1 files changed, 29 insertions, 0 deletions
diff --git a/db/post_migrate/20220531024143_remove_clusters_deployments_cluster_id_fk.rb b/db/post_migrate/20220531024143_remove_clusters_deployments_cluster_id_fk.rb
new file mode 100644
index 00000000000..261a06a9b9c
--- /dev/null
+++ b/db/post_migrate/20220531024143_remove_clusters_deployments_cluster_id_fk.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+class RemoveClustersDeploymentsClusterIdFk < Gitlab::Database::Migration[2.0]
+  FK_NAME = 'fk_289bba3222'
+
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      remove_foreign_key_if_exists(
+        :deployments,
+        :clusters,
+        name: FK_NAME,
+        reverse_lock_order: true
+      )
+    end
+  end
+
+  def down
+    add_concurrent_foreign_key(
+      :deployments,
+      :clusters,
+      name: FK_NAME,
+      column: :cluster_id,
+      target_column: :id,
+      on_delete: :nullify
+    )
+  end
+end