Git-Mirrors/constellation
1
0
Fork 0
mirror of https://github.com/edgelesssys/constellation.git synced 2024-10-01 01:36:09 -04:00
Code Issues Packages Projects Releases Wiki Activity

terraform: aws node groups

Browse Source
This commit is contained in:
Malte Poll 2023-06-23 17:19:43 +02:00 committed by Malte Poll
parent 6dd8a571ec
commit 22ebdace43
12 changed files with 304 additions and 170 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
cli/internal/cloudcmd/create.go
View File

@ -130,16 +130,27 @@ func (c *Creator) Create(ctx context.Context, opts CreateOptions) (clusterid.Fil
func (c *Creator) createAWS(ctx context.Context, cl terraformClient, opts CreateOptions) (idFile clusterid.File, retErr error) {
vars := terraform.AWSClusterVariables{
CommonVariables: terraform.CommonVariables{
Name: opts.Config.Name,
CountControlPlanes: opts.ControlPlaneCount,
CountWorkers: opts.WorkerCount,
StateDiskSizeGB: opts.Config.StateDiskSizeGB,
Name: opts.Config.Name,
NodeGroups: map[string]terraform.AWSNodeGroup{
"control_plane_default": {
Role: role.ControlPlane.TFString(),
StateDiskSizeGB: opts.Config.StateDiskSizeGB,
InitialCount: opts.ControlPlaneCount,
Zone: opts.Config.Provider.AWS.Zone,
InstanceType: opts.InsType,
DiskType: opts.Config.Provider.AWS.StateDiskType,
},
"worker_default": {
Role: role.Worker.TFString(),
StateDiskSizeGB: opts.Config.StateDiskSizeGB,
InitialCount: opts.WorkerCount,
Zone: opts.Config.Provider.AWS.Zone,
InstanceType: opts.InsType,
DiskType: opts.Config.Provider.AWS.StateDiskType,
},
},
StateDiskType: opts.Config.Provider.AWS.StateDiskType,
Region: opts.Config.Provider.AWS.Region,
Zone: opts.Config.Provider.AWS.Zone,
InstanceType: opts.InsType,
AMIImageID: opts.image,
IAMProfileControlPlane: opts.Config.Provider.AWS.IAMProfileControlPlane,
IAMProfileWorkerNodes: opts.Config.Provider.AWS.IAMProfileWorkerNodes,

27
cli/internal/cmd/upgradeapply.go
View File

@ -214,21 +214,28 @@ func parseTerraformUpgradeVars(cmd *cobra.Command, conf *config.Config, fetcher
return nil, fmt.Errorf("fetching image reference: %w", err)
}
commonVariables := terraform.CommonVariables{
Name: conf.Name,
StateDiskSizeGB: conf.StateDiskSizeGB,
// Ignore node count as their values are only being respected for creation
// See here: https://developer.hashicorp.com/terraform/language/meta-arguments/lifecycle#ignore_changes
}
switch conf.GetProvider() {
case cloudprovider.AWS:
vars := &terraform.AWSClusterVariables{
CommonVariables: commonVariables,
StateDiskType: conf.Provider.AWS.StateDiskType,
Name: conf.Name,
NodeGroups: map[string]terraform.AWSNodeGroup{
"control_plane_default": {
Role: role.ControlPlane.TFString(),
StateDiskSizeGB: conf.StateDiskSizeGB,
Zone: conf.Provider.AWS.Zone,
InstanceType: conf.Provider.AWS.InstanceType,
DiskType: conf.Provider.AWS.StateDiskType,
},
"worker_default": {
Role: role.Worker.TFString(),
StateDiskSizeGB: conf.StateDiskSizeGB,
Zone: conf.Provider.AWS.Zone,
InstanceType: conf.Provider.AWS.InstanceType,
DiskType: conf.Provider.AWS.StateDiskType,
},
},
Region: conf.Provider.AWS.Region,
Zone: conf.Provider.AWS.Zone,
InstanceType: conf.Provider.AWS.InstanceType,
AMIImageID: imageRef,
IAMProfileControlPlane: conf.Provider.AWS.IAMProfileControlPlane,
IAMProfileWorkerNodes: conf.Provider.AWS.IAMProfileWorkerNodes,

109
cli/internal/terraform/terraform/aws/main.tf
View File

@ -27,6 +27,25 @@ locals {
ports_verify = "30081"
ports_recovery = "9999"
ports_debugd = "4000"
target_group_arns = {
control-plane : flatten([
module.load_balancer_target_bootstrapper.target_group_arn,
module.load_balancer_target_kubernetes.target_group_arn,
module.load_balancer_target_verify.target_group_arn,
module.load_balancer_target_recovery.target_group_arn,
module.load_balancer_target_konnectivity.target_group_arn,
var.debug ? [module.load_balancer_target_debugd[0].target_group_arn] : [],
])
worker : []
}
iam_instance_profile = {
control-plane : var.iam_instance_profile_control_plane
worker : var.iam_instance_profile_worker_nodes
}
# zones are all availability zones that are used by the node groups
zones = distinct(sort([
for node_group in var.node_groups : node_group.zone
]))
tags = { constellation-uid = local.uid }
}
@ -50,15 +69,17 @@ module "public_private_subnet" {
source = "./modules/public_private_subnet"
name = local.name
vpc_id = aws_vpc.vpc.id
cidr_vpc_subnet_nodes = "192.168.178.0/24"
cidr_vpc_subnet_internet = "192.168.0.0/24"
cidr_vpc_subnet_nodes = "192.168.176.0/20"
cidr_vpc_subnet_internet = "192.168.0.0/20"
zone = var.zone
zones = local.zones
tags = local.tags
}
resource "aws_eip" "lb" {
domain = "vpc"
tags = local.tags
for_each = toset(module.public_private_subnet.all_zones)
domain = "vpc"
tags = local.tags
}
resource "aws_lb" "front_end" {
@ -67,9 +88,12 @@ resource "aws_lb" "front_end" {
load_balancer_type = "network"
tags = local.tags
subnet_mapping {
subnet_id = module.public_private_subnet.public_subnet_id
allocation_id = aws_eip.lb.id
dynamic "subnet_mapping" {
for_each = toset(module.public_private_subnet.all_zones)
content {
subnet_id = module.public_private_subnet.public_subnet_id[subnet_mapping.key]
allocation_id = aws_eip.lb[subnet_mapping.key].id
}
}
enable_cross_zone_load_balancing = true
}
@ -216,59 +240,42 @@ module "load_balancer_target_konnectivity" {
healthcheck_protocol = "TCP"
}
module "instance_group_control_plane" {
source = "./modules/instance_group"
name = local.name
role = "control-plane"
uid = local.uid
instance_type = var.instance_type
instance_count = var.control_plane_count
image_id = var.ami
state_disk_type = var.state_disk_type
state_disk_size = var.state_disk_size
target_group_arns = flatten([
module.load_balancer_target_bootstrapper.target_group_arn,
module.load_balancer_target_kubernetes.target_group_arn,
module.load_balancer_target_verify.target_group_arn,
module.load_balancer_target_recovery.target_group_arn,
module.load_balancer_target_konnectivity.target_group_arn,
var.debug ? [module.load_balancer_target_debugd[0].target_group_arn] : [],
])
module "instance_group" {
source = "./modules/instance_group"
for_each = var.node_groups
base_name = local.name
node_group_name = each.key
role = each.value.role
zone = each.value.zone
uid = local.uid
instance_type = each.value.instance_type
instance_count = each.value.instance_count
image_id = var.ami
state_disk_type = each.value.disk_type
state_disk_size = each.value.disk_size
target_group_arns = local.target_group_arns[each.value.role]
security_groups = [aws_security_group.security_group.id]
subnetwork = module.public_private_subnet.private_subnet_id
iam_instance_profile = var.iam_instance_profile_control_plane
subnetwork = module.public_private_subnet.private_subnet_id[each.value.zone]
iam_instance_profile = local.iam_instance_profile[each.value.role]
enable_snp = var.enable_snp
tags = merge(
local.tags,
{ Name = local.name },
{ constellation-role = "control-plane" },
{ constellation-role = each.value.role },
{ constellation-uid = local.uid },
{ constellation-init-secret-hash = local.initSecretHash },
{ "kubernetes.io/cluster/${local.name}" = "owned" }
)
}
module "instance_group_worker_nodes" {
source = "./modules/instance_group"
name = local.name
role = "worker"
uid = local.uid
instance_type = var.instance_type
instance_count = var.worker_count
image_id = var.ami
state_disk_type = var.state_disk_type
state_disk_size = var.state_disk_size
subnetwork = module.public_private_subnet.private_subnet_id
target_group_arns = []
security_groups = [aws_security_group.security_group.id]
iam_instance_profile = var.iam_instance_profile_worker_nodes
enable_snp = var.enable_snp
tags = merge(
local.tags,
{ Name = local.name },
{ constellation-role = "worker" },
{ constellation-uid = local.uid },
{ constellation-init-secret-hash = local.initSecretHash },
{ "kubernetes.io/cluster/${local.name}" = "owned" }
)
// TODO(AB#3248): Remove this migration after we can assume that all existing clusters have been migrated.
moved {
from = module.instance_group_control_plane
to = module.instance_group["control_plane_default"]
}
// TODO(AB#3248): Remove this migration after we can assume that all existing clusters have been migrated.
moved {
from = module.instance_group_worker_nodes
to = module.instance_group["worker_default"]
}

26
cli/internal/terraform/terraform/aws/modules/instance_group/main.tf
View File

@ -4,13 +4,21 @@ terraform {
source = "hashicorp/aws"
version = "5.1.0"
}
random = {
source = "hashicorp/random"
version = "3.5.1"
}
}
}
locals {
name = "${var.name}-${lower(var.role)}"
group_uid = random_id.uid.hex
name = "${var.base_name}-${lower(var.role)}-${local.group_uid}"
}
resource "random_id" "uid" {
byte_length = 4
}
resource "aws_launch_template" "launch_template" {
name_prefix = local.name
@ -37,18 +45,23 @@ resource "aws_launch_template" "launch_template" {
}
}
# See: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/launch_template#cpu-options
cpu_options {
# use "enabled" to enable SEV-SNP
# use "disabled" to disable SEV-SNP (but still require SNP-capable hardware)
# use null to leave the setting unset (allows non-SNP-capable hardware to be used)
amd_sev_snp = var.enable_snp ? "enabled" : null
}
lifecycle {
create_before_destroy = true
ignore_changes = [
cpu_options, # required. we cannot change the CPU options of a launch template
name_prefix, # required. Allow legacy scale sets to keep their old names
default_version, # required. update procedure creates new versions of the launch template
image_id, # required. update procedure modifies the image id externally
]
}
# See: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/launch_template#cpu-options
cpu_options {
amd_sev_snp = var.enable_snp ? "enabled" : "disabled"
}
}
resource "aws_autoscaling_group" "autoscaling_group" {
@ -74,6 +87,7 @@ resource "aws_autoscaling_group" "autoscaling_group" {
lifecycle {
create_before_destroy = true
ignore_changes = [
name, # required. Allow legacy scale sets to keep their old names
launch_template.0.version, # required. update procedure creates new versions of the launch template
min_size, # required. autoscaling modifies the instance count externally
max_size, # required. autoscaling modifies the instance count externally

12
cli/internal/terraform/terraform/aws/modules/instance_group/variables.tf
View File

@ -1,8 +1,13 @@
variable "name" {
variable "base_name" {
type = string
description = "Base name of the instance group."
}
variable "node_group_name" {
type = string
description = "Constellation name for the node group (used for configuration and CSP-independent naming)."
}
variable "role" {
type = string
description = "The role of the instance group."
@ -72,3 +77,8 @@ variable "enable_snp" {
default = true
description = "Enable AMD SEV SNP. Setting this to true sets the cpu-option AmdSevSnp to enable."
}
variable "zone" {
type = string
description = "Zone to deploy the instance group in."
}

88
cli/internal/terraform/terraform/aws/modules/public_private_subnet/main.tf
View File

@ -7,23 +7,70 @@ terraform {
}
}
locals {
# az_number is a stable mapping of az suffix to a number used for calculating the subnet cidr
az_number = {
# we start counting at 2 to have the legacy subnet before the first newly created networks
# the legacy subnet did not start at a /20 boundary
# 0 => 192.168.176.0/24 (unused private subnet cidr)
# 1 => 192.168.177.0/24 (unused private subnet cidr)
legacy = 2 # => 192.168.178.0/24 (legacy private subnet)
a = 3 # => 192.168.178.1/24 (first newly created zonal private subnet)
b = 4
c = 5
d = 6
e = 7
f = 8
g = 9
h = 10
i = 11
j = 12
k = 13
l = 14
m = 15 # => 192.168.191.0/24 (last reserved zonal private subnet cidr). In reality, AWS doesn't have that many zones in a region.
}
}
data "aws_availability_zones" "available" {
state = "available"
}
data "aws_availability_zone" "all" {
for_each = toset(data.aws_availability_zones.available.names)
name = each.key
}
resource "aws_eip" "nat" {
domain = "vpc"
tags = var.tags
for_each = toset(var.zones)
domain = "vpc"
tags = var.tags
}
resource "aws_subnet" "private" {
for_each = data.aws_availability_zone.all
vpc_id = var.vpc_id
cidr_block = var.cidr_vpc_subnet_nodes
availability_zone = var.zone
cidr_block = cidrsubnet(var.cidr_vpc_subnet_nodes, 4, local.az_number[each.value.name_suffix])
availability_zone = each.key
tags = merge(var.tags, { Name = "${var.name}-subnet-nodes" })
lifecycle {
ignore_changes = [
cidr_block, # required. Legacy subnets used fixed cidr blocks for the single zone that don't match the new scheme.
]
}
}
resource "aws_subnet" "public" {
for_each = data.aws_availability_zone.all
vpc_id = var.vpc_id
cidr_block = var.cidr_vpc_subnet_internet
availability_zone = var.zone
cidr_block = cidrsubnet(var.cidr_vpc_subnet_internet, 4, local.az_number[each.value.name_suffix])
availability_zone = each.key
tags = merge(var.tags, { Name = "${var.name}-subnet-internet" })
lifecycle {
ignore_changes = [
cidr_block, # required. Legacy subnets used fixed cidr blocks for the single zone that don't match the new scheme.
]
}
}
resource "aws_internet_gateway" "gw" {
@ -32,24 +79,27 @@ resource "aws_internet_gateway" "gw" {
}
resource "aws_nat_gateway" "gw" {
subnet_id = aws_subnet.public.id
allocation_id = aws_eip.nat.id
for_each = toset(var.zones)
subnet_id = aws_subnet.public[each.key].id
allocation_id = aws_eip.nat[each.key].id
tags = merge(var.tags, { Name = "${var.name}-nat-gateway" })
}
resource "aws_route_table" "private_nat" {
vpc_id = var.vpc_id
tags = merge(var.tags, { Name = "${var.name}-private-nat" })
for_each = toset(var.zones)
vpc_id = var.vpc_id
tags = merge(var.tags, { Name = "${var.name}-private-nat" })
route {
cidr_block = "0.0.0.0/0"
nat_gateway_id = aws_nat_gateway.gw.id
nat_gateway_id = aws_nat_gateway.gw[each.key].id
}
}
resource "aws_route_table" "public_igw" {
vpc_id = var.vpc_id
tags = merge(var.tags, { Name = "${var.name}-public-igw" })
for_each = toset(var.zones)
vpc_id = var.vpc_id
tags = merge(var.tags, { Name = "${var.name}-public-igw" })
route {
cidr_block = "0.0.0.0/0"
@ -57,12 +107,14 @@ resource "aws_route_table" "public_igw" {
}
}
resource "aws_route_table_association" "private-nat" {
subnet_id = aws_subnet.private.id
route_table_id = aws_route_table.private_nat.id
resource "aws_route_table_association" "private_nat" {
for_each = toset(var.zones)
subnet_id = aws_subnet.private[each.key].id
route_table_id = aws_route_table.private_nat[each.key].id
}
resource "aws_route_table_association" "route_to_internet" {
subnet_id = aws_subnet.public.id
route_table_id = aws_route_table.public_igw.id
for_each = toset(var.zones)
subnet_id = aws_subnet.public[each.key].id
route_table_id = aws_route_table.public_igw[each.key].id
}

16
cli/internal/terraform/terraform/aws/modules/public_private_subnet/output.tf
View File

@ -1,7 +1,19 @@
output "private_subnet_id" {
value = aws_subnet.private.id
value = {
for az in data.aws_availability_zone.all :
az.name => aws_subnet.private[az.name].id
}
}
output "public_subnet_id" {
value = aws_subnet.public.id
value = {
for az in data.aws_availability_zone.all :
az.name => aws_subnet.public[az.name].id
}
}
# all_zones is a list of all availability zones in the region
# it also contains zones that are not currently used by node groups (but might be in the future)
output "all_zones" {
value = distinct(sort([for az in data.aws_availability_zone.all : az.name]))
}

7
cli/internal/terraform/terraform/aws/modules/public_private_subnet/variables.tf
View File

@ -10,7 +10,12 @@ variable "vpc_id" {
variable "zone" {
type = string
description = "Availability zone."
description = "Main availability zone. Only used for legacy reasons."
}
variable "zones" {
type = list(string)
description = "Availability zones."
}
variable "cidr_vpc_subnet_nodes" {

2
cli/internal/terraform/terraform/aws/outputs.tf
View File

@ -1,5 +1,5 @@
output "ip" {
value = aws_eip.lb.public_ip
value = aws_eip.lb[var.zone].public_ip
}
output "uid" {

44
cli/internal/terraform/terraform/aws/variables.tf
View File

@ -1,6 +1,5 @@
variable "name" {
type = string
default = "constell"
description = "Name of your Constellation"
validation {
condition = length(var.name) < 10
@ -8,6 +7,22 @@ variable "name" {
}
}
variable "node_groups" {
type = map(object({
role = string
instance_count = optional(number)
instance_type = string
disk_size = number
disk_type = string
zone = string
}))
description = "A map of node group names to node group configurations."
validation {
condition = can([for group in var.node_groups : group.role == "control-plane" || group.role == "worker"])
error_message = "The role has to be 'control-plane' or 'worker'."
}
}
variable "iam_instance_profile_worker_nodes" {
type = string
description = "Name of the IAM instance profile for worker nodes"
@ -18,33 +33,6 @@ variable "iam_instance_profile_control_plane" {
description = "Name of the IAM instance profile for control plane nodes"
}
variable "instance_type" {
type = string
description = "Instance type for worker nodes"
}
variable "state_disk_type" {
type = string
default = "gp2"
description = "EBS disk type for the state disk of the nodes"
}
variable "state_disk_size" {
type = number
default = 30
description = "Disk size for the state disk of the nodes [GB]"
}
variable "control_plane_count" {
type = number
description = "Number of control plane nodes"
}
variable "worker_count" {
type = number
description = "Number of worker nodes"
}
variable "ami" {
type = string
description = "AMI ID"

56
cli/internal/terraform/variables.go
View File

@ -44,42 +44,46 @@ func (v *CommonVariables) String() string {
// AWSClusterVariables is user configuration for creating a cluster with Terraform on AWS.
type AWSClusterVariables struct {
// CommonVariables contains common variables.
CommonVariables
// Name of the cluster.
Name string `hcl:"name" cty:"name"`
// Region is the AWS region to use.
Region string
Region string `hcl:"region" cty:"region"`
// Zone is the AWS zone to use in the given region.
Zone string
Zone string `hcl:"zone" cty:"zone"`
// AMIImageID is the ID of the AMI image to use.
AMIImageID string
// InstanceType is the type of the EC2 instance to use.
InstanceType string
// StateDiskType is the EBS disk type to use for the state disk.
StateDiskType string
AMIImageID string `hcl:"ami" cty:"ami"`
// IAMGroupControlPlane is the IAM group to use for the control-plane nodes.
IAMProfileControlPlane string
IAMProfileControlPlane string `hcl:"iam_instance_profile_control_plane" cty:"iam_instance_profile_control_plane"`
// IAMGroupWorkerNodes is the IAM group to use for the worker nodes.
IAMProfileWorkerNodes string
IAMProfileWorkerNodes string `hcl:"iam_instance_profile_worker_nodes" cty:"iam_instance_profile_worker_nodes"`
// Debug is true if debug mode is enabled.
Debug bool
Debug bool `hcl:"debug" cty:"debug"`
// EnableSNP controls enablement of the EC2 cpu-option "AmdSevSnp".
EnableSNP bool
EnableSNP bool `hcl:"enable_snp" cty:"enable_snp"`
// NodeGroups is a map of node groups to create.
NodeGroups map[string]AWSNodeGroup `hcl:"node_groups" cty:"node_groups"`
}
// AWSNodeGroup is a node group to create on AWS.
type AWSNodeGroup struct {
// Role is the role of the node group.
Role string `hcl:"role" cty:"role"`
// StateDiskSizeGB is the size of the state disk to allocate to each node, in GB.
StateDiskSizeGB int `hcl:"disk_size" cty:"disk_size"`
// InitialCount is the initial number of nodes to create in the node group.
InitialCount int `hcl:"initial_count" cty:"initial_count"`
// Zone is the AWS availability-zone to use in the given region.
Zone string `hcl:"zone" cty:"zone"`
// InstanceType is the type of the EC2 instance to use.
InstanceType string `hcl:"instance_type" cty:"instance_type"`
// DiskType is the EBS disk type to use for the state disk.
DiskType string `hcl:"disk_type" cty:"disk_type"`
}
func (v *AWSClusterVariables) String() string {
b := &strings.Builder{}
b.WriteString(v.CommonVariables.String())
writeLinef(b, "region = %q", v.Region)
writeLinef(b, "zone = %q", v.Zone)
writeLinef(b, "ami = %q", v.AMIImageID)
writeLinef(b, "instance_type = %q", v.InstanceType)
writeLinef(b, "state_disk_type = %q", v.StateDiskType)
writeLinef(b, "iam_instance_profile_control_plane = %q", v.IAMProfileControlPlane)
writeLinef(b, "iam_instance_profile_worker_nodes = %q", v.IAMProfileWorkerNodes)
writeLinef(b, "debug = %t", v.Debug)
writeLinef(b, "enable_snp = %t", v.EnableSNP)
return b.String()
f := hclwrite.NewEmptyFile()
gohcl.EncodeIntoBody(v, f.Body())
return string(f.Bytes())
}
// AWSIAMVariables is user configuration for creating the IAM configuration with Terraform on Microsoft Azure.

62
cli/internal/terraform/variables_test.go
View File

@ -16,17 +16,28 @@ import (
func TestAWSClusterVariables(t *testing.T) {
vars := AWSClusterVariables{
CommonVariables: CommonVariables{
Name: "cluster-name",
CountControlPlanes: 1,
CountWorkers: 2,
StateDiskSizeGB: 30,
Name: "cluster-name",
NodeGroups: map[string]AWSNodeGroup{
"control_plane_default": {
Role: role.ControlPlane.TFString(),
StateDiskSizeGB: 30,
InitialCount: 1,
Zone: "eu-central-1b",
InstanceType: "x1.foo",
DiskType: "foodisk",
},
"worker_default": {
Role: role.Worker.TFString(),
StateDiskSizeGB: 30,
InitialCount: 2,
Zone: "eu-central-1c",
InstanceType: "x1.bar",
DiskType: "bardisk",
},
},
Region: "eu-central-1",
Zone: "eu-central-1a",
AMIImageID: "ami-0123456789abcdef",
InstanceType: "x1.foo",
StateDiskType: "bardisk",
IAMProfileControlPlane: "arn:aws:iam::123456789012:instance-profile/cluster-name-controlplane",
IAMProfileWorkerNodes: "arn:aws:iam::123456789012:instance-profile/cluster-name-worker",
Debug: true,
@ -34,19 +45,32 @@ func TestAWSClusterVariables(t *testing.T) {
}
// test that the variables are correctly rendered
want := `name = "cluster-name"
control_plane_count = 1
worker_count = 2
state_disk_size = 30
region = "eu-central-1"
zone = "eu-central-1a"
ami = "ami-0123456789abcdef"
instance_type = "x1.foo"
state_disk_type = "bardisk"
want := `name = "cluster-name"
region = "eu-central-1"
zone = "eu-central-1a"
ami = "ami-0123456789abcdef"
iam_instance_profile_control_plane = "arn:aws:iam::123456789012:instance-profile/cluster-name-controlplane"
iam_instance_profile_worker_nodes = "arn:aws:iam::123456789012:instance-profile/cluster-name-worker"
debug = true
enable_snp = true
iam_instance_profile_worker_nodes = "arn:aws:iam::123456789012:instance-profile/cluster-name-worker"
debug = true
enable_snp = true
node_groups = {
control_plane_default = {
disk_size = 30
disk_type = "foodisk"
initial_count = 1
instance_type = "x1.foo"
role = "control-plane"
zone = "eu-central-1b"
}
worker_default = {
disk_size = 30
disk_type = "bardisk"
initial_count = 2
instance_type = "x1.bar"
role = "worker"
zone = "eu-central-1c"
}
}
`
got := vars.String()
assert.Equal(t, want, got)