1 files changed, 27 insertions, 0 deletions
diff --git a/db/migrate/20210216135504_add_created_by_to_cluster_agent.rb b/db/migrate/20210216135504_add_created_by_to_cluster_agent.rb
new file mode 100644
index 00000000000..fd679a1c525
--- /dev/null
+++ b/db/migrate/20210216135504_add_created_by_to_cluster_agent.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+class AddCreatedByToClusterAgent < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_cluster_agents_on_created_by_user_id'
+
+  disable_ddl_transaction!
+
+  def up
+    unless column_exists?(:cluster_agents, :created_by_user_id)
+      with_lock_retries do
+        add_column :cluster_agents, :created_by_user_id, :bigint
+      end
+    end
+
+    add_concurrent_index :cluster_agents, :created_by_user_id, name: INDEX_NAME
+    add_concurrent_foreign_key :cluster_agents, :users, column: :created_by_user_id, on_delete: :nullify
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :cluster_agents, :created_by_user_id
+    end
+  end
+end