{"id":1739,"date":"2020-06-25T23:43:00","date_gmt":"2020-06-25T15:43:00","guid":{"rendered":"http:\/\/39.97.231.10\/?p=1739"},"modified":"2020-06-25T23:43:00","modified_gmt":"2020-06-25T15:43:00","slug":"kube-scheduler%e8%b0%83%e5%ba%a6%e5%99%a8%e6%80%a7%e8%83%bd%e8%b0%83%e4%bc%98","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=1739","title":{"rendered":"kube-scheduler\u8c03\u5ea6\u5668\u6027\u80fd\u8c03\u4f18"},"content":{"rendered":"<h1 data-mpa-powered-by=\\\"yiban.io\\\">\u00a0 \u00a0\u8c03\u5ea6\u5668\u6027\u80fd\u8c03\u4f18\u00a0 \u00a0<\/h1>\n<section><\/section>\n<section>\u4f5c\u4e3a kubernetes \u96c6\u7fa4\u7684\u9ed8\u8ba4\u8c03\u5ea6\u5668\uff0ckube-scheduler\u00a0\u4e3b\u8981\u8d1f\u8d23\u5c06 Pod \u8c03\u5ea6\u5230\u96c6\u7fa4\u7684 Node \u4e0a\u3002\u5728\u4e00\u4e2a\u96c6\u7fa4\u4e2d\uff0c\u6ee1\u8db3\u4e00\u4e2a Pod \u8c03\u5ea6\u8bf7\u6c42\u7684\u6240\u6709 Node \u79f0\u4e4b\u4e3a\u00a0\u53ef\u8c03\u5ea6\u00a0Node\u3002\u8c03\u5ea6\u5668\u5148\u5728\u96c6\u7fa4\u4e2d\u627e\u5230\u4e00\u4e2a Pod \u7684\u53ef\u8c03\u5ea6 Node\uff0c\u7136\u540e\u6839\u636e\u4e00\u7cfb\u5217\u51fd\u6570\u5bf9\u8fd9\u4e9b\u53ef\u8c03\u5ea6 Node\u6253\u5206\uff0c\u4e4b\u540e\u9009\u51fa\u5176\u4e2d\u5f97\u5206\u6700\u9ad8\u7684 Node \u6765\u8fd0\u884c Pod\u3002\u6700\u540e\uff0c\u8c03\u5ea6\u5668\u5c06\u8fd9\u4e2a\u8c03\u5ea6\u51b3\u5b9a\u544a\u77e5 kube-apiserver\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u53eb\u505a\u7ed1\u5b9a\u3002<\/section>\n<section>\u5728\u5927\u89c4\u6a21 Kubernetes \u96c6\u7fa4\u4e0b\u8c03\u5ea6\u5668\u6027\u80fd\u4f18\u5316\u7684\u65b9\u5f0f\u4e2d\u3002\u53ef\u4ee5\u8c03\u8282\u8c03\u5ea6\u5668\u7684\u8868\u73b0\u6765\u5e73\u8861\u8c03\u5ea6\u7684\u5ef6\u8fdf\uff08\u65b0 Pod \u5feb\u901f\u5c31\u4f4d\uff09\u548c\u7cbe\u5ea6\uff08\u8c03\u5ea6\u5668\u5f88\u5c11\u505a\u51fa\u7cdf\u7cd5\u7684\u653e\u7f6e\u51b3\u7b56\uff09\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e kube-scheduler \u7684 percentageOfNodesToScore \u6765\u914d\u7f6e\u8fd9\u4e2a\u8c03\u4f18\u8bbe\u7f6e\u3002\u8fd9\u4e2a KubeSchedulerConfiguration \u8bbe\u7f6e\u51b3\u5b9a\u4e86\u8c03\u5ea6\u96c6\u7fa4\u4e2d\u8282\u70b9\u7684\u9608\u503c\u3002<\/section>\n<h3>\u00a0<\/h3>\n<h3>\u00a0 \u00a0\u8bbe\u7f6e\u9608\u503c\u00a0 \u00a0<\/h3>\n<p>percentageOfNodesToScore \u9009\u9879\u63a5\u53d7\u4ece 0 \u5230 100 \u4e4b\u95f4\u7684\u6574\u6570\u503c\u30020 \u503c\u6bd4\u8f83\u7279\u6b8a\uff0c\u8868\u793a kube-scheduler \u5e94\u8be5\u4f7f\u7528\u5176\u7f16\u8bd1\u540e\u7684\u9ed8\u8ba4\u503c\u3002\u5982\u679c\u4f60\u8bbe\u7f6e percentageOfNodesToScore \u7684\u503c\u8d85\u8fc7\u4e86 100\uff0ckube-scheduler \u7684\u8868\u73b0\u7b49\u4ef7\u4e8e\u8bbe\u7f6e\u503c\u4e3a 100\u3002<\/p>\n<section>\u8981\u4fee\u6539\u8fd9\u4e2a\u503c\uff0c\u7f16\u8f91 kube-scheduler \u7684\u914d\u7f6e\u6587\u4ef6\uff08\u901a\u5e38\u662f\u00a0\/etc\/kubernetes\/config\/kube-scheduler.yaml\uff09\uff0c\u7136\u540e\u91cd\u542f\u8c03\u5ea6\u5668\u3002<\/section>\n<section>\u4fee\u6539\u5b8c\u6210\u540e\uff0c\u68c0\u67e5\u8be5 kube-scheduler \u7ec4\u4ef6\u662f\u5426\u5065\u5eb7\u3002<\/section>\n<pre data-lang=\\\"properties\\\">kubectl get componentstatuses<br \/>\u200bNAME                 STATUS    MESSAGE             ERROR<br \/>controller-manager   Healthy   ok<br \/>scheduler            Healthy   ok...<\/pre>\n<h2>\u00a0<\/h2>\n<h2>\u00a0 \u00a0\u8282\u70b9\u6253\u5206\u9608\u503c\u00a0 \u00a0<\/h2>\n<p>\u8981\u63d0\u5347\u8c03\u5ea6\u6027\u80fd\uff0ckube-scheduler \u53ef\u4ee5\u5728\u627e\u5230\u8db3\u591f\u7684\u53ef\u8c03\u5ea6\u8282\u70b9\u4e4b\u540e\u505c\u6b62\u67e5\u627e\u3002\u5728\u5927\u89c4\u6a21\u96c6\u7fa4\u4e2d\uff0c\u6bd4\u8d77\u8003\u8651\u6bcf\u4e2a\u8282\u70b9\u7684\u7b80\u5355\u65b9\u6cd5\u76f8\u6bd4\u53ef\u4ee5\u8282\u7701\u65f6\u95f4\u3002<\/p>\n<section>\u4f60\u53ef\u4ee5\u4f7f\u7528\u6574\u4e2a\u96c6\u7fa4\u8282\u70b9\u603b\u6570\u7684\u767e\u5206\u6bd4\u4f5c\u4e3a\u9608\u503c\u6765\u6307\u5b9a\u9700\u8981\u591a\u5c11\u8282\u70b9\u5c31\u8db3\u591f\u3002kube-scheduler \u4f1a\u5c06\u5b83\u8f6c\u6362\u4e3a\u8282\u70b9\u6570\u7684\u6574\u6570\u503c\u3002\u5728\u8c03\u5ea6\u671f\u95f4\uff0c\u5982\u679c kube-scheduler \u5df2\u786e\u8ba4\u7684\u53ef\u8c03\u5ea6\u8282\u70b9\u6570\u8db3\u4ee5\u8d85\u8fc7\u4e86\u914d\u7f6e\u7684\u767e\u5206\u6bd4\u6570\u91cf\uff0ckube-scheduler \u5c06\u505c\u6b62\u7ee7\u7eed\u67e5\u627e\u53ef\u8c03\u5ea6\u8282\u70b9\u5e76\u7ee7\u7eed\u8fdb\u884c\u6253\u5206\u9636\u6bb5\u3002<\/section>\n<ul>\n<li>\n<h3>\u9ed8\u8ba4\u9608\u503c<\/h3>\n<\/li>\n<\/ul>\n<p>\u5982\u679c\u4f60\u4e0d\u6307\u5b9a\u9608\u503c\uff0cKubernetes \u4f7f\u7528\u7ebf\u6027\u516c\u5f0f\u8ba1\u7b97\u51fa\u4e00\u4e2a\u6bd4\u4f8b\uff0c\u5728 100-node \u96c6\u7fa4\u4e0b\u53d6 50%\uff0c\u5728 5000-node \u7684\u96c6\u7fa4\u4e0b\u53d6 10%\u3002\u8fd9\u4e2a\u81ea\u52a8\u8bbe\u7f6e\u7684\u53c2\u6570\u7684\u6700\u4f4e\u503c\u662f 5%\u3002\u8fd9\u610f\u5473\u7740\uff0c\u8c03\u5ea6\u5668\u81f3\u5c11\u4f1a\u5bf9\u96c6\u7fa4\u4e2d 5% \u7684\u8282\u70b9\u8fdb\u884c\u6253\u5206\uff0c\u9664\u975e\u7528\u6237\u5c06\u8be5\u53c2\u6570\u8bbe\u7f6e\u7684\u4f4e\u4e8e 5\u3002<\/p>\n<section>\u5982\u679c\u4f60\u60f3\u8ba9\u8c03\u5ea6\u5668\u5bf9\u96c6\u7fa4\u5185\u6240\u6709\u8282\u70b9\u8fdb\u884c\u6253\u5206\uff0c\u5219\u5c06 percentageOfNodesToScore \u8bbe\u7f6e\u4e3a 100\u3002<\/section>\n<section><\/section>\n<section>\u00a0<\/section>\n<h3>\u00a0\u793a\u4f8b\u00a0 \u00a0<\/h3>\n<section><\/section>\n<p>\u4e0b\u9762\u5c31\u662f\u4e00\u4e2a\u5c06 percentageOfNodesToScore \u53c2\u6570\u8bbe\u7f6e\u4e3a 50% \u7684\u4f8b\u5b50\u3002<\/p>\n<pre>\u00a0<\/pre>\n<pre data-lang=\\\"properties\\\">apiVersion: kubescheduler.config.k8s.io\/v1alpha1kind: KubeSchedulerConfigurationalgorithmSource:  provider: DefaultProvider\u200b...\u200bpercentageOfNodesToScore: 50<\/pre>\n<ul>\n<li>\n<p>\u8c03\u8282 percentageOfNodesToScore \u53c2\u6570<\/p>\n<\/li>\n<\/ul>\n<section><\/section>\n<section>percentageOfNodesToScore \u7684\u503c\u5fc5\u987b\u5728 1 \u5230 100 \u4e4b\u95f4\uff0c\u800c\u4e14\u5176\u9ed8\u8ba4\u503c\u662f\u901a\u8fc7\u96c6\u7fa4\u7684\u89c4\u6a21\u8ba1\u7b97\u5f97\u6765\u7684\u3002\u53e6\u5916\uff0c\u8fd8\u6709\u4e00\u4e2a 50 \u4e2a Node \u7684\u6700\u5c0f\u503c\u662f\u786c\u7f16\u7801\u5728\u7a0b\u5e8f\u4e2d\u3002<\/section>\n<blockquote>\u6ce8\u610f\uff1a\u00a0\u5f53\u96c6\u7fa4\u4e2d\u7684\u53ef\u8c03\u5ea6\u8282\u70b9\u5c11\u4e8e 50 \u4e2a\u65f6\uff0c\u8c03\u5ea6\u5668\u4ecd\u7136\u4f1a\u53bb\u68c0\u67e5\u6240\u6709\u7684 Node\uff0c\u56e0\u4e3a\u53ef\u8c03\u5ea6\u8282\u70b9\u592a\u5c11\uff0c\u4e0d\u8db3\u4ee5\u505c\u6b62\u8c03\u5ea6\u5668\u6700\u521d\u7684\u8fc7\u6ee4\u9009\u62e9\u3002\u540c\u7406\uff0c\u5728\u5c0f\u89c4\u6a21\u96c6\u7fa4\u4e2d\uff0c\u5982\u679c\u4f60\u5c06 percentageOfNodesToScore \u8bbe\u7f6e\u4e3a\u4e00\u4e2a\u8f83\u4f4e\u7684\u503c\uff0c\u5219\u6ca1\u6709\u6216\u8005\u53ea\u6709\u5f88\u5c0f\u7684\u6548\u679c\u3002\u5982\u679c\u96c6\u7fa4\u53ea\u6709\u51e0\u767e\u4e2a\u8282\u70b9\u6216\u8005\u66f4\u5c11\uff0c\u8bf7\u4fdd\u6301\u8fd9\u4e2a\u914d\u7f6e\u7684\u9ed8\u8ba4\u503c\u3002\u6539\u53d8\u57fa\u672c\u4e0d\u4f1a\u5bf9\u8c03\u5ea6\u5668\u7684\u6027\u80fd\u6709\u660e\u663e\u7684\u63d0\u5347\u3002<\/blockquote>\n<section>\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u8be5\u53c2\u6570\u8bbe\u7f6e\u540e\u53ef\u80fd\u4f1a\u5bfc\u81f4\u53ea\u6709\u96c6\u7fa4\u4e2d\u5c11\u6570\u8282\u70b9\u88ab\u9009\u4e3a\u53ef\u8c03\u5ea6\u8282\u70b9\uff0c\u5f88\u591a node \u90fd\u6ca1\u6709\u8fdb\u5165\u5230\u6253\u5206\u9636\u6bb5\u3002\u8fd9\u6837\u5c31\u4f1a\u9020\u6210\u4e00\u79cd\u540e\u679c\uff0c\u4e00\u4e2a\u672c\u6765\u53ef\u4ee5\u5728\u6253\u5206\u9636\u6bb5\u5f97\u5206\u5f88\u9ad8\u7684 Node \u751a\u81f3\u90fd\u4e0d\u80fd\u8fdb\u5165\u6253\u5206\u9636\u6bb5\u3002<\/section>\n<section>\u7531\u4e8e\u8fd9\u4e2a\u539f\u56e0\uff0c\u8fd9\u4e2a\u53c2\u6570\u4e0d\u5e94\u8be5\u88ab\u8bbe\u7f6e\u6210\u4e00\u4e2a\u5f88\u4f4e\u7684\u503c\u3002\u901a\u5e38\u7684\u505a\u6cd5\u662f\u4e0d\u4f1a\u5c06\u8fd9\u4e2a\u53c2\u6570\u7684\u503c\u8bbe\u7f6e\u7684\u4f4e\u4e8e 10\u3002\u5f88\u4f4e\u7684\u53c2\u6570\u503c\u4e00\u822c\u5728\u8c03\u5ea6\u5668\u7684\u541e\u5410\u91cf\u5f88\u9ad8\u4e14\u5bf9 node \u7684\u6253\u5206\u4e0d\u91cd\u8981\u7684\u60c5\u51b5\u4e0b\u624d\u4f7f\u7528\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u53ea\u6709\u5f53\u4f60\u66f4\u503e\u5411\u4e8e\u5728\u53ef\u8c03\u5ea6\u8282\u70b9\u4e2d\u4efb\u610f\u9009\u62e9\u4e00\u4e2a Node \u6765\u8fd0\u884c\u8fd9\u4e2a Pod \u65f6\uff0c\u624d\u4f7f\u7528\u5f88\u4f4e\u7684\u53c2\u6570\u8bbe\u7f6e\u3002<\/section>\n<ul>\n<li>\n<h3>\u8c03\u5ea6\u5668\u505a\u8c03\u5ea6\u9009\u62e9\u5982\u4f55\u8986\u76d6\u6240\u6709\u7684 Node<\/h3>\n<\/li>\n<\/ul>\n<section><\/section>\n<section>\u5728\u5c06 Pod \u8c03\u5ea6\u5230 Node \u4e0a\u65f6\uff0c\u4e3a\u4e86\u8ba9\u96c6\u7fa4\u4e2d\u6240\u6709 Node \u90fd\u6709\u516c\u5e73\u7684\u673a\u4f1a\u53bb\u8fd0\u884c\u8fd9\u4e9b Pod\uff0c\u8c03\u5ea6\u5668\u5c06\u4f1a\u4ee5\u8f6e\u8be2\u7684\u65b9\u5f0f\u8986\u76d6\u5168\u90e8\u7684 Node\u3002\u4f60\u53ef\u4ee5\u5c06 Node \u5217\u8868\u60f3\u8c61\u6210\u4e00\u4e2a\u6570\u7ec4\u3002\u8c03\u5ea6\u5668\u4ece\u6570\u7ec4\u7684\u5934\u90e8\u5f00\u59cb\u7b5b\u9009\u53ef\u8c03\u5ea6\u8282\u70b9\uff0c\u4f9d\u6b21\u5411\u540e\u76f4\u5230\u53ef\u8c03\u5ea6\u8282\u70b9\u7684\u6570\u91cf\u8fbe\u5230 percentageOfNodesToScore \u53c2\u6570\u7684\u8981\u6c42\u3002\u5728\u5bf9\u4e0b\u4e00\u4e2a Pod \u8fdb\u884c\u8c03\u5ea6\u7684\u65f6\u5019\uff0c\u524d\u4e00\u4e2a Pod \u8c03\u5ea6\u7b5b\u9009\u505c\u6b62\u7684 Node \u5217\u8868\u7684\u4f4d\u7f6e\uff0c\u5c06\u4f1a\u6765\u4f5c\u4e3a\u8fd9\u6b21\u8c03\u5ea6\u7b5b\u9009 Node \u5f00\u59cb\u7684\u4f4d\u7f6e\u3002<\/section>\n<section>\u5982\u679c\u96c6\u7fa4\u4e2d\u7684 Node \u5728\u591a\u4e2a\u533a\u57df\uff0c\u90a3\u4e48\u8c03\u5ea6\u5668\u5c06\u4ece\u4e0d\u540c\u7684\u533a\u57df\u4e2d\u8f6e\u8be2 Node\uff0c\u6765\u786e\u4fdd\u4e0d\u540c\u533a\u57df\u7684 Node \u63a5\u53d7\u53ef\u8c03\u5ea6\u6027\u68c0\u67e5\u3002\u5982\u4e0b\u4f8b\uff0c\u8003\u8651\u4e24\u4e2a\u533a\u57df\u4e2d\u7684\u516d\u4e2a\u8282\u70b9\uff1a<\/section>\n<pre data-lang=\\\"properties\\\">Zone 1: Node 1, Node 2, Node 3, Node 4Zone 2: Node 5, Node 6<\/pre>\n<p>\u8c03\u5ea6\u5668\u5c06\u4f1a\u6309\u7167\u5982\u4e0b\u987a\u5e8f\u53bb\u8bc4\u4f30Node\u7684\u53ef\u8c03\u5ea6\u6027\uff1a<\/p>\n<pre data-lang=\\\"nginx\\\">Node\u00a01,\u00a0Node\u00a05,\u00a0Node\u00a02,\u00a0Node\u00a06,\u00a0Node\u00a03,\u00a0Node\u00a04<\/pre>\n<pre>\u5728\u8bc4\u4f30\u5b8c\u6240\u6709 Node \u540e\uff0c\u5c06\u4f1a\u8fd4\u56de\u5230 Node 1\uff0c\u4ece\u5934\u5f00\u59cb\u3002<\/pre>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 \u00a0\u8c03\u5ea6\u5668\u6027\u80fd\u8c03\u4f18\u00a0 \u00a0 \u4f5c\u4e3a kubernetes \u96c6\u7fa4\u7684\u9ed8\u8ba4\u8c03\u5ea6\u5668\uff0ckube-scheduler\u00a0\u4e3b\u8981\u8d1f &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=1739\"> <span class=\"screen-reader-text\">kube-scheduler\u8c03\u5ea6\u5668\u6027\u80fd\u8c03\u4f18<\/span> \u67e5\u770b\u5168\u6587 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