{"id":43667,"date":"2024-01-07T04:37:18","date_gmt":"2023-05-11T23:23:15","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8prometheus-node-exporter-%e7%9b%91%e6%8e%a7cpu%e3%80%81%e5%86%85%e5%ad%98%e5%92%8c%e7%a3%81%e7%9b%98%e3%80%82\/"},"modified":"2024-05-04T17:14:56","modified_gmt":"2024-05-04T09:14:56","slug":"%e4%bd%bf%e7%94%a8prometheus-node-exporter-%e7%9b%91%e6%8e%a7cpu%e3%80%81%e5%86%85%e5%ad%98%e5%92%8c%e7%a3%81%e7%9b%98%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8prometheus-node-exporter-%e7%9b%91%e6%8e%a7cpu%e3%80%81%e5%86%85%e5%ad%98%e5%92%8c%e7%a3%81%e7%9b%98%e3%80%82\/","title":{"rendered":"\u4f7f\u7528[Prometheus] Node Exporter \u76d1\u63a7CPU\u3001\u5185\u5b58\u548c\u78c1\u76d8"},"content":{"rendered":"<h2>\u76ee\u5f55<\/h2>\n<ul class=\"post-ul\">[\u76ee\u6b21] Prometheus\u3067\u76e3\u8996\u30b7\u30b9\u30c6\u30e0\u3092\u4f5c\u308b with Docker<\/ul>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u4ee5\u4e0b\u662f\u7528PromQL\u76d1\u63a7CPU\u548c\u5185\u5b58\u7684Prometheus\u793a\u4f8b\u3002<\/p>\n<h2>\u76f8\u5173\u6587\u7ae0<\/h2>\n<p>\u8bf7\u53c2\u8003\u4ee5\u4e0b\u94fe\u63a5\u4ee5\u8bbe\u7f6e Prometheus \u548c Node Exporter \u7684\u73af\u5883\u642d\u5efa\u6b65\u9aa4\u3002<br \/>\n\u8bbe\u7f6e Prometheus \u73af\u5883\u7684\u65b9\u6cd5\u5982\u4e0b\u3002<\/p>\n<p>\u53c2\u8003\u306bPromQL\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u8bf7\u770b\u8fd9\u91cc\u3002<br \/>\n\u5728\u5904\u7406PromQL\u4e4b\u524d\uff0c\u6700\u597d\u8981\u4e86\u89e3\u7684\u77e5\u8bc6\u5728\u8fd9\u91cc\u3002<\/p>\n<h2>\u4e2d\u592e\u5904\u7406\u5668\u5229\u7528\u7387<\/h2>\n<div>\n<div class=\"post-table\">PromQL\u610f\u5473node_cpu_seconds_total\u5404\u30b3\u30a2\uff0c\u5404\u30e2\u30fc\u30c9\u306eCPU\u4f7f\u7528\u6642\u9593\u306e\u7d2f\u8a08\u3092\u8a18\u9332\u3057\u305f\u30e1\u30c8\u30ea\u30c3\u30af(\u79d2)<\/div>\n<\/div>\n<p>\u5728example.com:9100\u4e0a\u5b89\u88c5\u4e86node-exporter\uff0c\u8ba1\u7b97\u9664\u53bbidle\u6a21\u5f0f\u7684\u6bcf\u4e2a\u6a21\u5f0f\u5728\u6700\u8fd1\u4e00\u5206\u949f\u5185\u7684\u5e73\u5747CPU\u4f7f\u7528\u65f6\u95f4\u7684PromQL\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_cpu_seconds_total<\/span><span class=\"p\">{<\/span><span class=\"na\">mode<\/span><span class=\"o\">!=<\/span><span class=\"s2\">\"idle\"<\/span><span class=\"p\">}[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">])<\/span>\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/11-0.png\" alt=\"Screen Shot 2021-06-08 at 18.59.14.png\" \/><\/div>\n<p>\u4ee5\u4e0b\u7684\u8868\u683c\u603b\u7ed3\u4e86\u5404\u4e2a\u6a21\u5f0f\u53ca\u5176\u610f\u4e49\u3002\u5728\u4e0a\u8ff0\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5254\u9664\u4e86idle\u7684\u7ed3\u679c\u3002<\/p>\n<div>\n<div class=\"post-table\">modedescuser\u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30bb\u30b9\u304cCPU\u3092\u4f7f\u7528\u3059\u308b\u6642\u9593system\u30ab\u30fc\u30cd\u30eb\u30d7\u30ed\u30bb\u30b9\u304cCPU\u3092\u4f7f\u7528\u3059\u308b\u6642\u9593nice\u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30bb\u30b9\u30b9\u30da\u30fc\u30b9\u3067\u512a\u5148\u5ea6\u304c\u5909\u66f4\u3055\u308c\u305f\u30d7\u30ed\u30bb\u30b9\u306b\u3088\u3063\u3066\u4f7f\u7528\u3055\u308c\u308bCPU\u6642\u9593idle\u30a2\u30a4\u30c9\u30eb\uff08\u8ab0\u3082\u4f7f\u7528\u3057\u306a\u3044\uff09CPU\u6642\u9593iowaitio\u3092\u5f85\u6a5f\u3057\u3066\u3044\u308bCPU\u6642\u9593irq\u30cf\u30fc\u30c9\u5272\u308a\u8fbc\u307f\u306eCPU\u6642\u9593(hardware interrupts)softirq\u30bd\u30d5\u30c8\u5272\u308a\u8fbc\u307f\u306eCPU\u6642\u9593(software interrupts)steal\u30cf\u30a4\u30d1\u30fc\u30d0\u30a4\u30b6\u30fc\u306b\u3088\u3063\u3066\u4f7f\u7528\u3055\u308c\u308bCPU\u6642\u9593<\/div>\n<\/div>\n<p>\u5f53\u4f60\u6267\u884ctop\u547d\u4ee4\u65f6\uff0c\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u7c7b\u578b\u7684\u884c\uff0c\u8fd9\u91cc\u663e\u793a\u7684us\uff0csy\uff0cni\u7b49\u4ee3\u8868\u8fd9\u4e9b\u6a21\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code>%Cpu(s):  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st\r\n<\/code><\/pre>\n<h3>\u5bf9\u4e8e\u591a\u6838\u5fc3CPU<\/h3>\n<p>\u5982\u679c\u662f\u591a\u6838\u8282\u70b9\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u8ba1\u7b97\u6bcf\u4e2a\u6a21\u5f0f\u7684\u5e73\u5747\u503c\u3002<br \/>\nwithout(cpu)\u662f\u4e3a\u4e86\u8ba1\u7b97\u6bcf\u4e2aCPU\u7684\u5e73\u5747\u503c\uff0c\u5728\u8ba1\u7b97\u65f6\u5ffd\u7565CPU\u7f16\u53f7\u7684\u8868\u8fbe\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nf\">avg<\/span> <span class=\"k\">without<\/span><span class=\"p\">(<\/span><span class=\"na\">cpu<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_cpu_seconds_total<\/span><span class=\"p\">{<\/span><span class=\"na\">instance<\/span><span class=\"o\">=<\/span><span class=\"s2\">\"example.com:9100\"<\/span><span class=\"p\">,<\/span>  <span class=\"na\">mode<\/span><span class=\"o\">!=<\/span><span class=\"s2\">\"idle\"<\/span><span class=\"p\">}[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">]))<\/span>\r\n<\/code><\/pre>\n<p>\u9664\u4e86avg\u4e4b\u5916\uff0c\u8fd8\u6709avg_over_time\u3002<br \/>\navg\u548crate\u7ec4\u5408\u5728\u4e00\u8d77\u8ba1\u7b97\uff0c\u800cavg_over_time\u5219\u7b80\u5355\u5730\u8ba1\u7b97\u65f6\u95f4\u8303\u56f4\u5185\u7684\u5e73\u5747\u503c\u3002<br \/>\n\u53ef\u4ee5\u8fd9\u6837\u4f7f\u7528\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">avg_over_time<\/span><span class=\"p\">(<\/span><span class=\"n\">node_cpu_seconds_total<\/span><span class=\"p\">{<\/span><span class=\"na\">mode<\/span><span class=\"o\">!=<\/span><span class=\"s2\">\"idle\"<\/span><span class=\"p\">}[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">])<\/span>\r\n<\/code><\/pre>\n<p>\u53c2\u8003\u4e00\uff1a\u7528\u793a\u4f8b\u5b66\u4e60\uff01\u4f7f\u7528PromQL\u81ea\u7531\u7ed8\u5236\u56fe\u8868\uff08Prometheus + Grafana\uff09<\/p>\n<h3>\u8f93\u51faCPU\u4f7f\u7528\u7387\u8d85\u8fc780%\u7684\u793a\u4f8b\u3002<\/h3>\n<pre class=\"post-pre\"><code><span class=\"nf\">avg<\/span> <span class=\"k\">without<\/span><span class=\"p\">(<\/span><span class=\"na\">cpu<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_cpu_seconds_total<\/span><span class=\"p\">{<\/span><span class=\"na\">instance<\/span><span class=\"o\">=<\/span><span class=\"s2\">\"example.com:9100\"<\/span><span class=\"p\">,<\/span>  <span class=\"na\">mode<\/span><span class=\"o\">!=<\/span><span class=\"s2\">\"idle\"<\/span><span class=\"p\">}[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">]))<\/span> <span class=\"o\">&gt;=<\/span> <span class=\"mf\">0.8<\/span>\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/24-0.png\" alt=\"Screen Shot 2021-06-08 at 19.02.56.png\" \/><\/div>\n<h2>\u8def\u5fb7-\u963f\u8d1d\u96f7\u5947<\/h2>\n<div>\n<div class=\"post-table\">PromQL\u610f\u5473node_load11\u5206\u9593\u306e\u30ed\u30fc\u30c9\u30a2\u30d9\u30ec\u30fc\u30b8node_load55\u5206\u9593\u306e\u30ed\u30fc\u30c9\u30a2\u30d9\u30ec\u30fc\u30b8node_load1515\u5206\u9593\u306e\u30ed\u30fc\u30c9\u30a2\u30d9\u30ec\u30fc\u30b8<\/div>\n<\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/27-0.png\" alt=\"Screen Shot 2021-06-08 at 21.12.54.png\" \/><\/div>\n<p>\u5982\u679c\u8981\u8fdb\u884c\u6807\u51c6\u5316\u5904\u7406\uff0c\u5e94\u8be5\u6309\u7167CPU\u6838\u5fc3\u6570\u91cf\u8fdb\u884c\u9664\u6cd5\u8fd0\u7b97\u3002<br \/>\nFYI: CPU\u8d1f\u8f7d\u8fd8\u662f\u6807\u51c6\u5316CPU\u8d1f\u8f7d\u66f4\u597d\uff1f<\/p>\n<h3>\u8f93\u51fa\u8d85\u8fc71\u7684\u8d1f\u8f7d\u5e73\u5747\u503c\uff08\u8fdb\u884c\u6b63\u5e38\u5316\uff09\u3002<\/h3>\n<pre class=\"post-pre\"><code><span class=\"c\"># \u30ed\u30fc\u30c9\u30a2\u30d9\u30ec\u30fc\u30b8 \/ CPU\u30b3\u30a2\u6570<\/span>\r\n<span class=\"n\">node_load1<\/span> <span class=\"o\">\/<\/span> <span class=\"nf\">count<\/span><span class=\"p\">(<\/span><span class=\"nf\">count<\/span><span class=\"p\">(<\/span><span class=\"n\">node_cpu_seconds_total<\/span><span class=\"p\">{<\/span><span class=\"na\">instance<\/span><span class=\"o\">=<\/span><span class=\"s2\">\"example.com:9100\"<\/span><span class=\"p\">})<\/span> <span class=\"k\">without<\/span> <span class=\"p\">(<\/span><span class=\"na\">mode<\/span><span class=\"p\">))<\/span> <span class=\"k\">without<\/span> <span class=\"p\">(<\/span><span class=\"na\">cpu<\/span><span class=\"p\">)<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">1<\/span>\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/31-0.png\" alt=\"Screen Shot 2021-06-08 at 21.32.19.png\" \/><\/div>\n<h2>\u5185\u5b58\u4f7f\u7528\u7387<\/h2>\n<div>\n<div class=\"post-table\">PromQL\u610f\u5473node_memory_MemTotal_bytes\u30e1\u30e2\u30ea\u7dcf\u5bb9\u91cfnode_memory_MemAvailable_bytes\u30e1\u30e2\u30ea\u7a7a\u304d\u5bb9\u91cf<\/div>\n<\/div>\n<pre class=\"post-pre\"><code><span class=\"c\"># \u30e1\u30e2\u30ea\u7dcf\u5bb9\u91cf - \u30e1\u30e2\u30ea\u7a7a\u304d\u5bb9\u91cf = \u73fe\u5728\u306e\u4f7f\u7528\u91cf<\/span>\r\n<span class=\"n\">node_memory_MemTotal_bytes<\/span> <span class=\"o\">-<\/span> <span class=\"n\">node_memory_MemAvailable_bytes<\/span>\r\n<\/code><\/pre>\n<h3>\u8f93\u51fa\u5185\u5b58\u4f7f\u7528\u7387\u8d85\u8fc780%\u4ee5\u4e0a\u7684\u5185\u5bb9<\/h3>\n<pre class=\"post-pre\"><code><span class=\"p\">(<\/span><span class=\"n\">node_memory_MemTotal_bytes<\/span> <span class=\"o\">-<\/span> <span class=\"n\">node_memory_MemAvailable_bytes<\/span><span class=\"p\">)<\/span> <span class=\"o\">\/<\/span> <span class=\"n\">node_memory_MemTotal_bytes<\/span> <span class=\"o\">&gt;=<\/span> <span class=\"mf\">0.8<\/span>\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/37-0.png\" alt=\"Screen Shot 2021-06-08 at 21.36.01.png\" \/><\/div>\n<h2>\u5132\u5b58\u5bb9\u91cf<\/h2>\n<div>\n<div class=\"post-table\">PromQL\u610f\u5473node_filesystem_size_bytes\u30c7\u30a3\u30b9\u30af\u7dcf\u5bb9\u91cf(bytes)node_filesystem_avail_bytes\u6b8b\u308a\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf(bytes)<\/div>\n<\/div>\n<p>\u78c1\u76d8\u4f7f\u7528\u7387<\/p>\n<pre class=\"post-pre\"><code><span class=\"mi\">1<\/span> <span class=\"o\">-<\/span> <span class=\"p\">(<\/span><span class=\"n\">node_filesystem_avail_bytes<\/span> <span class=\"o\">\/<\/span> <span class=\"n\">node_filesystem_size_bytes<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<h2>inode\u5229\u7528\u7387<\/h2>\n<div>\n<div class=\"post-table\">PromQL\u610f\u5473node_filesystem_files_freefree\u306einode\u6570node_filesystem_files\u7dcfinode\u6570<\/div>\n<\/div>\n<p>inode\u7684\u5229\u7528\u7387<\/p>\n<pre class=\"post-pre\"><code><span class=\"mi\">1<\/span> <span class=\"o\">-<\/span> <span class=\"p\">(<\/span><span class=\"n\">node_filesystem_files_free<\/span> <span class=\"o\">\/<\/span> <span class=\"n\">node_filesystem_files<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<h2>\u901a\u8fc7I\/O\u8bf7\u6c42\u5bfc\u81f4\u7684CPU\u4f7f\u7528\u7387<\/h2>\n<div>\n<div class=\"post-table\">PromQL\u610f\u5473node_disk_io_time_seconds_totalIO\u306b\u8cbb\u3084\u3055\u308c\u305f\u6642\u9593\u306e\u5408\u8a08\u79d2\u6570<\/div>\n<\/div>\n<p>Prometheus\u7684rate(node_disk_io_time_seconds_total[1m])\u7b49\u540c\u4e8eiostat\u547d\u4ee4\u4e2d\u7684%util\u503c\u3002<\/p>\n<p>%util\u662f\u7531\u5bf9\u8bbe\u5907\u7684I\/O\u8bf7\u6c42\u5f15\u8d77\u7684CPU\u4f7f\u7528\u7387\u3002<br \/>\n\u53c2\u8003\uff1a\u5982\u4f55\u67e5\u770biostat\u3002<\/p>\n<h3>\u8bd5\u8bd5\u7ed9I\/O\u8d1f\u8f7d<\/h3>\n<p>\u7ed9\u4e88I\/O\u8d1f\u8f7d\uff0c\u7136\u540e\u6bd4\u8f83iostat\u547d\u4ee4\u548cPormQL rate(node_disk_io_time_seconds_total[1m])\u7684\u7ed3\u679c\u3002<\/p>\n<h4>\u63d0\u4f9b\u8d1f\u8377<\/h4>\n<p>\u4f7f\u7528stress-ng\u547d\u4ee4\u5bf930GB\u6570\u636e\u8fdb\u884c\u5199\u5165\uff0c\u4ee5\u7ed9\u7cfb\u7edf\u65bd\u52a0\u8d1f\u8377\u3002<br \/>\n\u53c2\u8003\uff1a\u4f7f\u7528stress-ng\u547d\u4ee4\u5728CPU\u3001\u5185\u5b58\u548c\u78c1\u76d8\u4e0a\u65bd\u52a0\u8d1f\u8f7d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> stress-ng <span class=\"nt\">-d<\/span> 3 <span class=\"nt\">--hdd-bytes<\/span> 30G\r\n<\/code><\/pre>\n<h4>iostat\u7ed3\u679c<\/h4>\n<div>\n<div class=\"post-table\">optiondesc-d\u30c7\u30d0\u30a4\u30b9\u4f7f\u7528\u7387\u306e\u307f\u3092\u51fa\u529b\u3059\u308b-t\u8a08\u6e2c\u3057\u305f\u6642\u523b\u3092\u51fa\u529b\u3059\u308b-x\u30c7\u30a3\u30b9\u30af\u7d71\u8a08\u60c5\u5831\u3092\u51fa\u529b\u3059\u308b1010\u79d2\u3054\u3068\u306e\u7d50\u679c\u3092\u51fa\u529b\u3059\u308b<\/div>\n<\/div>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>iostat <span class=\"nt\">-dtx<\/span> 10\r\nLinux 3.10.0-1127.19.1.el7.x86_64 <span class=\"o\">(<\/span>example.com<span class=\"o\">)<\/span>     06\/09\/2021  _x86_64_    <span class=\"o\">(<\/span>8 CPU<span class=\"o\">)<\/span>\r\n\r\n<span class=\"c\"># stress-ng\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u524d<\/span>\r\n06\/09\/2021 03:35:04 PM\r\nDevice:         rrqm\/s   wrqm\/s     r\/s     w\/s    rkB\/s    wkB\/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util\r\nvda               0.00     0.14    0.19    1.52    16.90    44.59    72.03     0.00    4.61    0.56    5.11   0.11   0.02\r\nscd0              0.00     0.00    0.00    0.00     0.00     0.00     9.96     0.00    0.72    0.72    0.00   0.72   0.00\r\n\r\n<span class=\"c\"># stress-ng\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u5f8c<\/span>\r\n06\/09\/2021 03:35:14 PM\r\nDevice:         rrqm\/s   wrqm\/s     r\/s     w\/s    rkB\/s    wkB\/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util\r\nvda               0.00     0.10    2.10 2051.00    91.60 1031840.25  1005.24    86.22   82.18    0.14   82.26   0.33  67.81\r\nscd0              0.00     0.00    0.00    0.00     0.00     0.00     0.00     0.00    0.00    0.00    0.00   0.00   0.00\r\n\r\n<span class=\"c\"># stress-ng\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u5f8c\u3001util\u304c100%\u8fd1\u304f\u306a\u3063\u3066\u3044\u308b<\/span>\r\n06\/09\/2021 03:35:24 PM\r\nDevice:         rrqm\/s   wrqm\/s     r\/s     w\/s    rkB\/s    wkB\/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util\r\nvda               0.00     2.40    0.20 2980.60     3.20 1498235.60  1005.26   127.44   84.47    4.50   84.48   0.34  99.97\r\nscd0              0.00     0.00    0.00    0.00     0.00     0.00     0.00     0.00    0.00    0.00    0.00   0.00   0.00\r\n<\/code><\/pre>\n<h4>PromQL\u7684\u7ed3\u679c<\/h4>\n<p>\u6839\u64daI\/O\u8acb\u6c42\u6240\u7522\u751f\u7684CPU\u4f7f\u7528\u7387\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_disk_io_time_seconds_total<\/span><span class=\"p\">[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">])<\/span>\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/61-0.png\" alt=\"Screen Shot 2021-06-09 at 15.34.03.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/62-0.png\" alt=\"Screen Shot 2021-06-09 at 15.36.59.png\" \/><\/div>\n<p>\u6211\u53ef\u4ee5\u786e\u8ba4 iostat \u547d\u4ee4\u7684 %uti \u548c PromQL \u7684\u7ed3\u679c\u90fd\u63a5\u8fd1\u4e8e100%\u3002<\/p>\n<h2>I\/O\u5ef6\u8fdf<\/h2>\n<div>\n<div class=\"post-table\">PromQL\u610f\u5473node_disk_read_time_seconds_totalIO\u306eread\u306b\u8cbb\u3084\u3055\u308c\u305f\u6642\u9593\u306e\u5408\u8a08\u79d2\u6570node_disk_reads_completed_total\u6b63\u5e38\u306b\u5b8c\u4e86\u3057\u305fread\u306e\u5408\u8a08\u6570node_disk_write_time_seconds_totalIO\u306ewrite\u306b\u8cbb\u3084\u3055\u308c\u305f\u6642\u9593\u306e\u5408\u8a08\u79d2\u6570node_disk_writes_completed_total\u6b63\u5e38\u306b\u5b8c\u4e86\u3057\u305fwrite\u306e\u5408\u8a08\u6570<\/div>\n<\/div>\n<p>\u8fd9\u4e9b\u503c\u662f\u4ece\/proc\/diskstats\u83b7\u5f97\u7684\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/67-0.png\" alt=\"Screen Shot 2021-06-09 at 23.43.39.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/68-0.png\" alt=\"Screen Shot 2021-06-09 at 23.43.50.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/69-0.png\" alt=\"Screen Shot 2021-06-09 at 23.44.00.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/70-0.png\" alt=\"Screen Shot 2021-06-09 at 23.44.09.png\" \/><\/div>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> <span class=\"nb\">cat<\/span> \/proc\/diskstats\r\n<span class=\"go\"> 252       0 vda 4682174 4304 929662806 2502865 27994455 2461794 1996846903 172438082 0 3754119 98035986\r\n 252       1 vda1 152 0 1216 61 0 0 0 0 0 61 61\r\n 252       2 vda2 4681923 4304 929656982 2502765 27816578 2461786 1996846823 172315078 0 2975909 96782251\r\n  11       0 sr0 53 0 528 38 0 0 0 0 0 38 38\r\n<\/span><\/code><\/pre>\n<p>\u53ef\u4ee5\u901a\u8fc7\u6bd4\u8f83PromQL\u7684\u7ed3\u679c\u548c\/proc\/diskstats\u7684\u503c\u6765\u786e\u8ba4\u5b83\u4eec\u662f\u76f8\u540c\u7684\u3002<br \/>\n\u867d\u7136\u5c0f\u6570\u70b9\u7684\u4f4d\u7f6e\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\uff0c\u4f46\u8fd9\u53ef\u80fd\u662f\u7531\u4e8e\u4f7f\u7528\u6beb\u79d2\u6216\u79d2\u8fdb\u884c\u6d4b\u91cf\u7684\u5dee\u5f02\u3002<\/p>\n<div>\n<div class=\"post-table\">PromQLsr0(Prom)sr0(diskstats)vda(Prom)vda(diskstats)node_disk_read_time_seconds_total<br \/>\n(\/proc\/diskstats:7\u5217\u76ee)0.038382502.86500000000022502865node_disk_reads_completed_total<br \/>\n(\/proc\/diskstats:4\u5217\u76ee)535346821744682174node_disk_write_time_seconds_total<br \/>\n(\/proc\/diskstats:11\u5217\u76ee)00172438.082172438082node_disk_writes_completed_total<br \/>\n(\/proc\/diskstats:8\u5217\u76ee)002799445527994455<\/div>\n<\/div>\n<h3>\u9605\u8bfb (Yu\u00e8 d\u00fa)<\/h3>\n<p>\u6bcf\u4e2a\u8bfb\u53d6\u64cd\u4f5c\u6240\u82b1\u8d39\u7684\u65f6\u95f4\u4e4b\u548c\uff08\u4ee5\u79d2\u4e3a\u5355\u4f4d\uff09\u9664\u4ee5\u6210\u529f\u5b8c\u6210\u7684\u8bfb\u53d6\u64cd\u4f5c\u7684\u603b\u6570 = \u6bcf\u6b21\u8bfb\u53d6\u64cd\u4f5c\u6240\u82b1\u8d39\u7684\u79d2\u6570<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_disk_read_time_seconds_total<\/span><span class=\"p\">[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">])<\/span> <span class=\"o\">\/<\/span> <span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_disk_reads_completed_total<\/span><span class=\"p\">[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">])<\/span>\r\n<\/code><\/pre>\n<h3>\u5199<\/h3>\n<p>\u6bcf\u6b21\u5199\u5165\u6240\u82b1\u8d39\u7684\u5e73\u5747\u65f6\u95f4 = \u5b8c\u6210\u6240\u6709\u5199\u5165\u6240\u82b1\u8d39\u7684\u603b\u65f6\u95f4\uff08\u79d2\uff09\/ \u6210\u529f\u5b8c\u6210\u7684\u5199\u5165\u6b21\u6570<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_disk_write_time_seconds_total<\/span><span class=\"p\">[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">])<\/span> <span class=\"o\">\/<\/span> <span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_disk_writes_completed_total<\/span><span class=\"p\">[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">])<\/span>\r\n<\/code><\/pre>\n<h2>\u5e73\u5747I\/O\u8bf7\u6c42\u5927\u5c0f<\/h2>\n<div>\n<div class=\"post-table\">PromQL\u610f\u5473node_disk_io_time_weighted_seconds_totalThe weighted number of seconds spent doing I\/Os<\/div>\n<\/div>\n<p>&#8220;The weighted number of seconds&#8221;\u5728\u76f4\u8bd1\u65f6\u662f\u201c\u52a0\u6743\u79d2\u6570\u201d\uff0c\u4f46\u662f\u610f\u4e49\u4e0d\u592a\u6e05\u695a\u3002\u5982\u679c\u662f\u52a0\u6743\u5e73\u5747\u7684\u8bdd\u5c31\u80fd\u7406\u89e3\u4e86\u3002\u8fd9\u662f\u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\u7ed9\u79d2\u6570\u52a0\u4e86\u6743\u91cd\u5417\uff1f\u6743\u91cd\u662f\u9488\u5bf9\u4ec0\u4e48\u7684\u5462\uff1f\u5927\u5c0f\uff1f\u8f93\u5165\/\u8f93\u51fa\u6570\u91cf\uff1f<\/p>\n<p>\u52a0\u91cd\u5e73\u5747\u662f\u4e00\u79cd\u8ba1\u7b97\u65b9\u6cd5 &#8211; \u3010\u7a0b\u5e8f\u5458\u7684\u7edf\u8ba1\u5b66\u3011\u4e0d\u53ea\u6709\u4e00\u79cd\u8ba1\u7b97\u5e73\u5747\u503c\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u8fd9\u4e2a\u64cd\u4f5c\u662f\u7528\u6765\u83b7\u53d6\/proc\/diskstats\u6587\u4ef6\u4e2d\u6700\u540e\u4e00\u5217\u7684\u503c\u3002\u5173\u4e8e\u6700\u540e\u4e00\u5217\u7684\u503c\uff0c\u5728\u4e0b\u9762\u8fdb\u884c\u4e86\u89e3\u91ca\u3002<\/p>\n<blockquote><p>\u9664\u6b63\u5728\u8fdb\u884c\u7684\u64cd\u4f5c\u4e4b\u5916\uff0c\u6240\u6709\u5b57\u6bb5\u90fd\u662f\u968f\u65f6\u95f4\u7d2f\u52a0\u7684\u8ba1\u6570\u5668\u3002\u6700\u540e\u4e00\u4e2a\u5b57\u6bb5\uff0c\u5373\u52a0\u6743\u6beb\u79d2\u6570\uff0c\u8868\u793a\u6267\u884cI\/O\u64cd\u4f5c\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5b83\u5305\u62ec\u4e86\u5f53\u524d\u6b63\u5728\u8fdb\u884c\u7684\u64cd\u4f5c\uff1b\u5b83\u57fa\u672c\u4e0a\u662f\u6bcf\u4e2a\u64cd\u4f5c\u6240\u82b1\u8d39\u65f6\u95f4\u7684\u603b\u548c\uff0c\u518d\u52a0\u4e0a\u5c1a\u672a\u5b8c\u6210\u7684\u64cd\u4f5c\u7684\u65f6\u95f4\u3002<br \/>\n\u5f15\u7528\u6765\u6e90\uff1ahttps:\/\/www.xaprb.com\/blog\/2010\/01\/09\/how-linux-iostat-computes-its-results\/<\/p><\/blockquote>\n<p>\u5c1d\u8bd5\u6bd4\u8f83PromQL\u548c\/proc\/diskstats\u7684\u503c\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/87-0.png\" alt=\"Screen Shot 2021-06-10 at 0.32.02.png\" \/><\/div>\n<pre class=\"post-pre\"><code>$ cat \/proc\/diskstats\r\n 252       0 vda 4682204 4304 929664814 2502877 27998500 2462121 1996915380 172444038 0 3754432 98041060\r\n 252       1 vda1 152 0 1216 61 0 0 0 0 0 61 61\r\n 252       2 vda2 4681953 4304 929658990 2502777 27820589 2462113 1996915300 172321011 0 2976171 96787196\r\n  11       0 sr0 53 0 528 38 0 0 0 0 0 38 38\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u901a\u8fc7\u6bd4\u8f83PromQL\u7684\u7ed3\u679c\u548c\/proc\/diskstats\u4e2d\u7684\u503c\u786e\u8ba4\u5b83\u4eec\u76f8\u540c\u3002<br \/>\n\u5c0f\u6570\u70b9\u4f4d\u7f6e\u4e0d\u540c\u662f\u56e0\u4e3a\u5b58\u5728\u4ee5\u4e0b\u5dee\u5f02\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\/proc\/diskstats =&gt; the weighted number of milliseconds spent doing I\/Os<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">node_disk_io_time_weighted_seconds_total =&gt; the weighted number of seconds spent doing I\/Os<\/ul>\n<div>\n<div class=\"post-table\">PromQLsr0(Prom)sr0(diskstats)vda(Prom)vda(diskstats)node_disk_io_time_weighted_seconds_total<br \/>\n(\/proc\/diskstats:\u6700\u5f8c\u306e\u5217\u76ee)0.0383898041.0698041060<\/div>\n<\/div>\n<p>\u867d\u7136\u6211\u4e0d\u660e\u767d\u201c\u52a0\u91cd\u79d2\u6570\u201d\u7684\u610f\u4e49\uff0c\u4f46\u636e\u8bf4\u7b97\u51faI\/O\u8bf7\u6c42\u7684\u5e73\u5747\u5927\u5c0f\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">rate<\/span><span class=\"p\">(<\/span><span class=\"n\">node_disk_io_time_weighted_seconds_total<\/span><span class=\"p\">[<\/span><span class=\"mi\">1m<\/span><span class=\"p\">])<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u65bd\u52a0\u8d1f\u8377\u4e4b\u540e\u6267\u884c\u4f1a\u6709\u4ee5\u4e0b\u7684\u611f\u89c9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> stress-ng <span class=\"nt\">-d<\/span> 3 <span class=\"nt\">--hdd-bytes<\/span> 30G\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/96-0.png\" alt=\"Screen Shot 2021-06-10 at 1.08.24.png\" \/><\/div>\n<h2>\u8b66\u793a\u89c4\u5219\u7684\u63cf\u8ff0\u793a\u4f8b<\/h2>\n<pre class=\"post-pre\"><code><span class=\"na\">groups<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">sample001<\/span>\r\n    <span class=\"na\">rules<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">alert<\/span><span class=\"pi\">:<\/span> <span class=\"s\">cpu_usage_exceeds_80%<\/span>\r\n        <span class=\"c1\"># CPU\u4f7f\u7528\u7387\u304c80%\u3092\u8d85\u3048\u3066\u3044\u308b\u3082\u306e<\/span>\r\n        <span class=\"na\">expr<\/span><span class=\"pi\">:<\/span> <span class=\"s\">avg without(cpu) (rate(node_cpu_seconds_total{mode!=\"idle\"}[1m])) &gt;= <\/span><span class=\"m\">0.8<\/span>\r\n        <span class=\"na\">for<\/span><span class=\"pi\">:<\/span> <span class=\"s\">5m<\/span>\r\n        <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">severity<\/span><span class=\"pi\">:<\/span> <span class=\"s\">critical<\/span>\r\n        <span class=\"na\">annotations<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">firing_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">CPU<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">exceeds<\/span> <span class=\"s\">80%\"<\/span>\r\n          <span class=\"na\">resolved_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">CPU<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">falls\"<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">alert<\/span><span class=\"pi\">:<\/span> <span class=\"s\">cpu_load_avg_exceeds_1<\/span>\r\n        <span class=\"c1\"># \u30ed\u30fc\u30c9\u30a2\u30d9\u30ec\u30fc\u30b8\u304c1\u3092\u8d85\u3048\u305f\u3082\u306e<\/span>\r\n        <span class=\"na\">expr<\/span><span class=\"pi\">:<\/span> <span class=\"s\">node_load1 \/ count(count(node_cpu_seconds_total) without (mode)) without (cpu) &gt; <\/span><span class=\"m\">1<\/span>\r\n        <span class=\"na\">for<\/span><span class=\"pi\">:<\/span> <span class=\"s\">5m<\/span>\r\n        <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">severity<\/span><span class=\"pi\">:<\/span> <span class=\"s\">critical<\/span>\r\n        <span class=\"na\">annotations<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">firing_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">CPU<\/span> <span class=\"s\">load<\/span> <span class=\"s\">average<\/span> <span class=\"s\">exceeds<\/span> <span class=\"s\">1\"<\/span>\r\n          <span class=\"na\">resolved_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">CPU<\/span> <span class=\"s\">load<\/span> <span class=\"s\">average<\/span> <span class=\"s\">falls\"<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">alert<\/span><span class=\"pi\">:<\/span> <span class=\"s\">memory_usage_exceeds_80%<\/span>\r\n        <span class=\"c1\"># \u30e1\u30e2\u30ea\u4f7f\u7528\u7387\u304c80%\u4ee5\u4e0a\u306e\u3082\u306e<\/span>\r\n        <span class=\"na\">expr<\/span><span class=\"pi\">:<\/span> <span class=\"s\">(node_memory_MemTotal_bytes - node_memory_MemAvailable_bytes) \/ node_memory_MemTotal_bytes &gt;= <\/span><span class=\"m\">0.8<\/span>\r\n        <span class=\"na\">for<\/span><span class=\"pi\">:<\/span> <span class=\"s\">5m<\/span>\r\n        <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">severity<\/span><span class=\"pi\">:<\/span> <span class=\"s\">critical<\/span>\r\n        <span class=\"na\">annotations<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">firing_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">Memory<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">exceeds<\/span> <span class=\"s\">80%\"<\/span>\r\n          <span class=\"na\">resolved_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">Memory<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">falls\"<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">alert<\/span><span class=\"pi\">:<\/span> <span class=\"s\">disk_usage_exceeds_80%<\/span>\r\n        <span class=\"c1\"># \u30c7\u30a3\u30b9\u30af\u4f7f\u7528\u7387\u304c80%\u4ee5\u4e0a\u306e\u3082\u306e<\/span>\r\n        <span class=\"na\">expr<\/span><span class=\"pi\">:<\/span> <span class=\"s\">1 - (node_filesystem_avail_bytes \/ node_filesystem_size_bytes) &gt;= <\/span><span class=\"m\">0.8<\/span>\r\n        <span class=\"na\">for<\/span><span class=\"pi\">:<\/span> <span class=\"s\">5m<\/span>\r\n        <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">severity<\/span><span class=\"pi\">:<\/span> <span class=\"s\">critical<\/span>\r\n        <span class=\"na\">annotations<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">firing_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">Disk<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">exceeds<\/span> <span class=\"s\">80%\"<\/span>\r\n          <span class=\"na\">resolved_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">Disk<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">falls\"<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">alert<\/span><span class=\"pi\">:<\/span> <span class=\"s\">disk_usage_exceeds_80%<\/span>\r\n        <span class=\"c1\"># inode\u4f7f\u7528\u7387\u304c80%\u4ee5\u4e0a\u306e\u3082\u306e<\/span>\r\n        <span class=\"na\">expr<\/span><span class=\"pi\">:<\/span> <span class=\"s\">1 - (node_filesystem_files_free \/ node_filesystem_files) &gt;= <\/span><span class=\"m\">0.8<\/span>\r\n        <span class=\"na\">for<\/span><span class=\"pi\">:<\/span> <span class=\"s\">5m<\/span>\r\n        <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">severity<\/span><span class=\"pi\">:<\/span> <span class=\"s\">critical<\/span>\r\n        <span class=\"na\">annotations<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">firing_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">Inode<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">exceeds<\/span> <span class=\"s\">80%\"<\/span>\r\n          <span class=\"na\">resolved_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">Inode<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">falls\"<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"na\">alert<\/span><span class=\"pi\">:<\/span> <span class=\"s\">io_usage_exceeds_80%<\/span>\r\n        <span class=\"c1\"># I\/O\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u3088\u308bCPU\u4f7f\u7528\u7387\u304c80%\u4ee5\u4e0a\u306e\u3082\u306e<\/span>\r\n        <span class=\"na\">expr<\/span><span class=\"pi\">:<\/span> <span class=\"s\">rate(node_disk_io_time_seconds_total[1m]) &gt;= <\/span><span class=\"m\">0.8<\/span>\r\n        <span class=\"na\">for<\/span><span class=\"pi\">:<\/span> <span class=\"s\">5m<\/span>\r\n        <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">severity<\/span><span class=\"pi\">:<\/span> <span class=\"s\">critical<\/span>\r\n        <span class=\"na\">annotations<\/span><span class=\"pi\">:<\/span>\r\n          <span class=\"na\">firing_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">I\/O<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">exceeds<\/span> <span class=\"s\">80%\"<\/span>\r\n          <span class=\"na\">resolved_text<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">[{{<\/span> <span class=\"s\">$labels.env<\/span> <span class=\"s\">}}]<\/span> <span class=\"s\">{{<\/span> <span class=\"s\">$labels.instance<\/span> <span class=\"s\">}}<\/span> <span class=\"s\">I\/O<\/span> <span class=\"s\">usage<\/span> <span class=\"s\">falls\"<\/span>\r\n<\/code><\/pre>\n<h2>\u5176\u4ed6 t\u0101)<\/h2>\n<p>\u987a\u4fbf\u8bf4\u4e00\u4e0b\uff0c\u5728Node Exporter\u4e2d\u65e0\u6cd5\u6355\u6349CPU\u9519\u8bef\u548c\u5185\u5b58\u9519\u8bef\u3002<\/p>\n<h2>\u8bf7\u53c2\u8003<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u30c4\u30fc\u30ebPrometheus\u3092\u4f7f\u3046<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Prometheus \u3067Node\u306e\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b5\u30f3\u30d7\u30eb\u3067\u5b66\u3076\uff01PromQL\u3067\u81ea\u5728\u306b\u30b0\u30e9\u30d5\u3092\u63cf\u3053\u3046 (Prometheus + Grafana)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Prometheus\u30af\u30a8\u30ea\u9053\u5834<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Understanding Machine CPU usage<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">A Deep Dive into Kubernetes Metrics \u2014 Part 2<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Kubernetes\u306b\u304a\u3051\u308b\u30b9\u30c8\u30ec\u30fc\u30b8\u95a2\u9023\u306e\u30e1\u30c8\u30ea\u30af\u30b9\u4e00\u89a7<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u5f55 [\u76ee\u6b21] Prometheus\u3067\u76e3\u8996\u30b7\u30b9\u30c6\u30e0\u3092\u4f5c\u308b with Docker \u603b\u7ed3 \u4ee5\u4e0b\u662f\u7528PromQL\u76d1 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43667","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>\u4f7f\u7528[Prometheus] Node Exporter \u76d1\u63a7CPU\u3001\u5185\u5b58\u548c\u78c1\u76d8 - 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\/\u4f7f\u7528prometheus-node-exporter-\u76d1\u63a7cpu\u3001\u5185\u5b58\u548c\u78c1\u76d8\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528[Prometheus] Node Exporter \u76d1\u63a7CPU\u3001\u5185\u5b58\u548c\u78c1\u76d8\" \/>\n<meta property=\"og:description\" content=\"\u76ee\u5f55 [\u76ee\u6b21] Prometheus\u3067\u76e3\u8996\u30b7\u30b9\u30c6\u30e0\u3092\u4f5c\u308b with Docker \u603b\u7ed3 \u4ee5\u4e0b\u662f\u7528PromQL\u76d1 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528prometheus-node-exporter-\u76d1\u63a7cpu\u3001\u5185\u5b58\u548c\u78c1\u76d8\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-11T23:23:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-04T09:14:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d53e937434c4406cd11a2\/11-0.png\" \/>\n<meta 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