[HCP Terraform]VCS連携したWorkspaceのPlanをローカルのCLIから実行する

export TF_CLOUD_ORGANIZATION=<Organizations名>
export TF_WORKSPACE=<Workspace名>

terraform {
  required_version = ">= 1.10.2"
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.82.2"
    }
  }
  cloud {}
}

terraform plan

╷
│ Error: Invalid or missing required argument
│
│ "organization" must be set in the
│ cloud configuration or as an
│ environment variable:
│ TF_CLOUD_ORGANIZATION.
╵
╷
│ Error: Invalid workspaces configuration
│
│ Missing workspace mapping
│ strategy. Either workspace "tags"
│ or "name" is required.
│
│ The 'workspaces' block configures
│ how Terraform CLI maps its
│ workspaces for this single
│ configuration to workspaces
│ within an HCP Terraform or
│ Terraform Enterprise
│ organization. Two strategies are
│ available:
│
│ [bold]tags[reset] - A set of tags
│ used to select remote HCP
│ Terraform or Terraform Enterprise
│ workspaces to be used for this
│ single
│ configuration. New workspaces
│ will automatically be tagged with
│ these tag values. Generally, this
│ is the primary and recommended
│ strategy to use.  This option
│ conflicts with "name".
│
│ [bold]name[reset] - The name of a
│ single HCP Terraform or Terraform
│ Enterprise workspace to be used
│ with this configuration.
│ When configured, only the
│ specified workspace can be used.
│ This option conflicts with "tags"
│ and with the TF_WORKSPACE
│ environment variable.

export TF_CLOUD_ORGANIZATION=<Organizations名>
export TF_WORKSPACE=<Workspace名>

terraform plan

No changes. Your infrastructure matches the configuration.

resource "aws_instance" "main" {
  ami           = data.aws_ssm_parameter.amazonlinux_2023.value
  instance_type = "t3.micro"
  subnet_id     = module.vpc.private_subnets[0]
  tags = {
    Name = local.name
    # 自動デプロイのテスト時にコメント外す
+    Env = "test"
-    Env = "prod"
  }
}

terraform plan

Terraform will perform the following actions:

  # aws_instance.main will be updated in-place
  ~ resource "aws_instance" "main" {
        id                                   = "i-hogehoge"
      ~ tags                                 = {
          ~ "Env"  = "prod" -> "test"
            "Name" = "prod-hcp-tf-aws-book"
        }
      ~ tags_all                             = {
          ~ "Env"  = "prod" -> "test"
            # (1 unchanged element hidden)
        }
        # (38 unchanged attributes hidden)

        # (8 unchanged blocks hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

terraform apply

│ Error: Apply not allowed for workspaces with a VCS connection
│
│ A workspace that is connected to a VCS
│ requires the VCS-driven workflow to ensure
│ that the VCS remains the single source of
│ truth.