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variables.tf
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variables.tf
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/*
Copyright 2019 The KubeOne Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
variable "cluster_name" {
description = "Name of the cluster"
type = string
validation {
condition = can(regex("^[a-z0-9]([-a-z0-9]*[a-z0-9])?(\\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$", var.cluster_name))
error_message = "Value of cluster_name should be lowercase and can only contain alphanumeric characters and hyphens(-)."
}
}
variable "apiserver_alternative_names" {
description = "subject alternative names for the API Server signing cert."
default = []
type = list(string)
}
variable "worker_os" {
description = "OS to run on worker machines, default to var.os"
# valid choices are:
# * ubuntu
# * centos
# * flatcar
# * rhel
# * amzn2
# * rockylinux
default = ""
type = string
}
variable "ssh_public_key_file" {
description = "SSH public key file"
default = "~/.ssh/id_rsa.pub"
type = string
}
variable "ssh_port" {
description = "SSH port to be used to provision instances"
default = 22
type = number
}
variable "ssh_username" {
description = "SSH user, used only in output"
default = ""
type = string
}
variable "ssh_private_key_file" {
description = "SSH private key file used to access instances"
default = ""
type = string
}
variable "ssh_agent_socket" {
description = "SSH Agent socket, default to grab from $SSH_AUTH_SOCK"
default = "env:SSH_AUTH_SOCK"
type = string
}
variable "ssh_hosts_keys" {
default = null
description = "A list of SSH hosts public keys to verify"
type = list(string)
}
variable "bastion_port" {
description = "Bastion SSH port"
default = 22
type = number
}
variable "bastion_user" {
description = "Bastion SSH username"
default = ""
type = string
}
variable "bastion_host_key" {
description = "Bastion SSH host public key"
default = null
type = string
}
variable "control_plane_labels" {
description = "custom labels to add (and remove) to control plane"
type = map(string)
default = {
"custom-label-to-add" = "custom-value"
# note the minus symbol suffix
"custom-label-to-remove-" = ""
}
}
variable "disable_kubeapi_loadbalancer" {
type = bool
default = false
description = "E2E tests specific variable to disable usage of any loadbalancer in front of kubeapi-server"
}
# Provider specific settings
variable "aws_region" {
default = "eu-west-3"
description = "AWS region to speak to"
type = string
}
variable "vpc_id" {
default = "default"
description = "VPC to use ('default' for default VPC)"
type = string
}
variable "control_plane_type" {
default = "t3.medium"
description = "AWS instance type"
}
variable "control_plane_volume_size" {
default = 100
description = "Size of the EBS volume, in Gb"
type = number
}
variable "worker_type" {
default = "t3.medium"
description = "instance type for workers"
type = string
}
variable "worker_volume_size" {
default = 50
description = "Size of the EBS volume, in Gb"
type = number
}
variable "bastion_type" {
default = "t3.nano"
description = "instance type for bastion"
type = string
}
variable "os" {
description = "Operating System to use in AMI filtering and MachineDeployment"
# valid choices are:
# * ubuntu
# * centos
# * rhel
# * flatcar
# * amzn
# * rockylinux
default = "ubuntu"
type = string
}
variable "ami" {
description = "AMI ID, use it to fixate control-plane AMI in order to avoid force-recreation it at later times"
default = ""
type = string
}
variable "ami_filters" {
description = "map with AMI filters"
type = map(object({
owners = list(string)
image_name = list(string)
ssh_username = string
worker_os = string
}))
default = {
ubuntu = {
owners = ["099720109477"] # Canonical
image_name = ["ubuntu/images/hvm-ssd-gp3/ubuntu-noble-24.04-amd64-server-*"]
ssh_username = "ubuntu"
worker_os = "ubuntu"
}
centos = {
owners = ["125523088429"]
image_name = ["CentOS Linux 7 x86_64*"]
ssh_username = "centos"
worker_os = "centos"
}
flatcar = {
owners = ["075585003325"] # Kinvolk
image_name = ["Flatcar-stable-*-hvm"]
ssh_username = "core"
worker_os = "flatcar"
}
rhel = {
owners = ["309956199498"] # Red Hat
image_name = ["RHEL-8*_HVM-*-x86_64-*"]
ssh_username = "ec2-user"
worker_os = "rhel"
}
rockylinux = {
owners = ["792107900819"] # RockyLinux
image_name = ["Rocky-8-EC2-*.x86_64"]
ssh_username = "rocky"
worker_os = "rockylinux"
}
amzn = {
owners = ["137112412989"] # Amazon
image_name = ["amzn2-ami-hvm-2.0.*-x86_64-gp2"]
ssh_username = "ec2-user"
worker_os = "amzn2"
}
}
}
variable "control_plane_http_put_max_hops" {
default = 3
description = "HTTP PUT response hop limit for the instance metadata requests"
type = number
}
variable "static_workers_http_put_max_hops" {
default = 3
description = "HTTP PUT response hop limit for the instance metadata requests"
type = number
}
variable "subnets_cidr" {
default = 24
description = "CIDR mask bits per subnet"
type = number
}
variable "internal_api_lb" {
default = false
description = "make kubernetes API loadbalancer internal (reachible only from inside the VPC)"
type = bool
}
variable "initial_machinedeployment_replicas" {
default = 1
description = "number of replicas per MachineDeployment"
type = number
}
variable "cluster_autoscaler_min_replicas" {
default = 0
description = "minimum number of replicas per MachineDeployment (requires cluster-autoscaler)"
type = number
}
variable "cluster_autoscaler_max_replicas" {
default = 0
description = "maximum number of replicas per MachineDeployment (requires cluster-autoscaler)"
type = number
}
variable "static_workers_count" {
description = "number of static workers"
default = 0
type = number
}
variable "initial_machinedeployment_spotinstances_max_price" {
description = "used to specify max spot instance price for initial machine-deployment"
# we intentionally set minimum max price to ensure that user specifies it explicitly
default = 0
type = number
}
variable "worker_deploy_ssh_key" {
description = "add provided ssh public key to MachineDeployments"
default = true
type = bool
}
variable "control_plane_vm_count" {
description = "number of control plane instances"
default = 3
type = number
}
variable "provisioning_utility" {
description = "provisioning utility to be used for Flatcar worker nodes"
default = ""
type = string
}
variable "initial_machinedeployment_operating_system_profile" {
default = ""
type = string
description = <<EOF
Name of operating system profile for MachineDeployments, only applicable if operating-system-manager addon is enabled.
If not specified default is used based on the OS specified for workers.
EOF
}
variable "disable_auto_update" {
description = "Disable automatic flatcar updates (and reboot)"
type = bool
default = false
}