Changes rake task and docs location

* Changes rake task to be with other seeds
* Changes docs location to reflect that

doc/administration/raketasks/maintenance.md

@@ -286,14 +286,3 @@ To re-import the metrics you can run:
 ```shell
 sudo gitlab-rake metrics:setup_common_metrics
 ```
-
-## Import additional development metrics
-
-A lot of different types of metrics are supported, like multi line metrics, heatmaps,
-anomaly, etc.
-
-To import these custom metrics, you can run:
-
-```shell
-sudo gitlab-rake 'metrics:setup_development_metrics[your_project_id]'
-```

doc/development/rake_tasks.md

@@ -65,6 +65,16 @@ bin/rake "gitlab:seed:group_seed[subgroup_depth, username]"
 
 Group are additionally seeded with epics if GitLab instance has epics feature available.
 
+#### Seeding custom metrics for the monitoring dashboard
+
+A lot of different types of metrics are supported in the monitoring dashboard.
+
+To import these metrics, you can run:
+
+```shell
+sudo gitlab-rake 'metrics:setup_development_metrics[your_project_id]'
+```
+
 ### Automation
 
 If you're very sure that you want to **wipe the current database** and refill

ee/lib/tasks/gitlab/seed/metrics.rake

+namespace :metrics do
+  desc "GitLab | Metrics | Setup development metrics"
+  task :setup_development_metrics, [:project_id] => :gitlab_environment do |_, args|
+    shared_multi_metrics_attributes = {
+      title: 'Memory multi metric',
+      y_label: 'Memory (GiB)',
+      project_id: args[:project_id],
+      unit: 'GiB',
+      group: 'system'
+    }
+    PrometheusMetric.find_or_create_by(
+      **shared_multi_metrics_attributes,
+      identifier: 'additional_system_metrics_container_memory_usage',
+      legend: 'Usage (GiB)',
+      query: 'avg(sum(container_memory_usage_bytes{id="/"}) by (job)) without (job) / 2^30'
+    )
+    PrometheusMetric.find_or_create_by(
+      **shared_multi_metrics_attributes,
+      identifier: 'additional_system_metrics_kube_node_status_capacity_memory_bytes',
+      query: 'sum(kube_node_status_capacity_memory_bytes{kubernetes_namespace="gitlab-managed-apps"})/2^30',
+      legend: 'Capacity (GiB)'
+    )
+    PrometheusMetric.find_or_create_by(
+      **shared_multi_metrics_attributes,
+      identifier: 'additional_system_metrics_kube_pod_container_resource_requests_memory_bytes',
+      query: 'sum(kube_pod_container_resource_requests_memory_bytes{kubernetes_namespace="gitlab-managed-apps"})/2^30',
+      legend: 'Requested (GiB)'
+    )
+  end
+end

lib/tasks/gitlab/metrics.rake

 # frozen_string_literal: true
 
-namespace :metrics do
-  desc "GitLab | Metrics | Setup development metrics"
-  task :setup_development_metrics, [:project_id] => :gitlab_environment do |_, args|
-    shared_multi_metrics_attributes = {
-      title: 'Memory multi metric',
-      y_label: 'Memory (GiB)',
-      project_id: args[:project_id],
-      unit: 'GiB',
-      group: 'system'
-    }
-    PrometheusMetric.find_or_create_by(
-      **shared_multi_metrics_attributes,
-      identifier: 'additional_system_metrics_container_memory_usage',
-      legend: 'Usage (GiB)',
-      query: 'avg(sum(container_memory_usage_bytes{id="/"}) by (job)) without (job) / 2^30'
-    )
-    PrometheusMetric.find_or_create_by(
-      **shared_multi_metrics_attributes,
-      identifier: 'additional_system_metrics_kube_node_status_capacity_memory_bytes',
-      query: 'sum(kube_node_status_capacity_memory_bytes{kubernetes_namespace="gitlab-managed-apps"})/2^30',
-      legend: 'Capacity (GiB)'
-    )
-    PrometheusMetric.find_or_create_by(
-      **shared_multi_metrics_attributes,
-      identifier: 'additional_system_metrics_kube_pod_container_resource_requests_memory_bytes',
-      query: 'sum(kube_pod_container_resource_requests_memory_bytes{kubernetes_namespace="gitlab-managed-apps"})/2^30',
-      legend: 'Requested (GiB)'
-    )
-  end
-end
-
 namespace :metrics do
   desc "GitLab | Metrics | Setup common metrics"
   task setup_common_metrics: :gitlab_environment do