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resource "kubernetes_namespace_v1" "example" { | ||
metadata { | ||
name = "example" | ||
} | ||
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depends_on = [module.aks] | ||
} | ||
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resource "kubernetes_pod" "aspnet_app" { | ||
#checkov:skip=CKV_K8S_8:We don't need readiness probe for this simple example. | ||
#checkov:skip=CKV_K8S_9:We don't need readiness probe for this simple example. | ||
#checkov:skip=CKV_K8S_22:readOnlyRootFilesystem would block our pod from working | ||
#checkov:skip=CKV_K8S_28:capabilities would block our pod from working | ||
metadata { | ||
labels = { | ||
app = "aspnetapp" | ||
} | ||
name = "aspnetapp" | ||
namespace = kubernetes_namespace_v1.example.metadata[0].name | ||
} | ||
spec { | ||
container { | ||
name = "aspnetapp-image" | ||
image = "mcr.microsoft.com/dotnet/samples@sha256:7070894cc10d2b1e68e72057cca22040c5984cfae2ec3e079e34cf0a4da7fcea" | ||
image_pull_policy = "Always" | ||
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port { | ||
container_port = 80 | ||
protocol = "TCP" | ||
} | ||
resources { | ||
limits = { | ||
cpu = "250m" | ||
memory = "256Mi" | ||
} | ||
requests = { | ||
cpu = "250m" | ||
memory = "256Mi" | ||
} | ||
} | ||
security_context {} | ||
} | ||
} | ||
} | ||
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resource "kubernetes_service" "svc" { | ||
metadata { | ||
name = "aspnetapp" | ||
namespace = kubernetes_namespace_v1.example.metadata[0].name | ||
} | ||
spec { | ||
selector = { | ||
app = "aspnetapp" | ||
} | ||
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port { | ||
port = 80 | ||
protocol = "TCP" | ||
target_port = 80 | ||
} | ||
} | ||
} | ||
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resource "kubernetes_ingress_v1" "ing" { | ||
metadata { | ||
annotations = { | ||
"kubernetes.io/ingress.class" : "azure/application-gateway" | ||
} | ||
name = "aspnetapp" | ||
namespace = kubernetes_namespace_v1.example.metadata[0].name | ||
} | ||
spec { | ||
rule { | ||
http { | ||
path { | ||
path = "/" | ||
path_type = "Exact" | ||
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backend { | ||
service { | ||
name = "aspnetapp" | ||
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port { | ||
number = 80 | ||
} | ||
} | ||
} | ||
} | ||
} | ||
} | ||
} | ||
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depends_on = [ | ||
module.aks, | ||
] | ||
} | ||
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resource "time_sleep" "wait_for_ingress" { | ||
create_duration = "15m" | ||
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depends_on = [kubernetes_ingress_v1.ing] | ||
} | ||
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data "kubernetes_ingress_v1" "ing" { | ||
metadata { | ||
name = "aspnetapp" | ||
namespace = kubernetes_namespace_v1.example.metadata[0].name | ||
} | ||
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depends_on = [time_sleep.wait_for_ingress] | ||
} |
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resource "random_id" "prefix" { | ||
byte_length = 8 | ||
} | ||
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resource "random_id" "name" { | ||
byte_length = 8 | ||
} | ||
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resource "azurerm_resource_group" "main" { | ||
count = var.create_resource_group ? 1 : 0 | ||
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location = var.location | ||
name = coalesce(var.resource_group_name, "${random_id.prefix.hex}-rg") | ||
} | ||
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locals { | ||
resource_group = { | ||
name = var.create_resource_group ? azurerm_resource_group.main[0].name : var.resource_group_name | ||
location = var.location | ||
} | ||
} | ||
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resource "azurerm_virtual_network" "test" { | ||
count = var.bring_your_own_vnet ? 1 : 0 | ||
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address_space = ["10.52.0.0/16"] | ||
location = local.resource_group.location | ||
name = "${random_id.prefix.hex}-vn" | ||
resource_group_name = local.resource_group.name | ||
} | ||
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resource "azurerm_subnet" "test" { | ||
count = var.bring_your_own_vnet ? 1 : 0 | ||
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address_prefixes = ["10.52.0.0/24"] | ||
name = "${random_id.prefix.hex}-sn" | ||
resource_group_name = local.resource_group.name | ||
virtual_network_name = azurerm_virtual_network.test[0].name | ||
} | ||
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locals { | ||
appgw_cidr = !var.use_brown_field_application_gateway && !var.bring_your_own_vnet ? "10.225.0.0/16" : "10.52.1.0/24" | ||
} | ||
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resource "azurerm_subnet" "appgw" { | ||
count = var.use_brown_field_application_gateway && var.bring_your_own_vnet ? 1 : 0 | ||
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address_prefixes = [local.appgw_cidr] | ||
name = "${random_id.prefix.hex}-gw" | ||
resource_group_name = local.resource_group.name | ||
virtual_network_name = azurerm_virtual_network.test[0].name | ||
} | ||
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# Locals block for hardcoded names | ||
locals { | ||
backend_address_pool_name = try("${azurerm_virtual_network.test[0].name}-beap", "") | ||
frontend_ip_configuration_name = try("${azurerm_virtual_network.test[0].name}-feip", "") | ||
frontend_port_name = try("${azurerm_virtual_network.test[0].name}-feport", "") | ||
http_setting_name = try("${azurerm_virtual_network.test[0].name}-be-htst", "") | ||
listener_name = try("${azurerm_virtual_network.test[0].name}-httplstn", "") | ||
request_routing_rule_name = try("${azurerm_virtual_network.test[0].name}-rqrt", "") | ||
} | ||
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resource "azurerm_public_ip" "pip" { | ||
count = var.use_brown_field_application_gateway && var.bring_your_own_vnet ? 1 : 0 | ||
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allocation_method = "Static" | ||
location = local.resource_group.location | ||
name = "appgw-pip" | ||
resource_group_name = local.resource_group.name | ||
sku = "Standard" | ||
} | ||
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resource "azurerm_application_gateway" "appgw" { | ||
count = var.use_brown_field_application_gateway && var.bring_your_own_vnet ? 1 : 0 | ||
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location = local.resource_group.location | ||
#checkov:skip=CKV_AZURE_120:We don't need the WAF for this simple example | ||
name = "ingress" | ||
resource_group_name = local.resource_group.name | ||
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backend_address_pool { | ||
name = local.backend_address_pool_name | ||
} | ||
backend_http_settings { | ||
cookie_based_affinity = "Disabled" | ||
name = local.http_setting_name | ||
port = 80 | ||
protocol = "Http" | ||
request_timeout = 1 | ||
} | ||
frontend_ip_configuration { | ||
name = local.frontend_ip_configuration_name | ||
public_ip_address_id = azurerm_public_ip.pip[0].id | ||
} | ||
frontend_port { | ||
name = local.frontend_port_name | ||
port = 80 | ||
} | ||
gateway_ip_configuration { | ||
name = "appGatewayIpConfig" | ||
subnet_id = azurerm_subnet.appgw[0].id | ||
} | ||
http_listener { | ||
frontend_ip_configuration_name = local.frontend_ip_configuration_name | ||
frontend_port_name = local.frontend_port_name | ||
name = local.listener_name | ||
protocol = "Http" | ||
} | ||
request_routing_rule { | ||
http_listener_name = local.listener_name | ||
name = local.request_routing_rule_name | ||
rule_type = "Basic" | ||
backend_address_pool_name = local.backend_address_pool_name | ||
backend_http_settings_name = local.http_setting_name | ||
priority = 1 | ||
} | ||
sku { | ||
name = "Standard_v2" | ||
tier = "Standard_v2" | ||
capacity = 1 | ||
} | ||
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lifecycle { | ||
ignore_changes = [ | ||
tags, | ||
backend_address_pool, | ||
backend_http_settings, | ||
http_listener, | ||
probe, | ||
request_routing_rule, | ||
url_path_map, | ||
] | ||
} | ||
} | ||
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module "aks" { | ||
#checkov:skip=CKV_AZURE_141:We enable admin account here so we can provision K8s resources directly in this simple example | ||
source = "../.." | ||
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prefix = random_id.name.hex | ||
resource_group_name = local.resource_group.name | ||
kubernetes_version = "1.26" # don't specify the patch version! | ||
automatic_channel_upgrade = "patch" | ||
agents_availability_zones = ["1", "2"] | ||
agents_count = null | ||
agents_max_count = 2 | ||
agents_max_pods = 100 | ||
agents_min_count = 1 | ||
agents_pool_name = "testnodepool" | ||
agents_pool_linux_os_configs = [ | ||
{ | ||
transparent_huge_page_enabled = "always" | ||
sysctl_configs = [ | ||
{ | ||
fs_aio_max_nr = 65536 | ||
fs_file_max = 100000 | ||
fs_inotify_max_user_watches = 1000000 | ||
} | ||
] | ||
} | ||
] | ||
agents_type = "VirtualMachineScaleSets" | ||
azure_policy_enabled = true | ||
enable_auto_scaling = true | ||
enable_host_encryption = true | ||
http_application_routing_enabled = true | ||
green_field_application_gateway_for_ingress = var.use_brown_field_application_gateway ? null : { | ||
name = "ingress" | ||
subnet_cidr = local.appgw_cidr | ||
} | ||
brown_field_application_gateway_for_ingress = var.use_brown_field_application_gateway ? { | ||
id = azurerm_application_gateway.appgw[0].id | ||
subnet_id = azurerm_subnet.appgw[0].id | ||
} : null | ||
create_role_assignments_for_application_gateway = var.create_role_assignments_for_application_gateway | ||
local_account_disabled = false | ||
log_analytics_workspace_enabled = false | ||
net_profile_dns_service_ip = "10.0.0.10" | ||
net_profile_service_cidr = "10.0.0.0/16" | ||
network_plugin = "azure" | ||
network_policy = "azure" | ||
os_disk_size_gb = 60 | ||
private_cluster_enabled = false | ||
public_network_access_enabled = true | ||
rbac_aad = true | ||
rbac_aad_managed = true | ||
role_based_access_control_enabled = true | ||
sku_tier = "Standard" | ||
vnet_subnet_id = var.bring_your_own_vnet ? azurerm_subnet.test[0].id : null | ||
depends_on = [ | ||
azurerm_subnet.test, | ||
] | ||
} |
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output "ingress_endpoint" { | ||
depends_on = [time_sleep.wait_for_ingress] | ||
value = "http://${data.kubernetes_ingress_v1.ing.status[0].load_balancer[0].ingress[0].ip}" | ||
} |
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terraform { | ||
required_version = ">=1.3" | ||
required_providers { | ||
azurerm = { | ||
source = "hashicorp/azurerm" | ||
version = ">= 3.51, < 4.0" | ||
} | ||
kubernetes = { | ||
source = "hashicorp/kubernetes" | ||
version = "2.22.0" | ||
} | ||
random = { | ||
source = "hashicorp/random" | ||
version = "3.3.2" | ||
} | ||
time = { | ||
source = "hashicorp/time" | ||
version = "0.9.1" | ||
} | ||
} | ||
} | ||
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provider "azurerm" { | ||
features { | ||
resource_group { | ||
prevent_deletion_if_contains_resources = false | ||
} | ||
} | ||
} | ||
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resource "local_sensitive_file" "k8s_config" { | ||
filename = "${path.module}/k8sconfig" | ||
content = module.aks.kube_config_raw | ||
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depends_on = [module.aks] | ||
} | ||
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# DO NOT DO THIS IN PRODUCTION ENVIRONMENT | ||
provider "kubernetes" { | ||
config_path = local_sensitive_file.k8s_config.filename | ||
# host = module.aks.admin_host | ||
# client_certificate = base64decode(module.aks.admin_client_certificate) | ||
# client_key = base64decode(module.aks.admin_client_key) | ||
# cluster_ca_certificate = base64decode(module.aks.admin_cluster_ca_certificate) | ||
} | ||
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provider "random" {} |
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variable "create_resource_group" { | ||
type = bool | ||
default = true | ||
nullable = false | ||
} | ||
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variable "create_role_assignments_for_application_gateway" { | ||
type = bool | ||
default = true | ||
} | ||
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variable "location" { | ||
default = "eastus" | ||
} | ||
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variable "resource_group_name" { | ||
type = string | ||
default = null | ||
} | ||
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variable "use_brown_field_application_gateway" { | ||
type = bool | ||
default = false | ||
} | ||
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variable "bring_your_own_vnet" { | ||
type = bool | ||
default = true | ||
} |
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