In Terraform I have enabled logging in firewall module and created 3 custom firewall rules in GCP and once terraform is applied logconfig is set to true. If I fire gcloud compute firewall-rules list --format="table(name,logConfig)" command my custom firewall rules shows LOG_CONFIG as 'enable': True whereas automatically created GKE cluster and service firewall rules shows as False.

Manually from console/command line I can update to true for GKE cluster and service firewall rules whereas via terraform I couldnt find solution. I have found the documentation on automatically created firewall rules in GCP https://cloud.google.com/kubernetes-engine/docs/concepts/firewall-rules but dint found out enable log config automatically.

Could anyone provide me the solution.

Currently I am using this firewall rule and its enabling logconfig for my custom rules.

resource "google_compute_firewall" "default" {
  name    = "sample"
  network = "sample-network"
  project = "sample-project"
  enable_logging = "true"

  allow {
    protocol  = var.proto
    ports     = var.ports
  }
  
 log_config {
   metadata = "INCLUDE_ALL_METADATA"
  }

  source_tags   = var.sourceTags
  source_ranges = var.sourceRanges
  target_tags   = var.targetTags
}