[CBD-98] adding a template configuration file that can be used to start everything

Author: Nick Apostolakis

attributes/default.rb

@@ -211,15 +211,20 @@
 default['prometheus']['alertmanager']['git_revision']                                     = node['prometheus']['alertmanager']['version']
 
 # Alertmanager configuration file name.
-default['prometheus']['alertmanager']['config.file']                                      = "#{node['prometheus']['dir']}/alertmanager/simple.yml"
+default['prometheus']['alertmanager']['config.file']                                      = "#{node['prometheus']['dir']}/alertmanager/alertmanager.config.yml"
 
 # Alertmanager configuration chef template name.
 default['prometheus']['alertmanager']['config_cookbook_name']                             = 'prometheus'
 
 # Alertmanager custom configuration cookbook.  Use this if you'd like to bypass the
 # default prometheus cookbook Alertmanager configuration template and implement your own
 # templates and recipes to configure Alertmanager.
-default['prometheus']['alertmanager']['config_template_name']                             = 'alertmanager.conf.erb'
+default['prometheus']['alertmanager']['config_template_name']                             = 'alertmanager.config.yml.erb'
+
+# Smarthost to use when Alertmanager notifies using email
+default['prometheus']['alertmanager']['smarthost']                            = 'localhost:25'
+# Mail from to use when Alertmanager notifies using email
+default['prometheus']['alertmanager']['mailfrom']                            = 'alertmanager@example.org'
 
 # Service key to use when Alertmanager notifies Pager Duty
 default['prometheus']['alertmanager']['pagerduty_service_key']                            = 'supersecretapikey'

recipes/alertmanager.rb

@@ -55,6 +55,17 @@
   action :put
 end
 
+log 'creating a sample configuration file if it does not exist'
+template node['prometheus']['alertmanager']['config.file'] do
+  cookbook  node['prometheus']['alertmanager']['config_cookbook_name']
+  source    node['prometheus']['alertmanager']['config_template_name']
+  mode      0644
+  owner     node['prometheus']['user']
+  group     node['prometheus']['group']
+  not_if do ::File.exists?("#{node['prometheus']['alertmanager']['config.file']}") end
+end
+
+
 log 'setting up alertmanager service'
 alertmanager_command="#{node['prometheus']['alertmanager']['binary']} -config.file=#{node['prometheus']['alertmanager']['config.file']}"
  supervisor_service "alertmanager" do