Add a rake task to turn a Geo secondary node into a Geo primary node

changelogs/unreleased-ee/1921-improve-process-to-designate-a-secondary-node-as-primary.yml

+---
+title: Add geo:set_secondary_as_primary rake task
+merge_request:
+author:
+type: added

doc/gitlab-geo/disaster-recovery.md

@@ -30,35 +30,7 @@ You must make the changes in the exact specific order:
     ```bash
     sudo rm ~git/.ssh/id_rsa ~git/.ssh/id_rsa.pub
     ```
-1. Open the interactive rails console: `sudo gitlab-rails console` and execute:
-    * List your primary node and note down it's id:
-
-        ```ruby
-        Gitlab::Geo.primary_node
-        ```
-    * Remove the old primary node:
-
-        ```ruby
-        Gitlab::Geo.primary_node.destroy
-        ```
-    * List your secondary nodes and note down the id of the one you want to promote:
-
-        ```ruby
-        Gitlab::Geo.secondary_nodes
-        ```
-    * To promote a node with id `2` execute:
-
-        ```ruby
-        GeoNode.find(2).update!(primary: true)
-        ```
-    * Now you have to cleanup your new promoted node by running:
-
-        ```ruby
-        Gitlab::Geo.primary_node.oauth_application.destroy!
-        Gitlab::Geo.primary_node.system_hook.destroy!
-        ```
-    * To exit the interactive console, type: `exit`
-
+1. Run `sudo gitlab-rake geo:set_secondary_as_primary`
 1. Rsync everything in `/var/opt/gitlab/gitlab-rails/uploads` and
    `/var/opt/gitlab/gitlab-rails/shared` from your old node to the new one.
 

lib/tasks/geo.rake

@@ -151,6 +151,29 @@ namespace :geo do
     set_primary_geo_node
   end
 
+  desc 'Make this secondary node the primary'
+  task set_secondary_as_primary: :environment do
+    abort 'GitLab Geo is not supported with this license. Please contact sales@gitlab.com.' unless Gitlab::Geo.license_allows?
+
+    ActiveRecord::Base.transaction do
+      primary_node = Gitlab::Geo.primary_node
+
+      unless primary_node
+        abort 'The primary is not set'
+      end
+
+      primary_node.destroy
+
+      current_node = Gitlab::Geo.current_node
+
+      unless current_node.secondary?
+        abort 'This is not a secondary node'
+      end
+
+      current_node.update!(primary: true)
+    end
+  end
+
   def set_primary_geo_node
     params = {
       schema: Gitlab.config.gitlab.protocol,

spec/tasks/geo_rake_spec.rb

@@ -25,4 +25,24 @@ describe 'geo rake tasks' do
       expect(node.geo_node_key).to be_nil
     end
   end
+
+  describe 'set_secondary_as_primary task' do
+    include ::EE::GeoHelpers
+
+    let!(:current_node) { create(:geo_node) }
+    let!(:primary_node) { create(:geo_node, :primary) }
+
+    before do
+      expect(Gitlab::Geo).to receive(:license_allows?).and_return(true)
+
+      stub_current_geo_node(current_node)
+    end
+
+    it 'removes primary and sets secondary as primary' do
+      run_rake_task('geo:set_secondary_as_primary')
+
+      expect(current_node.primary?).to be_truthy
+      expect(GeoNode.count).to eq(1)
+    end
+  end
 end