Add community prometheus cookbook

cookbooks/prometheus/resources/alertmanager_config.rb

@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+provides :prometheus_alertmanager_config
+unified_mode true
+
+use '_partial/_common'
+use '_partial/_alertmanager'
+
+property :template_cookbook, String, default: 'prometheus'
+property :template_source, String, default: 'alertmanager.yml.erb'
+property :notification_config, Hash, default: {}
+
+default_action :create
+
+action :create do
+  template new_resource.config_file do
+    cookbook new_resource.template_cookbook
+    source new_resource.template_source
+    mode '0644'
+    owner new_resource.user
+    group new_resource.group
+    variables(notification_config: new_resource.notification_config)
+  end
+end
+
+action :delete do
+  file new_resource.config_file do
+    action :delete
+  end
+end