Fix connectivity check in rake gitlab:geo:check

Historically, this check was there to ensure the primary could
pull the status information from the secondary. This fix removes
that check

ee/changelogs/unreleased/7197-remove-can-primary-connect-to-secondary-check-from-gitlab-geo-check.yml

+---
+title: 'Geo: Remove connectivity check from primary to secondary from gitlab:geo:check
+  rake task'
+merge_request: 7821
+author:
+type: fixed

ee/lib/system_check/geo/http_connection_check.rb

@@ -2,27 +2,31 @@ module SystemCheck
   module Geo
     class HttpConnectionCheck < SystemCheck::BaseCheck
       set_name 'GitLab Geo HTTP(S) connectivity'
-      set_skip_reason 'Geo is not enabled'
+
+      NOT_SECONDARY_NODE = 'not a secondary node'.freeze
+      GEO_NOT_ENABLED = 'Geo is not enabled'.freeze
 
       def skip?
-        !Gitlab::Geo.enabled?
+        unless Gitlab::Geo.enabled?
+          self.skip_reason = GEO_NOT_ENABLED
+
+          return true
         end
 
-      def multi_check
-        $stdout.puts
+        unless Gitlab::Geo.secondary?
+          self.skip_reason = NOT_SECONDARY_NODE
 
-        if Gitlab::Geo.primary?
-          Gitlab::Geo.secondary_nodes.each do |node|
-            $stdout.print "* Can connect to secondary node: '#{node.url}' ... "
-            check_gitlab_geo_node(node)
+          return true
         end
+
+        false
       end
 
-        if Gitlab::Geo.secondary?
+      def multi_check
+        $stdout.puts
         $stdout.print '* Can connect to the primary node ... '
         check_gitlab_geo_node(Gitlab::Geo.primary_node)
       end
-      end
 
       private
 

ee/spec/lib/system_check/geo/http_connection_check_spec.rb

+# frozen_string_literal: true
+require 'spec_helper'
+
+describe SystemCheck::Geo::HttpConnectionCheck do
+  describe 'skip?' do
+    it 'skips when Geo is disabled' do
+      allow(Gitlab::Geo).to receive(:enabled?) { false }
+
+      expect(subject.skip?).to be_truthy
+      expect(subject.skip_reason).to eq('Geo is not enabled')
+    end
+
+    it 'skips when Geo is enabled but its a primary node' do
+      allow(Gitlab::Geo).to receive(:enabled?) { true }
+      allow(Gitlab::Geo).to receive(:secondary?) { false }
+
+      expect(subject.skip?).to be_truthy
+      expect(subject.skip_reason).to eq('not a secondary node')
+    end
+  end
+end