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
30 property :group, :kind_of => String
31 property :command, :kind_of => String
32 property :options, :kind_of => [String, Array]
33 property :environment, :kind_of => Hash, :default => {}
34 property :protect_proc, String
35 property :proc_subset, String
36 property :capability_bounding_set, [String, Array]
37 property :ambient_capabilities, [String, Array]
38 property :private_devices, [true, false]
39 property :private_users, [true, false]
40 property :protect_clock, [true, false]
41 property :restrict_address_families, [String, Array]
42 property :memory_deny_write_execute, [true, false]
43 property :remove_ipc, [true, false]
44 property :system_call_filter, [String, Array]
45 property :service, :kind_of => String
46 property :labels, :kind_of => Hash, :default => {}
47 property :scrape_interval, :kind_of => String
48 property :scrape_timeout, :kind_of => String
49 property :metric_relabel, :kind_of => Array
50 property :register_target, :kind_of => [TrueClass, FalseClass], :default => true
51 property :ssh, [true, false]
54 if new_resource.ssh && new_resource.user.nil?
55 keys = data_bag_item("prometheus", "keys")
57 directory "/var/lib/private/prometheus/#{new_resource.exporter}-exporter" do
62 file "/var/lib/private/prometheus/#{new_resource.exporter}-exporter/id_rsa" do
63 content keys["ssh"].join("\n")
67 cookbook_file "/var/lib/private/prometheus/#{new_resource.exporter}-exporter/id_rsa.pub" do
72 systemd_service service_name do
73 after "network-online.target"
74 wants "network-online.target"
75 description "Prometheus #{new_resource.exporter} exporter"
77 user new_resource.user
78 dynamic_user new_resource.user.nil?
79 group new_resource.group
80 environment new_resource.environment
81 exec_start "#{executable_path} #{new_resource.command} #{executable_options}"
82 sandbox :enable_network => true
83 state_directory "prometheus/#{new_resource.exporter}-exporter" if new_resource.ssh && new_resource.user.nil?
84 protect_proc new_resource.protect_proc if new_resource.property_is_set?(:protect_proc)
85 proc_subset new_resource.proc_subset if new_resource.property_is_set?(:proc_subset)
86 capability_bounding_set new_resource.capability_bounding_set if new_resource.property_is_set?(:capability_bounding_set)
87 ambient_capabilities new_resource.ambient_capabilities if new_resource.property_is_set?(:ambient_capabilities)
88 private_devices new_resource.private_devices if new_resource.property_is_set?(:private_devices)
89 private_users new_resource.private_users if new_resource.property_is_set?(:private_users)
90 protect_clock new_resource.protect_clock if new_resource.property_is_set?(:protect_clock)
91 restrict_address_families new_resource.restrict_address_families if new_resource.property_is_set?(:restrict_address_families)
92 memory_deny_write_execute new_resource.memory_deny_write_execute if new_resource.property_is_set?(:memory_deny_write_execute)
93 remove_ipc new_resource.remove_ipc if new_resource.property_is_set?(:remove_ipc)
94 system_call_filter new_resource.system_call_filter if new_resource.property_is_set?(:system_call_filter)
97 service service_name do
98 action [:enable, :start]
99 subscribes :restart, "systemd_service[#{service_name}]"
102 firewall_rule "accept-prometheus-#{new_resource.exporter}" do
107 dest_ports new_resource.port
108 only_if { node[:prometheus][:mode] == "external" }
111 node.default[:prometheus][:addresses][new_resource.exporter] = listen_address
113 if new_resource.register_target
114 node.default[:prometheus][:exporters][new_resource.port] = {
115 :name => new_resource.exporter,
116 :address => listen_address,
117 :labels => new_resource.labels,
118 :scrape_interval => new_resource.scrape_interval,
119 :scrape_timeout => new_resource.scrape_timeout,
120 :metric_relabel => new_resource.metric_relabel
126 service service_name do
127 action [:disable, :stop]
130 systemd_service service_name do
136 service service_name do
138 only_if { service_exists? }
144 if new_resource.service
145 "prometheus-#{new_resource.service}-exporter"
147 "prometheus-#{new_resource.exporter}-exporter"
152 ::File.exist?("/etc/systemd/system/#{service_name}.service")
156 if ::File.exist?("#{executable_directory}/#{executable_name}_#{executable_architecture}")
157 "#{executable_directory}/#{executable_name}_#{executable_architecture}"
159 "#{executable_directory}/#{executable_name}"
163 def executable_directory
164 "/opt/prometheus-exporters/exporters/#{new_resource.exporter}"
168 "#{new_resource.exporter}_exporter"
171 def executable_architecture
172 node[:kernel][:machine]
175 def executable_options
176 "--#{new_resource.listen_switch}=#{listen_argument} #{Array(new_resource.options).join(' ')}"
180 case new_resource.listen_type
181 when "address" then listen_address
182 when "url" then "http://#{listen_address}/metrics"
187 if new_resource.address
188 "#{new_resource.address}:#{new_resource.port}"
189 elsif node[:prometheus][:mode] == "wireguard"
190 "[#{node[:prometheus][:address]}]:#{new_resource.port}"
192 "#{node[:prometheus][:address]}:#{new_resource.port}"
198 subscribes :restart, "archive_file[/opt/prometheus-exporters]"