{"id":43625,"date":"2023-12-09T21:07:58","date_gmt":"2023-08-03T00:18:33","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8promql%e9%a2%84%e6%b5%8b%e5%ad%98%e5%82%a8%e5%ae%b9%e9%87%8f%e3%80%82\/"},"modified":"2024-05-04T12:51:41","modified_gmt":"2024-05-04T04:51:41","slug":"%e4%bd%bf%e7%94%a8promql%e9%a2%84%e6%b5%8b%e5%ad%98%e5%82%a8%e5%ae%b9%e9%87%8f%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8promql%e9%a2%84%e6%b5%8b%e5%ad%98%e5%82%a8%e5%ae%b9%e9%87%8f%e3%80%82\/","title":{"rendered":"\u4f7f\u7528PromQL\u9884\u6d4b\u5b58\u50a8\u5bb9\u91cf"},"content":{"rendered":"<h1>\u9884\u6d4b\u7ebf\u6027\u51fd\u6570(v \u8303\u56f4\u5411\u91cf\uff0ct \u6807\u91cf)<\/h1>\n<p>\u5982\u679c\u60f3\u9884\u6d4b\u5b58\u50a8\u5bb9\u91cf\u662f\u5426\u4f1a\u8017\u5c3d\uff0c\u53ef\u4ee5\u4f7f\u7528PromQL\u4e2d\u7684predict_linear\u51fd\u6570(predict_linear(v range-vector, t scalar))\u3002\u8be5\u51fd\u6570\u53ef\u4ee5\u6839\u636e\u5f53\u524d\u65f6\u95f4\u548c\u7ecf\u8fc7\u7684\u65f6\u95f4t\uff0c\u5229\u7528\u7ebf\u6027\u56de\u5f52\u8ba1\u7b97\u51fa\u65f6\u95f4\u5e8f\u5217\u6570\u636ev\u7684\u9884\u6d4b\u503c\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\u53ea\u6709Gauge\u7c7b\u578b\u624d\u80fd\u4f7f\u7528v\u5b57\u6bb5\u3002\u5982\u679c\u8981\u7528\u4e8eCounter\u7c7b\u578b\u7684\u6307\u6807\uff0c\u8bf7\u5148\u7528rate()\u51fd\u6570\u8fdb\u884c\u5305\u88c5\u3002<\/p>\n<h2>\u5177\u4f53\u4e3e\u4f8b<\/h2>\n<p>\u8fd9\u662f\u4e00\u4e2a\u4ece\u6700\u8fd12\u5c0f\u65f6\u7684\u6570\u636e\u4e2d\u9884\u6d4b24\u5c0f\u65f6\u540e\u6bcf\u4e2akubelet_volume_stats_available_bytes\u503c\u7684\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code>predict_linear(kubelet_volume_stats_available_bytes[2h], 24*2600)\r\n<\/code><\/pre>\n<p>\u5177\u4f53\u7684\u306a\u8b66\u5831\u898f\u5247\u3068\u3057\u3066\u306f\u3001\u3053\u306e\u5f0f\u306e\u5024\u304c0\u4ee5\u4e0b\u306b\u306a\u308b\u3068\u3001\u30a2\u30e9\u30fc\u30c8\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u3059\u308b\u3068\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u307e\u305f\u3001kubelet_volume_stats_capacity_bytes\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u6700\u5927\u5bb9\u91cf\u306b\u5bfe\u3059\u308b\u5272\u5408\u3067\u8b66\u5831\u898f\u5247\u3092\u4f5c\u6210\u3059\u308b\u306e\u3082\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<h2>\u8bf7\u63d0\u4f9b\u7684\u4e2d\u6587\u7248\u53c2\u8003\u3002<\/h2>\n<ul class=\"post-ul\">https:\/\/prometheus.io\/docs\/prometheus\/latest\/querying\/functions\/#predict_linear<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u9884\u6d4b\u7ebf\u6027\u51fd\u6570(v \u8303\u56f4\u5411\u91cf\uff0ct \u6807\u91cf) \u5982\u679c\u60f3\u9884\u6d4b\u5b58\u50a8\u5bb9\u91cf\u662f\u5426\u4f1a\u8017\u5c3d\uff0c\u53ef\u4ee5\u4f7f\u7528PromQL\u4e2d\u7684predict_ [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43625","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) - 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