Is there any option available for handling Openstack provider credentials in Terraform similar to the one exists in AWS provider like Environment variables.
My Usecase:
As part of the POC, I would be invoking the terraform apply command from my python app in which I am planning to define the Openstack credentials as environment variables and unset the same once execution completed. By this I can avoid storing the credentials in files as well the vault/consul complexity.
Please clarify, thanks.
There are several ways of solving this. I would recommend doing this from a Vault. But if you really do not want to do that, you could use Terraform input variables and use environment variables there.
Like this: terraform apply -var "osuser=${ENV_VAR}"
Or specifically for the OpenStack Provider in Terraform you can use the Environment Variables that are documented here: https://www.terraform.io/docs/providers/openstack/
From documentation:
auth_url - (Optional; required if cloud is not specified) The Identity authentication URL. If omitted, the OS_AUTH_URL environment variable is used.
These environment variables are usually provided to you in the openstack GUI as well.