OSMH Group Software Sources update-in-place (oci_os_management_hub_managed_instance_group)

[Sneedes]

The oci_os_management_hub_managed_instance_group does not behave as expected.
I cannot update an OS Management Hub Group manifest from Terraform.

From the OCI GUI...if I were to attempt to detach the lone/single software source:
Invalid software source(s). Removing all software sources from a group is disallowed.

From the OCI GUI...I can perform the desired update by Attaching the new software source and then detaching the old software source.

When I attempt to update/modify the group manifest / software sources via Terraform...a change is detected...and made...but no change is actually performed in OCI. The same change on every subsequent terraform apply.

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Terraform Version and Provider Version

$ terraform -v
Terraform v1.10.3
on linux_amd64
+ provider registry.terraform.io/oracle/oci v6.21.0

Affected Resource(s)

oci_os_management_hub_managed_instance_group

Terraform Configuration Files

Original resource creation (successful):

resource "oci_os_management_hub_managed_instance_group" "general_test_ol9_x86_64" {
  arch_type           = "X86_64"
  compartment_id      = oci_identity_compartment.osmh.id
  display_name        = "general_test_ol9_x86_64"
  os_family           = "ORACLE_LINUX_9"
  vendor_name         = "ORACLE"
  software_source_ids = [oci_os_management_hub_software_source.ol9_x86_64["20241204"].id]
  description         = "Oracle Linux 9 for general purpose dev/test/uat"
}

Attempting to update/modify the resource by providing a different list of software_source_ids...

resource "oci_os_management_hub_managed_instance_group" "general_test_ol9_x86_64" {
  arch_type           = "X86_64"
  compartment_id      = oci_identity_compartment.osmh.id
  display_name        = "general_test_ol9_x86_64"
  os_family           = "ORACLE_LINUX_9"
  vendor_name         = "ORACLE"
  software_source_ids = [oci_os_management_hub_software_source.ol9_x86_64["20241227"].id]
  description         = "Oracle Linux 9 for general purpose dev/test/uat"
}

Debug Output

Note the output from terraform apply...change is detected...and claimed to be made...but the same result occurs on every subsequent terraform apply.

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # oci_os_management_hub_managed_instance_group.general_test_ol9_x86_64 will be updated in-place
  ~ resource "oci_os_management_hub_managed_instance_group" "general_test_ol9_x86_64" {
        id                             = "ocid1.osmhmanagedinstancegroup.oc2.us-langley-1.amaaaaaai4ynlmyagqtwnjy7o4ti4sh44dxvtaddruwy2cjikse2me3vbyra"
      ~ software_source_ids            = [
          ~ "ocid1.osmhsoftwaresource.oc2.us-langley-1.amaaaaaai4ynlmya4yjcluvfqhvznrgyfzxjiou7rbi4tove2w5j67kiu5na" -> "ocid1.osmhsoftwaresource.oc2.us-langley-1.amaaaaaai4ynlmya4hpv7cpwdxde5sa2yzfny4jwlefelo3jwhzexu55wj6a",
        ]
        # (18 unchanged attributes hidden)

        # (1 unchanged block hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

oci_os_management_hub_managed_instance_group.general_test_ol9_x86_64: Modifying... [id=ocid1.osmhmanagedinstancegroup.oc2.us-langley-1.amaaaaaai4ynlmyagqtwnjy7o4ti4sh44dxvtaddruwy2cjikse2me3vbyra]
oci_os_management_hub_managed_instance_group.general_test_ol9_x86_64: Modifications complete after 0s [id=ocid1.osmhmanagedinstancegroup.oc2.us-langley-1.amaaaaaai4ynlmyagqtwnjy7o4ti4sh44dxvtaddruwy2cjikse2me3vbyra]

Apply complete! Resources: 0 added, 1 changed, 0 destroyed.

Panic Output

Expected Behavior

Expected for the terraform apply to perform the needful...detach and attach software sources in desired order to actually replace the software sources associated with the group in OS Management Hub.

Actual Behavior

When I attempt to update/modify the group manifest / software sources via Terraform...a change is detected...and made...but no change is actually performed in OCI. The same change on every subsequent terraform apply.

No changes performed in OCI. The terraform apply claims that 1 resource was modified, but the resource was not actually modified.

Steps to Reproduce

1. terraform apply

Important Factoids

OCI GovCloud
US Gov East (Ashburn) region

References

[tf-oci-pub]

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