Variables

Variables can be specified in the spec.variables section. There are two ways to how variables are used:

Variable needed by your Terraform module
Environment Variables (possibly needed for your Terraform provider)

Variables for Terraform Modules

These variables are needed by your module, they can be specified as follows:

apiVersion: run.terraform-operator.io/v1alpha1
kind: Terraform
...
spec:
  ...
  variables:
    - key: the_name_of_the_variable
      value: value_of_the_variable

      # valueFrom:
      #   secretKeyRef:
      #     name: aws-credentials
      #     key: AWS_ACCESS_KEY

      #    configMapKeyRef
      #      name: common-cfg
      #      key: some-key

You can specify the value directly in the value field. Variables can also be pulled from a secretkeyRef or configMapKeyRef, this can be done by specifying the valueFrom field

Variables as Environment Variables

Yon can specify variables to be set as environment variables, these variables will not be used in your terraform module, but maybe needed by the Terraform provider. Lets take the AWS Provider as an example.

The provider expects certain variables to be set to authenticate. You can specify environment variables by flagging the environmentVariable as follows:

apiVersion: run.terraform-operator.io/v1alpha1
kind: Terraform
...
spec:
  ...
  variables:
    - key: the_name_of_the_variable
      environmentVariable: true
      value: value_of_the_variable

      # valueFrom:
      #   secretKeyRef:
      #     name: aws-credentials
      #     key: AWS_ACCESS_KEY

      #    configMapKeyRef
      #      name: common-cfg
      #      key: some-key

Variables from a dependency

You can use a variable from another workflow/run, this will save you the trouble of using the terraform_remote_state data resource

This currently only works for workflows/runs that are in the same namespace

apiVersion: run.terraform-operator.io/v1alpha1
kind: Terraform
metadata:
  name: terraform-run1
spec:
  terraformVersion: 1.1.7

  module:
    source: IbraheemAlSaady/test/module
    version: 0.0.3

  variables:
    - key: length
      value: "4"

  outputs:
    - key: number
      moduleOutputName: number
---
apiVersion: run.terraform-operator.io/v1alpha1
kind: Terraform
metadata:
  name: terraform-run2
spec:
  terraformVersion: 1.1.7

  module:
    source: IbraheemAlSaady/test/module
    version: 0.0.3

  ## this must be specified in order for the variable dependencyRef to work
  dependsOn:
    - name: terraform-run1

  variables:
    - key: length
      dependencyRef:
        name: terraform-run1
        ## this is the key from the "terraform-run1" output field
        key: number