Question

Your team uses the Cisco IOS XE Terraform provider (which drives device configuration over RESTCONF) to manage a new branch router. The Terraform configuration defines an OSPF process resource and several interface resources that must be placed into OSPF area 0. During 'terraform apply', the OSPF interface assignments intermittently fail because the OSPF process does not yet exist when the interface resources are applied. Which approach best resolves this ordering problem while keeping the code declarative?

Accepted Answer

Add an explicit 'depends_on' referencing the OSPF process resource in each interface-to-area resource so Terraform builds the correct dependency graph.

Answer

Insert a 'time_sleep' resource with a 30-second delay before the interface resources so the OSPF process has time to commit.

Answer

Run 'terraform apply -parallelism=1' every time so resources are always created strictly in file order.

Answer

Wrap the interface resources in a local-exec provisioner that polls RESTCONF until the OSPF process appears.