{"id":1570,"date":"2020-06-09T15:33:46","date_gmt":"2020-06-09T07:33:46","guid":{"rendered":"http:\/\/39.97.231.10\/?p=1570"},"modified":"2020-06-09T15:33:46","modified_gmt":"2020-06-09T07:33:46","slug":"kubernetes-nodes","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=1570","title":{"rendered":"Kubernetes Nodes"},"content":{"rendered":"<header class=\\\"entry-header\\\">\n<h1 class=\\\"entry-title\\\">Kubernetes Nodes<\/h1>\n<\/header>\n<div class=\\\"entry-content\\\">\n<div id=\\\"toc_container\\\" class=\\\"no_bullets\\\">\n<ul class=\\\"toc_list\\\">\n<li><span class=\\\"toc_number toc_depth_1\\\">1<\/span>\u00a0Node\u662f\u4ec0\u4e48\uff1f<\/li>\n<li><span class=\\\"toc_number toc_depth_1\\\">2<\/span>\u00a0Node Status\n<ul>\n<li><span class=\\\"toc_number toc_depth_2\\\">2.1<\/span>\u00a0Addresses<\/li>\n<li><span class=\\\"toc_number toc_depth_2\\\">2.2<\/span>\u00a0Phase<\/li>\n<li><span class=\\\"toc_number toc_depth_2\\\">2.3<\/span>\u00a0Condition<\/li>\n<li><span class=\\\"toc_number toc_depth_2\\\">2.4<\/span>\u00a0Capacity<\/li>\n<li><span class=\\\"toc_number toc_depth_2\\\">2.5<\/span>\u00a0Info<\/li>\n<\/ul>\n<\/li>\n<li><span class=\\\"toc_number toc_depth_1\\\">3<\/span>\u00a0Management\n<ul>\n<li><span class=\\\"toc_number toc_depth_2\\\">3.1<\/span>\u00a0Node Controller<\/li>\n<li><span class=\\\"toc_number toc_depth_2\\\">3.2<\/span>\u00a0Self-Registration of Nodes\n<ul>\n<li><span class=\\\"toc_number toc_depth_3\\\">3.2.1<\/span>\u00a0\u624b\u52a8\u7ba1\u7406\u8282\u70b9<\/li>\n<\/ul>\n<\/li>\n<li><span class=\\\"toc_number toc_depth_2\\\">3.3<\/span>\u00a0Node\u5bb9\u91cf<\/li>\n<\/ul>\n<\/li>\n<li><span class=\\\"toc_number toc_depth_1\\\">4<\/span>\u00a0API \u5bf9\u8c61<\/li>\n<\/ul>\n<\/div>\n<h2 id=\\\"what-is-a-node\\\"><span id=\\\"Node\\\">Node\u662f\u4ec0\u4e48\uff1f<\/span><\/h2>\n<p>Node\u662fKubernetes\u4e2d\u7684\u5de5\u4f5c\u8282\u70b9\uff0c\u6700\u5f00\u59cb\u88ab\u79f0\u4e3aminion\u3002\u4e00\u4e2aNode\u53ef\u4ee5\u662fVM\u6216\u7269\u7406\u673a\u3002\u6bcf\u4e2aNode\uff08\u8282\u70b9\uff09\u5177\u6709\u8fd0\u884cpod\u7684\u4e00\u4e9b\u5fc5\u8981\u670d\u52a1\uff0c\u5e76\u7531Master\u7ec4\u4ef6\u8fdb\u884c\u7ba1\u7406\uff0cNode\u8282\u70b9\u4e0a\u7684\u670d\u52a1\u5305\u62ecDocker\u3001kubelet\u548ckube-proxy\u3002<\/p>\n<h2><span id=\\\"Node_Status\\\">Node Status<\/span><\/h2>\n<p>\u8282\u70b9\u7684\u72b6\u6001\u4fe1\u606f\u5305\u542b\uff1a<\/p>\n<ul>\n<li>Addresses<\/li>\n<li><del>Phase<\/del>\u00a0(\u5df2\u5f03\u7528)<\/li>\n<li>Condition<\/li>\n<li>Capacity<\/li>\n<li>Info<\/li>\n<\/ul>\n<p>\u4e0b\u9762\u8be6\u7ec6\u63cf\u8ff0\u6bcf\u4e2a\u90e8\u5206\u3002<\/p>\n<h3 id=\\\"addresses\\\"><span id=\\\"Addresses\\\">Addresses<\/span><\/h3>\n<p>\u8fd9\u4e9b\u5b57\u6bb5\u7684\u4f7f\u7528\u53d6\u51b3\u4e8e\u4e91\u63d0\u4f9b\u5546\u6216\u88f8\u673a\u914d\u7f6e\u3002<\/p>\n<ul>\n<li>HostName\uff1a\u53ef\u4ee5\u901a\u8fc7kubelet \u4e2d &#8211;hostname-override\u53c2\u6570\u8986\u76d6\u3002<\/li>\n<li>ExternalIP\uff1a\u53ef\u4ee5\u88ab\u96c6\u7fa4\u5916\u90e8\u8def\u7531\u5230\u7684IP\u3002<\/li>\n<li>InternalIP\uff1a\u53ea\u80fd\u5728\u96c6\u7fa4\u5185\u8fdb\u884c\u8def\u7531\u7684\u8282\u70b9\u7684IP\u5730\u5740\u3002<\/li>\n<\/ul>\n<h3 id=\\\"phase\\\"><span id=\\\"Phase\\\">Phase<\/span><\/h3>\n<p>\u4e0d\u63a8\u8350\u4f7f\u7528\uff0c\u5df2\u5f03\u7528\u3002<\/p>\n<h3 id=\\\"condition\\\"><span id=\\\"Condition\\\">Condition<\/span><\/h3>\n<p>conditions\u5b57\u6bb5\u63cf\u8ff0\u6240\u6709Running\u8282\u70b9\u7684\u72b6\u6001\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>Node Condition<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>OutOfDisk<\/td>\n<td>True\uff1a\u5982\u679c\u8282\u70b9\u4e0a\u6ca1\u6709\u8db3\u591f\u7684\u53ef\u7528\u7a7a\u95f4\u6765\u6dfb\u52a0\u65b0\u7684pod\uff1b\u5426\u5219\u4e3a\uff1aFalse<\/td>\n<\/tr>\n<tr>\n<td>Ready<\/td>\n<td>True\uff1a\u5982\u679c\u8282\u70b9\u662f\u5065\u5eb7\u7684\u5e76\u51c6\u5907\u597d\u63a5\u6536pod\uff1bFalse\uff1a\u5982\u679c\u8282\u70b9\u4e0d\u5065\u5eb7\u5e76\u4e14\u4e0d\u63a5\u53d7pod\uff1bUnknown\uff1a\u5982\u679c\u8282\u70b9\u63a7\u5236\u5668\u5728\u8fc7\u53bb40\u79d2\u5185\u6ca1\u6709\u6536\u5230node\u7684\u72b6\u6001\u62a5\u544a\u3002<\/td>\n<\/tr>\n<tr>\n<td>MemoryPressure<\/td>\n<td>True\uff1a\u5982\u679c\u8282\u70b9\u5b58\u50a8\u5668\u4e0a\u5185\u5b58\u8fc7\u4f4e;\u00a0\u5426\u5219\u4e3a\uff1aFalse\u3002<\/td>\n<\/tr>\n<tr>\n<td>DiskPressure<\/td>\n<td>True\uff1a\u5982\u679c\u78c1\u76d8\u5bb9\u91cf\u5b58\u5728\u538b\u529b &#8211; \u4e5f\u5c31\u662f\u8bf4\u78c1\u76d8\u5bb9\u91cf\u4f4e\uff1b\u5426\u5219\u4e3a\uff1aFalse\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>node condition\u88ab\u8868\u793a\u4e3a\u4e00\u4e2aJSON\u5bf9\u8c61\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u54cd\u5e94\u63cf\u8ff0\u4e86\u4e00\u4e2a\u5065\u5eb7\u7684\u8282\u70b9\u3002<\/p>\n<div>\n<pre>\\\"conditions\\\": [\n  {\n    \\\"kind\\\": \\\"Ready\\\",\n    \\\"status\\\": \\\"True\\\"\n  }\n]<\/pre>\n<\/div>\n<p>\u5982\u679cReady condition\u7684Status\u662f\u201cUnknown\u201d \u6216 \u201cFalse\u201d\uff0c\u6bd4\u201cpod-eviction-timeout\u201d\u7684\u65f6\u95f4\u957f\uff0c\u5219\u4f20\u9012\u7ed9\u201c\u00a0kube-controller-manager\u201d\u7684\u53c2\u6570\uff0c\u8be5\u8282\u70b9\u4e0a\u7684\u6240\u6709Pod\u90fd\u5c06\u88ab\u8282\u70b9\u63a7\u5236\u5668\u5220\u9664\u3002\u9ed8\u8ba4\u7684eviction timeout\u65f6\u95f4\u4e3a5\u5206\u949f\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5f53\u8282\u70b9\u65e0\u6cd5\u8bbf\u95ee\u65f6\uff0capiserver\u5c06\u65e0\u6cd5\u4e0ekubelet\u901a\u4fe1\uff0c\u5220\u9664Pod\u7684\u9700\u6c42\u4e0d\u4f1a\u4f20\u9012\u5230kubelet\uff0c\u76f4\u5230\u91cd\u65b0\u4e0eapiserver\u5efa\u7acb\u901a\u4fe1\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8ba1\u5212\u5220\u9664\u7684Pod\u4f1a\u7ee7\u7eed\u5728\u5212\u5206\u7684\u8282\u70b9\u4e0a\u8fd0\u884c\u3002<br \/>\n\u5728Kubernetes 1.5\u4e4b\u524d\u7684\u7248\u672c\u4e2d\uff0c\u8282\u70b9\u63a7\u5236\u5668\u5c06\u5f3a\u5236\u4eceapiserver\u4e2d\u5220\u9664\u8fd9\u4e9b\u4e0d\u53ef\u8fbe\uff08\u4e0a\u8ff0\u60c5\u51b5\uff09\u7684pod\u3002\u4f46\u662f\uff0c\u57281.5\u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\uff0c\u8282\u70b9\u63a7\u5236\u5668\u5728\u786e\u8ba4\u5b83\u4eec\u5df2\u7ecf\u505c\u6b62\u5728\u96c6\u7fa4\u4e2d\u8fd0\u884c\u4e4b\u524d\uff0c\u4e0d\u4f1a\u5f3a\u5236\u5220\u9664Pod\u3002\u53ef\u4ee5\u770b\u5230\u8fd9\u4e9b\u53ef\u80fd\u5728\u4e0d\u53ef\u8fbe\u8282\u70b9\u4e0a\u8fd0\u884c\u7684pod\u5904\u4e8e\\&#8221;Terminating\\&#8221;\u6216 \u201cUnknown\u201d\u3002\u5982\u679c\u8282\u70b9\u6c38\u4e45\u9000\u51fa\u96c6\u7fa4\uff0cKubernetes\u662f\u65e0\u6cd5\u4ece\u5e95\u5c42\u57fa\u7840\u67b6\u6784\u8fa8\u522b\u51fa\u6765\uff0c\u5219\u96c6\u7fa4\u7ba1\u7406\u5458\u9700\u8981\u624b\u52a8\u5220\u9664\u8282\u70b9\u5bf9\u8c61\uff0c\u4eceKubernetes\u5220\u9664\u8282\u70b9\u5bf9\u8c61\u4f1a\u5bfc\u81f4\u8fd0\u884c\u5728\u4e0a\u9762\u7684\u6240\u6709Pod\u5bf9\u8c61\u4eceapiserver\u4e2d\u5220\u9664\uff0c\u6700\u7ec8\u5c06\u4f1a\u91ca\u653enames\u3002<\/p>\n<h3 id=\\\"capacity\\\"><span id=\\\"Capacity\\\">Capacity<\/span><\/h3>\n<p>\u63cf\u8ff0\u8282\u70b9\u4e0a\u53ef\u7528\u7684\u8d44\u6e90\uff1aCPU\u3001\u5185\u5b58\u548c\u53ef\u4ee5\u8c03\u5ea6\u5230\u8282\u70b9\u4e0a\u7684\u6700\u5927pod\u6570\u3002<\/p>\n<h3 id=\\\"info\\\"><span id=\\\"Info\\\">Info<\/span><\/h3>\n<p>\u5173\u4e8e\u8282\u70b9\u7684\u4e00\u4e9b\u57fa\u7840\u4fe1\u606f\uff0c\u5982\u5185\u6838\u7248\u672c\u3001Kubernetes\u7248\u672c\uff08kubelet\u548ckube-proxy\u7248\u672c\uff09\u3001Docker\u7248\u672c\uff08\u5982\u679c\u6709\u4f7f\u7528\uff09\u3001OS\u540d\u79f0\u7b49\u3002\u4fe1\u606f\u7531Kubelet\u4ece\u8282\u70b9\u6536\u96c6\u3002<\/p>\n<h2 id=\\\"management\\\"><span id=\\\"Management\\\">Management<\/span><\/h2>\n<p>\u4e0e\u00a0pods\u00a0\u548c\u00a0services\u00a0\u4e0d\u540c\uff0c\u8282\u70b9\u4e0d\u662f\u7531Kubernetes \u7cfb\u7edf\u521b\u5efa\uff0c\u5b83\u662f\u7531Google Compute Engine\u7b49\u4e91\u63d0\u4f9b\u5546\u5728\u5916\u90e8\u521b\u5efa\u7684\uff0c\u6216\u4f7f\u7528\u7269\u7406\u548c\u865a\u62df\u673a\u3002\u8fd9\u610f\u5473\u7740\u5f53Kubernetes\u521b\u5efa\u4e00\u4e2a\u8282\u70b9\u65f6\uff0c\u5b83\u53ea\u662f\u521b\u5efa\u4e00\u4e2a\u4ee3\u8868\u8282\u70b9\u7684\u5bf9\u8c61\uff0c\u521b\u5efa\u540e\uff0cKubernetes\u5c06\u68c0\u67e5\u8282\u70b9\u662f\u5426\u6709\u6548\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f7f\u7528\u4ee5\u4e0b\u5185\u5bb9\u521b\u5efa\u4e00\u4e2a\u8282\u70b9\uff1a<\/p>\n<div>\n<pre>{\n  \\\"kind\\\": \\\"Node\\\",\n  \\\"apiVersion\\\": \\\"v1\\\",\n  \\\"metadata\\\": {\n    \\\"name\\\": \\\"10.240.79.157\\\",\n    \\\"labels\\\": {\n      \\\"name\\\": \\\"my-first-k8s-node\\\"\n    }\n  }\n}\n<\/pre>\n<\/div>\n<p>Kubernetes\u5c06\u5728\u5185\u90e8\u521b\u5efa\u4e00\u4e2a\u8282\u70b9\u5bf9\u8c61\uff0c\u5e76\u901a\u8fc7\u57fa\u4e8emetadata.name\u5b57\u6bb5\u7684\u5065\u5eb7\u68c0\u67e5\u6765\u9a8c\u8bc1\u8282\u70b9\uff0c\u5982\u679c\u8282\u70b9\u6709\u6548\uff0c\u5373\u6240\u6709\u5fc5\u9700\u7684\u670d\u52a1\u4f1a\u540c\u6b65\u8fd0\u884c\uff0c\u5219\u624d\u80fd\u5728\u4e0a\u9762\u8fd0\u884cpod\u3002\u8bf7\u6ce8\u610f\uff0cKubernetes\u5c06\u4fdd\u7559\u65e0\u6548\u8282\u70b9\u7684\u5bf9\u8c61\uff08\u9664\u975e\u5ba2\u6237\u7aef\u6709\u660e\u786e\u5220\u9664\u5b83\uff09\u5e76\u4e14\u5b83\u5c06\u7ee7\u7eed\u68c0\u67e5\u5b83\u662f\u5426\u53d8\u4e3a\u6709\u6548\u3002<br \/>\n\u76ee\u524d\uff0c\u6709\u4e09\u4e2a\u7ec4\u4ef6\u4e0eKubernetes\u8282\u70b9\u63a5\u53e3\u8fdb\u884c\u4ea4\u4e92\uff1a\u8282\u70b9\u63a7\u5236\u5668\uff08node controller\uff09\u3001kubelet\u548ckubectl\u3002<\/p>\n<h3 id=\\\"node-controller\\\"><span id=\\\"Node_Controller\\\">Node Controller<\/span><\/h3>\n<p>\u8282\u70b9\u63a7\u5236\u5668\uff08Node Controller\uff09\u662f\u7ba1\u7406\u8282\u70b9\u7684Kubernetes master\u7ec4\u4ef6\u3002<br \/>\n\u8282\u70b9\u63a7\u5236\u5668\u5728\u8282\u70b9\u7684\u751f\u547d\u5468\u671f\u4e2d\u5177\u6709\u591a\u4e2a\u89d2\u8272\u3002\u7b2c\u4e00\u4e2a\u662f\u5728\u6ce8\u518c\u65f6\u5c06CIDR\u5757\u5206\u914d\u7ed9\u8282\u70b9\u3002<br \/>\n\u7b2c\u4e8c\u4e2a\u662f\u4f7f\u8282\u70b9\u63a7\u5236\u5668\u7684\u5185\u90e8\u5217\u8868\u4e0e\u4e91\u63d0\u4f9b\u5546\u7684\u53ef\u7528\u673a\u5668\u5217\u8868\u4fdd\u6301\u6700\u65b0\u3002\u5f53\u5728\u4e91\u73af\u5883\u4e2d\u8fd0\u884c\u65f6\uff0c\u6bcf\u5f53\u8282\u70b9\u4e0d\u5065\u5eb7\u65f6\uff0c\u8282\u70b9\u63a7\u5236\u5668\u5c06\u8be2\u95ee\u4e91\u63d0\u4f9b\u7a0b\u5e8f\u662f\u5426\u8be5\u8282\u70b9\u7684VM\u4ecd\u7136\u53ef\u7528\uff0c\u5982\u679c\u4e0d\u53ef\u7528\uff0c\u8282\u70b9\u63a7\u5236\u5668\u4f1a\u4ece\u5176\u8282\u70b9\u5217\u8868\u4e2d\u5220\u9664\u8be5\u8282\u70b9\u3002<br \/>\n\u7b2c\u4e09\u662f\u76d1\u6d4b\u8282\u70b9\u7684\u5065\u5eb7\u72b6\u51b5\u3002\u5f53\u8282\u70b9\u53d8\u4e3a\u4e0d\u53ef\u8bbf\u95ee\u65f6\uff0c\u8282\u70b9\u63a7\u5236\u5668\u8d1f\u8d23\u5c06NodeStatus\u7684NodeReady\u6761\u4ef6\u66f4\u65b0\u4e3aConditionUnknown\uff0c\u968f\u540e\u4ece\u8282\u70b9\u4e2d\u5378\u8f7d\u6240\u6709pod \uff0c\u5982\u679c\u8282\u70b9\u7ee7\u7eed\u65e0\u6cd5\u8bbf\u95ee\uff0c\uff08\u9ed8\u8ba4\u8d85\u65f6\u65f6\u95f4\u4e3a40\u00a0&#8211;node-monitor-period\u79d2\uff0c\u5f00\u59cb\u62a5\u544aConditionUnknown\uff0c\u4e4b\u540e\u4e3a5m\u5f00\u59cb\u5378\u8f7d\uff09\u3002\u8282\u70b9\u63a7\u5236\u5668\u6309\u6bcf\u79d2\u6765\u68c0\u67e5\u6bcf\u4e2a\u8282\u70b9\u7684\u72b6\u6001\u3002<br \/>\n\u5728Kubernetes 1.4\u4e2d\uff0c\u6211\u4eec\u66f4\u65b0\u4e86\u8282\u70b9\u63a7\u5236\u5668\u7684\u903b\u8f91\uff0c\u4ee5\u66f4\u597d\u5730\u5904\u7406\u5927\u91cf\u8282\u70b9\u5230\u8fbe\u4e3b\u8282\u70b9\u7684\u4e00\u4e9b\u95ee\u9898\uff08\u4f8b\u5982\uff0c\u4e3b\u8282\u67d0\u4e9b\u7f51\u7edc\u95ee\u9898\uff09\u3002\u4ece1.4\u5f00\u59cb\uff0c\u8282\u70b9\u63a7\u5236\u5668\u5c06\u5728\u51b3\u5b9a\u5173\u4e8epod\u5378\u8f7d\u7684\u8fc7\u7a0b\u4e2d\u4f1a\u67e5\u770b\u96c6\u7fa4\u4e2d\u6240\u6709\u8282\u70b9\u7684\u72b6\u6001\u3002<br \/>\n\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u8282\u70b9\u63a7\u5236\u5668\u5c06\u9010\u51fa\u901f\u7387\u9650\u5236\u4e3a\u00a0&#8211;node-eviction-rate\uff08\u9ed8\u8ba4\u4e3a0.1\uff09\/\u79d2\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4e0d\u4f1a\u6bcf10\u79d2\u4ece\u591a\u4e8e1\u4e2a\u8282\u70b9\u9a71\u9010Pod\u3002<br \/>\n\u5f53\u7ed9\u5b9a\u53ef\u7528\u6027\u7684\u533a\u57df\u4e2d\u7684\u8282\u70b9\u53d8\u5f97\u4e0d\u5065\u5eb7\u65f6\uff0c\u8282\u70b9\u9010\u51fa\u884c\u4e3a\u53d1\u751f\u53d8\u5316\uff0c\u8282\u70b9\u63a7\u5236\u5668\u540c\u65f6\u68c0\u67e5\u533a\u57df\u4e2d\u8282\u70b9\u7684\u4e0d\u5065\u5eb7\u767e\u5206\u6bd4\uff08NodeReady\u6761\u4ef6\u4e3aConditionUnknown\u6216ConditionFalse\uff09\u3002\u5982\u679c\u4e0d\u5065\u5eb7\u8282\u70b9\u7684\u6bd4\u4f8b\u4e3a\u00a0&#8211;unhealthy-zone-threshold\uff08\u9ed8\u8ba4\u4e3a0.55\uff09\uff0c\u90a3\u4e48\u9a71\u9010\u901f\u5ea6\u5c31\u4f1a\u964d\u4f4e\uff1a\u5982\u679c\u96c6\u7fa4\u5f88\u5c0f\uff08\u5373\u5c0f\u4e8e\u6216\u7b49\u4e8e&#8211;large-cluster-size-threshold\u8282\u70b9 &#8211; \u9ed8\u8ba4\u503c\u4e3a50\uff09\uff0c\u5219\u505c\u6b62\u9a71\u9010\uff0c\u5426\u5219\uff0c\u00a0&#8211;secondary-node-eviction-rate\uff08\u9ed8\u8ba4\u4e3a0.01\uff09\u6bcf\u79d2\u3002\u8fd9\u4e9b\u7b56\u7565\u5728\u53ef\u7528\u6027\u533a\u57df\u5185\u5b9e\u73b0\u7684\u539f\u56e0\u662f\uff0c\u4e00\u4e2a\u53ef\u7528\u6027\u533a\u57df\u53ef\u80fd\u4f1a\u4ece\u4e3b\u5206\u533a\u4e2d\u88ab\u5206\u533a\uff0c\u800c\u5176\u4ed6\u53ef\u7528\u533a\u57df\u5219\u4fdd\u6301\u8fde\u63a5\u3002\u5982\u679c\u96c6\u7fa4\u6ca1\u6709\u8de8\u591a\u4e2a\u4e91\u63d0\u4f9b\u5546\u53ef\u7528\u6027\u533a\u57df\uff0c\u90a3\u4e48\u53ea\u6709\u4e00\u4e2a\u53ef\u7528\u533a\u57df(\u6574\u4e2a\u96c6\u7fa4)\u3002<br \/>\n\u5728\u53ef\u7528\u533a\u57df\u4e4b\u95f4\u4f20\u64ad\u8282\u70b9\u7684\u4e00\u4e2a\u4e3b\u8981\u539f\u56e0\u662f\uff0c\u5f53\u6574\u4e2a\u533a\u57df\u505c\u6b62\u65f6\uff0c\u5de5\u4f5c\u8d1f\u8f7d\u53ef\u4ee5\u8f6c\u79fb\u5230\u5065\u5eb7\u533a\u57df\u3002\u56e0\u6b64\uff0c\u5982\u679c\u533a\u57df\u4e2d\u7684\u6240\u6709\u8282\u70b9\u90fd\u4e0d\u5065\u5eb7\uff0c\u5219\u8282\u70b9\u63a7\u5236\u5668\u4ee5\u6b63\u5e38\u901f\u7387\u9010\u51fa&#8211;node-eviction-rate\u3002\u5982\u6240\u6709\u7684\u533a\u57df\u90fd\u662f\u5b8c\u5168\u4e0d\u5065\u5eb7\u7684\uff08\u5373\u7fa4\u96c6\u4e2d\u6ca1\u6709\u5065\u5eb7\u7684\u8282\u70b9\uff09\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8282\u70b9\u63a7\u5236\u5668\u4f1a\u5047\u8bbe\u4e3b\u8fde\u63a5\u6709\u4e00\u4e9b\u95ee\u9898\uff0c\u5e76\u505c\u6b62\u6240\u6709\u9a71\u9010\uff0c\u76f4\u5230\u67d0\u4e9b\u8fde\u63a5\u6062\u590d\u3002<br \/>\n\u4eceKubernetes 1.6\u5f00\u59cb\uff0c\u8282\u70b9\u63a7\u5236\u5668\u8fd8\u8d1f\u8d23\u9a71\u9010\u5728\u8282\u70b9\u4e0a\u8fd0\u884c\u7684NoExecutepod\u3002<\/p>\n<h3 id=\\\"self-registration-of-nodes\\\"><span id=\\\"Self-Registration_of_Nodes\\\">Self-Registration of Nodes<\/span><\/h3>\n<p>\u5f53kubelet flag\u00a0&#8211;register-node\u4e3atrue\uff08\u9ed8\u8ba4\u503c\uff09\u65f6\uff0ckubelet\u5c06\u5411API\u670d\u52a1\u5668\u6ce8\u518c\u81ea\u8eab\u3002\u8fd9\u662f\u5927\u591a\u6570\u53d1\u884c\u7248\u4f7f\u7528\u7684\u9996\u9009\u6a21\u5f0f\u3002<br \/>\n\u5bf9\u4e8eself-registration\uff0ckubelet\u4ece\u4ee5\u4e0b\u9009\u9879\u5f00\u59cb\uff1a<\/p>\n<ul>\n<li><code class=\\\"highlighter-rouge\\\">--api-servers<\/code>\u00a0&#8211; Location of the apiservers.<\/li>\n<li><code class=\\\"highlighter-rouge\\\">--kubeconfig<\/code>\u00a0&#8211; Path to credentials to authenticate itself to the apiserver.<\/li>\n<li><code class=\\\"highlighter-rouge\\\">--cloud-provider<\/code>\u00a0&#8211; How to talk to a cloud provider to read metadata about itself.<\/li>\n<li><code class=\\\"highlighter-rouge\\\">--register-node<\/code>\u00a0&#8211; Automatically register with the API server.<\/li>\n<li><code class=\\\"highlighter-rouge\\\">--register-with-taints<\/code>\u00a0&#8211; Register the node with the given list of taints (comma separated\u00a0<code class=\\\"highlighter-rouge\\\">&lt;key&gt;=&lt;value&gt;:&lt;effect&gt;<\/code>). No-op if\u00a0<code class=\\\"highlighter-rouge\\\">register-node<\/code>\u00a0is false.<\/li>\n<li><code class=\\\"highlighter-rouge\\\">--node-ip<\/code>\u00a0IP address of the node.<\/li>\n<li><code class=\\\"highlighter-rouge\\\">--node-labels<\/code>\u00a0&#8211; Labels to add when registering the node in the cluster.<\/li>\n<li><code class=\\\"highlighter-rouge\\\">--node-status-update-frequency<\/code>\u00a0&#8211; Specifies how often kubelet posts node status to master.<\/li>\n<\/ul>\n<h4><span id=\\\"i\\\">\u624b\u52a8\u7ba1\u7406\u8282\u70b9<\/span><\/h4>\n<p>\u96c6\u7fa4\u7ba1\u7406\u5458\u53ef\u4ee5\u521b\u5efa\u548c\u4fee\u6539\u8282\u70b9\u5bf9\u8c61\u3002<br \/>\n\u5982\u679c\u7ba1\u7406\u5458\u5e0c\u671b\u624b\u52a8\u521b\u5efa\u8282\u70b9\u5bf9\u8c61\uff0c\u8bf7\u8bbe\u7f6ekubelet flag\u00a0\u00a0&#8211;register-node=false\u3002<br \/>\n\u7ba1\u7406\u5458\u53ef\u4ee5\u4fee\u6539\u8282\u70b9\u8d44\u6e90\uff08\u4e0d\u7ba1&#8211;register-node\u8bbe\u7f6e\u5982\u4f55\uff09\uff0c\u4fee\u6539\u5305\u62ec\u5728\u8282\u70b9\u4e0a\u8bbe\u7f6e\u7684labels\u00a0\u6807\u7b7e\uff0c\u5e76\u5c06\u5176\u6807\u8bb0\u4e3a\u4e0d\u53ef\u8c03\u5ea6\u7684\u3002<br \/>\n\u8282\u70b9\u4e0a\u7684\u6807\u7b7e\u53ef\u4ee5\u4e0epod\u4e0a\u7684\u8282\u70b9\u9009\u62e9\u5668\u4e00\u8d77\u4f7f\u7528\uff0c\u4ee5\u63a7\u5236\u8c03\u5ea6\uff0c\u4f8b\u5982\u5c06\u4e00\u4e2apod\u9650\u5236\u4e3a\u53ea\u80fd\u5728\u8282\u70b9\u7684\u5b50\u96c6\u4e0a\u8fd0\u884c\u3002<br \/>\n\u5c06\u8282\u70b9\u6807\u8bb0\u4e3a\u4e0d\u53ef\u8c03\u5ea6\u5c06\u9632\u6b62\u65b0\u7684pod\u88ab\u8c03\u5ea6\u5230\u8be5\u8282\u70b9\uff0c\u4f46\u4e0d\u4f1a\u5f71\u54cd\u8282\u70b9\u4e0a\u7684\u4efb\u4f55\u73b0\u6709\u7684pod\uff0c\u8fd9\u5728\u8282\u70b9\u91cd\u65b0\u542f\u52a8\u4e4b\u524d\u662f\u6709\u7528\u7684\u3002\u4f8b\u5982\uff0c\u8981\u6807\u8bb0\u8282\u70b9\u4e0d\u53ef\u8c03\u5ea6\uff0c\u8bf7\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<div>\n<pre>kubectl cordon $NODENAME<\/pre>\n<\/div>\n<p><strong>\u6ce8\u610f<\/strong>\uff0c\u7531daemonSet\u63a7\u5236\u5668\u521b\u5efa\u7684pod\u53ef\u4ee5\u7ed5\u8fc7Kubernetes\u8c03\u5ea6\u7a0b\u5e8f\uff0c\u5e76\u4e14\u4e0d\u9075\u5faa\u8282\u70b9\u4e0a\u65e0\u6cd5\u8c03\u5ea6\u7684\u5c5e\u6027\u3002<\/p>\n<h3><span id=\\\"Node-2\\\">Node\u5bb9\u91cf<\/span><\/h3>\n<p>\u8282\u70b9\u7684\u5bb9\u91cf(cpu\u6570\u91cf\u548c\u5185\u5b58\u6570\u91cf)\u662f\u8282\u70b9\u5bf9\u8c61\u7684\u4e00\u90e8\u5206\u3002\u901a\u5e38\uff0c\u8282\u70b9\u5728\u521b\u5efa\u8282\u70b9\u5bf9\u8c61\u65f6\u6ce8\u518c\u5e76\u901a\u77e5\u5176\u5bb9\u91cf\u3002\u5982\u679c\u662f\u624b\u52a8\u7ba1\u7406\u8282\u70b9\uff0c\u5219\u9700\u8981\u5728\u6dfb\u52a0\u8282\u70b9\u65f6\u8bbe\u7f6e\u8282\u70b9\u5bb9\u91cf\u3002<br \/>\nKubernetes\u8c03\u5ea6\u7a0b\u5e8f\u53ef\u786e\u4fdd\u8282\u70b9\u4e0a\u7684\u6240\u6709pod\u90fd\u6709\u8db3\u591f\u7684\u8d44\u6e90\u3002\u5b83\u4f1a\u68c0\u67e5\u8282\u70b9\u4e0a\u5bb9\u5668\u7684\u8bf7\u6c42\u7684\u603b\u548c\u4e0d\u5927\u4e8e\u8282\u70b9\u5bb9\u91cf\u3002<br \/>\n\u5982\u679c\u8981\u660e\u786e\u4fdd\u7559\u975epod\u8fc7\u7a0b\u7684\u8d44\u6e90\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5360\u4f4d\u7b26pod\u3002\u4f7f\u7528\u4ee5\u4e0b\u6a21\u677f\uff1a<\/p>\n<div>\n<pre>apiVersion: v1\nkind: Pod\nmetadata:\n  name: resource-reserver\nspec:\n  containers:\n  - name: sleep-forever\n    image: gcr.io\/google_containers\/pause:0.8.0\n    resources:\n      requests:\n        cpu: 100m\n        memory: 100Mi<\/pre>\n<\/div>\n<p>\u5c06cpu\u548c\u5185\u5b58\u503c\u8bbe\u7f6e\u4e3a\u4f60\u60f3\u8981\u4fdd\u7559\u7684\u8d44\u6e90\u91cf\uff0c\u5c06\u6587\u4ef6\u653e\u7f6e\u5728manifest\u76ee\u5f55\u4e2d(<code class=\\\"highlighter-rouge\\\">--config=DIR<\/code>\u00a0flag of kubelet)\u3002\u5728\u8981\u9884\u7559\u8d44\u6e90\u7684\u6bcf\u4e2akubelet\u4e0a\u6267\u884c\u6b64\u64cd\u4f5c\u3002<\/p>\n<h2 id=\\\"api-object\\\"><span id=\\\"API\\\">API \u5bf9\u8c61<\/span><\/h2>\n<p>Node\u662fKubernetes REST API\u4e2d\u7684\u6700\u9ad8\u7ea7\u522b\u8d44\u6e90\u3002\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Kubernetes Nodes 1\u00a0Node\u662f\u4ec0\u4e48\uff1f 2\u00a0Node Status 2.1\u00a0Addresses &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=1570\"> <span class=\"screen-reader-text\">Kubernetes Nodes<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[104,123],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"Kubernetes Nodes 1\u00a0Node\u662f\u4ec0\u4e48\uff1f 2\u00a0Node Status 2.1\u00a0Addresses&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1570"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1570"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1570\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1570"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1570"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}