>\nhttps:\/\/github.com\/DataDog\/datadog-agent\/blob\/9ceedbd0efb1efbf4de3f1f6d9f34206f2928f5b\/Dockerfiles\/manifests\/cluster-agent\/hpa-example\/hpa-manifest.yaml<\/p>\n<p>\u7531\u4e8e\u76f8\u540c\u7684\u4e1c\u897f\u6ca1\u6709\u521b\u610f\uff0c\u6240\u4ee5\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528Redis\u7684key\u957f\u5ea6\u6765\u8fdb\u884c\u6269\u5c55\u3002<br \/>\n\u5728\u6211\u4eec\u7684\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u4e00\u4e2a\u540d\u4e3aCelery\u7684\u4efb\u52a1\u961f\u5217\u5de5\u5177\u3002<br \/>\n\u8fd9\u4e2a\u5de5\u5177\u53ef\u4ee5\u5c06Redis\u7528\u4f5c\u961f\u5217\uff08\u4e5f\u53ef\u4ee5\u4f7f\u7528SQS\u7b49\uff09\uff0c\u5e76\u4e14\u4f7f\u7528celery\u4f5c\u4e3akey\u6765\u7ba1\u7406\u4efb\u52a1\u3002<br \/>\n\u6362\u53e5\u8bdd\u8bf4\uff0ckey\u7684\u957f\u5ea6\u8868\u793a\u4efb\u52a1\u7684\u6570\u91cf\u3002\u5728\u8fd9\u4e2a\u6848\u4f8b\u4e2d\uff0c\u6211\u4eec\u60f3\u8981\u5728\u4efb\u52a1\u6570\u91cf\u5f88\u591a\u65f6\u6269\u5c55\u5de5\u4f5c\u8005\u3002<\/p>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u65e0\u6cd5\u83b7\u53d6Redis\u952e\u7684\u957f\u5ea6\uff0c\u56e0\u6b64\u9700\u8981\u5bf9Datadog Agent\u8fdb\u884c\u4e00\u4e9b\u8bbe\u7f6e\u8c03\u6574\u3002\u5c06\u4ee5\u4e0b\u5185\u5bb9\u914d\u7f6e\u5728values.yaml\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">clusterAgent<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">enabled<\/span><span class=\"pi\">:<\/span> <span class=\"no\">true<\/span>\r\n  <span class=\"na\">metricsProvider<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">enabled<\/span><span class=\"pi\">:<\/span> <span class=\"no\">true<\/span>\r\n\r\n<span class=\"na\">datadog<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">confd<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"s\">redisdb.yaml<\/span><span class=\"pi\">:<\/span> <span class=\"pi\">|-<\/span>\r\n      <span class=\"s\">init_config:<\/span>\r\n      <span class=\"s\">instances:<\/span>\r\n        <span class=\"s\">- host: \"redis.local\"<\/span>\r\n          <span class=\"s\">port: 6379<\/span>\r\n          <span class=\"s\">keys:<\/span>\r\n            <span class=\"s\">- celery<\/span>\r\n<\/code><\/pre>\n<p>\u5e94\u7528\u4e0a\u8ff0\u7684values.yaml\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> helm upgrade <span class=\"nt\">-f<\/span> values.yaml datadog-monitoring stable\/datadog\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u6307\u5b9aRedis\u7684\u4e3b\u673a\u540d\u6765\u83b7\u53d6\u952e\u7684\u957f\u5ea6\u3002\u5173\u4e8eDatadog\u7684\u8bbe\u7f6e\uff0c\u6211\u4eec\u4e0d\u8be6\u7ec6\u63d0\u53ca\u3002\u4eceDatadog\u7684\u754c\u9762\u4e0a\uff0c\u901a\u8fc7metrics: redis.key.length\u7684tag: key:celery\u6765\u786e\u8ba4\u662f\u5426\u53ef\u4ee5\u83b7\u53d6\u5230\u503c\u3002<\/p>\n<p>\u5982\u679c\u987a\u5229\u83b7\u53d6\u5230\u4e86\uff0c\u4e4b\u540e\u53ea\u9700\u8981\u8fdb\u884cHPA\u7684\u8bbe\u7f6e\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">autoscaling\/v2beta1<\/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\">celery-worker<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">minReplicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">2<\/span>\r\n  <span class=\"na\">maxReplicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">5<\/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\">celery-worker<\/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\">External<\/span>\r\n    <span class=\"na\">external<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">metricName<\/span><span class=\"pi\">:<\/span> <span class=\"s\">redis.key.length<\/span>\r\n      <span class=\"na\">metricSelector<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"na\">matchLabels<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">key<\/span><span class=\"pi\">:<\/span> <span class=\"s\">celery<\/span>\r\n      <span class=\"na\">targetAverageValue<\/span><span class=\"pi\">:<\/span> <span class=\"m\">4<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u6b63\u5728\u4e3a\u540d\u4e3acelery-worker\u7684Deployment\u8fdb\u884c\u81ea\u52a8\u4f38\u7f29\u7684\u914d\u7f6e\u3002<br \/>\ntargetAverageValue\u662f\u4e00\u4e2a\u76ee\u6807\u503c\uff0c\u5b83\u4f7f\u5f97\u5c06Pod\u7684\u6570\u91cf\u9664\u4ee5\u603b\u6570\u91cf\u63a5\u8fd1\u4e8e\u8be5\u503c\uff08\u6839\u636e\u6211\u7684\u7406\u89e3\uff09\u3002<br \/>\n\u66f4\u591a\u8be6\u7ec6\u4fe1\u606f\u8bf7\u53c2\u9605\u6587\u6863\u3002<br \/>\nhttps:\/\/kubernetes.io\/docs\/tasks\/run-application\/horizontal-pod-autoscale\/#algorithm-details<\/p>\n<p>\u8ba9\u6211\u4eec\u5e94\u7528\u4e0a\u9762\u7684YAML\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> kubectl apply <span class=\"nt\">-f<\/span> hpa.yaml\r\n<\/code><\/pre>\n<p>\u6211\u6765\u67e5\u770b\u4e00\u4e0bhpa\u7684\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> kubectl get hpa\r\n<span class=\"go\">NAME                         REFERENCE                   TARGETS             MINPODS   MAXPODS   REPLICAS   AGE\r\ncelery-worker                Deployment\/celery-worker    4\/4 (avg)   2         5         2          1m\r\n<\/span><\/code><\/pre>\n<p>\u76ee\u524d\u961f\u5217\u4e2d\u67098\u4e2a\u4efb\u52a1\u6ce8\u518c\u72b6\u6001\u3002\u7531\u4e8e\u526f\u672c\u6570\u4e3a2\uff0c\u6240\u4ee5\u5206\u5b50\u4e3a8\/2=4\u3002\u5206\u6bcd\u76844\u662f\u76ee\u6807\u5e73\u5747\u503c\u3002<br \/>\n\u5982\u679c\u73b0\u5728\u518d\u6ce8\u518c4\u4e2a\u4efb\u52a1\uff088+4=12\uff09\uff0c\u90a3\u4e48\u60c5\u51b5\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> kubectl get hpa\r\n<span class=\"go\">NAME                         REFERENCE                   TARGETS             MINPODS   MAXPODS   REPLICAS   AGE\r\ncelery-worker                Deployment\/celery-worker    6\/4 (avg)   2         5         2          2m\r\n<\/span><\/code><\/pre>\n<p>\u73b0\u5728\u6709\u4e24\u4e2aPod\uff0c\u6240\u4ee5\u7ed3\u679c\u662f12\/2=6\u3002<br \/>\n\u5982\u679c\u8fd9\u6837\u505a\uff0c\u4e3a\u4e86\u4f7ftargetAverageValue\u8fbe\u52304\uff0cPod\u5c06\u8fdb\u884c\u81ea\u52a8\u7f29\u653e\u3002<br \/>\n\u56e0\u6b64\uff0cPod\u5c06\u589e\u52a0\u4e00\u4e2a\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u7ed3\u679c\u5c06\u53d8\u4e3a12\/3=4\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> kubectl get hpa\r\n<span class=\"go\">NAME                         REFERENCE                   TARGETS             MINPODS   MAXPODS   REPLICAS   AGE\r\ncelery-worker                Deployment\/celery-worker    4\/4 (avg)   2         5         3          5m\r\n<\/span><\/code><\/pre>\n<p>\u526f\u672c\u6570\u91cf\u76ee\u524d\u4e3a3\u3002\u5982\u679c\u4efb\u52a1\u6570\u91cf\u51cf\u5c11\uff0c\u5c06\u4f1a\u8fdb\u884c\u7f29\u51cf\u3002<br \/>\n\u4ee5\u4e0a\u662f\u7ed3\u675f\u3002<\/p>\n<p>\u8fd9\u6b21\u6211\u4eec\u4f7f\u7528\u4e86Redis\u7684key\uff0c\u4f46\u4e5f\u53ef\u4ee5\u6839\u636eSQS\u7684\u6d88\u606f\u6570\u91cf\u6765\u8fdb\u884c\u81ea\u52a8\u6269\u5c55\uff0c\u6216\u8005\u6839\u636eALB\u7684\u54cd\u5e94\u65f6\u95f4\u6765\u8fdb\u884c\u589e\u52a0\u7b49\u7b49\u3002\u5982\u679c\u80fd\u4f7f\u7528Datadog\u7684\u6307\u6807\uff0c\u90a3\u4e48\u53ef\u80fd\u6027\u5c31\u662f\u65e0\u9650\u7684\u3002<br \/>\n*\u8865\u5145\uff1a\u76ee\u524d\u53d1\u73b0\u4f7f\u7528Datadog\u7684Cluster Agent\u7684\u9ed8\u8ba4\u503c\u4f1a\u51fa\u73b0\u95ee\u9898\uff0c\u5373\u4f7f\u6b63\u5e38\u6307\u5b9a\u4e86\u56fe\u8868\u4e5f\u65e0\u6cd5\u8fd0\u884c\u3002\u9700\u8981\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u5c06DD_EXTERNAL_METRICS_PROVIDER_MAX_AGE\u7684\u503c\u8bbe\u7f6e\u5f97\u66f4\u5927\u3002<\/p>\n<h1>\u603b\u7ed3<\/h1>\n<p>\u4f7f\u7528Datadog\u7684metrics\u6765\u8bbe\u7f6eHorizontal Pod Autoscaler\u975e\u5e38\u65b9\u4fbf\uff08\u8bbe\u7f6e\u4e5f\u5f88\u7b80\u5355\uff09\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6458\u8981 \u7b80\u800c\u8a00\u4e4b \u5982\u679c\u4f7f\u7528Datadog\u7684\u6307\u6a19\u4f86\u8a2d\u5b9aHorizontal Pod Autoscaler\uff0c\u6703\u975e\u5e38\u65b9 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43763","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>\u6211\u5c1d\u8bd5\u4f7f\u7528Kubernetes\u8fdb\u884c\u4e86Datadog +\u6c34\u5e73Pod\u81ea\u52a8\u7f29\u653e - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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