Created
April 30, 2016 09:04
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Sensuで取得したSNMP対応機器の転送量をGrafana経由でモニタリング ref: http://qiita.com/nobuhito/items/85615135f561ce488253
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| { | |
| "checks": { | |
| "snmp_metrics": { | |
| "type": "metric", | |
| "handlers": ["graphite"], | |
| "command": "ruby /etc/sensu/plugins/snmp_metrics.rb --host \"127.0.0.1, localhost\"", | |
| "interval": 15, | |
| "subscribers": [ "sensu" ] | |
| } | |
| } | |
| } |
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| #!/usr/bin/env ruby | |
| require "sensu-plugin/metric/cli" | |
| require "snmp" | |
| require "json" | |
| class SNMPTrafficMetrics < Sensu::Plugin::Metric::CLI::Graphite | |
| option :hosts, | |
| short: "-h HOSTS", | |
| long: "--hosts HOSTS", | |
| default: "localhost,127.0.0.1" | |
| option :community, | |
| short: "-c COMMUNITY", | |
| long: "--community COMMUNITY", | |
| default: "public" | |
| option :sleep, | |
| long: "--sleep SLEEP", | |
| proc: proc {|a| a.to_f}, | |
| default: 1 | |
| option :cache, | |
| long: "--cache", | |
| default: "/tmp/snmp_cache.json" | |
| def oids type | |
| lists = { | |
| "wlan_rx" => "1.3.6.1.4.1.25053.1.2.2.1.1.1.1.1.14", # for Ruckus ZoneDirector | |
| "wlan_tx" => "1.3.6.1.4.1.25053.1.2.2.1.1.1.1.1.16", # for Ruckus ZoneDirector | |
| "lan_rx" => "1.3.6.1.2.1.2.2.1.10", | |
| "lan_tx" => "1.3.6.1.2.1.2.2.1.16", | |
| "name" => "1.3.6.1.2.1.1.5.0", | |
| "port" => "1.3.6.1.2.1.2.2.1.2" | |
| } | |
| lists[type] | |
| end | |
| def get_portname(manager) | |
| name = [] | |
| begin | |
| manager.walk [oids("port")] { |vb|name << vb[0].value} | |
| end | |
| name | |
| end | |
| def get_name(manager) | |
| response = manager.get [oids("name")] | |
| name = nil | |
| begin | |
| response.each_varbind { |vb| name = vb.value } | |
| end | |
| name | |
| end | |
| def get_traffic(manager, type) | |
| ret = {"rx" => [], "tx" => []} | |
| traffic = ["rx", "tx"] | |
| traffic.each do |x| | |
| i = 1 | |
| loop do | |
| oid = oids("#{type}_#{x}") | |
| response = manager.get ["#{oid}.#{i}"] | |
| begin | |
| response.each_varbind { |vb| ret[x][i - 1] = vb.value.to_i } | |
| rescue NoMethodError => e | |
| ret[x] = nil if i == 1 | |
| break | |
| end | |
| i += 1 | |
| end | |
| end | |
| ret = nil if ret["rx"] == nil or ret["tx"] == nil | |
| ret | |
| end | |
| def run | |
| json_file_path = config[:cache] | |
| begin | |
| cache = open(json_file_path) { |io| JSON.load io } | |
| rescue | |
| cache = {} | |
| end | |
| timestamp = Time.now.to_i | |
| threads = [] | |
| config[:hosts].split(/,\s?/).each do |host| | |
| manager = SNMP::Manager.new host: host, community: config[:community] | |
| portname = get_portname manager | |
| name = get_name manager | |
| threads << Thread.new do | |
| type = "wlan" | |
| traffic = get_traffic(manager, type) # wlanを試して | |
| if traffic == nil # wlanがなかったら | |
| type = "lan" # 有線ポート | |
| traffic = get_traffic(manager, type) | |
| end | |
| now = Time.now | |
| traffic_type = ["rx", "tx"] | |
| traffic_type.each do |x| | |
| traffic[x].each_index do |i| | |
| if cache[name]!= nil && cache[name][type] != nil | |
| traffic_value = traffic[x][i] - (cache[name][type]["traffic"][x][i].to_f || 0) | |
| time = now - Time.at(cache[name][type]["time"]) | |
| output "network.#{name.downcase}.snmp.#{x}.#{portname[i]}", (traffic_value / time).round(2), timestamp | |
| else | |
| cache[name] = {} if cache[name] == nil | |
| cache[name][type] = {} | |
| break | |
| end | |
| end | |
| break if cache[name][type] == {} | |
| end | |
| cache[name][type] = {"time" => now.to_i, "traffic" => {"rx" => traffic["rx"], "tx" => traffic["tx"]}} | |
| end | |
| end | |
| threads.each { |thread| thread.join } | |
| open(json_file_path, "w") { |io| JSON.dump(cache, io) } | |
| ok | |
| end | |
| end |
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