Add Grafana to Admin > Monitoring menu when enabled

app/helpers/application_settings_helper.rb

@@ -187,6 +187,8 @@ module ApplicationSettingsHelper
       :gitaly_timeout_default,
       :gitaly_timeout_medium,
       :gitaly_timeout_fast,
+      :grafana_enabled,
+      :grafana_url,
       :gravatar_enabled,
       :hashed_storage_enabled,
       :help_page_hide_commercial_content,

app/views/admin/application_settings/_grafana.html.haml

@@ -0,0 +1,17 @@
+= form_for @application_setting, url: admin_application_settings_path(anchor: 'js-grafana-settings'), html: { class: 'fieldset-form' } do |f|
+  = form_errors(@application_setting)
+
+  %fieldset
+    %p
+      = _("Add a Grafana button in the admin sidebar, monitoring section, to access a variety of statistics on the health and performance of GitLab.")
+      = link_to icon('question-circle'), help_page_path('administration/monitoring/performance/grafana_configuration.md')
+    .form-group
+      .form-check
+        = f.check_box :grafana_enabled, class: 'form-check-input'
+        = f.label :grafana_enabled, class: 'form-check-label' do
+          = _('Enable access to Grafana')
+    .form-group
+      = f.label :grafana_url, _('Grafana URL'), class: 'label-bold'
+      = f.text_field :grafana_url, class: 'form-control', placeholder: '/-/grafana'
+
+  = f.submit _('Save changes'), class: "btn btn-success"

app/views/admin/application_settings/metrics_and_profiling.html.haml

@@ -24,6 +24,17 @@
   .settings-content
     = render 'prometheus'
 
+%section.settings.as-grafana.no-animate#js-grafana-settings{ class: ('expanded' if expanded_by_default?) }
+  .settings-header
+    %h4
+      = _('Metrics - Grafana')
+    %button.btn.btn-default.js-settings-toggle{ type: 'button' }
+      = expanded_by_default? ? _('Collapse') : _('Expand')
+    %p
+      = _('Enable and configure Grafana.')
+  .settings-content
+    = render 'grafana'
+
 %section.settings.qa-performance-bar-settings.as-performance-bar.no-animate#js-performance-bar-settings{ class: ('expanded' if expanded_by_default?) }
   .settings-header
     %h4

app/views/layouts/nav/sidebar/_admin.html.haml

@@ -81,6 +81,11 @@
             = link_to admin_requests_profiles_path, title: _('Requests Profiles') do
               %span
                 = _('Requests Profiles')
+          - if Gitlab::CurrentSettings.current_application_settings.grafana_enabled?
+            = nav_link do
+              = link_to Gitlab::CurrentSettings.current_application_settings.grafana_url, target: '_blank', title: _('Metrics Dashboard') do
+                %span
+                  = _('Metrics Dashboard')
           = render_if_exists 'layouts/nav/ee/admin/new_monitoring_sidebar'
 
       = nav_link(controller: :broadcast_messages) do

changelogs/unreleased/61005-grafanaInAdminSettingsMonitoringMenu.yml

@@ -0,0 +1,5 @@
+---
+title: Adds link to Grafana in Admin > Monitoring settings when grafana is enabled in config
+merge_request: 28937
+author: Romain Maneschi
+type: added

db/migrate/20190617123615_add_grafana_to_settings.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class AddGrafanaToSettings < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  DOWNTIME = false
+
+  def up
+    add_column_with_default(:application_settings, :grafana_enabled, :boolean,
+                            default: false, allow_null: false)
+  end
+
+  def down
+    remove_column(:application_settings, :grafana_enabled)
+  end
+end

db/migrate/20190624123615_add_grafana_url_to_settings.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class AddGrafanaUrlToSettings < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  DOWNTIME = false
+
+  def up
+    add_column_with_default(:application_settings, :grafana_url, :string,
+                            default: '/-/grafana', allow_null: false)
+  end
+
+  def down
+    remove_column(:application_settings, :grafana_url)
+  end
+end

db/schema.rb

@@ -193,6 +193,7 @@ ActiveRecord::Schema.define(version: 20190628185004) do
     t.string "required_instance_ci_template"
     t.boolean "dns_rebinding_protection_enabled", default: true, null: false
     t.boolean "default_project_deletion_protection", default: false, null: false
+    t.boolean "grafana_enabled", default: false, null: false
     t.boolean "lock_memberships_to_ldap", default: false, null: false
     t.text "help_text"
     t.boolean "elasticsearch_indexing", default: false, null: false
@@ -226,6 +227,7 @@ ActiveRecord::Schema.define(version: 20190628185004) do
     t.boolean "elasticsearch_limit_indexing", default: false, null: false
     t.string "geo_node_allowed_ips", default: "0.0.0.0/0, ::/0"
     t.boolean "time_tracking_limit_to_hours", default: false, null: false
+    t.string "grafana_url", default: "/-/grafana", null: false
     t.index ["custom_project_templates_group_id"], name: "index_application_settings_on_custom_project_templates_group_id", using: :btree
     t.index ["file_template_project_id"], name: "index_application_settings_on_file_template_project_id", using: :btree
     t.index ["usage_stats_set_by_user_id"], name: "index_application_settings_on_usage_stats_set_by_user_id", using: :btree

doc/administration/monitoring/performance/grafana_configuration.md

@@ -103,6 +103,21 @@ repository for more information on this process.
 
 [grafana-dashboards]: https://gitlab.com/gitlab-org/grafana-dashboards
 
+## Integration with GitLab UI
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/issues/61005) in GitLab 12.1.
+
+If you have set up Grafana, you can enable a link to access it easily from the sidebar:
+
+1. Go to the admin area under **Settings > Metrics and profiling**
+   and expand "Metrics - Grafana".
+1. Check the "Enable access to Grafana" checkbox.
+1. If Grafana is enabled through Omnibus GitLab and on the same server,
+   leave "Grafana URL" unchanged. In any other case, enter the full URL
+   path of the Grafana instance.
+1. Click **Save changes**.
+1. The new link will be available in the admin area under **Monitoring > Metrics Dashboard**.
+
 ---
 
 Read more on:

lib/api/settings.rb

@@ -55,6 +55,8 @@ module API
       optional :gitaly_timeout_default, type: Integer, desc: 'Default Gitaly timeout, in seconds. Set to 0 to disable timeouts.'
       optional :gitaly_timeout_fast, type: Integer, desc: 'Gitaly fast operation timeout, in seconds. Set to 0 to disable timeouts.'
       optional :gitaly_timeout_medium, type: Integer, desc: 'Medium Gitaly timeout, in seconds. Set to 0 to disable timeouts.'
+      optional :grafana_enabled, type: Boolean, desc: 'Enable Grafana'
+      optional :grafana_url, type: String, desc: 'Grafana URL'
       optional :gravatar_enabled, type: Boolean, desc: 'Flag indicating if the Gravatar service is enabled'
       optional :help_page_hide_commercial_content, type: Boolean, desc: 'Hide marketing-related entries from help'
       optional :help_page_support_url, type: String, desc: 'Alternate support URL for help page'

locale/gitlab.pot

@@ -605,6 +605,9 @@ msgstr ""
 msgid "Add a GPG key"
 msgstr ""
 
+msgid "Add a Grafana button in the admin sidebar, monitoring section, to access a variety of statistics on the health and performance of GitLab."
+msgstr ""
+
 msgid "Add a bullet list"
 msgstr ""
 
@@ -3923,9 +3926,15 @@ msgstr ""
 msgid "Enable HTML emails"
 msgstr ""
 
+msgid "Enable access to Grafana"
+msgstr ""
+
 msgid "Enable access to the Performance Bar for a given group."
 msgstr ""
 
+msgid "Enable and configure Grafana."
+msgstr ""
+
 msgid "Enable and configure InfluxDB metrics."
 msgstr ""
 
@@ -4933,6 +4942,9 @@ msgstr ""
 msgid "Got it!"
 msgstr ""
 
+msgid "Grafana URL"
+msgstr ""
+
 msgid "Grant access"
 msgstr ""
 
@@ -6391,12 +6403,18 @@ msgstr ""
 msgid "Metrics"
 msgstr ""
 
+msgid "Metrics - Grafana"
+msgstr ""
+
 msgid "Metrics - Influx"
 msgstr ""
 
 msgid "Metrics - Prometheus"
 msgstr ""
 
+msgid "Metrics Dashboard"
+msgstr ""
+
 msgid "Metrics and profiling"
 msgstr ""