Error: updating CNAME record is not supported

[deromemont]

When I try to update a CNAME record
For exemple:

resource "infoblox_cname_record" "test-update" {
  canonical="www.google.com"
  zone="myzone.net"
  alias="test-update"
  tenant_id="tenant-id"
  dns_view="view"
}

Creation is OK

But I try to update

resource "infoblox_cname_record" "test-update" {
  canonical="www.google.com"
  zone="myzone.net"
  alias="test-update2"
  tenant_id="tenant-id"
  dns_view="view"
}

Plan: 0 to add, 1 to change, 0 to destroy.
infoblox_cname_record.test-update: Modifying... [id=record:cname/xxxxxxxxxx]
"Error: updating CNAME record is not supported"

If the infoblox API doesn't support update, could you make a destroy / creation of the object like other provider in terraform

Thx

[schlitzered]

the same problem exists for a and ptr records. technically the IB API supports changing records. it is "just" not implemented

[donwlewis]

I think the quickest fix for this would just be to delete and create the record. I would like to see this implemented as well.

[deromemont]

Yes but we have an automated workflow ans it's hard to ask users to destroy one cname ans recreate it ...

It's not possible to declare this ressource not updatable ? For example, when you modify some ressource on aws provider, for some modification, the only solution is to destroy and recreate.
So i think there are a mecanism on terraform api side

[donwlewis]

I think it would just be a matter of adding this to the schema of the fields you would want to force a new resource to be created:

https://www.terraform.io/docs/extend/schemas/schema-behaviors.html#forcenew

Basically doing something like

"vm_name": &schema.Schema{
	Type:        schema.TypeString,
	Required:    true,
        ForceNew:    true,
	Description: "The name of the VM.",
}

[schlitzered]

i would suggest to not do a create/delete. and instead make use of the update feature of the IB API.

afaik IB increments the zone serial on every write, which means that also a notify would be send for every write.

this could lead to a short time where a record is not available. because it would be deleted first.

this might not be what users expect, and can lead to unexpected errors in name resolution.