{"id":43523,"date":"2023-04-03T00:38:37","date_gmt":"2022-12-03T05:42:55","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8snmp%e8%bf%9b%e8%a1%8c%e7%9b%91%e8%a7%86\/"},"modified":"2024-01-15T11:42:49","modified_gmt":"2024-01-15T03:42:49","slug":"%e4%bd%bf%e7%94%a8snmp%e8%bf%9b%e8%a1%8c%e7%9b%91%e8%a7%86","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8snmp%e8%bf%9b%e8%a1%8c%e7%9b%91%e8%a7%86\/","title":{"rendered":"\u4f7f\u7528SNMP\u8fdb\u884c\u76d1\u89c6"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u4f7f\u7528SNMP\u8fdb\u884c\u76d1\u63a7\u662f\u4ece\u5f88\u4e45\u4ee5\u524d\u5c31\u5f00\u59cb\u4e86\u7684\uff0c<br \/>\nMRTG\u3001Munin\u3001Cacti\u3001Zabbix\u7b49\u7b49\uff0c\u6709\u5f88\u591a\u5de5\u5177\u53ef\u4ee5\u9009\u62e9\u3002<br \/>\n\u4f46\u6700\u8fd1\u6d41\u884c\u7684\u5f00\u6e90\u8f6f\u4ef6\u76d1\u63a7\u5de5\u5177\u5f88\u53d7\u6b22\u8fce\uff0c\u6211\u60f3\u5c1d\u8bd5\u4e00\u4e0b\uff0c\u770b\u770b\u80fd\u5426\u8f7b\u677e\u5730\u5b9e\u73b0\u76d1\u63a7\u3002<\/p>\n<p>\u6211\u5bf9collectd\u3001fluentd\u548cprometheus\u8fdb\u884c\u4e86\u6bd4\u8f83\u3002<\/p>\n<p>\u7531\u4e8eCollectd\u548cFluentd\u7528\u4e8e\u6570\u636e\u8def\u7531\uff0c\u6240\u4ee5\u5047\u5b9a\u4f7f\u7528Graphite\u3001InfluxDB\u7b49\u4f5c\u4e3a\u6570\u636e\u5b58\u50a8\u3002\u4f46\u662f\u7531\u4e8e\u8fd9\u4e9b\u914d\u7f6e\u76ee\u524d\u5e76\u4e0d\u76f8\u5173\uff0c\u6240\u4ee5\u6ca1\u6709\u5728\u6b64\u5904\u63d0\u53ca\u3002<\/p>\n<h2>\u6536\u96c6\u6570\u636e<\/h2>\n<p>\u63d2\u4ef6\u53ef\u4ee5\u505a\u5230\u3002<br \/>\n\u8bbe\u7f6e\u53ef\u4ee5\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n<pre class=\"post-pre\"><code>LoadPlugin snmp\r\n&lt;Plugin snmp&gt;\r\n  &lt;Data \"dataname\"&gt;\r\n    Type \"tipename\"\r\n    Table true\r\n    Instance \"IF-MIB::ifDescr\"\r\n    Values \"IF-MIB::ifInOctets\" \"IF-MIB::ifOutOctets\"\r\n  &lt;\/Data&gt;\r\n  &lt;Data \"dataname\"&gt;\r\n    Type \"users\" \r\n    Table false\r\n    Instance \"\"\r\n    Shift -1\r\n    Values \"HOST-RESOURCES-MIB::hrSystemNumUsers.0\"\r\n  &lt;\/Data&gt;\r\n  &lt;Host \"Hostname\"&gt;\r\n    Address \"192.168.1.1\"\r\n    Version 2\r\n    Interval 60\r\n    Community \"another_string\"\r\n    Collect \"dataname\" \"dataname\" \"dataname\"\r\n  &lt;\/Host&gt;\r\n&lt;\/Plugin&gt;\r\n<\/code><\/pre>\n<p>\u63d2\u4ef6\u52a0\u8f7d\uff0c<br \/>\n\u6570\u636e\u5b9a\u4e49\uff0c\u5982\u679c\u662f\u7d22\u5f15\u7684\u8bdd\uff0c\u8981\u4f7f\u7528\u5728 Instance \u4e2d\u6307\u5b9a\u7684\u5185\u5bb9\u4f5c\u4e3a\u7d22\u5f15\u540d\u79f0\u3002<br \/>\n\u4e3b\u673a\u5b9a\u4e49\uff08\u6307\u5b9a\u8981\u6536\u96c6\u7684\u6570\u636e\uff09\u3002<br \/>\n\u7531\u4e8e\u6570\u636e\u5b9a\u4e49\u548c\u4e3b\u673a\u5b9a\u4e49\u662f\u5206\u5f00\u7684\uff0c\u6240\u4ee5\u8bbe\u7f6e\u4e0d\u4f1a\u53d8\u5f97\u5f88\u590d\u6742\u3002<br \/>\n\u4f46\u662f\uff0c\u65e0\u6cd5\u5bf9\u6570\u636e\u5b9a\u4e49\u8fdb\u884c\u5206\u7ec4\uff0c\u6240\u4ee5\u4e3b\u673a\u7684\u6536\u96c6\u53ef\u80fd\u4f1a\u53d8\u5f97\u975e\u5e38\u5197\u957f\u3002<\/p>\n<h2>Fluentd \u6d41\u7545\u65e5\u5fd7\u7ba1\u7406\u5de5\u5177<\/h2>\n<p>\u5728\u63d2\u4ef6\u4e2d\u53ef\u4ee5\u8fdb\u884c\u9002\u914d\u3002<br \/>\n\u8bbe\u7f6e\u53ef\u4ee5\u8c03\u6574\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;source&gt;\r\n  type snmp\r\n  tag snmp.hostname\r\n  host \"192.168.1.1\"\r\n  Community \"another_string\"\r\n  mib ifDescr, ifInOctets, ifOutOctets\r\n  method_type walk\r\n  polling_time 1\r\n  out_executor \"\/path\/of\/exec.rb\"\r\n&lt;\/source&gt;\r\n&lt;source&gt;\r\n  type snmp\r\n  tag snmp.hostname\r\n  host \"192.168.1.1\"\r\n  Community \"another_string\"\r\n  mib \"hrSystemNumUsers.0\"\r\n  method_type get\r\n&lt;\/source&gt;\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u8981\u5bf9\u4e3b\u673a\u540d\u548c\u6570\u636e\u8fdb\u884c\u5b9a\u4e49\u8bbe\u7f6e\uff0c\u6240\u4ee5\u5f53\u8981\u6536\u96c6\u7684\u6570\u636e\u548c\u4e3b\u673a\u6570\u91cf\u589e\u591a\u65f6\uff0c\u6e90\u5b9a\u4e49\u4f1a\u4e0d\u65ad\u589e\u52a0\uff0c\u8fd9\u5f88\u9ebb\u70e6\u3002\u5982\u679c\u4ec0\u4e48\u90fd\u4e0d\u505a\uff0c\u6536\u96c6\u5230\u7684\u6570\u636e\u4f1a\u4ee5Value={Name=hoge,Value=fuga}\u8fd9\u6837\u7684\u5f62\u5f0f\u4f20\u9001\uff0c\u6240\u4ee5\u53ef\u80fd\u9700\u8981\u51c6\u5907exec.rb\u8fdb\u884c\u5904\u7406\uff0c\u5426\u5219\u4f1a\u5f88\u9ebb\u70e6\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u6211\u5c1d\u8bd5\u5c06\u63a5\u53e3\u52a0\u5de5\u6210 ifDescr.ifInOctets=value\uff0cifDescr.ifOutOctets=value \u7684\u8f93\u51fa\u7ed3\u679c\u3002<\/p>\n<pre class=\"post-pre\"><code>module Fluent\r\n  class SnmpInput\r\n    def out_exec manager, opts={}\r\n      manager.walk(opts[:mib]) do |row|\r\n        time = Time.now.to_i\r\n        time = time - time  % 5\r\n        record = {}\r\n        data = {}\r\n        row.each do |vb|\r\n          data[\"name\"] = vb.value.to_s if vb.name.to_s =~ \/Descr\/\r\n          data[\"InOctets\"] = vb.value.to_s if vb.name.to_s =~ \/InOctets\/\r\n          data[\"OutOctets\"] = vb.value.to_s if vb.name.to_s =~ \/OutOctets\/\r\n        end\r\n        if data.has_key?(\"name\")\r\n          record[\"#{data['name']}.InOctets\"] = data[\"InOctets\"] if data.has_key?(\"InOctets\")\r\n          record[\"#{data['name']}.OutOctets\"] = data[\"OutOctets\"] if data.has_key?(\"OutOctets\")\r\n        end\r\n        if record\r\n          router.emit opts[:tag], time, record\r\n        end\r\n      end\r\n    end\r\n  end\r\nend\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u6211\u4eec\u53ea\u5173\u6ce8\u503c\uff0c\u4e0d\u7528\u62c5\u5fc3\u6536\u96c6\u6570\u636e\u7c7b\u578b\u662f\u5426\u662f\u8ba1\u6570\u5668\uff0c\u6240\u4ee5\u5982\u679c\u80fd\u8fdb\u884c\u5dee\u5206\u8ba1\u7b97\uff0c\u90a3\u4e48\u9700\u8981\u4f7f\u7528\u53e6\u5916\u7684fluentd\u7b5b\u9009\u5668\u6216\u8005\u6570\u636e\u5b58\u50a8\u8fdb\u884c\u5904\u7406\uff0c\u7136\u540e\u5c06\u5176\u4f5c\u4e3a\u8ba1\u6570\u5668\u503c\u8f93\u5165\u3002<\/p>\n<h2>\u666e\u7f57\u7c73\u4fee\u65af<\/h2>\n<p>\u53ef\u4ee5\u4f7f\u7528Exporter\u8fdb\u884c\u5904\u7406\u3002<br \/>\n\u914d\u7f6e\u5206\u522b\u7531snmp_exporter\u548cPrometheus\u8fdb\u884c\u3002<br \/>\n\u6570\u636e\u5b9a\u4e49\u7531snmp_exporter\u5904\u7406\uff0c\u8f6e\u8be2\u8bbe\u7f6e\u7531Prometheus\u5904\u7406\u3002<\/p>\n<pre class=\"post-pre\"><code>specialnode:\r\n   version: 2\r\n   auth:\r\n      community: \"another_string\"\r\n   walk:\r\n      - 1.3.6.1.2.1.2\r\n      - 1.3.6.1.2.1.25.1.5\r\n   metrics:\r\n      - name: ifInOctets\r\n        oid: 1.3.6.1.2.1.2.2.1.10 \r\n        indexes:\r\n          - labelname: ifDescr\r\n            type: Integer32\r\n        lookups:\r\n          - labelname: ifDescr\r\n            oid: 1.3.6.1.2.1.2.2.1.2\r\n      - name: ifOutOctets\r\n        oid: 1.3.6.1.2.1.2.2.1.16 \r\n        indexes:\r\n          - labelname: ifDescr\r\n            type: Integer32\r\n        lookups:\r\n          - labelname: ifDescr\r\n            oid: 1.3.6.1.2.1.2.2.1.2\r\n      - name: hrSystemNumUsers\r\n        oid: 1.3.6.1.2.1.25.1.5 \r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662fsnmp_exporter\u7684\u6570\u636e\u5b9a\u4e49\u3002<br \/>\n\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f7f\u7528\u540d\u4e3aspecialnode\u7684\u540d\u79f0\u8fdb\u884c\u4e86\u4e00\u4e2a\u5b9a\u4e49\u3002<\/p>\n<p>\u5728\u8fd9\u4e2a\u72b6\u6001\u4e0b\uff0c\u8fd0\u884csnmp_exporter\uff0c<br \/>\n\u4f7f\u7528curl\u547d\u4ee4&#8221;curl &#8220;http:\/\/snmp_exporterhost:9116\/snmp?targer=hostname&amp;module=specialnode&#8221;<br \/>\n\u53ef\u4ee5\u770b\u5230\u53ef\u4ee5\u6355\u83b7\u5230\u6570\u636e\u3002<\/p>\n<pre class=\"post-pre\"><code>scrape_configs:\r\n  - job_name: 'snmp'\r\n    scrape_interval: 60s\r\n    target_groups:\r\n      - targets:\r\n        - 192.168.1.1\r\n    metrics_path: \/snmp\r\n    params:\r\n      module: [specialnode]\r\n    relabel_configs:\r\n      - source_labels: [__address__]\r\n        target_label: __param_target\r\n      - source_labels: [__param_target]\r\n        target_label: instance\r\n      - target_label: __address__\r\n        replacement: 127.0.0.1:9116\r\n<\/code><\/pre>\n<p>\u5728 Prometheus \u7684\u4e00\u4fa7\uff0c\u6211\u4eec\u5c06\u5176\u6ce8\u518c\u4e3a\u4f5c\u4e1a\uff0c\u5e76\u5b9a\u671f\u4ece Prometheus \u524d\u5f80 snmp_exporter \u8fdb\u884c\u6570\u636e\u6536\u96c6\u3002<br \/>\n\u4e0e fluentd \u7c7b\u4f3c\uff0cPrometheus \u5bf9\u4e8e\u8ba1\u6570\u5668\u6570\u636e\u65e0\u6cd5\u76f4\u63a5\u8fdb\u884c\u5dee\u5206\u8ba1\u7b97\u7b49\u64cd\u4f5c\uff0c\u56e0\u6b64\u9700\u8981\u8fdb\u884c\u5904\u7406\u3002<br \/>\n\u4f46\u662f\uff0c\u7531\u4e8e\u6211\u8fd8\u6ca1\u6709\u8fdb\u884c\u8fc7\u76f8\u5173\u7814\u7a76\uff0c\u6240\u4ee5\u4e0d\u6e05\u695a\u8fd9\u65b9\u9762\u662f\u5426\u4f1a\u5f88\u9ebb\u70e6\u3002<\/p>\n<h3>\u5728Prometheus\u4e2d\u8fdb\u884c\u5dee\u5206\u8ba1\u7b97<\/h3>\n<p>\u5728Prometheus\u4e2d\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u540d\u4e3arate\u7684\u805a\u5408\u51fd\u6570\u4f5c\u4e3a\u5dee\u5206\u8ba1\u7b97\u65b9\u6cd5\u3002<br \/>\n\u6839\u636e\u4e0a\u8ff0\u914d\u7f6e\uff0c\u6536\u96c6\u5230\u7684\u6570\u636e\u5305\u62ec\u6bcf60\u79d2\u7684ifInOctets\u7b49\u5185\u5bb9\uff0c<br \/>\n\u5982\u679c\u5728Graph\u7684\u8868\u8fbe\u5f0f\u4e2d\u5199\u5165rate(IfInOctets[5m])\uff0c\u5219\u4f1a\u663e\u793a5\u5206\u949f\u5185\u7684\u5dee\u5206\u3002<br \/>\n\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u6dfb\u52a0\u8be5\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code>rule_files:\r\n  - prometheus.rule\r\n<\/code><\/pre>\n<p>\u5728\u6587\u4ef6(prometheus.rule)\u4e2d\u8bb0\u5f55\u5e76\u63cf\u8ff0\u6536\u96c6\u89c4\u5219\u3002<\/p>\n<pre class=\"post-pre\"><code>ifInOctets_5min_rate = rate(ifInOctets[5m])\r\n<\/code><\/pre>\n<p>\u5982\u679c\u8981\u8bb0\u5f55\uff0c\u5c06\u4ee5 ifInOctets_5min_rate \u4e3a\u540d\u79f0\u4fdd\u5b585\u5206\u949f\u7684\u5dee\u5206\u503c\u3002<br \/>\n\u7531\u4e8e\u8ba1\u7b97\u7387\u9700\u8981\u4e24\u4e2a\u6570\u636e\uff0c\u6240\u4ee5\u5982\u679c\u8981\u8ba1\u7b971\u5206\u949f\u7684\u5dee\u5206\u503c\uff0c\u9700\u8981\u8fdb\u884c\u4e00\u4e9b\u8c03\u6574\uff0c\u4f8b\u5982\u5c06 scrape_interval \u8bbe\u4e3a30\u79d2\u3002<\/p>\n<pre class=\"post-pre\"><code>ifInbps_5min_average = rate(ifInOctets[5m])*8\/300\r\n<\/code><\/pre>\n<p>\u6211\u4eec\u4e5f\u53ef\u4ee5\u8fd9\u6837\u8ba1\u7b97bps\u3002<\/p>\n<h1>\u7ed3\u5c3e<\/h1>\n<p>\u6211\u5df2\u7ecf\u786e\u8ba4\u4e86\u4f7f\u7528SNMP\u8fdb\u884c\u76d1\u89c6\u6240\u9700\u7684\u8bbe\u7f6e\u5dee\u5f02\u3002\u5c31\u8bbe\u7f6e\u6587\u4ef6\u7684\u7f16\u5199\u800c\u8a00\uff0c\u4ec5\u4f7f\u7528fluentd\u597d\u50cf\u4e0d\u592a\u9002\u5408\u8fd9\u4e2a\u7528\u9014\uff0c\u611f\u89c9\u6709\u4e9b\u9ebb\u70e6\u3002\u4e0d\u7ba1\u600e\u6837\uff0c\u5982\u679c\u6709\u4eba\u8bf4\u6211\u4eec\u4f1a\u521b\u5efa\u8fd9\u6837\u7684\u751f\u6210\u5668\uff0c\u90a3\u5c31\u65e0\u8bdd\u53ef\u8bf4\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u4f7f\u7528SNMP\u8fdb\u884c\u76d1\u63a7\u662f\u4ece\u5f88\u4e45\u4ee5\u524d\u5c31\u5f00\u59cb\u4e86\u7684\uff0c MRTG\u3001Munin\u3001Cacti\u3001Zabbix\u7b49\u7b49\uff0c\u6709\u5f88\u591a [&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-43523","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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