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This commit is contained in:
Joey Lorich
2019-10-15 13:03:36 -06:00
committed by Joey Lorich
parent fa82feccc7
commit 415e3caa97
89 changed files with 7503 additions and 1140 deletions
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24
quickstart/201-aks-rbac-dashboard-admin/aks.tf Normal file
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resource "azurerm_kubernetes_cluster" "default" {
name = "${var.name}-aks"
location = "${azurerm_resource_group.default.location}"
resource_group_name = "${azurerm_resource_group.default.name}"
dns_prefix = "${var.dns_prefix}-${var.name}-aks-${var.environment}"
depends_on = ["azurerm_role_assignment.default"]
agent_pool_profile {
name = "default"
count = "${var.node_count}"
vm_size = "${var.node_type}"
os_type = "Linux"
os_disk_size_gb = 30
}
service_principal {
client_id = "${azuread_application.default.application_id}"
client_secret = "${azuread_service_principal_password.default.value}"
}
role_based_access_control {
enabled = true
}
}

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resource "azuread_application" "default" {
name = "${var.name}-${var.environment}"
}
resource "azuread_service_principal" "default" {
application_id = "${azuread_application.default.application_id}"
}
resource "random_string" "password" {
length = 32
special = true
}
resource "azuread_service_principal_password" "default" {
service_principal_id = "${azuread_service_principal.default.id}"
value = "${random_string.password.result}"
end_date = "2099-01-01T01:00:00Z"
}
resource "azurerm_role_assignment" "default" {
scope = "${data.azurerm_subscription.current.id}/resourceGroups/${azurerm_resource_group.default.name}"
role_definition_name = "Network Contributor"
principal_id = "${azuread_service_principal.default.id}"
}

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# Define Kubernetes provider to use the AKS cluster
provider "kubernetes" {
host = "${azurerm_kubernetes_cluster.default.kube_config.0.host}"
client_certificate = "${base64decode(azurerm_kubernetes_cluster.default.kube_config.0.client_certificate)}"
client_key = "${base64decode(azurerm_kubernetes_cluster.default.kube_config.0.client_key)}"
cluster_ca_certificate = "${base64decode(azurerm_kubernetes_cluster.default.kube_config.0.cluster_ca_certificate)}"
}
# Grant cluster-admin rights to the kubernetes-dashboard account.
# THIS IS NOT RECOMMENDED IN PRODUTION
resource "kubernetes_cluster_role_binding" "dashboard" {
metadata {
name = "kubernetes-dashboard"
}
role_ref {
api_group = "rbac.authorization.k8s.io"
kind = "ClusterRole"
name = "cluster-admin"
}
subject {
kind = "ServiceAccount"
name = "kubernetes-dashboard"
namespace = "kube-system"
}
}

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# The Azure Active Resource Manager Terraform provider
provider "azurerm" {
version = "=1.36.1"
}
# The Azure Active Directory Terraform provider
provider "azuread" {
version = "=0.6.0"
}
# Reference to the current subscription. Used when creating role assignments
data "azurerm_subscription" "current" {}
# The main resource group for this deployment
resource "azurerm_resource_group" "default" {
name = "${var.name}-${var.environment}-rg"
location = "${var.location}"
}

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# Azure Kubernetes Service
This template deploys an [Azure Kubernetes Service](https://www.terraform.io/docs/providers/azurerm/r/kubernetes_cluster.html) instance with Role Based Access Control (RBAC) enabled. With this, by default the robust Kubernetes dashboard has no rights to view or make changes to the cluster. In this template we leverage the Kubernetes provider to provision a role binding for the Dashboard accoutn to give it `cluster-admin` rights - something we shoudl not do in production but can be very useful in development.
## Resources
| Terraform Resource Type | Description |
| - | - |
| `azurerm_resource_group` | The resource group all resources are deployed into |
| `azurerm_kubernetes_cluster` |The Azure Kubernetes Serice cluster |
| `azuread_application` |The application Identity the AKS cluster will use |
| `random_string` | A random string which will be saved and used with the service principal |
| `azuread_service_principal` |The service principal the AKS cluster will use |
| `azuread_service_principal_password` | The password for the Service principal |
## Variables
| Name | Description |
|-|-|
| name | Name of the deployment |
| environment | The depolyment environment name (used for postfixing resource names) |
| prefix | A prefix for globally-unique dns-based resources |
| location | The Azure Region to deploy these resources in |
| node_type | The type of node to deploy on (e.g. d1v2) |
| node_count | The number of nodes to deploy |
| dns_prefix | A unique dns prefix |
## Example
```bash
> terraform plan
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.
data.azurerm_subscription.current: Refreshing state...
------------------------------------------------------------------------
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
+ create
Terraform will perform the following actions:
# azuread_application.default will be created
+ resource "azuread_application" "default" {
+ application_id = (known after apply)
+ homepage = (known after apply)
+ id = (known after apply)
+ identifier_uris = (known after apply)
+ name = "quickstart-aks-dev"
+ object_id = (known after apply)
+ public_client = (known after apply)
+ reply_urls = (known after apply)
+ type = "webapp/api"
+ oauth2_permissions {
+ admin_consent_description = (known after apply)
+ admin_consent_display_name = (known after apply)
+ id = (known after apply)
+ is_enabled = (known after apply)
+ type = (known after apply)
+ user_consent_description = (known after apply)
+ user_consent_display_name = (known after apply)
+ value = (known after apply)
}
}
# azuread_service_principal.default will be created
+ resource "azuread_service_principal" "default" {
+ application_id = (known after apply)
+ display_name = (known after apply)
+ id = (known after apply)
+ object_id = (known after apply)
+ oauth2_permissions {
+ admin_consent_description = (known after apply)
+ admin_consent_display_name = (known after apply)
+ id = (known after apply)
+ is_enabled = (known after apply)
+ type = (known after apply)
+ user_consent_description = (known after apply)
+ user_consent_display_name = (known after apply)
+ value = (known after apply)
}
}
# azuread_service_principal_password.default will be created
+ resource "azuread_service_principal_password" "default" {
+ end_date = "2099-01-01T01:00:00Z"
+ id = (known after apply)
+ key_id = (known after apply)
+ service_principal_id = (known after apply)
+ start_date = (known after apply)
+ value = (sensitive value)
}
# azurerm_kubernetes_cluster.default will be created
+ resource "azurerm_kubernetes_cluster" "default" {
+ dns_prefix = "tfquickstart-quickstart-aks-aks-dev"
+ enable_pod_security_policy = (known after apply)
+ fqdn = (known after apply)
+ id = (known after apply)
+ kube_admin_config = (known after apply)
+ kube_admin_config_raw = (sensitive value)
+ kube_config = (known after apply)
+ kube_config_raw = (sensitive value)
+ kubernetes_version = (known after apply)
+ location = "westus2"
+ name = "quickstart-aks-aks"
+ node_resource_group = (known after apply)
+ resource_group_name = "quickstart-aks-dev-rg"
+ tags = (known after apply)
+ addon_profile {
+ oms_agent {
+ enabled = true
+ log_analytics_workspace_id = (known after apply)
}
}
+ agent_pool_profile {
+ count = 3
+ dns_prefix = (known after apply)
+ fqdn = (known after apply)
+ max_pods = (known after apply)
+ name = "default"
+ os_disk_size_gb = 30
+ os_type = "Linux"
+ type = "AvailabilitySet"
+ vm_size = "Standard_D1_v2"
}
+ network_profile {
+ dns_service_ip = (known after apply)
+ docker_bridge_cidr = (known after apply)
+ load_balancer_sku = (known after apply)
+ network_plugin = (known after apply)
+ network_policy = (known after apply)
+ pod_cidr = (known after apply)
+ service_cidr = (known after apply)
}
+ role_based_access_control {
+ enabled = true
}
+ service_principal {
+ client_id = (known after apply)
+ client_secret = (sensitive value)
}
}
# azurerm_log_analytics_solution.default will be created
+ resource "azurerm_log_analytics_solution" "default" {
+ id = (known after apply)
+ location = "westus2"
+ resource_group_name = "quickstart-aks-dev-rg"
+ solution_name = "ContainerInsights"
+ workspace_name = "quickstart-aks-dev-law"
+ workspace_resource_id = (known after apply)
+ plan {
+ name = (known after apply)
+ product = "OMSGallery/ContainerInsights"
+ publisher = "Microsoft"
}
}
# azurerm_log_analytics_workspace.default will be created
+ resource "azurerm_log_analytics_workspace" "default" {
+ id = (known after apply)
+ location = "westus2"
+ name = "quickstart-aks-dev-law"
+ portal_url = (known after apply)
+ primary_shared_key = (sensitive value)
+ resource_group_name = "quickstart-aks-dev-rg"
+ retention_in_days = 30
+ secondary_shared_key = (sensitive value)
+ sku = "PerGB2018"
+ tags = (known after apply)
+ workspace_id = (known after apply)
}
# azurerm_resource_group.default will be created
+ resource "azurerm_resource_group" "default" {
+ id = (known after apply)
+ location = "westus2"
+ name = "quickstart-aks-dev-rg"
+ tags = (known after apply)
}
# azurerm_role_assignment.default will be created
+ resource "azurerm_role_assignment" "default" {
+ id = (known after apply)
+ name = (known after apply)
+ principal_id = (known after apply)
+ principal_type = (known after apply)
+ role_definition_id = (known after apply)
+ role_definition_name = "Network Contributor"
+ scope = "/subscriptions/b0e04a4a-a321-4b66-b8fd-13715262ba3c/resourceGroups/quickstart-aks-dev-rg"
+ skip_service_principal_aad_check = (known after apply)
}
# random_string.password will be created
+ resource "random_string" "password" {
+ id = (known after apply)
+ length = 32
+ lower = true
+ min_lower = 0
+ min_numeric = 0
+ min_special = 0
+ min_upper = 0
+ number = true
+ result = (known after apply)
+ special = true
+ upper = true
}
Plan: 9 to add, 0 to change, 0 to destroy.
------------------------------------------------------------------------
```

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// Naming
variable "name" {
type = "string"
description = "Location of the azure resource group."
default = "quickstart-aks"
}
variable "environment" {
type = "string"
description = "Name of the deployment environment"
default = "dev"
}
// Resource information
variable "location" {
type = "string"
description = "Location of the azure resource group."
default = "WestUS2"
}
// Node type information
variable "node_count" {
type = "string"
description = "The number of K8S nodes to provision."
default = 3
}
variable "node_type" {
type = "string"
description = "The size of each node."
default = "Standard_D1_v2"
}
variable "dns_prefix" {
type = "string"
description = "DNS Prefix"
default = "tfquickstart"
}