terraform-github-actions

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Problem description

"terraform-plan" fails with an error while using "terraform plan" succeeds (see Workflow YAML below).

Terraform version

1.5.1

Backend

Azure blob storage

Workflow YAML

- name: Terraform Plan (non 3rd party) # Works like a charm
        id: plan-non-third-party
        run: terraform plan

      - name: Terraform Plan # fails with the error
        id: plan
        if: (github.event_name == 'pull_request') || ( github.event_name == 'workflow_dispatch' && github.ref != 'refs/heads/main')
        uses: dflook/[email protected]
        with:
          path: ${{ inputs.target }}
          label: ${{ inputs.target }}

Workflow log

2023-07-25T10:57:05.1169860Z ##[group]Installing Terraform
2023-07-25T10:57:05.7172014Z gpg: Signature made Tue Apr 19 07:30:27 2022 UTC
2023-07-25T10:57:05.7172696Z gpg:                using RSA key ---------------------
2023-07-25T10:57:05.7204330Z gpg: Good signature from "HashiCorp Security (hashicorp.com/security) <[email protected]>" [ultimate]
2023-07-25T10:57:05.8429868Z terraform_0.12.0_linux_amd64.zip: OK
2023-07-25T10:57:07.7950008Z gpg: Signature made Wed Jun 21 10:32:17 2023 UTC
2023-07-25T10:57:07.7950573Z gpg:                using RSA key ---------------------
2023-07-25T10:57:07.7967975Z gpg: Good signature from "HashiCorp Security (hashicorp.com/security) <[email protected]>" [ultimate]
2023-07-25T10:57:08.0843961Z terraform_1.5.1_linux_amd64.zip: OK
2023-07-25T10:57:08.5504593Z Using the same terraform version that wrote the existing remote state file
2023-07-25T10:57:08.5505159Z Switched to Terraform v1.5.1
2023-07-25T10:57:09.2181916Z Detected azurerm backend
2023-07-25T10:57:09.2182779Z ##[endgroup]
2023-07-25T10:57:09.2188654Z ##[group]Initializing Terraform
2023-07-25T10:57:09.2494002Z 
2023-07-25T10:57:09.2494783Z [0m[1mInitializing the backend...[0m
2023-07-25T10:57:10.2280820Z [0m[32m
2023-07-25T10:57:10.2281722Z Successfully configured the backend "azurerm"! Terraform will automatically
2023-07-25T10:57:10.2283260Z use this backend unless the backend configuration changes.[0m
2023-07-25T10:57:11.2348119Z [0m[1mInitializing modules...[0m
2023-07-25T10:57:11.2353385Z Downloading git::ssh://[email protected]/module-dependency for elastic_dev...
....
2023-07-25T10:57:15.3947094Z [0m[1mInitializing provider plugins...[0m
2023-07-25T10:57:15.3947881Z - Reusing previous version of hashicorp/archive from the dependency lock file
2023-07-25T10:57:15.4574551Z - Reusing previous version of hashicorp/tls from the dependency lock file
2023-07-25T10:57:15.5005163Z - Reusing previous version of elastic/ec from the dependency lock file
2023-07-25T10:57:15.5141448Z - Reusing previous version of hashicorp/azurerm from the dependency lock file
2023-07-25T10:57:15.5551038Z - Reusing previous version of hashicorp/aws from the dependency lock file
2023-07-25T10:57:15.6468282Z - Installing hashicorp/archive v2.4.0...
2023-07-25T10:57:16.1245133Z - Installed hashicorp/archive v2.4.0 (signed by HashiCorp)
2023-07-25T10:57:16.1936631Z - Installing hashicorp/tls v4.0.4...
2023-07-25T10:57:16.6578807Z - Installed hashicorp/tls v4.0.4 (signed by HashiCorp)
2023-07-25T10:57:16.9308095Z - Installing elastic/ec v0.7.0...
2023-07-25T10:57:17.8239281Z - Installed elastic/ec v0.7.0 (signed by a HashiCorp partner, key ID [0m[1m---------------------[0m[0m)
2023-07-25T10:57:17.8746475Z - Installing hashicorp/azurerm v3.18.0...
2023-07-25T10:57:21.5475472Z - Installed hashicorp/azurerm v3.18.0 (signed by HashiCorp)
2023-07-25T10:57:21.5831713Z - Installing hashicorp/aws v4.51.0...
2023-07-25T10:57:28.7353224Z - Installed hashicorp/aws v4.51.0 (signed by HashiCorp)
2023-07-25T10:57:28.7353799Z 
2023-07-25T10:57:28.7354313Z Partner and community providers are signed by their developers.
2023-07-25T10:57:28.7355507Z If you'd like to know more about provider signing, you can read about it here:
2023-07-25T10:57:28.7356512Z https://www.terraform.io/docs/cli/plugins/signing.html
2023-07-25T10:57:28.7357035Z 
2023-07-25T10:57:28.7357634Z [0m[1m[32mTerraform has been successfully initialized![0m[32m[0m
2023-07-25T10:57:28.7412332Z ##[endgroup]
.... 
2023-07-25T10:57:54.5985409Z 
2023-07-25T10:57:54.5986282Z Terraform used the selected providers to generate the following execution
2023-07-25T10:57:54.5987397Z plan. Resource actions are indicated with the following symbols:
2023-07-25T10:57:54.5988492Z   ~ update in-place
2023-07-25T10:57:54.5989133Z  <= read (data resources)
2023-07-25T10:57:54.5989520Z 
2023-07-25T10:57:54.5989982Z Terraform planned the following actions, but then encountered a problem:
2023-07-25T10:57:54.5990559Z 
2023-07-25T10:57:54.5993442Z   ~ resource "aws_lambda_function" "lambda-function" {
...
2023-07-25T10:57:54.6003969Z         # (19 unchanged attributes hidden)
2023-07-25T10:57:54.6004401Z 
2023-07-25T10:57:54.6004674Z         # (3 unchanged blocks hidden)
2023-07-25T10:57:54.6005264Z     }
2023-07-25T10:57:54.6005550Z 
2023-07-25T10:57:54.6006373Z   # module.elastic_dev.module.elastic-cloud.data.ec_stack.elastic will be read during apply
2023-07-25T10:57:54.6007463Z   # (depends on a resource or a module with changes pending)
2023-07-25T10:57:54.6008200Z  <= data "ec_stack" "elastic" {
2023-07-25T10:57:54.6008912Z       + accessible          = (known after apply)
2023-07-25T10:57:54.6010062Z       + allowlisted         = (known after apply)
2023-07-25T10:57:54.6010800Z       + apm                 = (known after apply)
2023-07-25T10:57:54.6011505Z       + elasticsearch       = (known after apply)
2023-07-25T10:57:54.6012303Z       + enterprise_search   = (known after apply)
2023-07-25T10:57:54.6013030Z       + id                  = (known after apply)
2023-07-25T10:57:54.6013705Z       + kibana              = (known after apply)
2023-07-25T10:57:54.6014377Z       + lock                = false
2023-07-25T10:57:54.6015065Z       + min_upgradable_from = (known after apply)
2023-07-25T10:57:54.6015909Z       + region              = "us-east-1"
2023-07-25T10:57:54.6016608Z       + upgradable_to       = (known after apply)
2023-07-25T10:57:54.6017336Z       + version             = (known after apply)
2023-07-25T10:57:54.6017988Z       + version_regex       = "8.8.2"
2023-07-25T10:57:54.6018572Z     }
2023-07-25T10:57:54.6018857Z 
2023-07-25T10:57:54.6019501Z Plan: 0 to add, 1 to change, 0 to destroy.
2023-07-25T10:57:54.6200585Z 
2023-07-25T10:57:54.6201144Z Error: Failed to determine whether to use node_roles
2023-07-25T10:57:54.6201480Z 
2023-07-25T10:57:54.6202145Z   with module.elastic_dev.module.elastic-cloud.ec_deployment.elasticsearch_main,
2023-07-25T10:57:54.6203130Z   on /tmp/terraform-data-dir/modules/elastic_dev/modules/elastic-cloud/elastic.tf line 11, in resource "ec_deployment" "elasticsearch_main":
2023-07-25T10:57:54.6203832Z   11: resource "ec_deployment" "elasticsearch_main" {
2023-07-25T10:57:54.6204106Z 
2023-07-25T10:57:54.6204353Z failed to parse Elasticsearch version: Version string empty

I'm not familiar with the ec provider. What is ${{ inputs.target }}? The working example appears to be running in a different directory.

Thanks for the comment! It is being run under the same directory (inputs.target points to the working directory of terraform project).