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terraform-azurerm-aks
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terraform-azurerm-aks/variables.tf

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variable "resource_group_name" {
type = string
description = "The resource group name to be imported"
}
variable "aci_connector_linux_enabled" {
type = bool
default = false
description = "Enable Virtual Node pool"
}
variable "aci_connector_linux_subnet_name" {
type = string
default = null
description = "(Optional) aci_connector_linux subnet name"
}
variable "admin_username" {
type = string
default = null
description = "The username of the local administrator to be created on the Kubernetes cluster. Set this variable to `null` to turn off the cluster's `linux_profile`. Changing this forces a new resource to be created."
}
variable "agents_availability_zones" {
type = list(string)
default = null
description = "(Optional) A list of Availability Zones across which the Node Pool should be spread. Changing this forces a new resource to be created."
}
variable "agents_count" {
type = number
default = 2
description = "The number of Agents that should exist in the Agent Pool. Please set `agents_count` `null` while `enable_auto_scaling` is `true` to avoid possible `agents_count` changes."
}
variable "agents_labels" {
type = map(string)
default = {}
description = "(Optional) A map of Kubernetes labels which should be applied to nodes in the Default Node Pool. Changing this forces a new resource to be created."
}
variable "agents_max_count" {
type = number
default = null
description = "Maximum number of nodes in a pool"
}
variable "agents_max_pods" {
type = number
default = null
description = "(Optional) The maximum number of pods that can run on each agent. Changing this forces a new resource to be created."
}
variable "agents_min_count" {
type = number
default = null
description = "Minimum number of nodes in a pool"
}
variable "agents_pool_kubelet_configs" {
type = list(object({
cpu_manager_policy = optional(string)
cpu_cfs_quota_enabled = optional(bool, true)
cpu_cfs_quota_period = optional(string)
image_gc_high_threshold = optional(number)
image_gc_low_threshold = optional(number)
topology_manager_policy = optional(string)
allowed_unsafe_sysctls = optional(set(string))
container_log_max_size_mb = optional(number)
container_log_max_line = optional(number)
pod_max_pid = optional(number)
}))
default = []
description = <<-EOT
list(object({
cpu_manager_policy = (Optional) Specifies the CPU Manager policy to use. Possible values are `none` and `static`, Changing this forces a new resource to be created.
cpu_cfs_quota_enabled = (Optional) Is CPU CFS quota enforcement for containers enabled? Changing this forces a new resource to be created.
cpu_cfs_quota_period = (Optional) Specifies the CPU CFS quota period value. Changing this forces a new resource to be created.
image_gc_high_threshold = (Optional) Specifies the percent of disk usage above which image garbage collection is always run. Must be between `0` and `100`. Changing this forces a new resource to be created.
image_gc_low_threshold = (Optional) Specifies the percent of disk usage lower than which image garbage collection is never run. Must be between `0` and `100`. Changing this forces a new resource to be created.
topology_manager_policy = (Optional) Specifies the Topology Manager policy to use. Possible values are `none`, `best-effort`, `restricted` or `single-numa-node`. Changing this forces a new resource to be created.
allowed_unsafe_sysctls = (Optional) Specifies the allow list of unsafe sysctls command or patterns (ending in `*`). Changing this forces a new resource to be created.
container_log_max_size_mb = (Optional) Specifies the maximum size (e.g. 10MB) of container log file before it is rotated. Changing this forces a new resource to be created.
container_log_max_line = (Optional) Specifies the maximum number of container log files that can be present for a container. must be at least 2. Changing this forces a new resource to be created.
pod_max_pid = (Optional) Specifies the maximum number of processes per pod. Changing this forces a new resource to be created.
}))
EOT
nullable = false
}
variable "agents_pool_linux_os_configs" {
type = list(object({
sysctl_configs = optional(list(object({
fs_aio_max_nr = optional(number)
fs_file_max = optional(number)
fs_inotify_max_user_watches = optional(number)
fs_nr_open = optional(number)
kernel_threads_max = optional(number)
net_core_netdev_max_backlog = optional(number)
net_core_optmem_max = optional(number)
net_core_rmem_default = optional(number)
net_core_rmem_max = optional(number)
net_core_somaxconn = optional(number)
net_core_wmem_default = optional(number)
net_core_wmem_max = optional(number)
net_ipv4_ip_local_port_range_min = optional(number)
net_ipv4_ip_local_port_range_max = optional(number)
net_ipv4_neigh_default_gc_thresh1 = optional(number)
net_ipv4_neigh_default_gc_thresh2 = optional(number)
net_ipv4_neigh_default_gc_thresh3 = optional(number)
net_ipv4_tcp_fin_timeout = optional(number)
net_ipv4_tcp_keepalive_intvl = optional(number)
net_ipv4_tcp_keepalive_probes = optional(number)
net_ipv4_tcp_keepalive_time = optional(number)
net_ipv4_tcp_max_syn_backlog = optional(number)
net_ipv4_tcp_max_tw_buckets = optional(number)
net_ipv4_tcp_tw_reuse = optional(bool)
net_netfilter_nf_conntrack_buckets = optional(number)
net_netfilter_nf_conntrack_max = optional(number)
vm_max_map_count = optional(number)
vm_swappiness = optional(number)
vm_vfs_cache_pressure = optional(number)
})), [])
transparent_huge_page_enabled = optional(string)
transparent_huge_page_defrag = optional(string)
swap_file_size_mb = optional(number)
}))
default = []
description = <<-EOT
list(object({
sysctl_configs = optional(list(object({
fs_aio_max_nr = (Optional) The sysctl setting fs.aio-max-nr. Must be between `65536` and `6553500`. Changing this forces a new resource to be created.
fs_file_max = (Optional) The sysctl setting fs.file-max. Must be between `8192` and `12000500`. Changing this forces a new resource to be created.
fs_inotify_max_user_watches = (Optional) The sysctl setting fs.inotify.max_user_watches. Must be between `781250` and `2097152`. Changing this forces a new resource to be created.
fs_nr_open = (Optional) The sysctl setting fs.nr_open. Must be between `8192` and `20000500`. Changing this forces a new resource to be created.
kernel_threads_max = (Optional) The sysctl setting kernel.threads-max. Must be between `20` and `513785`. Changing this forces a new resource to be created.
net_core_netdev_max_backlog = (Optional) The sysctl setting net.core.netdev_max_backlog. Must be between `1000` and `3240000`. Changing this forces a new resource to be created.
net_core_optmem_max = (Optional) The sysctl setting net.core.optmem_max. Must be between `20480` and `4194304`. Changing this forces a new resource to be created.
net_core_rmem_default = (Optional) The sysctl setting net.core.rmem_default. Must be between `212992` and `134217728`. Changing this forces a new resource to be created.
net_core_rmem_max = (Optional) The sysctl setting net.core.rmem_max. Must be between `212992` and `134217728`. Changing this forces a new resource to be created.
net_core_somaxconn = (Optional) The sysctl setting net.core.somaxconn. Must be between `4096` and `3240000`. Changing this forces a new resource to be created.
net_core_wmem_default = (Optional) The sysctl setting net.core.wmem_default. Must be between `212992` and `134217728`. Changing this forces a new resource to be created.
net_core_wmem_max = (Optional) The sysctl setting net.core.wmem_max. Must be between `212992` and `134217728`. Changing this forces a new resource to be created.
net_ipv4_ip_local_port_range_min = (Optional) The sysctl setting net.ipv4.ip_local_port_range max value. Must be between `1024` and `60999`. Changing this forces a new resource to be created.
net_ipv4_ip_local_port_range_max = (Optional) The sysctl setting net.ipv4.ip_local_port_range min value. Must be between `1024` and `60999`. Changing this forces a new resource to be created.
net_ipv4_neigh_default_gc_thresh1 = (Optional) The sysctl setting net.ipv4.neigh.default.gc_thresh1. Must be between `128` and `80000`. Changing this forces a new resource to be created.
net_ipv4_neigh_default_gc_thresh2 = (Optional) The sysctl setting net.ipv4.neigh.default.gc_thresh2. Must be between `512` and `90000`. Changing this forces a new resource to be created.
net_ipv4_neigh_default_gc_thresh3 = (Optional) The sysctl setting net.ipv4.neigh.default.gc_thresh3. Must be between `1024` and `100000`. Changing this forces a new resource to be created.
net_ipv4_tcp_fin_timeout = (Optional) The sysctl setting net.ipv4.tcp_fin_timeout. Must be between `5` and `120`. Changing this forces a new resource to be created.
net_ipv4_tcp_keepalive_intvl = (Optional) The sysctl setting net.ipv4.tcp_keepalive_intvl. Must be between `10` and `75`. Changing this forces a new resource to be created.
net_ipv4_tcp_keepalive_probes = (Optional) The sysctl setting net.ipv4.tcp_keepalive_probes. Must be between `1` and `15`. Changing this forces a new resource to be created.
net_ipv4_tcp_keepalive_time = (Optional) The sysctl setting net.ipv4.tcp_keepalive_time. Must be between `30` and `432000`. Changing this forces a new resource to be created.
net_ipv4_tcp_max_syn_backlog = (Optional) The sysctl setting net.ipv4.tcp_max_syn_backlog. Must be between `128` and `3240000`. Changing this forces a new resource to be created.
net_ipv4_tcp_max_tw_buckets = (Optional) The sysctl setting net.ipv4.tcp_max_tw_buckets. Must be between `8000` and `1440000`. Changing this forces a new resource to be created.
net_ipv4_tcp_tw_reuse = (Optional) The sysctl setting net.ipv4.tcp_tw_reuse. Changing this forces a new resource to be created.
net_netfilter_nf_conntrack_buckets = (Optional) The sysctl setting net.netfilter.nf_conntrack_buckets. Must be between `65536` and `147456`. Changing this forces a new resource to be created.
net_netfilter_nf_conntrack_max = (Optional) The sysctl setting net.netfilter.nf_conntrack_max. Must be between `131072` and `1048576`. Changing this forces a new resource to be created.
vm_max_map_count = (Optional) The sysctl setting vm.max_map_count. Must be between `65530` and `262144`. Changing this forces a new resource to be created.
vm_swappiness = (Optional) The sysctl setting vm.swappiness. Must be between `0` and `100`. Changing this forces a new resource to be created.
vm_vfs_cache_pressure = (Optional) The sysctl setting vm.vfs_cache_pressure. Must be between `0` and `100`. Changing this forces a new resource to be created.
})), [])
transparent_huge_page_enabled = (Optional) Specifies the Transparent Huge Page enabled configuration. Possible values are `always`, `madvise` and `never`. Changing this forces a new resource to be created.
transparent_huge_page_defrag = (Optional) specifies the defrag configuration for Transparent Huge Page. Possible values are `always`, `defer`, `defer+madvise`, `madvise` and `never`. Changing this forces a new resource to be created.
swap_file_size_mb = (Optional) Specifies the size of the swap file on each node in MB. Changing this forces a new resource to be created.
}))
EOT
nullable = false
}
variable "agents_pool_max_surge" {
type = string
default = "10%"
description = "The maximum number or percentage of nodes which will be added to the Default Node Pool size during an upgrade."
}
variable "agents_pool_name" {
type = string
default = "nodepool"
description = "The default Azure AKS agentpool (nodepool) name."
nullable = false
}
variable "agents_proximity_placement_group_id" {
type = string
default = null
description = "(Optional) The ID of the Proximity Placement Group of the default Azure AKS agentpool (nodepool). Changing this forces a new resource to be created."
}
variable "agents_size" {
type = string
default = "Standard_D2s_v3"
description = "The default virtual machine size for the Kubernetes agents. Changing this without specifying `var.temporary_name_for_rotation` forces a new resource to be created."
}
variable "agents_tags" {
type = map(string)
default = {}
description = "(Optional) A mapping of tags to assign to the Node Pool."
}
variable "agents_taints" {
type = list(string)
default = null
description = "(Optional) A list of the taints added to new nodes during node pool create and scale. Changing this forces a new resource to be created."
}
variable "agents_type" {
type = string
default = "VirtualMachineScaleSets"
description = "(Optional) The type of Node Pool which should be created. Possible values are AvailabilitySet and VirtualMachineScaleSets. Defaults to VirtualMachineScaleSets."
}
variable "api_server_authorized_ip_ranges" {
type = set(string)
default = null
description = "(Optional) The IP ranges to allow for incoming traffic to the server nodes."
}
variable "api_server_subnet_id" {
type = string
default = null
description = "(Optional) The ID of the Subnet where the API server endpoint is delegated to."
}
variable "attached_acr_id_map" {
type = map(string)
default = {}
description = "Azure Container Registry ids that need an authentication mechanism with Azure Kubernetes Service (AKS). Map key must be static string as acr's name, the value is acr's resource id. Changing this forces some new resources to be created."
nullable = false
}
variable "auto_scaler_profile_balance_similar_node_groups" {
type = bool
default = false
description = "Detect similar node groups and balance the number of nodes between them. Defaults to `false`."
}
variable "auto_scaler_profile_empty_bulk_delete_max" {
type = number
default = 10
description = "Maximum number of empty nodes that can be deleted at the same time. Defaults to `10`."
}
variable "auto_scaler_profile_enabled" {
type = bool
default = false
description = "Enable configuring the auto scaler profile"
nullable = false
}
variable "auto_scaler_profile_expander" {
type = string
default = "random"
description = "Expander to use. Possible values are `least-waste`, `priority`, `most-pods` and `random`. Defaults to `random`."
validation {
condition = contains(["least-waste", "most-pods", "priority", "random"], var.auto_scaler_profile_expander)
error_message = "Must be either `least-waste`, `most-pods`, `priority` or `random`."
}
}
variable "auto_scaler_profile_max_graceful_termination_sec" {
type = string
default = "600"
description = "Maximum number of seconds the cluster autoscaler waits for pod termination when trying to scale down a node. Defaults to `600`."
}
variable "auto_scaler_profile_max_node_provisioning_time" {
type = string
default = "15m"
description = "Maximum time the autoscaler waits for a node to be provisioned. Defaults to `15m`."
}
variable "auto_scaler_profile_max_unready_nodes" {
type = number
default = 3
description = "Maximum Number of allowed unready nodes. Defaults to `3`."
}
variable "auto_scaler_profile_max_unready_percentage" {
type = number
default = 45
description = "Maximum percentage of unready nodes the cluster autoscaler will stop if the percentage is exceeded. Defaults to `45`."
}
variable "auto_scaler_profile_new_pod_scale_up_delay" {
type = string
default = "10s"
description = "For scenarios like burst/batch scale where you don't want CA to act before the kubernetes scheduler could schedule all the pods, you can tell CA to ignore unscheduled pods before they're a certain age. Defaults to `10s`."
}
variable "auto_scaler_profile_scale_down_delay_after_add" {
type = string
default = "10m"
description = "How long after the scale up of AKS nodes the scale down evaluation resumes. Defaults to `10m`."
}
variable "auto_scaler_profile_scale_down_delay_after_delete" {
type = string
default = null
description = "How long after node deletion that scale down evaluation resumes. Defaults to the value used for `scan_interval`."
}
variable "auto_scaler_profile_scale_down_delay_after_failure" {
type = string
default = "3m"
description = "How long after scale down failure that scale down evaluation resumes. Defaults to `3m`."
}
variable "auto_scaler_profile_scale_down_unneeded" {
type = string
default = "10m"
description = "How long a node should be unneeded before it is eligible for scale down. Defaults to `10m`."
}
variable "auto_scaler_profile_scale_down_unready" {
type = string
default = "20m"
description = "How long an unready node should be unneeded before it is eligible for scale down. Defaults to `20m`."
}
variable "auto_scaler_profile_scale_down_utilization_threshold" {
type = string
default = "0.5"
description = "Node utilization level, defined as sum of requested resources divided by capacity, below which a node can be considered for scale down. Defaults to `0.5`."
}
variable "auto_scaler_profile_scan_interval" {
type = string
default = "10s"
description = "How often the AKS Cluster should be re-evaluated for scale up/down. Defaults to `10s`."
}
variable "auto_scaler_profile_skip_nodes_with_local_storage" {
type = bool
default = true
description = "If `true` cluster autoscaler will never delete nodes with pods with local storage, for example, EmptyDir or HostPath. Defaults to `true`."
}
variable "auto_scaler_profile_skip_nodes_with_system_pods" {
type = bool
default = true
description = "If `true` cluster autoscaler will never delete nodes with pods from kube-system (except for DaemonSet or mirror pods). Defaults to `true`."
}
variable "automatic_channel_upgrade" {
type = string
default = null
description = "(Optional) The upgrade channel for this Kubernetes Cluster. Possible values are `patch`, `rapid`, `node-image` and `stable`. By default automatic-upgrades are turned off. Note that you cannot specify the patch version using `kubernetes_version` or `orchestrator_version` when using the `patch` upgrade channel. See [the documentation](https://learn.microsoft.com/en-us/azure/aks/auto-upgrade-cluster) for more information"
validation {
condition = var.automatic_channel_upgrade == null ? true : contains([
"patch", "stable", "rapid", "node-image"
], var.automatic_channel_upgrade)
error_message = "`automatic_channel_upgrade`'s possible values are `patch`, `stable`, `rapid` or `node-image`."
}
}
variable "azure_policy_enabled" {
type = bool
default = false
description = "Enable Azure Policy Addon."
}
variable "brown_field_application_gateway_for_ingress" {
type = object({
id = string
subnet_id = string
})
default = null
description = <<-EOT
[Definition of `brown_field`](https://learn.microsoft.com/en-us/azure/application-gateway/tutorial-ingress-controller-add-on-existing)
* `id` - (Required) The ID of the Application Gateway that be used as cluster ingress.
* `subnet_id` - (Required) The ID of the Subnet which the Application Gateway is connected to. Must be set when `create_role_assignments` is `true`.
EOT
}
variable "client_id" {
type = string
default = ""
description = "(Optional) The Client ID (appId) for the Service Principal used for the AKS deployment"
nullable = false
}
variable "client_secret" {
type = string
default = ""
description = "(Optional) The Client Secret (password) for the Service Principal used for the AKS deployment"
nullable = false
}
variable "cluster_log_analytics_workspace_name" {
type = string
default = null
description = "(Optional) The name of the Analytics workspace"
}
variable "cluster_name" {
type = string
default = null
description = "(Optional) The name for the AKS resources created in the specified Azure Resource Group. This variable overwrites the 'prefix' var (The 'prefix' var will still be applied to the dns_prefix if it is set)"
}
variable "cluster_name_random_suffix" {
type = bool
default = false
description = "Whether to add a random suffix on Aks cluster's name or not. `azurerm_kubernetes_cluster` resource defined in this module is `create_before_destroy = true` implicity now(described [here](https://github.com/Azure/terraform-azurerm-aks/issues/389)), without this random suffix we'll not be able to recreate this cluster directly due to the naming conflict."
nullable = false
}
variable "confidential_computing" {
type = object({
sgx_quote_helper_enabled = bool
})
default = null
description = "(Optional) Enable Confidential Computing."
}
variable "create_role_assignment_network_contributor" {
type = bool
default = false
description = "(Deprecated) Create a role assignment for the AKS Service Principal to be a Network Contributor on the subnets used for the AKS Cluster"
nullable = false
}
variable "create_role_assignments_for_application_gateway" {
type = bool
default = true
description = "(Optional) Whether to create the corresponding role assignments for application gateway or not. Defaults to `true`."
nullable = false
}
variable "default_node_pool_fips_enabled" {
type = bool
default = null
description = " (Optional) Should the nodes in this Node Pool have Federal Information Processing Standard enabled? Changing this forces a new resource to be created."
}
variable "disk_encryption_set_id" {
type = string
default = null
description = "(Optional) The ID of the Disk Encryption Set which should be used for the Nodes and Volumes. More information [can be found in the documentation](https://docs.microsoft.com/azure/aks/azure-disk-customer-managed-keys). Changing this forces a new resource to be created."
}
variable "ebpf_data_plane" {
type = string
default = null
description = "(Optional) Specifies the eBPF data plane used for building the Kubernetes network. Possible value is `cilium`. Changing this forces a new resource to be created."
}
variable "enable_auto_scaling" {
type = bool
default = false
description = "Enable node pool autoscaling"
}
variable "enable_host_encryption" {
type = bool
default = false
description = "Enable Host Encryption for default node pool. Encryption at host feature must be enabled on the subscription: https://docs.microsoft.com/azure/virtual-machines/linux/disks-enable-host-based-encryption-cli"
}
variable "enable_node_public_ip" {
type = bool
default = false
description = "(Optional) Should nodes in this Node Pool have a Public IP Address? Defaults to false."
}
variable "green_field_application_gateway_for_ingress" {
type = object({
name = optional(string)
subnet_cidr = optional(string)
subnet_id = optional(string)
})
default = null
description = <<-EOT
[Definition of `green_field`](https://learn.microsoft.com/en-us/azure/application-gateway/tutorial-ingress-controller-add-on-new)
* `name` - (Optional) The name of the Application Gateway to be used or created in the Nodepool Resource Group, which in turn will be integrated with the ingress controller of this Kubernetes Cluster.
* `subnet_cidr` - (Optional) The subnet CIDR to be used to create an Application Gateway, which in turn will be integrated with the ingress controller of this Kubernetes Cluster.
* `subnet_id` - (Optional) The ID of the subnet on which to create an Application Gateway, which in turn will be integrated with the ingress controller of this Kubernetes Cluster.
EOT
validation {
condition = var.green_field_application_gateway_for_ingress == null ? true : (can(coalesce(var.green_field_application_gateway_for_ingress.subnet_id, var.green_field_application_gateway_for_ingress.subnet_cidr)))
error_message = "One of `subnet_cidr` and `subnet_id` must be specified."
}
}
variable "http_proxy_config" {
type = object({
http_proxy = optional(string)
https_proxy = optional(string)
no_proxy = optional(list(string))
trusted_ca = optional(string)
})
default = null
description = <<-EOT
optional(object({
http_proxy = (Optional) The proxy address to be used when communicating over HTTP.
https_proxy = (Optional) The proxy address to be used when communicating over HTTPS.
no_proxy = (Optional) The list of domains that will not use the proxy for communication. Note: If you specify the `default_node_pool.0.vnet_subnet_id`, be sure to include the Subnet CIDR in the `no_proxy` list. Note: You may wish to use Terraform's `ignore_changes` functionality to ignore the changes to this field.
trusted_ca = (Optional) The base64 encoded alternative CA certificate content in PEM format.
}))
Once you have set only one of `http_proxy` and `https_proxy`, this config would be used for both `http_proxy` and `https_proxy` to avoid a configuration drift.
EOT
validation {
condition = var.http_proxy_config == null ? true : can(coalesce(var.http_proxy_config.http_proxy, var.http_proxy_config.https_proxy))
error_message = "`http_proxy` and `https_proxy` cannot be both empty."
}
}
variable "identity_ids" {
type = list(string)
default = null
description = "(Optional) Specifies a list of User Assigned Managed Identity IDs to be assigned to this Kubernetes Cluster."
}
variable "identity_type" {
type = string
default = "SystemAssigned"
description = "(Optional) The type of identity used for the managed cluster. Conflicts with `client_id` and `client_secret`. Possible values are `SystemAssigned` and `UserAssigned`. If `UserAssigned` is set, an `identity_ids` must be set as well."
validation {
condition = var.identity_type == "SystemAssigned" || var.identity_type == "UserAssigned"
error_message = "`identity_type`'s possible values are `SystemAssigned` and `UserAssigned`"
}
}
variable "image_cleaner_enabled" {
type = bool
default = false
description = "(Optional) Specifies whether Image Cleaner is enabled."
}
variable "image_cleaner_interval_hours" {
type = number
default = 48
description = "(Optional) Specifies the interval in hours when images should be cleaned up. Defaults to `48`."
}
variable "key_vault_secrets_provider_enabled" {
type = bool
default = false
description = "(Optional) Whether to use the Azure Key Vault Provider for Secrets Store CSI Driver in an AKS cluster. For more details: https://docs.microsoft.com/en-us/azure/aks/csi-secrets-store-driver"
nullable = false
}
variable "kms_enabled" {
type = bool
default = false
description = "(Optional) Enable Azure KeyVault Key Management Service."
nullable = false
}
variable "kms_key_vault_key_id" {
type = string
default = null
description = "(Optional) Identifier of Azure Key Vault key. When Azure Key Vault key management service is enabled, this field is required and must be a valid key identifier."
}
variable "kms_key_vault_network_access" {
type = string
default = "Public"
description = "(Optional) Network Access of Azure Key Vault. Possible values are: `Private` and `Public`."
validation {
condition = contains(["Private", "Public"], var.kms_key_vault_network_access)
error_message = "Possible values are `Private` and `Public`"
}
}
variable "kubelet_identity" {
type = object({
client_id = optional(string)
object_id = optional(string)
user_assigned_identity_id = optional(string)
})
default = null
description = <<-EOT
- `client_id` - (Optional) The Client ID of the user-defined Managed Identity to be assigned to the Kubelets. If not specified a Managed Identity is created automatically. Changing this forces a new resource to be created.
- `object_id` - (Optional) The Object ID of the user-defined Managed Identity assigned to the Kubelets.If not specified a Managed Identity is created automatically. Changing this forces a new resource to be created.
- `user_assigned_identity_id` - (Optional) The ID of the User Assigned Identity assigned to the Kubelets. If not specified a Managed Identity is created automatically. Changing this forces a new resource to be created.
EOT
}
variable "kubernetes_version" {
type = string
default = null
description = "Specify which Kubernetes release to use. The default used is the latest Kubernetes version available in the region"
}
variable "load_balancer_profile_enabled" {
type = bool
default = false
description = "(Optional) Enable a load_balancer_profile block. This can only be used when load_balancer_sku is set to `standard`."
nullable = false
}
variable "load_balancer_profile_idle_timeout_in_minutes" {
type = number
default = 30
description = "(Optional) Desired outbound flow idle timeout in minutes for the cluster load balancer. Must be between `4` and `120` inclusive."
}
variable "load_balancer_profile_managed_outbound_ip_count" {
type = number
default = null
description = "(Optional) Count of desired managed outbound IPs for the cluster load balancer. Must be between `1` and `100` inclusive"
}
variable "load_balancer_profile_managed_outbound_ipv6_count" {
type = number
default = null
description = "(Optional) The desired number of IPv6 outbound IPs created and managed by Azure for the cluster load balancer. Must be in the range of `1` to `100` (inclusive). The default value is `0` for single-stack and `1` for dual-stack. Note: managed_outbound_ipv6_count requires dual-stack networking. To enable dual-stack networking the Preview Feature Microsoft.ContainerService/AKS-EnableDualStack needs to be enabled and the Resource Provider re-registered, see the documentation for more information. https://learn.microsoft.com/en-us/azure/aks/configure-kubenet-dual-stack?tabs=azure-cli%2Ckubectl#register-the-aks-enabledualstack-preview-feature"
}
variable "load_balancer_profile_outbound_ip_address_ids" {
type = set(string)
default = null
description = "(Optional) The ID of the Public IP Addresses which should be used for outbound communication for the cluster load balancer."
}
variable "load_balancer_profile_outbound_ip_prefix_ids" {
type = set(string)
default = null
description = "(Optional) The ID of the outbound Public IP Address Prefixes which should be used for the cluster load balancer."
}
variable "load_balancer_profile_outbound_ports_allocated" {
type = number
default = 0
description = "(Optional) Number of desired SNAT port for each VM in the clusters load balancer. Must be between `0` and `64000` inclusive. Defaults to `0`"
}
variable "load_balancer_sku" {
type = string
default = "standard"
description = "(Optional) Specifies the SKU of the Load Balancer used for this Kubernetes Cluster. Possible values are `basic` and `standard`. Defaults to `standard`. Changing this forces a new kubernetes cluster to be created."
validation {
condition = contains(["basic", "standard"], var.load_balancer_sku)
error_message = "Possible values are `basic` and `standard`"
}
}
variable "local_account_disabled" {
type = bool
default = null
description = "(Optional) - If `true` local accounts will be disabled. Defaults to `false`. See [the documentation](https://docs.microsoft.com/azure/aks/managed-aad#disable-local-accounts) for more information."
}
variable "location" {
type = string
default = null
description = "Location of cluster, if not defined it will be read from the resource-group"
}
variable "log_analytics_solution" {
type = object({
id = string
})
default = null
description = "(Optional) Object which contains existing azurerm_log_analytics_solution ID. Providing ID disables creation of azurerm_log_analytics_solution."
validation {
condition = var.log_analytics_solution == null ? true : var.log_analytics_solution.id != null && var.log_analytics_solution.id != ""
error_message = "`var.log_analytics_solution` must be `null` or an object with a valid `id`."
}
}
variable "log_analytics_workspace" {
type = object({
id = string
name = string
location = optional(string)
resource_group_name = optional(string)
})
default = null
description = "(Optional) Existing azurerm_log_analytics_workspace to attach azurerm_log_analytics_solution. Providing the config disables creation of azurerm_log_analytics_workspace."
}
variable "log_analytics_workspace_enabled" {
type = bool
default = true
description = "Enable the integration of azurerm_log_analytics_workspace and azurerm_log_analytics_solution: https://docs.microsoft.com/en-us/azure/azure-monitor/containers/container-insights-onboard"
nullable = false
}
variable "log_analytics_workspace_resource_group_name" {
type = string
default = null
description = "(Optional) Resource group name to create azurerm_log_analytics_solution."
}
variable "log_analytics_workspace_sku" {
type = string
default = "PerGB2018"
description = "The SKU (pricing level) of the Log Analytics workspace. For new subscriptions the SKU should be set to PerGB2018"
}
variable "log_retention_in_days" {
type = number
default = 30
description = "The retention period for the logs in days"
}
variable "maintenance_window" {
type = object({
allowed = optional(list(object({
day = string
hours = set(number)
})), [
]),
not_allowed = optional(list(object({
end = string
start = string
})), []),
})
default = null
description = "(Optional) Maintenance configuration of the managed cluster."
}
variable "maintenance_window_auto_upgrade" {
type = object({
day_of_month = optional(number)
day_of_week = optional(string)
duration = number
frequency = string
interval = number
start_date = optional(string)
start_time = optional(string)
utc_offset = optional(string)
week_index = optional(string)
not_allowed = optional(set(object({
end = string
start = string
})))
})
default = null
description = <<-EOT
- `day_of_month` - (Optional) The day of the month for the maintenance run. Required in combination with RelativeMonthly frequency. Value between 0 and 31 (inclusive).
- `day_of_week` - (Optional) The day of the week for the maintenance run. Options are `Monday`, `Tuesday`, `Wednesday`, `Thurday`, `Friday`, `Saturday` and `Sunday`. Required in combination with weekly frequency.
- `duration` - (Required) The duration of the window for maintenance to run in hours.
- `frequency` - (Required) Frequency of maintenance. Possible options are `Weekly`, `AbsoluteMonthly` and `RelativeMonthly`.
- `interval` - (Required) The interval for maintenance runs. Depending on the frequency this interval is week or month based.
- `start_date` - (Optional) The date on which the maintenance window begins to take effect.
- `start_time` - (Optional) The time for maintenance to begin, based on the timezone determined by `utc_offset`. Format is `HH:mm`.
- `utc_offset` - (Optional) Used to determine the timezone for cluster maintenance.
- `week_index` - (Optional) The week in the month used for the maintenance run. Options are `First`, `Second`, `Third`, `Fourth`, and `Last`.
---
`not_allowed` block supports the following:
- `end` - (Required) The end of a time span, formatted as an RFC3339 string.
- `start` - (Required) The start of a time span, formatted as an RFC3339 string.
EOT
}
variable "maintenance_window_node_os" {
type = object({
day_of_month = optional(number)
day_of_week = optional(string)
duration = number
frequency = string
interval = number
start_date = optional(string)
start_time = optional(string)
utc_offset = optional(string)
week_index = optional(string)
not_allowed = optional(set(object({
end = string
start = string
})))
})
default = null
description = <<-EOT
- `day_of_month` -
- `day_of_week` - (Optional) The day of the week for the maintenance run. Options are `Monday`, `Tuesday`, `Wednesday`, `Thurday`, `Friday`, `Saturday` and `Sunday`. Required in combination with weekly frequency.
- `duration` - (Required) The duration of the window for maintenance to run in hours.
- `frequency` - (Required) Frequency of maintenance. Possible options are `Daily`, `Weekly`, `AbsoluteMonthly` and `RelativeMonthly`.
- `interval` - (Required) The interval for maintenance runs. Depending on the frequency this interval is week or month based.
- `start_date` - (Optional) The date on which the maintenance window begins to take effect.
- `start_time` - (Optional) The time for maintenance to begin, based on the timezone determined by `utc_offset`. Format is `HH:mm`.
- `utc_offset` - (Optional) Used to determine the timezone for cluster maintenance.
- `week_index` - (Optional) The week in the month used for the maintenance run. Options are `First`, `Second`, `Third`, `Fourth`, and `Last`.
---
`not_allowed` block supports the following:
- `end` - (Required) The end of a time span, formatted as an RFC3339 string.
- `start` - (Required) The start of a time span, formatted as an RFC3339 string.
EOT
}
variable "microsoft_defender_enabled" {
type = bool
default = false
description = "(Optional) Is Microsoft Defender on the cluster enabled? Requires `var.log_analytics_workspace_enabled` to be `true` to set this variable to `true`."
nullable = false
}
variable "monitor_metrics" {
type = object({
annotations_allowed = optional(string)
labels_allowed = optional(string)
})
default = null
description = <<-EOT
(Optional) Specifies a Prometheus add-on profile for the Kubernetes Cluster
object({
annotations_allowed = "(Optional) Specifies a comma-separated list of Kubernetes annotation keys that will be used in the resource's labels metric."
labels_allowed = "(Optional) Specifies a Comma-separated list of additional Kubernetes label keys that will be used in the resource's labels metric."
})
EOT
}
variable "msi_auth_for_monitoring_enabled" {
type = bool
default = null
description = "(Optional) Is managed identity authentication for monitoring enabled?"
}
variable "net_profile_dns_service_ip" {
type = string
default = null
description = "(Optional) IP address within the Kubernetes service address range that will be used by cluster service discovery (kube-dns). Changing this forces a new resource to be created."
}
variable "net_profile_outbound_type" {
type = string
default = "loadBalancer"
description = "(Optional) The outbound (egress) routing method which should be used for this Kubernetes Cluster. Possible values are loadBalancer and userDefinedRouting. Defaults to loadBalancer."
}
variable "net_profile_pod_cidr" {
type = string
default = null
description = " (Optional) The CIDR to use for pod IP addresses. This field can only be set when network_plugin is set to kubenet. Changing this forces a new resource to be created."
}
variable "net_profile_service_cidr" {
type = string
default = null
description = "(Optional) The Network Range used by the Kubernetes service. Changing this forces a new resource to be created."
}
variable "network_contributor_role_assigned_subnet_ids" {
type = map(string)
default = {}
description = "Create role assignments for the AKS Service Principal to be a Network Contributor on the subnets used for the AKS Cluster, key should be static string, value should be subnet's id"
nullable = false
}
variable "network_plugin" {
type = string
default = "kubenet"
description = "Network plugin to use for networking."
nullable = false
}
variable "network_plugin_mode" {
type = string
default = null
description = "(Optional) Specifies the network plugin mode used for building the Kubernetes network. Possible value is `Overlay`. Changing this forces a new resource to be created."
}
variable "network_policy" {
type = string
default = null
description = " (Optional) Sets up network policy to be used with Azure CNI. Network policy allows us to control the traffic flow between pods. Currently supported values are calico and azure. Changing this forces a new resource to be created."
}
variable "node_os_channel_upgrade" {
type = string
default = null
description = " (Optional) The upgrade channel for this Kubernetes Cluster Nodes' OS Image. Possible values are `Unmanaged`, `SecurityPatch`, `NodeImage` and `None`."
}
variable "node_pools" {
type = map(object({
name = string
node_count = optional(number)
tags = optional(map(string))
vm_size = string
host_group_id = optional(string)
capacity_reservation_group_id = optional(string)
custom_ca_trust_enabled = optional(bool)
enable_auto_scaling = optional(bool)
enable_host_encryption = optional(bool)
enable_node_public_ip = optional(bool)
eviction_policy = optional(string)
gpu_instance = optional(string)
kubelet_config = optional(object({
cpu_manager_policy = optional(string)
cpu_cfs_quota_enabled = optional(bool)
cpu_cfs_quota_period = optional(string)
image_gc_high_threshold = optional(number)
image_gc_low_threshold = optional(number)
topology_manager_policy = optional(string)
allowed_unsafe_sysctls = optional(set(string))
container_log_max_size_mb = optional(number)
container_log_max_files = optional(number)
pod_max_pid = optional(number)
}))
linux_os_config = optional(object({
sysctl_config = optional(object({
fs_aio_max_nr = optional(number)
fs_file_max = optional(number)
fs_inotify_max_user_watches = optional(number)
fs_nr_open = optional(number)
kernel_threads_max = optional(number)
net_core_netdev_max_backlog = optional(number)
net_core_optmem_max = optional(number)
net_core_rmem_default = optional(number)
net_core_rmem_max = optional(number)
net_core_somaxconn = optional(number)
net_core_wmem_default = optional(number)
net_core_wmem_max = optional(number)
net_ipv4_ip_local_port_range_min = optional(number)
net_ipv4_ip_local_port_range_max = optional(number)
net_ipv4_neigh_default_gc_thresh1 = optional(number)
net_ipv4_neigh_default_gc_thresh2 = optional(number)
net_ipv4_neigh_default_gc_thresh3 = optional(number)
net_ipv4_tcp_fin_timeout = optional(number)
net_ipv4_tcp_keepalive_intvl = optional(number)
net_ipv4_tcp_keepalive_probes = optional(number)
net_ipv4_tcp_keepalive_time = optional(number)
net_ipv4_tcp_max_syn_backlog = optional(number)
net_ipv4_tcp_max_tw_buckets = optional(number)
net_ipv4_tcp_tw_reuse = optional(bool)
net_netfilter_nf_conntrack_buckets = optional(number)
net_netfilter_nf_conntrack_max = optional(number)
vm_max_map_count = optional(number)
vm_swappiness = optional(number)
vm_vfs_cache_pressure = optional(number)
}))
transparent_huge_page_enabled = optional(string)
transparent_huge_page_defrag = optional(string)
swap_file_size_mb = optional(number)
}))
fips_enabled = optional(bool)
kubelet_disk_type = optional(string)
max_count = optional(number)
max_pods = optional(number)
message_of_the_day = optional(string)
mode = optional(string, "User")
min_count = optional(number)
node_network_profile = optional(object({
node_public_ip_tags = optional(map(string))
}))
node_labels = optional(map(string))
node_public_ip_prefix_id = optional(string)
node_taints = optional(list(string))
orchestrator_version = optional(string)
os_disk_size_gb = optional(number)
os_disk_type = optional(string, "Managed")
os_sku = optional(string)
os_type = optional(string, "Linux")
pod_subnet_id = optional(string)
priority = optional(string, "Regular")
proximity_placement_group_id = optional(string)
spot_max_price = optional(number)
scale_down_mode = optional(string, "Delete")
snapshot_id = optional(string)
ultra_ssd_enabled = optional(bool)
vnet_subnet_id = optional(string)
upgrade_settings = optional(object({
max_surge = string
}))
windows_profile = optional(object({
outbound_nat_enabled = optional(bool, true)
}))
workload_runtime = optional(string)
zones = optional(set(string))
create_before_destroy = optional(bool, true)
}))
default = {}
description = <<-EOT
A map of node pools that need to be created and attached on the Kubernetes cluster. The key of the map can be the name of the node pool, and the key must be static string. The value of the map is a `node_pool` block as defined below:
map(object({
name = (Required) The name of the Node Pool which should be created within the Kubernetes Cluster. Changing this forces a new resource to be created. A Windows Node Pool cannot have a `name` longer than 6 characters. A random suffix of 4 characters is always added to the name to avoid clashes during recreates.
node_count = (Optional) The initial number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000` (inclusive) for user pools and between `1` and `1000` (inclusive) for system pools and must be a value in the range `min_count` - `max_count`.
tags = (Optional) A mapping of tags to assign to the resource. At this time there's a bug in the AKS API where Tags for a Node Pool are not stored in the correct case - you [may wish to use Terraform's `ignore_changes` functionality to ignore changes to the casing](https://www.terraform.io/language/meta-arguments/lifecycle#ignore_changess) until this is fixed in the AKS API.
vm_size = (Required) The SKU which should be used for the Virtual Machines used in this Node Pool. Changing this forces a new resource to be created.
host_group_id = (Optional) The fully qualified resource ID of the Dedicated Host Group to provision virtual machines from. Changing this forces a new resource to be created.
capacity_reservation_group_id = (Optional) Specifies the ID of the Capacity Reservation Group where this Node Pool should exist. Changing this forces a new resource to be created.
custom_ca_trust_enabled = (Optional) Specifies whether to trust a Custom CA. This requires that the Preview Feature `Microsoft.ContainerService/CustomCATrustPreview` is enabled and the Resource Provider is re-registered, see [the documentation](https://learn.microsoft.com/en-us/azure/aks/custom-certificate-authority) for more information.
enable_auto_scaling = (Optional) Whether to enable [auto-scaler](https://docs.microsoft.com/azure/aks/cluster-autoscaler).
enable_host_encryption = (Optional) Should the nodes in this Node Pool have host encryption enabled? Changing this forces a new resource to be created.
enable_node_public_ip = (Optional) Should each node have a Public IP Address? Changing this forces a new resource to be created.
eviction_policy = (Optional) The Eviction Policy which should be used for Virtual Machines within the Virtual Machine Scale Set powering this Node Pool. Possible values are `Deallocate` and `Delete`. Changing this forces a new resource to be created. An Eviction Policy can only be configured when `priority` is set to `Spot` and will default to `Delete` unless otherwise specified.
gpu_instance = (Optional) Specifies the GPU MIG instance profile for supported GPU VM SKU. The allowed values are `MIG1g`, `MIG2g`, `MIG3g`, `MIG4g` and `MIG7g`. Changing this forces a new resource to be created.
kubelet_config = optional(object({
cpu_manager_policy = (Optional) Specifies the CPU Manager policy to use. Possible values are `none` and `static`, Changing this forces a new resource to be created.
cpu_cfs_quota_enabled = (Optional) Is CPU CFS quota enforcement for containers enabled? Changing this forces a new resource to be created.
cpu_cfs_quota_period = (Optional) Specifies the CPU CFS quota period value. Changing this forces a new resource to be created.
image_gc_high_threshold = (Optional) Specifies the percent of disk usage above which image garbage collection is always run. Must be between `0` and `100`. Changing this forces a new resource to be created.
image_gc_low_threshold = (Optional) Specifies the percent of disk usage lower than which image garbage collection is never run. Must be between `0` and `100`. Changing this forces a new resource to be created.
topology_manager_policy = (Optional) Specifies the Topology Manager policy to use. Possible values are `none`, `best-effort`, `restricted` or `single-numa-node`. Changing this forces a new resource to be created.
allowed_unsafe_sysctls = (Optional) Specifies the allow list of unsafe sysctls command or patterns (ending in `*`). Changing this forces a new resource to be created.
container_log_max_size_mb = (Optional) Specifies the maximum size (e.g. 10MB) of container log file before it is rotated. Changing this forces a new resource to be created.
container_log_max_files = (Optional) Specifies the maximum number of container log files that can be present for a container. must be at least 2. Changing this forces a new resource to be created.
pod_max_pid = (Optional) Specifies the maximum number of processes per pod. Changing this forces a new resource to be created.
}))
linux_os_config = optional(object({
sysctl_config = optional(object({
fs_aio_max_nr = (Optional) The sysctl setting fs.aio-max-nr. Must be between `65536` and `6553500`. Changing this forces a new resource to be created.
fs_file_max = (Optional) The sysctl setting fs.file-max. Must be between `8192` and `12000500`. Changing this forces a new resource to be created.
fs_inotify_max_user_watches = (Optional) The sysctl setting fs.inotify.max_user_watches. Must be between `781250` and `2097152`. Changing this forces a new resource to be created.
fs_nr_open = (Optional) The sysctl setting fs.nr_open. Must be between `8192` and `20000500`. Changing this forces a new resource to be created.
kernel_threads_max = (Optional) The sysctl setting kernel.threads-max. Must be between `20` and `513785`. Changing this forces a new resource to be created.
net_core_netdev_max_backlog = (Optional) The sysctl setting net.core.netdev_max_backlog. Must be between `1000` and `3240000`. Changing this forces a new resource to be created.
net_core_optmem_max = (Optional) The sysctl setting net.core.optmem_max. Must be between `20480` and `4194304`. Changing this forces a new resource to be created.
net_core_rmem_default = (Optional) The sysctl setting net.core.rmem_default. Must be between `212992` and `134217728`. Changing this forces a new resource to be created.
net_core_rmem_max = (Optional) The sysctl setting net.core.rmem_max. Must be between `212992` and `134217728`. Changing this forces a new resource to be created.
net_core_somaxconn = (Optional) The sysctl setting net.core.somaxconn. Must be between `4096` and `3240000`. Changing this forces a new resource to be created.
net_core_wmem_default = (Optional) The sysctl setting net.core.wmem_default. Must be between `212992` and `134217728`. Changing this forces a new resource to be created.
net_core_wmem_max = (Optional) The sysctl setting net.core.wmem_max. Must be between `212992` and `134217728`. Changing this forces a new resource to be created.
net_ipv4_ip_local_port_range_min = (Optional) The sysctl setting net.ipv4.ip_local_port_range min value. Must be between `1024` and `60999`. Changing this forces a new resource to be created.
net_ipv4_ip_local_port_range_max = (Optional) The sysctl setting net.ipv4.ip_local_port_range max value. Must be between `1024` and `60999`. Changing this forces a new resource to be created.
net_ipv4_neigh_default_gc_thresh1 = (Optional) The sysctl setting net.ipv4.neigh.default.gc_thresh1. Must be between `128` and `80000`. Changing this forces a new resource to be created.
net_ipv4_neigh_default_gc_thresh2 = (Optional) The sysctl setting net.ipv4.neigh.default.gc_thresh2. Must be between `512` and `90000`. Changing this forces a new resource to be created.
net_ipv4_neigh_default_gc_thresh3 = (Optional) The sysctl setting net.ipv4.neigh.default.gc_thresh3. Must be between `1024` and `100000`. Changing this forces a new resource to be created.
net_ipv4_tcp_fin_timeout = (Optional) The sysctl setting net.ipv4.tcp_fin_timeout. Must be between `5` and `120`. Changing this forces a new resource to be created.
net_ipv4_tcp_keepalive_intvl = (Optional) The sysctl setting net.ipv4.tcp_keepalive_intvl. Must be between `10` and `75`. Changing this forces a new resource to be created.
net_ipv4_tcp_keepalive_probes = (Optional) The sysctl setting net.ipv4.tcp_keepalive_probes. Must be between `1` and `15`. Changing this forces a new resource to be created.
net_ipv4_tcp_keepalive_time = (Optional) The sysctl setting net.ipv4.tcp_keepalive_time. Must be between `30` and `432000`. Changing this forces a new resource to be created.
net_ipv4_tcp_max_syn_backlog = (Optional) The sysctl setting net.ipv4.tcp_max_syn_backlog. Must be between `128` and `3240000`. Changing this forces a new resource to be created.
net_ipv4_tcp_max_tw_buckets = (Optional) The sysctl setting net.ipv4.tcp_max_tw_buckets. Must be between `8000` and `1440000`. Changing this forces a new resource to be created.
net_ipv4_tcp_tw_reuse = (Optional) Is sysctl setting net.ipv4.tcp_tw_reuse enabled? Changing this forces a new resource to be created.
net_netfilter_nf_conntrack_buckets = (Optional) The sysctl setting net.netfilter.nf_conntrack_buckets. Must be between `65536` and `147456`. Changing this forces a new resource to be created.
net_netfilter_nf_conntrack_max = (Optional) The sysctl setting net.netfilter.nf_conntrack_max. Must be between `131072` and `1048576`. Changing this forces a new resource to be created.
vm_max_map_count = (Optional) The sysctl setting vm.max_map_count. Must be between `65530` and `262144`. Changing this forces a new resource to be created.
vm_swappiness = (Optional) The sysctl setting vm.swappiness. Must be between `0` and `100`. Changing this forces a new resource to be created.
vm_vfs_cache_pressure = (Optional) The sysctl setting vm.vfs_cache_pressure. Must be between `0` and `100`. Changing this forces a new resource to be created.
}))
transparent_huge_page_enabled = (Optional) Specifies the Transparent Huge Page enabled configuration. Possible values are `always`, `madvise` and `never`. Changing this forces a new resource to be created.
transparent_huge_page_defrag = (Optional) specifies the defrag configuration for Transparent Huge Page. Possible values are `always`, `defer`, `defer+madvise`, `madvise` and `never`. Changing this forces a new resource to be created.
swap_file_size_mb = (Optional) Specifies the size of swap file on each node in MB. Changing this forces a new resource to be created.
}))
fips_enabled = (Optional) Should the nodes in this Node Pool have Federal Information Processing Standard enabled? Changing this forces a new resource to be created. FIPS support is in Public Preview - more information and details on how to opt into the Preview can be found in [this article](https://docs.microsoft.com/azure/aks/use-multiple-node-pools#add-a-fips-enabled-node-pool-preview).
kubelet_disk_type = (Optional) The type of disk used by kubelet. Possible values are `OS` and `Temporary`.
max_count = (Optional) The maximum number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000` and must be greater than or equal to `min_count`.
max_pods = (Optional) The minimum number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000` and must be less than or equal to `max_count`.
message_of_the_day = (Optional) A base64-encoded string which will be written to /etc/motd after decoding. This allows customization of the message of the day for Linux nodes. It cannot be specified for Windows nodes and must be a static string (i.e. will be printed raw and not executed as a script). Changing this forces a new resource to be created.
mode = (Optional) Should this Node Pool be used for System or User resources? Possible values are `System` and `User`. Defaults to `User`.
min_count = (Optional) The minimum number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000` and must be less than or equal to `max_count`.
node_network_profile = optional(object({
node_public_ip_tags = (Optional) Specifies a mapping of tags to the instance-level public IPs. Changing this forces a new resource to be created.
}))
node_labels = (Optional) A map of Kubernetes labels which should be applied to nodes in this Node Pool.
node_public_ip_prefix_id = (Optional) Resource ID for the Public IP Addresses Prefix for the nodes in this Node Pool. `enable_node_public_ip` should be `true`. Changing this forces a new resource to be created.
node_taints = (Optional) A list of Kubernetes taints which should be applied to nodes in the agent pool (e.g `key=value:NoSchedule`). Changing this forces a new resource to be created.
orchestrator_version = (Optional) Version of Kubernetes used for the Agents. If not specified, the latest recommended version will be used at provisioning time (but won't auto-upgrade). AKS does not require an exact patch version to be specified, minor version aliases such as `1.22` are also supported. - The minor version's latest GA patch is automatically chosen in that case. More details can be found in [the documentation](https://docs.microsoft.com/en-us/azure/aks/supported-kubernetes-versions?tabs=azure-cli#alias-minor-version). This version must be supported by the Kubernetes Cluster - as such the version of Kubernetes used on the Cluster/Control Plane may need to be upgraded first.
os_disk_size_gb = (Optional) The Agent Operating System disk size in GB. Changing this forces a new resource to be created.
os_disk_type = (Optional) The type of disk which should be used for the Operating System. Possible values are `Ephemeral` and `Managed`. Defaults to `Managed`. Changing this forces a new resource to be created.
os_sku = (Optional) Specifies the OS SKU used by the agent pool. Possible values include: `Ubuntu`, `CBLMariner`, `Mariner`, `Windows2019`, `Windows2022`. If not specified, the default is `Ubuntu` if OSType=Linux or `Windows2019` if OSType=Windows. And the default Windows OSSKU will be changed to `Windows2022` after Windows2019 is deprecated. Changing this forces a new resource to be created.
os_type = (Optional) The Operating System which should be used for this Node Pool. Changing this forces a new resource to be created. Possible values are `Linux` and `Windows`. Defaults to `Linux`.
pod_subnet_id = (Optional) The ID of the Subnet where the pods in the Node Pool should exist. Changing this forces a new resource to be created.
priority = (Optional) The Priority for Virtual Machines within the Virtual Machine Scale Set that powers this Node Pool. Possible values are `Regular` and `Spot`. Defaults to `Regular`. Changing this forces a new resource to be created.
proximity_placement_group_id = (Optional) The ID of the Proximity Placement Group where the Virtual Machine Scale Set that powers this Node Pool will be placed. Changing this forces a new resource to be created. When setting `priority` to Spot - you must configure an `eviction_policy`, `spot_max_price` and add the applicable `node_labels` and `node_taints` [as per the Azure Documentation](https://docs.microsoft.com/azure/aks/spot-node-pool).
spot_max_price = (Optional) The maximum price you're willing to pay in USD per Virtual Machine. Valid values are `-1` (the current on-demand price for a Virtual Machine) or a positive value with up to five decimal places. Changing this forces a new resource to be created. This field can only be configured when `priority` is set to `Spot`.
scale_down_mode = (Optional) Specifies how the node pool should deal with scaled-down nodes. Allowed values are `Delete` and `Deallocate`. Defaults to `Delete`.
snapshot_id = (Optional) The ID of the Snapshot which should be used to create this Node Pool. Changing this forces a new resource to be created.
ultra_ssd_enabled = (Optional) Used to specify whether the UltraSSD is enabled in the Node Pool. Defaults to `false`. See [the documentation](https://docs.microsoft.com/azure/aks/use-ultra-disks) for more information. Changing this forces a new resource to be created.
vnet_subnet_id = (Optional) The ID of the Subnet where this Node Pool should exist. Changing this forces a new resource to be created. A route table must be configured on this Subnet.
upgrade_settings = optional(object({
max_surge = string
}))
windows_profile = optional(object({
outbound_nat_enabled = optional(bool, true)
}))
workload_runtime = (Optional) Used to specify the workload runtime. Allowed values are `OCIContainer` and `WasmWasi`. WebAssembly System Interface node pools are in Public Preview - more information and details on how to opt into the preview can be found in [this article](https://docs.microsoft.com/azure/aks/use-wasi-node-pools)
zones = (Optional) Specifies a list of Availability Zones in which this Kubernetes Cluster Node Pool should be located. Changing this forces a new Kubernetes Cluster Node Pool to be created.
create_before_destroy = (Optional) Create a new node pool before destroy the old one when Terraform must update an argument that cannot be updated in-place. Set this argument to `true` will add add a random suffix to pool's name to avoid conflict. Default to `true`.
}))
EOT
nullable = false
}
variable "node_resource_group" {
type = string
default = null
description = "The auto-generated Resource Group which contains the resources for this Managed Kubernetes Cluster. Changing this forces a new resource to be created."
}
variable "oidc_issuer_enabled" {
type = bool
default = false
description = "Enable or Disable the OIDC issuer URL. Defaults to false."
}
variable "only_critical_addons_enabled" {
type = bool
default = null
description = "(Optional) Enabling this option will taint default node pool with `CriticalAddonsOnly=true:NoSchedule` taint. Changing this forces a new resource to be created."
}
variable "open_service_mesh_enabled" {
type = bool
default = null
description = "Is Open Service Mesh enabled? For more details, please visit [Open Service Mesh for AKS](https://docs.microsoft.com/azure/aks/open-service-mesh-about)."
}
variable "orchestrator_version" {
type = string
default = null
description = "Specify which Kubernetes release to use for the orchestration layer. The default used is the latest Kubernetes version available in the region"
}
variable "os_disk_size_gb" {
type = number
default = 50
description = "Disk size of nodes in GBs."
}
variable "os_disk_type" {
type = string
default = "Managed"
description = "The type of disk which should be used for the Operating System. Possible values are `Ephemeral` and `Managed`. Defaults to `Managed`. Changing this forces a new resource to be created."
nullable = false
}
variable "os_sku" {
type = string
default = null
description = "(Optional) Specifies the OS SKU used by the agent pool. Possible values include: `Ubuntu`, `CBLMariner`, `Mariner`, `Windows2019`, `Windows2022`. If not specified, the default is `Ubuntu` if OSType=Linux or `Windows2019` if OSType=Windows. And the default Windows OSSKU will be changed to `Windows2022` after Windows2019 is deprecated. Changing this forces a new resource to be created."
}
variable "pod_subnet_id" {
type = string
default = null
description = "(Optional) The ID of the Subnet where the pods in the default Node Pool should exist. Changing this forces a new resource to be created."
}
variable "prefix" {
type = string
default = ""
description = "(Optional) The prefix for the resources created in the specified Azure Resource Group. Omitting this variable requires both `var.cluster_log_analytics_workspace_name` and `var.cluster_name` have been set."
nullable = false
}
variable "private_cluster_enabled" {
type = bool
default = false
description = "If true cluster API server will be exposed only on internal IP address and available only in cluster vnet."
}
variable "private_cluster_public_fqdn_enabled" {
type = bool
default = false
description = "(Optional) Specifies whether a Public FQDN for this Private Cluster should be added. Defaults to `false`."
}
variable "private_dns_zone_id" {
type = string
default = null
description = "(Optional) Either the ID of Private DNS Zone which should be delegated to this Cluster, `System` to have AKS manage this or `None`. In case of `None` you will need to bring your own DNS server and set up resolving, otherwise cluster will have issues after provisioning. Changing this forces a new resource to be created."
}
variable "public_ssh_key" {
type = string
default = ""
description = "A custom ssh key to control access to the AKS cluster. Changing this forces a new resource to be created."
}
variable "rbac_aad" {
type = bool
default = true
description = "(Optional) Is Azure Active Directory integration enabled?"
nullable = false
}
variable "rbac_aad_admin_group_object_ids" {
type = list(string)
default = null
description = "Object ID of groups with admin access."
}
variable "rbac_aad_azure_rbac_enabled" {
type = bool
default = null
description = "(Optional) Is Role Based Access Control based on Azure AD enabled?"
}
variable "rbac_aad_client_app_id" {
type = string
default = null
description = "The Client ID of an Azure Active Directory Application."
}
variable "rbac_aad_managed" {
type = bool
default = false
description = "Is the Azure Active Directory integration Managed, meaning that Azure will create/manage the Service Principal used for integration."
nullable = false
}
variable "rbac_aad_server_app_id" {
type = string
default = null
description = "The Server ID of an Azure Active Directory Application."
}
variable "rbac_aad_server_app_secret" {
type = string
default = null
description = "The Server Secret of an Azure Active Directory Application."
}
variable "rbac_aad_tenant_id" {
type = string
default = null
description = "(Optional) The Tenant ID used for Azure Active Directory Application. If this isn't specified the Tenant ID of the current Subscription is used."
}
variable "role_based_access_control_enabled" {
type = bool
default = false
description = "Enable Role Based Access Control."
nullable = false
}
variable "run_command_enabled" {
type = bool
default = true
description = "(Optional) Whether to enable run command for the cluster or not."
}
variable "scale_down_mode" {
type = string
default = "Delete"
description = "(Optional) Specifies the autoscaling behaviour of the Kubernetes Cluster. If not specified, it defaults to `Delete`. Possible values include `Delete` and `Deallocate`. Changing this forces a new resource to be created."
}
variable "secret_rotation_enabled" {
type = bool
default = false
description = "Is secret rotation enabled? This variable is only used when `key_vault_secrets_provider_enabled` is `true` and defaults to `false`"
nullable = false
}
variable "secret_rotation_interval" {
type = string
default = "2m"
description = "The interval to poll for secret rotation. This attribute is only set when `secret_rotation` is `true` and defaults to `2m`"
nullable = false
}
variable "service_mesh_profile" {
type = object({
mode = string
internal_ingress_gateway_enabled = optional(bool, true)
external_ingress_gateway_enabled = optional(bool, true)
})
default = null
description = <<-EOT
`mode` - (Required) The mode of the service mesh. Possible value is `Istio`.
`internal_ingress_gateway_enabled` - (Optional) Is Istio Internal Ingress Gateway enabled? Defaults to `true`.
`external_ingress_gateway_enabled` - (Optional) Is Istio External Ingress Gateway enabled? Defaults to `true`.
EOT
}
variable "sku_tier" {
type = string
default = "Free"
description = "The SKU Tier that should be used for this Kubernetes Cluster. Possible values are `Free`, `Standard` and `Premium`"
validation {
condition = contains(["Free", "Standard", "Premium"], var.sku_tier)
error_message = "The SKU Tier must be either `Free`, `Standard` or `Premium`. `Paid` is no longer supported since AzureRM provider v3.51.0."
}
}
variable "snapshot_id" {
type = string
default = null
description = "(Optional) The ID of the Snapshot which should be used to create this default Node Pool. `temporary_name_for_rotation` must be specified when changing this property."
}
variable "storage_profile_blob_driver_enabled" {
type = bool
default = false
description = "(Optional) Is the Blob CSI driver enabled? Defaults to `false`"
}
variable "storage_profile_disk_driver_enabled" {
type = bool
default = true
description = "(Optional) Is the Disk CSI driver enabled? Defaults to `true`"
}
variable "storage_profile_disk_driver_version" {
type = string
default = "v1"
description = "(Optional) Disk CSI Driver version to be used. Possible values are `v1` and `v2`. Defaults to `v1`."
}
variable "storage_profile_enabled" {
type = bool
default = false
description = "Enable storage profile"
nullable = false
}
variable "storage_profile_file_driver_enabled" {
type = bool
default = true
description = "(Optional) Is the File CSI driver enabled? Defaults to `true`"
}
variable "storage_profile_snapshot_controller_enabled" {
type = bool
default = true
description = "(Optional) Is the Snapshot Controller enabled? Defaults to `true`"
}
variable "support_plan" {
type = string
default = "KubernetesOfficial"
description = "The support plan which should be used for this Kubernetes Cluster. Possible values are `KubernetesOfficial` and `AKSLongTermSupport`."
validation {
condition = contains(["KubernetesOfficial", "AKSLongTermSupport"], var.support_plan)
error_message = "The support plan must be either `KubernetesOfficial` or `AKSLongTermSupport`."
}
}
variable "tags" {
type = map(string)
default = {}
description = "Any tags that should be present on the AKS cluster resources"
}
variable "temporary_name_for_rotation" {
type = string
default = null
description = "(Optional) Specifies the name of the temporary node pool used to cycle the default node pool for VM resizing. the `var.agents_size` is no longer ForceNew and can be resized by specifying `temporary_name_for_rotation`"
}
# tflint-ignore: terraform_unused_declarations
variable "tracing_tags_enabled" {
type = bool
default = false
description = "Whether enable tracing tags that generated by BridgeCrew Yor."
nullable = false
}
# tflint-ignore: terraform_unused_declarations
variable "tracing_tags_prefix" {
type = string
default = "avm_"
description = "Default prefix for generated tracing tags"
nullable = false
}
variable "ultra_ssd_enabled" {
type = bool
default = false
description = "(Optional) Used to specify whether the UltraSSD is enabled in the Default Node Pool. Defaults to false."
}
variable "vnet_subnet_id" {
type = string
default = null
description = "(Optional) The ID of a Subnet where the Kubernetes Node Pool should exist. Changing this forces a new resource to be created."
}
variable "web_app_routing" {
type = object({
dns_zone_id = string
})
default = null
description = <<-EOT
object({
dns_zone_id = "(Required) Specifies the ID of the DNS Zone in which DNS entries are created for applications deployed to the cluster when Web App Routing is enabled."
})
EOT
}
variable "workload_autoscaler_profile" {
type = object({
keda_enabled = optional(bool, false)
vertical_pod_autoscaler_enabled = optional(bool, false)
})
default = null
description = <<-EOT
`keda_enabled` - (Optional) Specifies whether KEDA Autoscaler can be used for workloads.
`vertical_pod_autoscaler_enabled` - (Optional) Specifies whether Vertical Pod Autoscaler should be enabled.
EOT
}
variable "workload_identity_enabled" {
type = bool
default = false
description = "Enable or Disable Workload Identity. Defaults to false."
}
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