Option to Choose IP address when creating compute instance

[edercervantes]

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Description

Currently when creating a compute instance using oci_core_instance, it is not possible to choose an existing reserved public IP address for the "assign_public_ip" field.

An ideal solution would be another field that works with "assign_public_ip" field to choose what IP address existing within a tenancy to assign to a compute instance's private ip.

New or Affected Resource(s)

Potential Terraform Configuration

resource "oci_core_instance" "test_instance" {
    availability_domain = var.instance_availability_domain
    compartment_id = var.compartment_id
    shape = var.instance_shape

    create_vnic_details {
        private_ip = var.instance_create_vnic_details_private_ip
        assign_public_ip = var.instance_create_vnic_details_assign_public_ip
        
        #only used when assign_public_ip is true
        #if not used, then random IP is assigned
        choose_public_ip = var.existing_reserved_public_ip_address
    }
}

References

[dhoogfr]

At this moment you can assign a reserved public IP address, by setting assign_public_ip to false and do the assignment in the oci_core_public_ip resource by linking it to the private ip id of the instance.
This is indeed more cumbersome as you need to use datasources to get the list of vnic attachments to the instance and then use that to get the id of the ip address of such an attachment.
So, being able to directly specify the id of the reserved public ip resource would be easier.
However, I think it would only be able to attach a reserved public IP to the first private IP of the first vnic attachment.

[edercervantes]

Hi @dhoogfr , I believe you are right that it is possible to create a reserved public IP and then assign it to a private IP.
The scenario I am thinking of is creating a reserved public IP independent from Terraform, then using Terraform to look up that existing IP, and assigning it to the private ip at the time of instance creation.

Hopefully I clarified my request. Does that seem possible?

[edercervantes]

Hello, just following up to see if there has been any traction on this request?

[ravinitp]

We are very sorry that we couldn't respond to each and every issue reported on GitHub.
Although we have refined the process to prioritize customer issues on GitHub, since this issue was reported a while ago, there is a good chance it may have been fixed in the latest version of Terraform Provider OCI.
If you are still experiencing this issue, please create a new issue and label it as Bug.