awscc_gamelift_fleet - force replacement by mutable attributes

[wellsiau-aws]

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Terraform CLI and Terraform AWS Cloud Control Provider Version

Affected Resource(s)

• awscc_gamelift_fleet

Terraform Configuration Files

Please include all Terraform configurations required to reproduce the bug. Bug reports without a functional reproduction may be closed without investigation.

resource "awscc_gamelift_fleet" "example" {
  name              = "TFExampleFleet"
  build_id          = awscc_gamelift_build.example.id
  compute_type      = "EC2"
  ec2_instance_type = "c5.large"
  fleet_type        = "ON_DEMAND"
  description       = "example-1"
  certificate_configuration = {
    certificate_type = "DISABLED"
  }
  locations = [{
    location = "us-east-1",
    location_capacity = {
      desired_ec2_instances = 1,
      max_size = 1, 
      min_size = 0
    }
  }]
  runtime_configuration = {
    server_processes = [
      {
        concurrent_executions = 1
        launch_path           = "/local/game/gamelift-test-app"
        parameters            = "port:1936 gameSessionLengthSeconds:20"
      },

    ]
  }
}

resource "awscc_gamelift_build" "example" {
  name               = "ExampleBuild"
  version            = "1.0"
  operating_system   = "AMAZON_LINUX_2"
  server_sdk_version = "5.1.1"

  storage_location = {
    bucket   = "gamelift-test-wellsiau"
    key      = "gamelift-test-app-cpp-5.x-linux-x64-static-gcc-std.zip"
    role_arn = awscc_iam_role.example.arn
  }
}

resource "awscc_iam_role" "example" {
  role_name   = "gamelift-s3-access"
  description = "This IAM role grants Amazon GameLift access to the S3 bucket containing build files"
  assume_role_policy_document = jsonencode({
    Version = "2012-10-17"
    Statement = [
      {
        Action = "sts:AssumeRole"
        Effect = "Allow"
        Sid    = ""
        Principal = {
          Service = "gamelift.amazonaws.com"
        }
      },
    ]
  })
  managed_policy_arns  = [aws_iam_policy.example.arn]
  max_session_duration = 7200
  path                 = "/"
}

resource "aws_iam_policy" "example" {
  name = "gamelift-s3-access-policy"

  policy = jsonencode({
    Version = "2012-10-17"
    Statement = [
      {
        Effect   = "Allow"
        Action   = ["s3:*"]
        Resource = "*"
      },
    ]
  })
}

Debug Output

Expected Behavior

When changing mutable attribute such as description, I expect the resource to modify the attribute instead of re-creating it.

Actual Behavior

Resource replacement triggered by Terraform plan

Terraform will perform the following actions:

  # awscc_gamelift_fleet.example2 must be replaced
-/+ resource "awscc_gamelift_fleet" "example2" {
      + anywhere_configuration             = (known after apply)
      + apply_capacity                     = (known after apply) # forces replacement
      ~ description                        = "hi" -> "hello"
      + desired_ec2_instances              = (known after apply)
      + ec2_inbound_permissions            = (known after apply)
      ~ fleet_id                           = "fleet-9b25e3ba-8968-44c5-9697-66ffaee1fab3" -> (known after apply)
      ~ id                                 = "fleet-9b25e3ba-8968-44c5-9697-66ffaee1fab3" -> (known after apply)
      + instance_role_arn                  = (known after apply) # forces replacement
      + instance_role_credentials_provider = (known after apply) # forces replacement
      + log_paths                          = (known after apply) # forces replacement
      + max_size                           = (known after apply)
      ~ metric_groups                      = [
          - "default",
        ] -> (known after apply)
      + min_size                           = (known after apply)
        name                               = "TFExampleFleet2"
      ~ new_game_session_protection_policy = "NoProtection" -> (known after apply)
      + peer_vpc_aws_account_id            = (known after apply) # forces replacement
      + peer_vpc_id                        = (known after apply) # forces replacement
      + resource_creation_limit_policy     = (known after apply)
      ~ runtime_configuration              = {
          ~ game_session_activation_timeout_seconds = 30 -> (known after apply)
          ~ max_concurrent_game_session_activations = 2147483647 -> (known after apply)
            # (1 unchanged attribute hidden)
        }
      + scaling_policies                   = (known after apply)
      + script_id                          = (known after apply) # forces replacement
      ~ server_launch_parameters           = "port:1936 gameSessionLengthSeconds:20" -> (known after apply)
      ~ server_launch_path                 = "/local/game/gamelift-test-app" -> (known after apply)
        # (6 unchanged attributes hidden)
    }

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

Steps to Reproduce

1. terraform apply
2. modify the description attribute to something else
3. terraform plan

Important Factoids

References

• #0000

[wellsiau-aws]

We know that description is not a force-replacement attributes

  "createOnlyProperties": [
    "/properties/ApplyCapacity",
    "/properties/BuildId",
    "/properties/CertificateConfiguration",
    "/properties/EC2InstanceType",
    "/properties/FleetType",
    "/properties/InstanceRoleARN",
    "/properties/InstanceRoleCredentialsProvider",
    "/properties/LogPaths",
    "/properties/PeerVpcAwsAccountId",
    "/properties/PeerVpcId",
    "/properties/ScriptId",
    "/properties/ServerLaunchParameters",
    "/properties/ServerLaunchPath",
    "/properties/CertificateType",
    "/properties/ComputeType"
  ],

[wellsiau-aws]

relates to #1139