concourse ci job parameterization - concourse

Question

i want to parametrize jobs for different envs.
for example:
resources:
- name: prod
type: terraform
icon: terraform
source:
backend_type: s3
backend_config:
env_name: prod
bucket:
key:
env:
AWS_ACCESS_KEY_ID: ((aws-sts:prod.access_key))
AWS_SECRET_ACCESS_KEY: ((aws-sts:prod.secret_key))
AWS_SESSION_TOKEN: ((aws-sts:prod.security_token))
AWS_REGION: ((vault:kv/my-vault.region))
jobs:
- name: terraform plan prod
disable_manual_trigger: true
plan:
- get: git-repo-prod
trigger: true
- put: prod
params:
env_name: prod
terraform_source: git-repo-prod/terraform
plan_only: true
vars:
region: ((vault:kv/my-vault.region))
2 questions:
How can i create template for this job. For example now i have job terraform plan prod and i would like to have 1 template for different jobs with different envs. terraform plan * (prod/ppe/qa/dev)
how to manage vars with files?
vars:
region: ((vault:kv/my-vault.region))
i can use vars_file but i this case concourse transfers variables as a sting to terraform ( region: ((vault:kv/my-vault.region)) something like this)
Is it any possibilities to do this in concourse?

Answer 1

Try changing
vars:
region: ((vault:kv/my-vault.region))
to
vars: ((vault:kv/my-vault))
When concourse encounters a field with sub-fields (that aren't value in the case of Vault), it treats them as an object type to be rendered in yaml. Good luck!