1 files changed, 2 insertions, 37 deletions
diff --git a/app/models/clusters/applications/prometheus.rb b/app/models/clusters/applications/prometheus.rb
index 55a9a0ccb81..b9c136abab4 100644
--- a/app/models/clusters/applications/prometheus.rb
+++ b/app/models/clusters/applications/prometheus.rb
@@ -3,7 +3,7 @@
 module Clusters
   module Applications
     class Prometheus < ApplicationRecord
-      include PrometheusAdapter
+      include ::Clusters::Concerns::PrometheusClient
 
       VERSION = '10.4.1'
 
@@ -32,7 +32,7 @@ module Clusters
       end
 
       state_machine :status do
-        after_transition any => [:installed] do |application|
+        after_transition any => [:installed, :externally_installed] do |application|
           application.run_after_commit do
             Clusters::Applications::ActivateServiceWorker
               .perform_async(application.cluster_id, ::PrometheusService.to_param) # rubocop:disable CodeReuse/ServiceClass
@@ -58,14 +58,6 @@ module Clusters
         'https://gitlab-org.gitlab.io/cluster-integration/helm-stable-archive'
       end
 
-      def service_name
-        'prometheus-prometheus-server'
-      end
-
-      def service_port
-        80
-      end
-
       def install_command
         helm_command_module::InstallCommand.new(
           name: name,
@@ -106,29 +98,6 @@ module Clusters
         files.merge('values.yaml': replaced_values)
       end
 
-      def prometheus_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(prometheus_client_default_options)
-          .merge(headers: kube_client.headers)
-        Gitlab::PrometheusClient.new(proxy_url, options)
-      rescue Kubeclient::HttpError, Errno::ECONNRESET, Errno::ECONNREFUSED, Errno::ENETUNREACH
-        # If users have mistakenly set parameters or removed the depended clusters,
-        # `proxy_url` could raise an exception because gitlab can not communicate with the cluster.
-        # Since `PrometheusAdapter#can_query?` is eargely loaded on environement pages in gitlab,
-        # we need to silence the exceptions
-      end
-
-      def configured?
-        kube_client.present? && available?
-      rescue Gitlab::UrlBlocker::BlockedUrlError
-        false
-      end
-
       def generate_alert_manager_token!
         unless alert_manager_token.present?
           update!(alert_manager_token: generate_token)
@@ -146,10 +115,6 @@ module Clusters
           .perform_async(cluster_id, ::PrometheusService.to_param) # rubocop:disable CodeReuse/ServiceClass
       end
 
-      def kube_client
-        cluster&.kubeclient&.core_client
-      end
-
       def install_knative_metrics
         return [] unless cluster.application_knative_available?