{"id":43532,"date":"2023-05-05T13:18:26","date_gmt":"2023-10-09T04:19:29","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/prometheus-python%e5%ae%a2%e6%88%b7%e7%ab%af%e6%8f%90%e7%a4%ba-%e5%88%9b%e5%bb%ba%e5%a4%9a%e4%b8%aa%e6%8c%87%e6%a0%87%e7%9a%84%e6%96%b9%e6%b3%95\/"},"modified":"2024-04-30T02:45:16","modified_gmt":"2024-04-29T18:45:16","slug":"prometheus-python%e5%ae%a2%e6%88%b7%e7%ab%af%e6%8f%90%e7%a4%ba-%e5%88%9b%e5%bb%ba%e5%a4%9a%e4%b8%aa%e6%8c%87%e6%a0%87%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/prometheus-python%e5%ae%a2%e6%88%b7%e7%ab%af%e6%8f%90%e7%a4%ba-%e5%88%9b%e5%bb%ba%e5%a4%9a%e4%b8%aa%e6%8c%87%e6%a0%87%e7%9a%84%e6%96%b9%e6%b3%95\/","title":{"rendered":"Prometheus Python\u5ba2\u6237\u7aef\u63d0\u793a &#8211; \u521b\u5efa\u591a\u4e2a\u6307\u6807\u7684\u65b9\u6cd5"},"content":{"rendered":"<h1>\u6982\u8ff0<\/h1>\n<p>\u5728Prometheus\u4e2d\uff0c\u6709\u5404\u79cd\u4e0d\u540c\u7684\u5bfc\u51fa\u5668\uff0c\u5982\u679c\u60f3\u8981\u521b\u5efaAPI\u5e76\u751f\u6210\u81ea\u5b9a\u4e49\u7684\u5ea6\u91cf\u6570\u636e\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u5ba2\u6237\u7aef\u5e93\u3002<\/p>\n<ul class=\"post-ul\">https:\/\/prometheus.io\/docs\/instrumenting\/clientlibs\/<\/ul>\n<p>\u6240\u4ee5\u5728Python\u4e2d\u4e5f\u6709\u76f8\u5e94\u7684\u5e93\uff0c\u8fd9\u5c31\u662f\u5b83\u3002<br \/>\n\u57fa\u672c\u4e0a\uff0c\u53ea\u9700\u4f7f\u7528Gauge\u5373\u53ef\u521b\u5efa\uff0c\u6240\u4ee5\u4ee3\u7801\u5927\u81f4\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">#!\/usr\/bin\/env python3\r\n# import os\r\n<\/span><span class=\"kn\">import<\/span> <span class=\"nn\">sys<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">re<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">logging<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">getLogger<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">prometheus_client<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">generate_latest<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">prometheus_client<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">Gauge<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">prometheus_client<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">REGISTRY<\/span>\r\n<span class=\"n\">logger<\/span> <span class=\"o\">=<\/span> <span class=\"n\">getLogger<\/span><span class=\"p\">(<\/span><span class=\"n\">__name__<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">MetricsGenetator<\/span><span class=\"p\">(<\/span><span class=\"nb\">object<\/span><span class=\"p\">):<\/span>\r\n\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">__init__<\/span><span class=\"p\">(<\/span><span class=\"bp\">self<\/span><span class=\"p\">):<\/span>\r\n        <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">g<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Gauge<\/span><span class=\"p\">(<\/span><span class=\"s\">'my_inprogress_requests'<\/span><span class=\"p\">,<\/span> <span class=\"s\">'Description of gauge'<\/span><span class=\"p\">)<\/span>\r\n\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">run<\/span><span class=\"p\">(<\/span><span class=\"bp\">self<\/span><span class=\"p\">):<\/span>\r\n        <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">g<\/span><span class=\"p\">.<\/span><span class=\"n\">inc<\/span><span class=\"p\">()<\/span>      <span class=\"c1\"># Increment by 1\r\n<\/span>        <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">g<\/span><span class=\"p\">.<\/span><span class=\"n\">dec<\/span><span class=\"p\">(<\/span><span class=\"mi\">10<\/span><span class=\"p\">)<\/span>    <span class=\"c1\"># Decrement by given value\r\n<\/span>        <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">g<\/span><span class=\"p\">.<\/span><span class=\"nb\">set<\/span><span class=\"p\">(<\/span><span class=\"mf\">4.2<\/span><span class=\"p\">)<\/span>   <span class=\"c1\"># Set to a given value\r\n<\/span>        <span class=\"n\">metrics<\/span> <span class=\"o\">=<\/span> <span class=\"n\">generate_latest<\/span><span class=\"p\">(<\/span><span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">registry<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">metrics<\/span>\r\n\r\n\r\n\r\n<span class=\"k\">def<\/span> <span class=\"nf\">main<\/span><span class=\"p\">():<\/span>\r\n    <span class=\"n\">app<\/span> <span class=\"o\">=<\/span> <span class=\"n\">MetricsGenerator<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">metrics<\/span> <span class=\"o\">=<\/span> <span class=\"n\">app<\/span><span class=\"p\">.<\/span><span class=\"n\">run<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">print<\/span><span class=\"p\">(<\/span><span class=\"n\">metrics<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">if<\/span> <span class=\"n\">__name__<\/span> <span class=\"o\">==<\/span> <span class=\"s\">'__main__'<\/span><span class=\"p\">:<\/span>\r\n    <span class=\"n\">main<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u6bcf\u6b21\u90fd\u6267\u884c\u8fd9\u4e2a\u64cd\u4f5c\u7684\u8bdd\u5c31\u6ca1\u95ee\u9898\u4e86\uff0c\u4f46\u662f\u5982\u679c\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u4f20\u9012\u7ed9self.g.set\u7684\u503c\u4e3a4.2\u65f6\uff0c\u5982\u679c\u5b83\u88ab\u4f7f\u7528\u5728\u4ee5\u4e0b\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4f1a\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">snmpget cpu_usage from \u306e\u3088\u3046\u306b\u5bfe\u8c61\u304c\u5206\u304b\u308c\u308b\u3060\u3051\u3067\u30b3\u30fc\u30c9\u81ea\u4f53\u306f\u4f7f\u3044\u56de\u3055\u308c\u3066\u3044\u308b\u5834\u5408<\/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\">\u4e0a\u8a18\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u304c\u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u3055\u308c\u3066\u304a\u308a\u5e38\u6642\u30d7\u30ed\u30bb\u30b9\u3068\u3057\u3066\u306f\u8d77\u52d5\u3057\u7d9a\u3051\u3066\u3044\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u5024\u304c\u53d6\u5f97\u3067\u304d\u305f\u3068\u304d\u306f\u8fd4\u3059\u304c\u3001\u53d6\u5f97\u3067\u304d\u306a\u3044\u6642\u306b\u30c0\u30df\u30fc\u5024\u3092\u5165\u308c\u306a\u3044<\/ul>\n<p>\u5177\u4f53\u6765\u8bf4\uff0c\u53d1\u751f\u4ec0\u4e48\u4e8b\u60c5\u5462\uff1f<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u4eceA\u670d\u52a1\u5668\u83b7\u53d6CPU\u4f7f\u7528\u60c5\u51b5\u4e3a50\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u4eceB\u670d\u52a1\u5668\u83b7\u53d6CPU\u4f7f\u7528\u60c5\u51b5\u65f6\u5931\u8d25\uff08None\uff09\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>\u5982\u679c\u8fd4\u56deNone\uff0c\u5219\u8df3\u8fc7self.g.set()\u3002<\/p>\n<p>\u8fd9\u6837\uff0cB\u670d\u52a1\u5668\u7684CPU\u4f7f\u7528\u60c5\u51b5\u5c06\u8fd4\u56de\u4e3a50\u3002<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u7531\u4e8e\u5148\u524d\u7684\u503c\u88ab\u76f4\u63a5\u4f7f\u7528\uff0c\u6240\u4ee5\u5728\u4e0a\u8ff0\u7684\u7ed3\u6784\u60c5\u51b5\u4e0b\uff0c\u53ea\u9700\u660e\u786e\u6dfb\u52a0CPU usage = None\u7b49\u5185\u5bb9\u5373\u53ef\u3002<br \/>\n\u4f46\u662f\uff0c\u5982\u679cA\u670d\u52a1\u5668\u548cB\u670d\u52a1\u5668\u7684CPU\u6570\u91cf\u662f\u52a8\u6001\u53d8\u5316\u7684\uff0c\u4ee5\u7c7b\u4f3c\u4e8efor cpu in cpu_num:\u7684\u5f62\u5f0f\u52a8\u6001\u751f\u6210\u6807\u7b7e\u7684\u60c5\u51b5\u4e0b\uff0c\u65e0\u6cd5\u4f7f\u7528\u865a\u62df\u503c\u3002<\/p>\n<h2>&#8220;\u600e\u4e48\u529e\u5462?&#8221;<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528\u57282019\u5e749\u6708\u65b0\u63d0\u4ea4\u7684CollectorRegistry\u7684target_info\uff0c\u73b0\u5728\u53ef\u4ee5\u5b9e\u73b0\u5c06Registry\u5206\u9694\u5f00\u6765\u3002<br \/>\n\u5c31\u50cf\u8fd9\u6837\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">#!\/usr\/bin\/env python3\r\n# import os\r\n<\/span><span class=\"kn\">import<\/span> <span class=\"nn\">sys<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">re<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">click<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">logging<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">getLogger<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">prometheus_client<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">generate_latest<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">prometheus_client<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">Gauge<\/span>\r\n<span class=\"c1\"># from prometheus_client import REGISTRY\r\n<\/span><span class=\"kn\">from<\/span> <span class=\"nn\">prometheus_client.core<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">CollectorRegistry<\/span>\r\n<span class=\"n\">logger<\/span> <span class=\"o\">=<\/span> <span class=\"n\">getLogger<\/span><span class=\"p\">(<\/span><span class=\"n\">__name__<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">MetricsGenetator<\/span><span class=\"p\">(<\/span><span class=\"nb\">object<\/span><span class=\"p\">):<\/span>\r\n\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">__init__<\/span><span class=\"p\">(<\/span><span class=\"bp\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">target<\/span><span class=\"p\">):<\/span>\r\n        <span class=\"n\">registry<\/span> <span class=\"o\">=<\/span> <span class=\"n\">CollectorRegistry<\/span><span class=\"p\">(<\/span><span class=\"n\">target_info<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"s\">\"target\"<\/span><span class=\"p\">:<\/span> <span class=\"n\">server_name<\/span><span class=\"p\">})<\/span>\r\n        <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">g<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Gauge<\/span><span class=\"p\">(<\/span>\r\n                     <span class=\"s\">'my_inprogress_requests'<\/span><span class=\"p\">,<\/span>\r\n                     <span class=\"s\">'Description of gauge'<\/span><span class=\"p\">,<\/span>\r\n                     <span class=\"n\">registry<\/span><span class=\"o\">=<\/span><span class=\"n\">registry<\/span><span class=\"p\">)<\/span>\r\n\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">run<\/span><span class=\"p\">(<\/span><span class=\"bp\">self<\/span><span class=\"p\">):<\/span>\r\n        <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">g<\/span><span class=\"p\">.<\/span><span class=\"n\">inc<\/span><span class=\"p\">()<\/span>      <span class=\"c1\"># Increment by 1\r\n<\/span>        <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">g<\/span><span class=\"p\">.<\/span><span class=\"n\">dec<\/span><span class=\"p\">(<\/span><span class=\"mi\">10<\/span><span class=\"p\">)<\/span>    <span class=\"c1\"># Decrement by given value\r\n<\/span>        <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">g<\/span><span class=\"p\">.<\/span><span class=\"nb\">set<\/span><span class=\"p\">(<\/span><span class=\"mf\">4.2<\/span><span class=\"p\">)<\/span>   <span class=\"c1\"># Set to a given value\r\n<\/span>        <span class=\"n\">metrics<\/span> <span class=\"o\">=<\/span> <span class=\"n\">generate_latest<\/span><span class=\"p\">(<\/span><span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">registry<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">metrics<\/span>\r\n\r\n\r\n<span class=\"o\">@<\/span><span class=\"n\">click<\/span><span class=\"p\">.<\/span><span class=\"n\">command<\/span><span class=\"p\">()<\/span>\r\n<span class=\"o\">@<\/span><span class=\"n\">click<\/span><span class=\"p\">.<\/span><span class=\"n\">option<\/span><span class=\"p\">(<\/span><span class=\"s\">'-h'<\/span><span class=\"p\">,<\/span> <span class=\"s\">'--hostname'<\/span><span class=\"p\">,<\/span> <span class=\"n\">required<\/span><span class=\"o\">=<\/span><span class=\"bp\">True<\/span><span class=\"p\">,<\/span> <span class=\"nb\">type<\/span><span class=\"o\">=<\/span><span class=\"nb\">str<\/span><span class=\"p\">,<\/span>\r\n              <span class=\"n\">default<\/span><span class=\"o\">=<\/span><span class=\"s\">\"localhost\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">help<\/span><span class=\"o\">=<\/span><span class=\"s\">\"get metrics from hostname. (default: localhost)\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"k\">def<\/span> <span class=\"nf\">cli<\/span><span class=\"p\">():<\/span>\r\n    <span class=\"n\">app<\/span> <span class=\"o\">=<\/span> <span class=\"n\">MetricsGenerator<\/span><span class=\"p\">(<\/span><span class=\"n\">target<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">metrics<\/span> <span class=\"o\">=<\/span> <span class=\"n\">app<\/span><span class=\"p\">.<\/span><span class=\"n\">run<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">print<\/span><span class=\"p\">(<\/span><span class=\"n\">metrics<\/span><span class=\"p\">)<\/span>\r\n\r\n\r\n<span class=\"k\">def<\/span> <span class=\"nf\">main<\/span><span class=\"p\">():<\/span>\r\n    <span class=\"n\">cli<\/span><span class=\"p\">()<\/span>\r\n\r\n\r\n<span class=\"k\">if<\/span> <span class=\"n\">__name__<\/span> <span class=\"o\">==<\/span> <span class=\"s\">'__main__'<\/span><span class=\"p\">:<\/span>\r\n    <span class=\"n\">main<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8ff0 \u5728Prometheus\u4e2d\uff0c\u6709\u5404\u79cd\u4e0d\u540c\u7684\u5bfc\u51fa\u5668\uff0c\u5982\u679c\u60f3\u8981\u521b\u5efaAPI\u5e76\u751f\u6210\u81ea\u5b9a\u4e49\u7684\u5ea6\u91cf\u6570\u636e\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u5ba2\u6237 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43532","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>Prometheus Python\u5ba2\u6237\u7aef\u63d0\u793a - \u521b\u5efa\u591a\u4e2a\u6307\u6807\u7684\u65b9\u6cd5 - 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\/prometheus-python\u5ba2\u6237\u7aef\u63d0\u793a-\u521b\u5efa\u591a\u4e2a\u6307\u6807\u7684\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prometheus Python\u5ba2\u6237\u7aef\u63d0\u793a - \u521b\u5efa\u591a\u4e2a\u6307\u6807\u7684\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"\u6982\u8ff0 \u5728Prometheus\u4e2d\uff0c\u6709\u5404\u79cd\u4e0d\u540c\u7684\u5bfc\u51fa\u5668\uff0c\u5982\u679c\u60f3\u8981\u521b\u5efaAPI\u5e76\u751f\u6210\u81ea\u5b9a\u4e49\u7684\u5ea6\u91cf\u6570\u636e\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u5ba2\u6237 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/prometheus-python\u5ba2\u6237\u7aef\u63d0\u793a-\u521b\u5efa\u591a\u4e2a\u6307\u6807\u7684\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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