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main.tf
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main.tf
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terraform {
# ---------------------------------------------------
# Setup providers
# ---------------------------------------------------
required_providers {
azurerm = {
source = "registry.terraform.io/hashicorp/azurerm"
}
kubernetes = {
source = "registry.terraform.io/hashicorp/kubernetes"
}
kubectl = {
source = "gavinbunney/kubectl"
}
helm = {
source = "registry.terraform.io/hashicorp/helm"
}
random = {
source = "registry.terraform.io/hashicorp/random"
}
}
}
provider "azurerm" {
features {}
environment = "public"
}
provider "kubernetes" {
host = azurerm_kubernetes_cluster.default.kube_admin_config.0.host
username = azurerm_kubernetes_cluster.default.kube_admin_config.0.username
password = azurerm_kubernetes_cluster.default.kube_admin_config.0.password
client_certificate = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.client_certificate)
client_key = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.client_key)
cluster_ca_certificate = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.cluster_ca_certificate)
}
provider "kubectl" {
host = azurerm_kubernetes_cluster.default.kube_admin_config.0.host
username = azurerm_kubernetes_cluster.default.kube_admin_config.0.username
password = azurerm_kubernetes_cluster.default.kube_admin_config.0.password
client_certificate = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.client_certificate)
client_key = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.client_key)
cluster_ca_certificate = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.cluster_ca_certificate)
}
provider "helm" {
kubernetes {
host = azurerm_kubernetes_cluster.default.kube_admin_config.0.host
username = azurerm_kubernetes_cluster.default.kube_admin_config.0.username
password = azurerm_kubernetes_cluster.default.kube_admin_config.0.password
client_certificate = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.client_certificate)
client_key = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.client_key)
cluster_ca_certificate = base64decode(azurerm_kubernetes_cluster.default.kube_admin_config.0.cluster_ca_certificate)
}
registry {
# Manually perform a `helm repo update` on the runner before running Terraform
url = "oci://artifacts.private.registry"
username = "api"
# Pass in secret on environment variable named TF_VAR_artifactAPIToken
password = var.artifactAPIToken
}
}
provider "grafana" {
url = azurerm_dashboard_grafana.default.endpoint
auth = "securely pass api token"
}
## ---------------------------------------------------
# Initial resource group
## ---------------------------------------------------
# Utilize the current Azure CLI context as a data source for future reference
data "azurerm_client_config" "current" {}
resource "azurerm_resource_group" "default" {
name = "rg-test"
location = "eastus2"
}
## ---------------------------------------------------
# user name and password setup for AKS node pools
## ---------------------------------------------------
resource "random_string" "userName" {
length = 8
special = false
upper = false
}
resource "random_password" "userPasswd" {
length = 32
special = true
override_special = "!#$%&*()-_=+[]{}<>:?"
}
## ---------------------------------------------------
# Azure KeyVault and components
## ---------------------------------------------------
resource "azurerm_key_vault" "default" {
name = "kv-aks1234" # Must resolve to 24 characters or less
resource_group_name = azurerm_resource_group.default.name
location = azurerm_resource_group.default.location
tenant_id = data.azurerm_client_config.current.tenant_id
soft_delete_retention_days = 7
enabled_for_deployment = true
enabled_for_template_deployment = true
sku_name = "standard"
}
# Store the generated username/password in the KeyVault
resource "azurerm_key_vault_secret" "node_admin_name" {
name = "aksadminname"
value = random_string.userName.result
key_vault_id = azurerm_key_vault.default.id
}
resource "azurerm_key_vault_secret" "node_admin_passwd" {
name = "aksadminpasswd"
value = random_password.userPasswd.result
key_vault_id = azurerm_key_vault.default.id
}
resource "azurerm_kubernetes_cluster" "default" {
name = "aks-eastus2-test"
resource_group_name = azurerm_resource_group.default.name
location = azurerm_resource_group.default.location
dns_prefix = azurerm_resource_group.default.name
node_resource_group = "rg-aks-eastus2-test_node"
public_network_access_enabled = true
azure_active_directory_role_based_access_control {
managed = true
azure_rbac_enabled = true
# Grant Cluster Admin to AzureAD object ids supplied at runtime
admin_group_object_ids = var.adminGroupObjectIds
}
key_vault_secrets_provider {
secret_rotation_enabled = true
secret_rotation_interval = "2m"
}
network_profile {
network_plugin = "azure"
network_mode = "transparent"
network_policy = "calico"
}
default_node_pool {
name = "system"
node_count = 1
vm_size = "Standard_B2ms"
os_sku = "Mariner"
}
windows_profile {
admin_username = random_string.userName.result
admin_password = random_password.userPasswd.result
}
identity {
type = "SystemAssigned"
}
monitor_metrics {
annotations_allowed = null
labels_allowed = null
}
}
resource "azurerm_kubernetes_cluster_node_pool" "default" {
name = "win22"
kubernetes_cluster_id = azurerm_kubernetes_cluster.default.id
mode = "User" # Node Pool Type
enable_node_public_ip = false
enable_auto_scaling = true
node_count = 1
min_count = 1
max_count = 5
max_pods = 10
vm_size = "Standard_B2ms"
os_type = "Windows"
os_sku = "Windows2022"
}
resource "azurerm_role_assignment" "clusteradmin-rbacclusteradmin" {
scope = azurerm_kubernetes_cluster.default.id
role_definition_name = "Azure Kubernetes Service RBAC Cluster Admin"
principal_id = var.adminGroupObjectIds[0]
}
## ---------------------------------------------------
# Keyvault access policy for secrets providers
## ---------------------------------------------------
resource "azurerm_key_vault_access_policy" "akvp" {
key_vault_id = azurerm_key_vault.default.id
tenant_id = data.azurerm_client_config.current.tenant_id
object_id = azurerm_kubernetes_cluster.default.key_vault_secrets_provider.0.secret_identity.0.object_id
secret_permissions = [
"Get"
]
}
resource "azurerm_key_vault_access_policy" "akv2k8s" {
key_vault_id = azurerm_key_vault.default.id
tenant_id = data.azurerm_client_config.current.tenant_id
object_id = azurerm_kubernetes_cluster.default.kubelet_identity[0].object_id
secret_permissions = [
"Get"
]
}