terraform-provider-aws: resource/aws_route_table_association: error reading Route Table Association (rtbassoc-xxx): Empty result

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Terraform CLI and Terraform AWS Provider Version

terraform version - 0.12.31 provider-aws version - 3.54.0

Affected Resource(s)

• aws_route_table_association

Terraform Configuration Files

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

    provider "aws" {
      access_key = "${var.ACCESS_KEY_ID}"
      secret_key = "${var.SECRET_ACCESS_KEY}"
      region     = "eu-west-1"
    }

    resource "aws_vpc_dhcp_options" "vpc_dhcp_options" {
      domain_name         = "eu-west-1.compute.internal"
      domain_name_servers = ["AmazonProvidedDNS"]
    }

    resource "aws_vpc" "vpc" {
      cidr_block           = "10.250.0.0/16"
      enable_dns_support   = true
      enable_dns_hostnames = true
    }

    resource "aws_vpc_dhcp_options_association" "vpc_dhcp_options_association" {
      vpc_id          = "${aws_vpc.vpc.id}"
      dhcp_options_id = "${aws_vpc_dhcp_options.vpc_dhcp_options.id}"
    }

    resource "aws_default_security_group" "default" {
      vpc_id = "${aws_vpc.vpc.id}"
    }

    resource "aws_internet_gateway" "igw" {
      vpc_id = "${aws_vpc.vpc.id}"
    }

    resource "aws_route_table" "routetable_main" {
      vpc_id = "${aws_vpc.vpc.id}"
    }

    resource "aws_route" "public" {
      route_table_id         = "${aws_route_table.routetable_main.id}"
      destination_cidr_block = "0.0.0.0/0"
      gateway_id             = "${aws_internet_gateway.igw.id}"
    }

    resource "aws_security_group" "nodes" {
      name        = "foo-nodes"
      description = "Security group for nodes"
      vpc_id      = "${aws_vpc.vpc.id}"
    }

    resource "aws_security_group_rule" "nodes_self" {
      type              = "ingress"
      from_port         = 0
      to_port           = 0
      protocol          = "-1"
      self              = true
      security_group_id = "${aws_security_group.nodes.id}"
    }

    resource "aws_security_group_rule" "nodes_tcp_all" {
      type              = "ingress"
      from_port         = 30000
      to_port           = 32767
      protocol          = "tcp"
      cidr_blocks       = ["0.0.0.0/0"]
      security_group_id = "${aws_security_group.nodes.id}"
    }

    resource "aws_security_group_rule" "nodes_udp_all" {
      type              = "ingress"
      from_port         = 30000
      to_port           = 32767
      protocol          = "udp"
      cidr_blocks       = ["0.0.0.0/0"]
      security_group_id = "${aws_security_group.nodes.id}"
    }

    resource "aws_security_group_rule" "nodes_egress_all" {
      type              = "egress"
      from_port         = 0
      to_port           = 0
      protocol          = "-1"
      cidr_blocks       = ["0.0.0.0/0"]
      security_group_id = "${aws_security_group.nodes.id}"
    }


    resource "aws_subnet" "nodes_z0" {
      vpc_id            = "${aws_vpc.vpc.id}"
      cidr_block        = "10.250.0.0/19"
      availability_zone = "eu-west-1c"
    }

    output "subnet_nodes_z0" {
      value = "${aws_subnet.nodes_z0.id}"
    }

    resource "aws_subnet" "private_utility_z0" {
      vpc_id            = "${aws_vpc.vpc.id}"
      cidr_block        = "10.250.112.0/22"
      availability_zone = "eu-west-1c"
    }

    resource "aws_security_group_rule" "nodes_tcp_internal_z0" {
      type              = "ingress"
      from_port         = 30000
      to_port           = 32767
      protocol          = "tcp"
      cidr_blocks       = ["10.250.112.0/22"]
      security_group_id = "${aws_security_group.nodes.id}"
    }

    resource "aws_security_group_rule" "nodes_udp_internal_z0" {
      type              = "ingress"
      from_port         = 30000
      to_port           = 32767
      protocol          = "udp"
      cidr_blocks       = ["10.250.112.0/22"]
      security_group_id = "${aws_security_group.nodes.id}"
    }

    resource "aws_subnet" "public_utility_z0" {
      vpc_id            = "${aws_vpc.vpc.id}"
      cidr_block        = "10.250.96.0/22"
      availability_zone = "eu-west-1c"
    }

    output "subnet_public_utility_z0" {
      value = "${aws_subnet.public_utility_z0.id}"
    }

    resource "aws_security_group_rule" "nodes_tcp_public_z0" {
      type              = "ingress"
      from_port         = 30000
      to_port           = 32767
      protocol          = "tcp"
      cidr_blocks       = ["10.250.96.0/22"]
      security_group_id = "${aws_security_group.nodes.id}"
    }

    resource "aws_security_group_rule" "nodes_udp_public_z0" {
      type              = "ingress"
      from_port         = 30000
      to_port           = 32767
      protocol          = "udp"
      cidr_blocks       = ["10.250.96.0/22"]
      security_group_id = "${aws_security_group.nodes.id}"
    }

    resource "aws_eip" "eip_natgw_z0" {
      vpc = true
    }

    resource "aws_nat_gateway" "natgw_z0" {
      allocation_id = "${aws_eip.eip_natgw_z0.id}"
      subnet_id     = "${aws_subnet.public_utility_z0.id}"
    }

    resource "aws_route_table" "routetable_private_utility_z0" {
      vpc_id = "${aws_vpc.vpc.id}"
    }

    resource "aws_route" "private_utility_z0_nat" {
      route_table_id         = "${aws_route_table.routetable_private_utility_z0.id}"
      destination_cidr_block = "0.0.0.0/0"
      nat_gateway_id         = "${aws_nat_gateway.natgw_z0.id}"

      timeouts {
        create = "5m"
      }
    }

    resource "aws_route_table_association" "routetable_private_utility_z0_association_private_utility_z0" {
      subnet_id      = "${aws_subnet.private_utility_z0.id}"
      route_table_id = "${aws_route_table.routetable_private_utility_z0.id}"
    }

    resource "aws_route_table_association" "routetable_main_association_public_utility_z0" {
      subnet_id      = "${aws_subnet.public_utility_z0.id}"
      route_table_id = "${aws_route_table.routetable_main.id}"
    }

    resource "aws_route_table_association" "routetable_private_utility_z0_association_nodes_z0" {
      subnet_id      = "${aws_subnet.nodes_z0.id}"
      route_table_id = "${aws_route_table.routetable_private_utility_z0.id}"
    }


    //=====================================================================
    //= IAM instance profiles
    //=====================================================================

    resource "aws_iam_role" "bastions" {
      name = "foo-bastions"
      path = "/"

      assume_role_policy = <<EOF
    {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Principal": {
            "Service": "ec2.amazonaws.com"
          },
          "Action": "sts:AssumeRole"
        }
      ]
    }
    EOF
    }

    resource "aws_iam_instance_profile" "bastions" {
      name = "foo-bastions"
      role = "${aws_iam_role.bastions.name}"
    }

    resource "aws_iam_role_policy" "bastions" {
      name = "foo-bastions"
      role = "${aws_iam_role.bastions.id}"

      policy = <<EOF
    {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Action": [
            "ec2:DescribeRegions"
          ],
          "Resource": [
            "*"
          ]
        }
      ]
    }
    EOF
    }

    resource "aws_iam_role" "nodes" {
      name = "foo-nodes"
      path = "/"

      assume_role_policy = <<EOF
    {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Principal": {
            "Service": "ec2.amazonaws.com"
          },
          "Action": "sts:AssumeRole"
        }
      ]
    }
    EOF
    }

    resource "aws_iam_instance_profile" "nodes" {
      name = "foo-nodes"
      role = "${aws_iam_role.nodes.name}"
    }

    resource "aws_iam_role_policy" "nodes" {
      name = "foo-nodes"
      role = "${aws_iam_role.nodes.id}"

      policy = <<EOF
    {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Action": [
            "ec2:DescribeInstances"
          ],
          "Resource": [
            "*"
          ]
        },
        {
          "Effect": "Allow",
          "Action": [
            "ecr:GetAuthorizationToken",
            "ecr:BatchCheckLayerAvailability",
            "ecr:GetDownloadUrlForLayer",
            "ecr:GetRepositoryPolicy",
            "ecr:DescribeRepositories",
            "ecr:ListImages",
            "ecr:BatchGetImage"
          ],
          "Resource": [
            "*"
          ]
        }
      ]
    }
    EOF
    }

    //=====================================================================
    //= EC2 Key Pair
    //=====================================================================

    resource "aws_key_pair" "kubernetes" {
      key_name   = "foo-ssh-publickey"
      public_key = "ssh-rsa bar"
    }

    //=====================================================================
    //= Output variables
    //=====================================================================

    output "vpc_id" {
      value = "${aws_vpc.vpc.id}"
    }

    output "iamInstanceProfileNodes" {
      value = "${aws_iam_instance_profile.nodes.name}"
    }

    output "keyName" {
      value = "${aws_key_pair.kubernetes.key_name}"
    }

    output "security_group_nodes" {
      value = "${aws_security_group.nodes.id}"
    }

    output "nodes_role_arn" {
      value = "${aws_iam_role.nodes.arn}"
    }

Debug Output

Panic Output

Expected Behavior

Actual Behavior

Initializing the backend...

Initializing provider plugins...

The following providers do not have any version constraints in configuration,
so the latest version was installed.

To prevent automatic upgrades to new major versions that may contain breaking
changes, it is recommended to add version = "..." constraints to the
corresponding provider blocks in configuration, with the constraint strings
suggested below.

* provider.aws: version = "~> 3.54"

Terraform has been successfully initialized!

You may now begin working with Terraform. Try running "terraform plan" to see
any changes that are required for your infrastructure. All Terraform commands
should now work.

If you ever set or change modules or backend configuration for Terraform,
rerun this command to reinitialize your working directory. If you forget, other
commands will detect it and remind you to do so if necessary.

aws_key_pair.kubernetes: Creating...
### Creation logs are omitted

* error reading Route Table Association (rtbassoc-xxx): Empty result
  on tf/main.tf line 374, in resource "aws_route_table_association" "routetable_private_utility_z1_association_nodes_z1":
    374: resource "aws_route_table_association" "routetable_private_utility_z1_association_nodes_z1" {

Steps to Reproduce

1. terraform apply the configuration from above

2. Make sure that for heavily used AWS account, it may fail with the above error:

* error reading Route Table Association (rtbassoc-xxx): Empty result
  on tf/main.tf line 374, in resource "aws_route_table_association" "routetable_private_utility_z1_association_nodes_z1":
    374: resource "aws_route_table_association" "routetable_private_utility_z1_association_nodes_z1" {

Maybe also cloud provider request limits and throttling can lead to this error? Can this issue be related to the eventual consistency model of the AWS EC2 API (hence related to #16796)?

Important Factoids

References

• #0000