Provision resources in a workspace with input variables, followed by targeted destruction

[RDhar]

Use-case scenario
Provision resources in a workspace with input variables, followed by targeted destruction.

For demo purposes, I have split out plan and apply outputs to separate comments, instead of updating the same one.

#1 PR Comment: Plan configuration in a workspace with input variable file.
-tf=plan -chdir=sample_instance -workspace=dev -var-file=env/dev.tfvars

#2 PR Comment: Apply configuration in a workspace with input variable file.
-tf=apply -chdir=sample_instance -workspace=dev -var-file=env/dev.tfvars

#3 PR Comment: Plan destruction of targeted resources in a workspace with input variable file.
-tf=plan -destroy -target=aws_instance.sample,data.aws_ami.ubuntu -chdir=sample_instance -workspace=dev -var-file=env/dev.tfvars

#4 PR Comment: Apply destruction of targeted resources in a workspace with input variable file.
-tf=apply -destroy -target=aws_instance.sample,data.aws_ami.ubuntu -chdir=sample_instance -workspace=dev -var-file=env/dev.tfvars

[RDhar]

-tf=plan -chdir=sample_instance -workspace=dev -var-file=env/dev.tfvars

[github-actions]

{"tf":"plan","chdir":"sample_instance","workspace":"dev","var-file":"env/dev.tfvars"}

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

TF Via PR Comments by @RDhar via issue_comment at 2023-11-15T21:19:07Z.

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # aws_instance.sample will be created
  + resource "aws_instance" "sample" {
      + ami                                  = "ami-0f324e1cd5c4465c8"
      + arn                                  = (known after apply)
      + associate_public_ip_address          = (known after apply)
      + availability_zone                    = (known after apply)
      + cpu_core_count                       = (known after apply)
      + cpu_threads_per_core                 = (known after apply)
      + disable_api_stop                     = (known after apply)
      + disable_api_termination              = (known after apply)
      + ebs_optimized                        = (known after apply)
      + get_password_data                    = false
      + host_id                              = (known after apply)
      + host_resource_group_arn              = (known after apply)
      + iam_instance_profile                 = (known after apply)
      + id                                   = (known after apply)
      + instance_initiated_shutdown_behavior = (known after apply)
      + instance_lifecycle                   = (known after apply)
      + instance_state                       = (known after apply)
      + instance_type                        = "t2.nano"
      + ipv6_address_count                   = (known after apply)
      + ipv6_addresses                       = (known after apply)
      + key_name                             = (known after apply)
      + monitoring                           = (known after apply)
      + outpost_arn                          = (known after apply)
      + password_data                        = (known after apply)
      + placement_group                      = (known after apply)
      + placement_partition_number           = (known after apply)
      + primary_network_interface_id         = (known after apply)
      + private_dns                          = (known after apply)
      + private_ip                           = (known after apply)
      + public_dns                           = (known after apply)
      + public_ip                            = (known after apply)
      + secondary_private_ips                = (known after apply)
      + security_groups                      = (known after apply)
      + source_dest_check                    = true
      + spot_instance_request_id             = (known after apply)
      + subnet_id                            = (known after apply)
      + tags                                 = {
          + "Name" = "unique-instance"
        }
      + tags_all                             = {
          + "Environment" = "Development"
          + "Name"        = "unique-instance"
          + "Stack"       = "sample_instance"
          + "Terraform"   = "dev"
        }
      + tenancy                              = (known after apply)
      + user_data                            = (known after apply)
      + user_data_base64                     = (known after apply)
      + user_data_replace_on_change          = false
      + vpc_security_group_ids               = (known after apply)
    }

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

Changes to Outputs:
  ~ sample_instance_id = "i-07a8f66915f738df5" -> (known after apply)

[RDhar]

-tf=apply -chdir=sample_instance -workspace=dev -var-file=env/dev.tfvars

[github-actions]

{"tf":"apply","chdir":"sample_instance","workspace":"dev","var-file":"env/dev.tfvars"}

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

TF Via PR Comments by @RDhar via issue_comment at 2023-11-15T21:19:43Z.

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

Outputs:

sample_instance_id = "i-0c6e70cddd2f2cb0e"

[RDhar]

-tf=plan -destroy -target=aws_instance.sample,data.aws_ami.ubuntu -chdir=sample_instance -workspace=dev -var-file=env/dev.tfvars

[github-actions]

{"tf":"plan","destroy":true,"target":"aws_instance.sample,data.aws_ami.ubuntu","chdir":"sample_instance","workspace":"dev","var-file":"env/dev.tfvars"}

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

TF Via PR Comments by @RDhar via issue_comment at 2023-11-15T21:21:02Z.

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  - destroy

Terraform will perform the following actions:

  # aws_instance.sample will be destroyed
  - resource "aws_instance" "sample" {
      - ami                                  = "ami-0f324e1cd5c4465c8" -> null
      - arn                                  = "arn:aws:ec2:us-west-1:813676077823:instance/i-0c6e70cddd2f2cb0e" -> null
      - associate_public_ip_address          = true -> null
      - availability_zone                    = "us-west-1b" -> null
      - cpu_core_count                       = 1 -> null
      - cpu_threads_per_core                 = 1 -> null
      - disable_api_stop                     = false -> null
      - disable_api_termination              = false -> null
      - ebs_optimized                        = false -> null
      - get_password_data                    = false -> null
      - hibernation                          = false -> null
      - id                                   = "i-0c6e70cddd2f2cb0e" -> null
      - instance_initiated_shutdown_behavior = "stop" -> null
      - instance_state                       = "running" -> null
      - instance_type                        = "t2.nano" -> null
      - ipv6_address_count                   = 0 -> null
      - ipv6_addresses                       = [] -> null
      - monitoring                           = false -> null
      - placement_partition_number           = 0 -> null
      - primary_network_interface_id         = "eni-0322842607e86a941" -> null
      - private_dns                          = "ip-172-31-8-229.us-west-1.compute.internal" -> null
      - private_ip                           = "172.31.8.229" -> null
      - public_dns                           = "ec2-54-193-19-181.us-west-1.compute.amazonaws.com" -> null
      - public_ip                            = "54.193.19.181" -> null
      - secondary_private_ips                = [] -> null
      - security_groups                      = [
          - "default",
        ] -> null
      - source_dest_check                    = true -> null
      - subnet_id                            = "subnet-0f62965e88a079565" -> null
      - tags                                 = {
          - "Name" = "unique-instance"
        } -> null
      - tags_all                             = {
          - "Environment" = "Development"
          - "Name"        = "unique-instance"
          - "Stack"       = "sample_instance"
          - "Terraform"   = "dev"
        } -> null
      - tenancy                              = "default" -> null
      - user_data_replace_on_change          = false -> null
      - vpc_security_group_ids               = [
          - "sg-086df1f999f21d675",
        ] -> null

      - capacity_reservation_specification {
          - capacity_reservation_preference = "open" -> null
        }

      - cpu_options {
          - core_count       = 1 -> null
          - threads_per_core = 1 -> null
        }

      - credit_specification {
          - cpu_credits = "standard" -> null
        }

      - enclave_options {
          - enabled = false -> null
        }

      - maintenance_options {
          - auto_recovery = "default" -> null
        }

      - metadata_options {
          - http_endpoint               = "enabled" -> null
          - http_protocol_ipv6          = "disabled" -> null
          - http_put_response_hop_limit = 1 -> null
          - http_tokens                 = "optional" -> null
          - instance_metadata_tags      = "disabled" -> null
        }

      - private_dns_name_options {
          - enable_resource_name_dns_a_record    = false -> null
          - enable_resource_name_dns_aaaa_record = false -> null
          - hostname_type                        = "ip-name" -> null
        }

      - root_block_device {
          - delete_on_termination = true -> null
          - device_name           = "/dev/sda1" -> null
          - encrypted             = false -> null
          - iops                  = 100 -> null
          - tags                  = {} -> null
          - throughput            = 0 -> null
          - volume_id             = "vol-041eab10439985afb" -> null
          - volume_size           = 8 -> null
          - volume_type           = "gp2" -> null
        }
    }

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

Warning: Resource targeting is in effect

You are creating a plan with the -target option, which means that the result
of this plan may not represent all of the changes requested by the current
configuration.

The -target option is not for routine use, and is provided only for
exceptional situations such as recovering from errors or mistakes, or when
Terraform specifically suggests to use it as part of an error message.

[RDhar]

-tf=apply -destroy -target=aws_instance.sample,data.aws_ami.ubuntu -chdir=sample_instance -workspace=dev -var-file=env/dev.tfvars

[github-actions]

{"tf":"apply","destroy":true,"target":"aws_instance.sample,data.aws_ami.ubuntu","chdir":"sample_instance","workspace":"dev","var-file":"env/dev.tfvars"}

Apply complete! Resources: 0 added, 0 changed, 1 destroyed.

TF Via PR Comments by @RDhar via issue_comment at 2023-11-15T21:22:04Z.

Warning: Applied changes may be incomplete

The plan was created with the -target option in effect, so some changes
requested in the configuration may have been ignored and the output values
may not be fully updated. Run the following command to verify that no other
changes are pending:
    terraform plan
	
Note that the -target option is not suitable for routine use, and is provided
only for exceptional situations such as recovering from errors or mistakes,
or when Terraform specifically suggests to use it as part of an error
message.

Apply complete! Resources: 0 added, 0 changed, 1 destroyed.

Outputs:

sample_instance_id = "i-0c6e70cddd2f2cb0e"