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Azure AKS with Karpenter and Virtual Nodes

Azure sandbox that provisions the following:

  • VPN
  • AKS Cluster with ACI Connector for virtual nodes
  • ACI-enabled subnet for Karpenter autoscaling

Usage

To use this in your BYOC app, please use the azure-aks runner type:

version = "v1"

[runner]
runner_type = "azure-aks"

[sandbox]
terraform_version = "1.11.3"

[sandbox.public_repo]
directory = "."
repo      = "nuonco/azure-aks-sandbox"
branch    = "main"

Testing

This sandbox can be tested outside of nuon by following these steps:

  1. Ensure you have an Azure account setup and az installed
  2. Create Service Principal Credentials
  3. Create a terraform.tfvars with the correct variable inputs

Requirements

Name Version
azapi ~> 2.4.0
azurerm ~> 4.34.0

Providers

Name Version
azapi 2.4.0
azurerm 4.34.0
random 3.7.2

Modules

Name Source Version
aks Azure/aks/azurerm//v4 ~> 10.1.0

Resources

Name Type
azurerm_container_registry.acr resource
azurerm_dns_zone.public resource
azurerm_private_dns_zone.internal resource
azurerm_subnet.aci resource
random_pet.ssh_key_name resource
azurerm_client_config.current data source
azurerm_resource_group.rg data source
azurerm_subnet.existing data source
azurerm_virtual_network.existing data source

Inputs

Name Description Type Default Required
cluster_version The Kubernetes version to use for the AKS cluster. string "1.33" no
internal_root_domain The internal root domain. string n/a yes
location The location to launch the cluster in string n/a yes
nuon_id The nuon id for this install. Used for naming purposes. string n/a yes
private_subnet_names The subnets to deploy private resources into. string n/a yes
public_root_domain The public root domain. string n/a yes
public_subnet_names The subnets to deploy public resources into. string n/a yes
resource_group_name The resource group name where the existing Virtual Network is located. string n/a yes
vnet_name The name of the existing Virtual Network created by Bicep. string n/a yes

Outputs

Name Description
account A map of Azure account attributes: location, subscription_id, client_id, resource_group_name.
acr A map of ACR attributes: id, login_server.
cluster A map of AKS cluster attributes: id, name, client_certificate, client_key, cluster_ca_certificate, cluster_fqdn, oidc_issuer_url, location, kube_config_raw, kube_admin_config_raw.
internal_domain A map of internal domain attributes: nameservers, name, id.
public_domain A map of public domain attributes: nameservers, name, id.
vnet A map of vnet attributes: name, subnet_ids.