Terraform Error creating Topic: googleapi: Error 403: User not authorized to perform this action - kubernetes

Question

Googleapi: Error 403: User not authorized to perform this action
provider "google" {
project = "xxxxxx"
region = "us-central1"
}
resource "google_pubsub_topic" "gke_cluster_upgrade_notifications" {
name = "cluster-notifications"
labels = {
foo = "bar"
}
message_storage_policy {
allowed_persistence_regions = [
"region",
]
}
}
# create the storage bucket for our scripts
resource "google_storage_bucket" "source_code" {
name = "xxxxxx-bucket-lh05111992"
location = "us-central1"
force_destroy = true
}
# zip up function source code
data "archive_file" "function_script_zip" {
type = "zip"
source_dir = "./function/"
output_path = "./function/main.py.zip"
}
# add function source code to storage
resource "google_storage_bucket_object" "function_script_zip" {
name = "main.py.zip"
bucket = google_storage_bucket.source_code.name
source = "./function/main.py.zip"
}
resource "google_cloudfunctions_function" "gke_cluster_upgrade_notifications" {---
-------
}
The service account has the owner role attached
Also tried using
1.export GOOGLE_APPLICATION_CREDENTIALS={{path}}
2.credentials = "${file("credentials.json")}" by place json file in terraform root folder.

Answer 1

It seems that the used account is missing some permissions (e.g. pubsub.topics.create) to create the Cloud Pub/Sub topic. The owner role should be sufficient to create the topic, as it contains the necessary permissions (you can check this here). Therefore, a wrong service account might be set in Terraform.
To address these IAM issues I would suggest:
Use the Policy Troubleshooter.
Impersonate service account and do the API call using CLI with --verbosity=debug flag, which will provide helpful information about the missing permissions.