1 files changed, 27 insertions, 0 deletions
diff --git a/lib/gitlab/config_checker/external_database_checker.rb b/lib/gitlab/config_checker/external_database_checker.rb
new file mode 100644
index 00000000000..795082a10a0
--- /dev/null
+++ b/lib/gitlab/config_checker/external_database_checker.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module ConfigChecker
+    module ExternalDatabaseChecker
+      extend self
+
+      # DB is considered deprecated if it is below version 11
+      def db_version_deprecated?
+        Gitlab::Database.version.to_f < 11
+      end
+
+      def check
+        return [] unless db_version_deprecated?
+
+        [
+          {
+            type: 'warning',
+            message: _('Note that PostgreSQL 11 will become the minimum required PostgreSQL version in GitLab 13.0 (May 2020). '\
+                     'PostgreSQL 9.6 and PostgreSQL 10 will no longer be supported in GitLab 13.0. '\
+                     'Please consider upgrading your PostgreSQL version (%{db_version}) soon.') % { db_version: Gitlab::Database.version.to_s }
+          }
+        ]
+      end
+    end
+  end
+end