google_composer_environment resource requires zone field

[tmessinis]

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Terraform Version

Terraform v0.11.11

Affected Resource(s)

• google_composer_environment

Expected Behavior

It should have created the composer cluster.

Actual Behavior

* module.dataplatform_common.google_composer_environment.<resource name>: 1 error(s) occurred:

* google_composer_environment.<resource name>: A zone must be specified

Steps to Reproduce

1. terraform apply

According to the documentation for the google_composer_environment resource, zone and machine_type are optional fields to be defined in a tf manifest (https://www.terraform.io/docs/providers/google/r/composer_environment.html#node_config). When we specify a machine_type in our manifest we get the error included above.

When both machine_type and zone options are not included we get the following error:

Error: Error applying plan:

1 error(s) occurred:

* module.dataplatform_common.google_composer_environment.<resource name>: 1 error(s) occurred:

* google_composer_environment.<resource name>: The zonal field for resource machineTypes cannot be empty.

When a zone is specified and the machine_type gets omitted the plan gets applied without any issues.

We think that this is a new requirement by Google since even when we try to create a composer cluster via gcloud we get the following:

$ gcloud composer environments create <project> --location=us-central1 --machine-type=n1-standard-1
ERROR: (gcloud.composer.environments.create) value for field [zone] in collection [compute.machineTypes] is required but was not provided

This seems something that needs to be updated on your end both on the docs and source code, since even looking at the source code for the composer resource, zone is defined as optional: https://github.com/terraform-providers/terraform-provider-google/blob/97347e5de57c7199f963599acc50f5df9391288b/google/resource_composer_environment.go#L92

[ghost]

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