OCI Infrastructure as Code - Expert Knowledge

NEVER Do This

NEVER hardcode OCIDs in Terraform (breaks portability)

# WRONG - breaks when moving between regions/tenancies
resource "oci_core_instance" "web" {
  compartment_id = "ocid1.compartment.oc1..aaaaaa..."  # Hardcoded!
  subnet_id      = "ocid1.subnet.oc1.phx.bbbbbb..."   # Hardcoded!
}

# RIGHT - variables or data sources
resource "oci_core_instance" "web" {
  compartment_id = var.compartment_ocid
  subnet_id      = data.oci_core_subnet.existing.id
}