Add inline comment for lifecycle.ignore reasoning

GoogleCloudPlatform · Oct 30, 2023 · dfbabfb · dfbabfb
1 parent f5c1dda
commit dfbabfb
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/mmv1/templates/terraform/examples/alloydb_secondary_instance_basic.tf.erb b/mmv1/templates/terraform/examples/alloydb_secondary_instance_basic.tf.erb
@@ -32,6 +32,9 @@ resource "google_alloydb_cluster" "secondary" {
 
   deletion_policy = "FORCE"
 
+  # Need lifecycle.ignore_changes because instance_type is an immutable field.
+  # And when promoting cluster from SECONDARY to PRIMARY, the instance_type of the associated secondary instance also changes and becomes PRIMARY.
+  # And we do not want terraform to destroy and create the instance because the field is immutable
   lifecycle {
     ignore_changes = [instance_type]
   }