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typhoon/azure/flatcar-linux/kubernetes/workers/variables.tf
Dalton Hubble 084e8bea49 Allow custom initial node taints on worker pool nodes
* Add `node_taints` variable to worker modules to set custom
initial node taints on cloud platforms that support auto-scaling
worker pools of heterogeneous nodes (i.e. AWS, Azure, GCP)
* Worker pools could use custom `node_labels` to allowed workloads
to select among differentiated nodes, while custom `node_taints`
allows a worker pool's nodes to be tainted as special to prevent
scheduling, except by workloads that explicitly tolerate the
taint
* Expose `daemonset_tolerations` in AWS, Azure, and GCP kubernetes
cluster modules, to determine whether `kube-system` components
should tolerate the custom taint (advanced use covered in docs)

Rel: #550, #663
Closes #429
2021-04-11 15:00:11 -07:00

111 lines
2.7 KiB
HCL

variable "name" {
type = string
description = "Unique name for the worker pool"
}
# Azure
variable "region" {
type = string
description = "Must be set to the Azure Region of cluster"
}
variable "resource_group_name" {
type = string
description = "Must be set to the resource group name of cluster"
}
variable "subnet_id" {
type = string
description = "Must be set to the `worker_subnet_id` output by cluster"
}
variable "security_group_id" {
type = string
description = "Must be set to the `worker_security_group_id` output by cluster"
}
variable "backend_address_pool_id" {
type = string
description = "Must be set to the `worker_backend_address_pool_id` output by cluster"
}
# instances
variable "worker_count" {
type = number
description = "Number of instances"
default = 1
}
variable "vm_type" {
type = string
description = "Machine type for instances (see `az vm list-skus --location centralus`)"
default = "Standard_DS1_v2"
}
variable "os_image" {
type = string
description = "Channel for a Container Linux derivative (flatcar-stable, flatcar-beta, flatcar-alpha)"
default = "flatcar-stable"
validation {
condition = contains(["flatcar-stable", "flatcar-beta", "flatcar-alpha"], var.os_image)
error_message = "The os_image must be flatcar-stable, flatcar-beta, or flatcar-alpha."
}
}
variable "priority" {
type = string
description = "Set priority to Spot to use reduced cost surplus capacity, with the tradeoff that instances can be evicted at any time."
default = "Regular"
}
variable "snippets" {
type = list(string)
description = "Container Linux Config snippets"
default = []
}
# configuration
variable "kubeconfig" {
type = string
description = "Must be set to `kubeconfig` output by cluster"
}
variable "ssh_authorized_key" {
type = string
description = "SSH public key for user 'core'"
}
variable "service_cidr" {
type = string
description = <<EOD
CIDR IPv4 range to assign Kubernetes services.
The 1st IP will be reserved for kube_apiserver, the 10th IP will be reserved for coredns.
EOD
default = "10.3.0.0/16"
}
variable "node_labels" {
type = list(string)
description = "List of initial node labels"
default = []
}
variable "node_taints" {
type = list(string)
description = "List of initial node taints"
default = []
}
# unofficial, undocumented, unsupported
variable "cluster_domain_suffix" {
description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "
type = string
default = "cluster.local"
}