1 files changed, 32 insertions, 0 deletions
diff --git a/app/models/clusters/applications/prometheus.rb b/app/models/clusters/applications/prometheus.rb
index 9b0787ee6ca..aa22e9d5d58 100644
--- a/app/models/clusters/applications/prometheus.rb
+++ b/app/models/clusters/applications/prometheus.rb
@@ -10,10 +10,26 @@ module Clusters
 
       default_value_for :version, VERSION
 
+      state_machine :status do
+        after_transition any => [:installed] do |application|
+          application.cluster.projects.each do |project|
+            project.find_or_initialize_service('prometheus').update(active: true)
+          end
+        end
+      end
+
       def chart
         'stable/prometheus'
       end
 
+      def service_name
+        'prometheus-prometheus-server'
+      end
+
+      def service_port
+        80
+      end
+
       def chart_values_file
         "#{Rails.root}/vendor/#{name}/values.yaml"
       end
@@ -21,6 +37,22 @@ module Clusters
       def install_command
         Gitlab::Kubernetes::Helm::InstallCommand.new(name, chart: chart, chart_values_file: chart_values_file)
       end
+
+      def proxy_client
+        return unless kube_client
+
+        proxy_url = kube_client.proxy_url('service', service_name, service_port, Gitlab::Kubernetes::Helm::NAMESPACE)
+
+        # ensures headers containing auth data are appended to original k8s client options
+        options = kube_client.rest_client.options.merge(headers: kube_client.headers)
+        RestClient::Resource.new(proxy_url, options)
+      end
+
+      private
+
+      def kube_client
+        cluster&.kubeclient
+      end
     end
   end
 end