{"id":43837,"date":"2022-12-23T13:09:20","date_gmt":"2023-09-16T03:55:03","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/node-problem-detector%ef%bc%9a%e4%bd%bf%e7%94%a8%e4%bb%bb%e4%bd%95%e7%9b%91%e6%8e%a7%e8%84%9a%e6%9c%ac%e5%8f%af%e4%bb%a5%e6%9b%b4%e6%94%b9kubernetes%e8%8a%82%e7%82%b9%e7%9a%84%e6%9d%a1%e4%bb%b6\/"},"modified":"2024-04-29T06:39:24","modified_gmt":"2024-04-28T22:39:24","slug":"node-problem-detector%ef%bc%9a%e4%bd%bf%e7%94%a8%e4%bb%bb%e4%bd%95%e7%9b%91%e6%8e%a7%e8%84%9a%e6%9c%ac%e5%8f%af%e4%bb%a5%e6%9b%b4%e6%94%b9kubernetes%e8%8a%82%e7%82%b9%e7%9a%84%e6%9d%a1%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/node-problem-detector%ef%bc%9a%e4%bd%bf%e7%94%a8%e4%bb%bb%e4%bd%95%e7%9b%91%e6%8e%a7%e8%84%9a%e6%9c%ac%e5%8f%af%e4%bb%a5%e6%9b%b4%e6%94%b9kubernetes%e8%8a%82%e7%82%b9%e7%9a%84%e6%9d%a1%e4%bb%b6\/","title":{"rendered":"node-problem-detector\uff1a\u4f7f\u7528\u4efb\u4f55\u76d1\u63a7\u811a\u672c\u53ef\u4ee5\u66f4\u6539Kubernetes\u8282\u70b9\u7684\u6761\u4ef6"},"content":{"rendered":"<h2>\u9996\u5148<\/h2>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u4e00\u4e2a\u540d\u4e3anode-problem-detector\uff08NPD\uff09\u7684\u81ea\u5b9a\u4e49\u63d2\u4ef6\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u6267\u884c\u4efb\u610f\u811a\u672c\u6765\u4fee\u6539\u8282\u70b9\u7684\u6761\u4ef6\u6216\u521b\u5efa\u4e8b\u4ef6\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6b64\u5904\u4f7f\u7528\u7684NPD\u914d\u7f6e\u6587\u4ef6\u5df2\u5728v0.8.2\u8fdb\u884c\u9a8c\u8bc1\u3002<\/p>\n<h2>node-problem-detector \u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>node-problem-detector\u662f\u4e00\u4e2aDaemonSet\uff0c\u4f1a\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u8fd0\u884c\uff0c\u5e76\u5728\u53d1\u73b0\u8282\u70b9\u95ee\u9898\u65f6\uff0c\u4fee\u6539Kubernetes\u8282\u70b9\u7684\u6761\u4ef6\u6216\u521b\u5efa\u4e8b\u4ef6\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4f5c\u4e3a\u53d1\u73b0\u8282\u70b9\u95ee\u9898\u7684\u624b\u6bb5\u7684\u4e00\u4e9b\u63d2\u4ef6\u63d0\u4f9b\u7684\u9009\u9879\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b7\u30b9\u30c6\u30e0\u30ed\u30b0\u30e2\u30cb\u30bf: \u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u76e3\u8996\u3057\u3066\u554f\u984c\u3092\u767a\u898b\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>filelog \u30d7\u30e9\u30b0\u30a4\u30f3: \u4efb\u610f\u306e\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb<\/p>\n<p>journald \u30d7\u30e9\u30b0\u30a4\u30f3: journald \u306e\u30ed\u30b0<\/p>\n<p>kmsg \u30d7\u30e9\u30b0\u30a4\u30f3: \u30ab\u30fc\u30cd\u30eb\u30ed\u30b0(\/dev\/kmsg)<\/p>\n<p>\u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u30e2\u30cb\u30bf: \u4efb\u610f\u306e\u76e3\u8996\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u554f\u984c\u3092\u767a\u898b\u3059\u308b<\/p>\n<p>custom \u30d7\u30e9\u30b0\u30a4\u30f3: \u4efb\u610f\u306e\u76e3\u8996\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u6a19\u6e96\u51fa\u529b\u3068\u7d42\u4e86\u30b3\u30fc\u30c9\u3067\u554f\u984c\u3092\u901a\u77e5\u3059\u308b<\/p>\n<p>[Kubernetes] node-problem-detector \u53ef\u7528\u4e8e\u76d1\u89c6\u8282\u70b9\uff0c\u5e76\u901a\u8fc7\u7cfb\u7edf\u65e5\u5fd7\u76d1\u89c6\u5668\u8fdb\u884c\u89e3\u91ca\uff0c\u53ef\u4ee5\u53c2\u8003 AI tech studio\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u652f\u6301\u8f93\u51fa\u6307\u6807\u6570\u636e\u3002<\/p>\n<ul class=\"post-ul\">\u30b7\u30b9\u30c6\u30e0\u7d71\u8a08\u30e2\u30cb\u30bf: CPU \u3084\u30c7\u30a3\u30b9\u30af\u3001\u30e1\u30e2\u30ea\u3068\u3044\u3063\u305f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u7d71\u8a08\u60c5\u5831\u3092\u51fa\u529b\u3059\u308b<\/ul>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u5173\u4e8e\u81ea\u5b9a\u4e49\u63d2\u4ef6\u76d1\u89c6\u5668\u7684\u81ea\u5b9a\u4e49\u63d2\u4ef6\u7684\u5185\u5bb9\u3002<\/p>\n<h2>\u901a\u8fc7\u81ea\u5b9a\u4e49\u63d2\u4ef6\u53ef\u4ee5\u5b9e\u73b0\u7684\u529f\u80fd\u3002<\/h2>\n<p>\u5b9a\u5236\u63d2\u4ef6\u76d1\u89c6\u5668\u80fd\u591f\u6267\u884c\u4efb\u610f\u76d1\u89c6\u811a\u672c\uff0c\u5e76\u901a\u8fc7\u76d1\u89c6\u811a\u672c\u7684\u9000\u51fa\u4ee3\u7801\u548c\u6807\u51c6\u8f93\u51fa\u6765\u5224\u65ad\u662f\u5426\u53d1\u73b0\u4e86\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u57fa\u672c\u4e0a\u53ef\u4ee5\u5b9e\u73b0\u4efb\u4f55\u529f\u80fd\uff0c\u4f46\u76d1\u89c6\u811a\u672c\u662f\u5728NPD\u5bb9\u5668\u4e2d\u8fd0\u884c\u7684\uff0c\u56e0\u6b64NPD\u5bb9\u5668\u955c\u50cf\u5fc5\u987b\u5305\u542b\u6240\u9700\u7684\u8fd0\u884c\u5185\u5bb9\u3002\u56e0\u6b64\uff0c\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u4f1a\u4f7f\u7528Shell\u811a\u672c\u6765\u5b9e\u73b0\uff0c\u4f46Go\u8bed\u8a00\u4e5f\u53ef\u80fd\u5f88\u9002\u5408\u3002\u5982\u679c\u60f3\u4f7f\u7528Python\u7b49\u5b9e\u73b0\uff0c\u5c31\u9700\u8981\u81ea\u5df1\u6784\u5efa\u5305\u542bPython\u7684\u955c\u50cf\uff0c\u57fa\u4e8eNPD\u955c\u50cf\u4f5c\u4e3a\u57fa\u7840\u955c\u50cf\u8fdb\u884c\u6784\u5efa\u3002<\/p>\n<h2>\u81ea\u5b9a\u4e49\u63d2\u4ef6\u7684\u914d\u7f6e<\/h2>\n<p>\u81ea\u5b9a\u4e49\u63d2\u4ef6\u7684\u914d\u7f6e\u4ee5 JSON \u683c\u5f0f\u7684\u6587\u4ef6\u63cf\u8ff0\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"nl\">\"plugin\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"custom\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nl\">\"pluginConfig\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nl\">\"invoke_interval\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"30s\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"timeout\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"5s\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"max_output_length\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">80<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"concurrency\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">3<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"enable_message_change_based_condition_update\"<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span>\r\n  <span class=\"p\">},<\/span>\r\n  <span class=\"nl\">\"source\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"upfile-monitor\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nl\">\"metricsReporting\"<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nl\">\"conditions\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"p\">{<\/span>\r\n      <span class=\"nl\">\"type\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"UpFile\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"reason\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"UpFileExists\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"message\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"up file exists\"<\/span>\r\n    <span class=\"p\">}<\/span>\r\n  <span class=\"p\">],<\/span>\r\n  <span class=\"nl\">\"rules\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"p\">{<\/span>\r\n      <span class=\"nl\">\"type\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"temporary\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"reason\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"UPFileDoesNotExist\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"path\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"\/custom-config\/plugin\/check_up_file.sh\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"timeout\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"3s\"<\/span>\r\n    <span class=\"p\">},<\/span>\r\n    <span class=\"p\">{<\/span>\r\n      <span class=\"nl\">\"type\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"permanent\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"condition\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"UpFile\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"reason\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"UpFileDoesNotExist\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"path\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"\/custom-config\/plugin\/check_up_file.sh\"<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"nl\">\"timeout\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"3s\"<\/span>\r\n    <span class=\"p\">}<\/span>\r\n  <span class=\"p\">]<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u63d2\u4ef6\u662f\u7528\u6765\u63cf\u8ff0\u63d2\u4ef6\u7c7b\u578b\u7684\u3002\u5982\u679c\u662f\u81ea\u5b9a\u4e49\u63d2\u4ef6\uff0c\u5219\u4e3acustom\u3002<\/p>\n<p>pluginConfig\u662f\u63d2\u4ef6\u7684\u914d\u7f6e\u3002\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7c7b\u578b\u7684\u63d2\u4ef6\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n<p>invoke_interval: \u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u9593\u9694\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f 30s\u3002<\/p>\n<p>timeout: \u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u547c\u3073\u51fa\u3057\u304c\u7d42\u4e86\u3057\u3066\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3068\u898b\u306a\u3055\u308c\u308b\u307e\u3067\u306e\u6642\u9593\u3002\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3059\u308b\u3068\u30b9\u30c6\u30fc\u30bf\u30b9 Unknown \u306e\u6271\u3044\u3068\u306a\u308b\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f 5s\u3002<\/p>\n<p>max_output_length: \u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u6a19\u6e96\u51fa\u529b\u304b\u3089\u306e\u51fa\u529b\u3092\u30ab\u30c3\u30c8\u3059\u308b\u30b5\u30a4\u30ba\u3002\u30ab\u30c3\u30c8\u5f8c\u306e\u51fa\u529b\u304c\u30b3\u30f3\u30c7\u30a3\u30b7\u30e7\u30f3\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u3057\u3066\u4f7f\u308f\u308c\u308b\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f 8\u3002<\/p>\n<p>concurrency: \u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u30ef\u30fc\u30ab\u6570\u30021\u3064\u306e\u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u306a\u304b\u3067\u8907\u6570\u306e\u30eb\u30fc\u30eb\u304c\u3042\u308b\u5834\u5408\u306b\u305d\u308c\u3089\u306e\u540c\u6642\u547c\u3073\u51fa\u3057\u6570\u306b\u5f53\u305f\u308b\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f 3\u3002<\/p>\n<p>enable_message_change_based_condition_update: \u30e1\u30c3\u30bb\u30fc\u30b8\uff08\u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u6a19\u6e96\u51fa\u529b\u304b\u3089\u306e\u51fa\u529b\uff09\u306e\u5909\u66f4\u306b\u3088\u308a\u30b3\u30f3\u30c7\u30a3\u30b7\u30e7\u30f3\u3092\u66f4\u65b0\u3059\u308b\u304b\u3069\u3046\u304b\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f false\u3002<\/p>\n<p>\u6e90\u5934\u5728\u4e8b\u4ef6\u521b\u5efa\u65f6\u4f5c\u4e3a\u62a5\u544a\u6765\u6e90\u7ec4\u4ef6\u4f7f\u7528\u3002\u5177\u4f53\u800c\u8a00\uff0c\u5b83\u4f5c\u4e3a\u4e8b\u4ef6\u5bf9\u8c61\u7684`.source.component`\u5b57\u6bb5\u7684\u503c\u4f7f\u7528\u3002<\/p>\n<p>\u662f\u5426\u5c06 metricsReporting \u8bbe\u7f6e\u4e3a true\uff0c\u5c06\u51b3\u5b9a\u662f\u5426\u5c06\u5176\u8f93\u51fa\u4e3a Prometheus \u6307\u6807\u3002\u5982\u679c\u8bbe\u7f6e\u4e3a true\uff0c\u5219\u4f1a\u5305\u542b\u5728 NPD \u7684 Prometheus \u6307\u6807\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code># HELP problem_counter Number of times a specific type of problem have occurred.\r\n# TYPE problem_counter counter\r\nproblem_counter{reason=\"UPFileDoesNotExist\"} 17\r\nproblem_counter{reason=\"UpFileDoesNotExist\"} 1\r\n# HELP problem_gauge Whether a specific type of problem is affecting the node or not.\r\n# TYPE problem_gauge gauge\r\nproblem_gauge{reason=\"UpFileDoesNotExist\",type=\"UpFile\"} 1\r\nproblem_gauge{reason=\"UpFileExists\",type=\"UpFile\"} 0\r\n<\/code><\/pre>\n<p>\u6761\u4ef6\u662f\u9ed8\u8ba4\u6761\u4ef6\u7684\u8bbe\u7f6e\u3002\u63cf\u8ff0\u72b6\u6001\u6b63\u5e38\u65f6\u7684\u6761\u4ef6\u3002\u5728\u8fd9\u91cc\u8bbe\u7f6e\u7684\u6761\u4ef6\u5c06\u5728\u72b6\u6001\u4e3aFalse\u65f6\u751f\u6548\u3002<\/p>\n<p>\u89c4\u5219\u662f\u8bbe\u7f6e\u6267\u884c\u76d1\u89c6\u811a\u672c\u7684\u89c4\u5219\u3002<\/p>\n<p>type: temporary \u307e\u305f\u306f permanent \u306e\u3069\u3061\u3089\u304b<\/p>\n<p>temporary: Event \u306e\u4f5c\u6210<\/p>\n<p>permanent: \u30ce\u30fc\u30c9 Condition \u306e\u5909\u66f4<\/p>\n<p>reason: Event \u304a\u3088\u3073 \u30ce\u30fc\u30c9\u306e Condition \u306e Reason \u306b\u4f7f\u308f\u308c\u308b\u6587\u5b57\u5217<\/p>\n<p>path: \u5b9f\u884c\u3059\u308b\u76e3\u8996\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u30d1\u30b9<\/p>\n<p>timeout: \/pluginConfig\/timeout \u306e\u8a2d\u5b9a\u3092\u4e0a\u66f8\u304d\u3059\u308b\u8a2d\u5b9a<\/p>\n<h2>\u5b9e\u65bd\u76d1\u89c6\u811a\u672c<\/h2>\n<p>\u4e3a\u4e86\u4e0eNPD\u5408\u4f5c\uff0c\u76d1\u89c6\u811a\u672c\u7684\u5b9e\u65bd\u5fc5\u987b\u9075\u5faa\u4ee5\u4e0b\u89c4\u5219\u3002<\/p>\n<p>\u6839\u636e\u95ee\u9898\u7684\u53d1\u73b0\u4e0e\u5426\uff0c\u76d1\u89c6\u811a\u672c\u7684\u7ed3\u675f\u4ee3\u7801\u5c06\u4f5c\u51fa\u76f8\u5e94\u7684\u66f4\u6539\u3002<\/p>\n<p>0: OK. \u554f\u984c\u304c\u306a\u3044\u5834\u5408<\/p>\n<p>temporary: Event \u304c\u4f5c\u6210\u3055\u308c\u306a\u3044<\/p>\n<p>permanent: \u30ce\u30fc\u30c9\u306e Condition \u304c False \u306b\u8a2d\u5b9a\u3055\u308c\u308b<\/p>\n<p>1: NONOK. \u554f\u984c\u304c\u3042\u308b\u5834\u5408<\/p>\n<p>temporary: Event \u304c\u4f5c\u6210\u3055\u308c\u308b\uff08Severity \u306f Warning\uff09<\/p>\n<p>permanent: \u30ce\u30fc\u30c9\u306e Condition \u304c True \u306b\u8a2d\u5b9a\u3055\u308c\u308b<\/p>\n<p>2: Unknown. \u305d\u306e\u307b\u304b<\/p>\n<p>temporary: Event \u304c\u4f5c\u6210\u3055\u308c\u308b\uff08Severity \u306f Warning\uff09<\/p>\n<p>permanent: \u30ce\u30fc\u30c9\u306e Condition \u304c Unknown \u306b\u8a2d\u5b9a\u3055\u308c\u308b<\/p>\n<p>\u5982\u679c\u6807\u51c6\u8f93\u51fa\u8d85\u8fc7\u4e86\u81ea\u5b9a\u4e49\u63d2\u4ef6\u7684\u8bbe\u7f6e\u4e2d\u201c\/pluginConfig\/max_output_length\u201d\u7684\u6307\u5b9a\u5b57\u7b26\u4e32\u957f\u5ea6\uff0c\u90a3\u4e48\u5b83\u5c06\u88ab\u622a\u65ad\u3002<\/p>\n<p>temporary: Event message \u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u6587\u5b57\u5217<\/p>\n<p>permanent: \u30ce\u30fc\u30c9\u306e Condition \u306e message \u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u6587\u5b57\u5217<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u68c0\u67e5\u8282\u70b9\u4e0a\u662f\u5426\u5b58\u5728 \/custom-data\/up \u6587\u4ef6\u7684\u76d1\u63a7\u811a\u672c\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\">#!\/usr\/bin\/env bash<\/span>\r\n\r\n<span class=\"nb\">set<\/span> <span class=\"nt\">-e<\/span> <span class=\"nt\">-o<\/span> pipefail<span class=\"p\">;<\/span> <span class=\"o\">[[<\/span> <span class=\"nt\">-n<\/span> <span class=\"s2\">\"<\/span><span class=\"nv\">$DEBUG<\/span><span class=\"s2\">\"<\/span> <span class=\"o\">]]<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"nb\">set<\/span> <span class=\"nt\">-x<\/span>\r\n\r\n<span class=\"nb\">readonly <\/span><span class=\"nv\">OK<\/span><span class=\"o\">=<\/span>0\r\n<span class=\"nb\">readonly <\/span><span class=\"nv\">NONOK<\/span><span class=\"o\">=<\/span>1\r\n<span class=\"nb\">readonly <\/span><span class=\"nv\">UNKNOWN<\/span><span class=\"o\">=<\/span>2\r\n\r\n<span class=\"nb\">readonly <\/span><span class=\"nv\">UP_FILE<\/span><span class=\"o\">=<\/span><span class=\"s2\">\"\/custom-data\/up\"<\/span>\r\n\r\n<span class=\"k\">if<\/span> <span class=\"o\">[[<\/span> <span class=\"nt\">-f<\/span> <span class=\"s2\">\"<\/span><span class=\"nv\">$UP_FILE<\/span><span class=\"s2\">\"<\/span> <span class=\"o\">]]<\/span><span class=\"p\">;<\/span> <span class=\"k\">then\r\n  <\/span><span class=\"nb\">echo<\/span> <span class=\"s2\">\"<\/span><span class=\"nv\">$UP_FILE<\/span><span class=\"s2\"> exists\"<\/span>\r\n  <span class=\"nb\">exit<\/span> <span class=\"nv\">$OK<\/span>\r\n<span class=\"k\">fi\r\n\r\n<\/span><span class=\"nb\">echo<\/span> <span class=\"s2\">\"<\/span><span class=\"nv\">$UP_FILE<\/span><span class=\"s2\"> does not exist\"<\/span>\r\n<span class=\"nb\">exit<\/span> <span class=\"nv\">$NONOK<\/span>\r\n<span class=\"c\"># vim: ai ts=2 sw=2 et sts=2 ft=sh<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u76ee\u524d\u7684\u81ea\u5b9a\u4e49\u63d2\u4ef6\u914d\u7f6e\u548c\u76d1\u89c6\u811a\u672c\u6240\u521b\u5efa\u7684\u4e8b\u4ef6\u548c\u8282\u70b9\u6761\u4ef6\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<p>\u4e8b\u4ef6<\/p>\n<pre class=\"post-pre\"><code>$ kubectl get events\r\nLAST SEEN   TYPE      REASON               OBJECT          MESSAGE\r\n46m         Normal    UpFileDoesNotExist   node\/minikube   Node condition UpFile is now: True, reason: UpFileDoesNotExist\r\n116s        Warning   UPFileDoesNotExist   node\/minikube   \/custom-data\/up does not exist\r\n<\/code><\/pre>\n<p>\u8282\u70b9\u6761\u4ef6<\/p>\n<pre class=\"post-pre\"><code>$ kubectl describe node minikube | grep -A 9 Conditions\r\nConditions:\r\n  Type                 Status  LastHeartbeatTime                 LastTransitionTime                Reason                       Message\r\n  ----                 ------  -----------------                 ------------------                ------                       -------\r\n  KernelDeadlock       False   Wed, 05 Aug 2020 14:03:52 +0900   Wed, 05 Aug 2020 13:17:44 +0900   KernelHasNoDeadlock          kernel has no deadlock\r\n  ReadonlyFilesystem   False   Wed, 05 Aug 2020 14:03:52 +0900   Wed, 05 Aug 2020 13:17:44 +0900   FilesystemIsNotReadOnly      Filesystem is not read-only\r\n  UpFile               True    Wed, 05 Aug 2020 14:03:52 +0900   Wed, 05 Aug 2020 13:18:44 +0900   UpFileDoesNotExist           \/custom-data\/up does not exist\r\n  MemoryPressure       False   Wed, 05 Aug 2020 14:01:33 +0900   Thu, 30 Jul 2020 14:40:50 +0900   KubeletHasSufficientMemory   kubelet has sufficient memory available\r\n  DiskPressure         False   Wed, 05 Aug 2020 14:01:33 +0900   Thu, 30 Jul 2020 14:40:50 +0900   KubeletHasNoDiskPressure     kubelet has no disk pressure\r\n  PIDPressure          False   Wed, 05 Aug 2020 14:01:33 +0900   Thu, 30 Jul 2020 14:40:50 +0900   KubeletHasSufficientPID      kubelet has sufficient PID available\r\n  Ready                True    Wed, 05 Aug 2020 14:01:33 +0900   Thu, 30 Jul 2020 14:40:52 +0900   KubeletReady                 kubelet is posting ready status\r\n\r\n$ kubectl get node minikube -o yaml | grep -B 5 \"type: UpFile\"\r\n  - lastHeartbeatTime: \"2020-08-05T05:03:52Z\"\r\n    lastTransitionTime: \"2020-08-05T04:18:44Z\"\r\n    message: \/custom-data\/up does not exist\r\n    reason: UpFileDoesNotExist\r\n    status: \"True\"\r\n    type: UpFile\r\n<\/code><\/pre>\n<h2>\u6ce8\u518c\u81ea\u5b9a\u4e49\u63d2\u4ef6\u5e76\u6267\u884cNPD\u3002<\/h2>\n<p>\u4e00\u65e6\u4f60\u51c6\u5907\u597d\u4e86\u81ea\u5b9a\u4e49\u63d2\u4ef6\u7684\u8bbe\u7f6e\u548c\u76d1\u89c6\u811a\u672c\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u5c06\u5176\u6ce8\u518c\u5230NPD\u5e76\u8fdb\u884c\u6267\u884c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u6e05\u5355\u7684\u90e8\u5206\u8bf4\u660e\u3002<\/p>\n<pre class=\"post-pre\"><code><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\">DaemonSet<\/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\">node-problem-detector<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"s\">...<\/span>\r\n    <span class=\"s\">spec<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">containers<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">node-problem-detector<\/span>\r\n        <span class=\"na\">image<\/span><span class=\"pi\">:<\/span>  <span class=\"s2\">\"<\/span><span class=\"s\">k8s.gcr.io\/node-problem-detector:v0.8.2\"<\/span>\r\n        <span class=\"na\">command<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"s\">\/node-problem-detector<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"s\">--logtostderr<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"s\">--config.system-log-monitor=\/config\/kernel-monitor.json,\/config\/docker-monitor.json<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"s\">--prometheus-address=0.0.0.0<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"s\">--prometheus-port=20257<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"s\">--k8s-exporter-heartbeat-period=5m0s<\/span>\r\n        <span class=\"c1\"># \u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u6307\u5b9a\u3057\u307e\u3059<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"s\">--custom-plugin-monitors=\/custom-config\/custom-plugin-monitor.json<\/span>\r\n        <span class=\"na\">volumeMounts<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"s\">...<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">custom-data<\/span>\r\n          <span class=\"na\">mountPath<\/span><span class=\"pi\">:<\/span> <span class=\"s\">\/custom-data<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">custom-config<\/span>\r\n          <span class=\"na\">mountPath<\/span><span class=\"pi\">:<\/span> <span class=\"s\">\/custom-config<\/span>\r\n          <span class=\"na\">readOnly<\/span><span class=\"pi\">:<\/span> <span class=\"no\">true<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">custom-plugin<\/span>\r\n          <span class=\"na\">mountPath<\/span><span class=\"pi\">:<\/span> <span class=\"s\">\/custom-config\/plugin<\/span>\r\n          <span class=\"na\">readOnly<\/span><span class=\"pi\">:<\/span> <span class=\"no\">true<\/span>\r\n      <span class=\"s\">...<\/span>\r\n      <span class=\"c1\"># \u4eca\u56de\u306e\u76e3\u8996\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u30db\u30b9\u30c8\u4e0a\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u3001hostPath \u3067\u30de\u30a6\u30f3\u30c8\u3057\u307e\u3059<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">custom-data<\/span>\r\n        <span class=\"na\">hostPath<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">path<\/span><span class=\"pi\">:<\/span> <span class=\"s\">\/custom-data<\/span>\r\n          <span class=\"na\">type<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Directory<\/span>\r\n      <span class=\"c1\"># \u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306f ConfigMap \u304b\u3089\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">custom-config<\/span>\r\n        <span class=\"na\">configMap<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">node-problem-detector-custom-config<\/span>\r\n      <span class=\"c1\"># \u3053\u3053\u3067\u306f\u30ab\u30b9\u30bf\u30e0\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u76e3\u8996\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u306a\u306e\u3067 ConfigMap \u304b\u3089\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059<\/span>\r\n      <span class=\"c1\"># \u306a\u304a\u3001\u76e3\u8996\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u5b9f\u884c\u30d5\u30a1\u30a4\u30eb\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u306e\u3067\u3001configMap.defaultMode \u3067\u30d5\u30a1\u30a4\u30eb\u306e\u30e2\u30fc\u30c9\u3092 555 \u306a\u3069\u306b\u8a2d\u5b9a\u3057\u3066\u304a\u304f\u3068\u3088\u3044\u3067\u3057\u3087\u3046<\/span>\r\n      <span class=\"c1\"># Go \u8a00\u8a9e\u3067\u5b9f\u88c5\u3057\u305f\u5834\u5408\u306f init-container \u3067 emptyDir \u3067\u5171\u6709\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f7f\u3063\u3066 NPD \u30b3\u30f3\u30c6\u30ca\u304b\u3089\u53c2\u7167\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">custom-plugin<\/span>\r\n        <span class=\"na\">configMap<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">node-problem-detector-custom-plugin<\/span>\r\n          <span class=\"na\">defaultMode<\/span><span class=\"pi\">:<\/span> <span class=\"m\">0555<\/span>\r\n<\/code><\/pre>\n<p>\u539f\u6587\uff1a\u4e0a\u8a18\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306e\u5b8c\u5168\u7248\u306f https:\/\/github.com\/superbrothers-sandbox\/try-node-problem-detector-custom-plugin-monitor\/blob\/master\/node-problem-detector.yaml \u306b\u3042\u308a\u307e\u3059\u3002minikube \u30af\u30e9\u30b9\u30bf\u3067\u8a66\u305b\u308b\u624b\u9806\u304c https:\/\/github.com\/superbrothers-sandbox\/try-node-problem-detector-custom-plugin-monitor \u306b\u3042\u308b\u306e\u3067\u6c17\u306b\u306a\u308b\u65b9\u306f\u3084\u3063\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u7ffb\u8bd1\uff1a\u4f60\u53ef\u4ee5\u5728 https:\/\/github.com\/superbrothers-sandbox\/try-node-problem-detector-custom-plugin-monitor\/blob\/master\/node-problem-detector.yaml \u627e\u5230\u4e0a\u8ff0\u6e05\u5355\u6587\u4ef6\u7684\u5b8c\u6574\u7248\u3002\u5982\u679c\u4f60\u5bf9\u6b64\u611f\u5174\u8da3\uff0c\u53ef\u4ee5\u6309\u7167 https:\/\/github.com\/superbrothers-sandbox\/try-node-problem-detector-custom-plugin-monitor \u4e0a\u7684\u6307\u5357\u5728minikube\u96c6\u7fa4\u4e0a\u5c1d\u8bd5\u4e00\u4e0b\u3002<\/p>\n<h2>\u6211\u60f3\u901a\u8fc7\u66f4\u6539\u8282\u70b9\u7684\u6761\u4ef6\u6765\u6267\u884c\u64cd\u4f5c\u3002<\/h2>\n<p>\u901a\u8fc7 NPD \u53ef\u4ee5\u521b\u5efa\u4e8b\u4ef6\u5e76\u66f4\u6539\u8282\u70b9\u6761\u4ef6\uff0c\u4ee5\u4fbf\u53ef\u4ee5\u4e86\u89e3\u8282\u70b9\u7684\u72b6\u6001\uff0c\u5e76\u901a\u8fc7\u76d1\u89c6\u6765\u53d1\u73b0\u5e76\u89e3\u51b3\u95ee\u9898\u3002\u6b64\u5916\uff0c\u5982\u679c\u5df2\u7ecf\u786e\u5b9a\u89e3\u51b3\u95ee\u9898\u7684\u65b9\u6cd5\uff0c\u90a3\u4e48\u6211\u4eec\u5e94\u8be5\u5e0c\u671b\u5c06\u5176\u81ea\u52a8\u5316\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528planetlabs\/draino\u901a\u8fc7\u66f4\u6539\u7279\u5b9a\u8282\u70b9\u7684\u6761\u4ef6\u6765\u5bf9\u76ee\u6807\u8282\u70b9\u6267\u884ckubectl drain\u64cd\u4f5c\u3002\u8be5\u5de5\u5177\u4f1a\u6839\u636e\u8282\u70b9\u7684\u6807\u7b7e\u548c\u6761\u4ef6\u81ea\u52a8\u5730\u5bf9\u76ee\u6807\u8282\u70b9\u8fdb\u884cdrain\u5904\u7406\u3002<\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528pfnet-research\/node-operation-controller\u6765\u6267\u884c\u5bf9\u7279\u5b9a\u6761\u4ef6\u4e0b\u7684\u8282\u70b9\u8fdb\u884c\u4efb\u610f\u5904\u7406\u7684\u64cd\u4f5c\u3002\u4f7f\u7528\u8be5\u63a7\u5236\u5668\u53ef\u4ee5\u81ea\u52a8\u91cd\u542f\u51fa\u73b0\u95ee\u9898\u7684\u8282\u70b9\u3002\u8be5\u63a7\u5236\u5668\u5b9e\u9645\u4e0a\u5728PFN\u516c\u53f8\u7684\u96c6\u7fa4\u4e2d\u4f7f\u7528\u3002<\/p>\n<h2>\u6700\u540e<\/h2>\n<p>\u5728\u8fd9\u91cc\u6211\u4eec\u8bb2\u89e3\u4e86\u5982\u4f55\u5728NPD\u4e2d\u4f7f\u7528\u81ea\u5b9a\u4e49\u63d2\u4ef6\u3002NPD\u63d0\u4f9b\u4e86\u5404\u79cd\u65b9\u5f0f\u6765\u8bbe\u7f6e\u8282\u70b9\u6761\u4ef6\uff0c\u975e\u5e38\u4fbf\u5229\u3002\u540c\u65f6\uff0c\u60a8\u8fd8\u53ef\u4ee5\u5c06\u5176\u4e0e\u4e00\u4e9b\u63a7\u5236\u5668\u7b80\u5355\u7ed3\u5408\uff0c\u5b9e\u73b0\u8282\u70b9\u64cd\u4f5c\u7684\u81ea\u52a8\u5316\u3002\u8bf7\u52a1\u5fc5\u5c1d\u8bd5\u4f7f\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 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