2 # Cookbook:: prometheus
3 # Resource:: prometheus_exporter
5 # Copyright:: 2020, OpenStreetMap Foundation
7 # Licensed under the Apache License, Version 2.0 (the "License");
8 # you may not use this file except in compliance with the License.
9 # You may obtain a copy of the License at
11 # https://www.apache.org/licenses/LICENSE-2.0
13 # Unless required by applicable law or agreed to in writing, software
14 # distributed under the License is distributed on an "AS IS" BASIS,
15 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 # See the License for the specific language governing permissions and
17 # limitations under the License.
22 default_action :create
24 property :exporter, :kind_of => String, :name_property => true
25 property :address, :kind_of => String
26 property :port, :kind_of => Integer, :required => [:create]
27 property :listen_switch, :kind_of => String, :default => "web.listen-address"
28 property :listen_type, :kind_of => String, :default => "address"
29 property :user, :kind_of => String, :default => "root"
30 property :command, :kind_of => String
31 property :options, :kind_of => [String, Array]
32 property :environment, :kind_of => Hash, :default => {}
33 property :service, :kind_of => String
34 property :scrape_interval, :kind_of => String
35 property :scrape_timeout, :kind_of => String
36 property :metric_relabel, :kind_of => Array
37 property :register_target, :kind_of => [TrueClass, FalseClass], :default => true
40 systemd_service service_name do
41 after "network-online.target"
42 wants "network-online.target"
43 description "Prometheus #{new_resource.exporter} exporter"
45 user new_resource.user
46 environment new_resource.environment
47 exec_start "#{executable_path} #{new_resource.command} #{executable_options}"
49 protect_system "strict"
51 no_new_privileges true
54 service service_name do
55 action [:enable, :start]
56 subscribes :restart, "systemd_service[#{service_name}]"
59 firewall_rule "accept-prometheus-#{new_resource.exporter}" do
64 dest_ports new_resource.port
65 only_if { node[:prometheus][:mode] == "external" }
68 node.default[:prometheus][:addresses][new_resource.exporter] = listen_address
70 if new_resource.register_target
71 node.default[:prometheus][:exporters][new_resource.port] = {
72 :name => new_resource.exporter,
73 :address => listen_address,
74 :scrape_interval => new_resource.scrape_interval,
75 :scrape_timeout => new_resource.scrape_timeout,
76 :metric_relabel => new_resource.metric_relabel
82 service service_name do
83 action [:disable, :stop]
86 systemd_service service_name do
92 service service_name do
94 only_if { service_exists? }
100 if new_resource.service
101 "prometheus-#{new_resource.service}-exporter"
103 "prometheus-#{new_resource.exporter}-exporter"
108 ::File.exist?("/etc/systemd/system/#{service_name}.service")
112 "/opt/prometheus-exporters/exporters/#{new_resource.exporter}/#{new_resource.exporter}_exporter"
115 def executable_options
116 "--#{new_resource.listen_switch}=#{listen_argument} #{Array(new_resource.options).join(' ')}"
120 case new_resource.listen_type
121 when "address" then listen_address
122 when "url" then "http://#{listen_address}/metrics"
127 if new_resource.address
128 "#{new_resource.address}:#{new_resource.port}"
129 elsif node[:prometheus][:mode] == "wireguard"
130 "[#{node[:prometheus][:address]}]:#{new_resource.port}"
132 "#{node[:prometheus][:address]}:#{new_resource.port}"
138 subscribes :restart, "git[/opt/prometheus-exporters]"