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cert-manager.tf
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cert-manager.tf
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locals {
cert-manager = merge(
local.helm_defaults,
{
name = local.helm_dependencies[index(local.helm_dependencies.*.name, "cert-manager")].name
chart = local.helm_dependencies[index(local.helm_dependencies.*.name, "cert-manager")].name
repository = local.helm_dependencies[index(local.helm_dependencies.*.name, "cert-manager")].repository
chart_version = local.helm_dependencies[index(local.helm_dependencies.*.name, "cert-manager")].version
namespace = "cert-manager"
service_account_name = "cert-manager"
create_iam_resources_irsa = true
enabled = false
iam_policy_override = null
default_network_policy = true
acme_email = "[email protected]"
acme_http01_enabled = true
acme_http01_ingress_class = "nginx"
acme_dns01_enabled = true
allowed_cidrs = ["0.0.0.0/0"]
csi_driver = false
name_prefix = "${var.cluster-name}-cert-manager"
},
var.cert-manager
)
values_cert-manager = <<VALUES
global:
priorityClassName: ${local.priority-class["create"] ? kubernetes_priority_class.kubernetes_addons[0].metadata[0].name : ""}
serviceAccount:
name: ${local.cert-manager["service_account_name"]}
annotations:
eks.amazonaws.com/role-arn: "${local.cert-manager["enabled"] && local.cert-manager["create_iam_resources_irsa"] ? module.iam_assumable_role_cert-manager.iam_role_arn : ""}"
prometheus:
servicemonitor:
enabled: ${local.kube-prometheus-stack["enabled"] || local.victoria-metrics-k8s-stack["enabled"]}
securityContext:
fsGroup: 1001
installCRDs: true
VALUES
}
module "iam_assumable_role_cert-manager" {
source = "terraform-aws-modules/iam/aws//modules/iam-assumable-role-with-oidc"
version = "~> 5.0"
create_role = local.cert-manager["enabled"] && local.cert-manager["create_iam_resources_irsa"]
role_name = local.cert-manager["name_prefix"]
provider_url = replace(var.eks["cluster_oidc_issuer_url"], "https://", "")
role_policy_arns = local.cert-manager["enabled"] && local.cert-manager["create_iam_resources_irsa"] ? [aws_iam_policy.cert-manager[0].arn] : []
number_of_role_policy_arns = 1
oidc_fully_qualified_subjects = ["system:serviceaccount:${local.cert-manager["namespace"]}:${local.cert-manager["service_account_name"]}"]
tags = local.tags
}
resource "aws_iam_policy" "cert-manager" {
count = local.cert-manager["enabled"] && local.cert-manager["create_iam_resources_irsa"] ? 1 : 0
name = local.cert-manager["name_prefix"]
policy = local.cert-manager["iam_policy_override"] == null ? data.aws_iam_policy_document.cert-manager.json : local.cert-manager["iam_policy_override"]
tags = local.tags
}
data "aws_iam_policy_document" "cert-manager" {
statement {
effect = "Allow"
actions = [
"route53:GetChange"
]
resources = ["arn:${local.arn-partition}:route53:::change/*"]
}
statement {
effect = "Allow"
actions = [
"route53:ChangeResourceRecordSets",
"route53:ListResourceRecordSets"
]
resources = ["arn:${local.arn-partition}:route53:::hostedzone/*"]
}
statement {
effect = "Allow"
actions = [
"route53:ListHostedZonesByName"
]
resources = ["*"]
}
}
resource "kubernetes_namespace" "cert-manager" {
count = local.cert-manager["enabled"] ? 1 : 0
metadata {
annotations = {
"certmanager.k8s.io/disable-validation" = "true"
}
labels = {
name = local.cert-manager["namespace"]
}
name = local.cert-manager["namespace"]
}
}
resource "helm_release" "cert-manager" {
count = local.cert-manager["enabled"] ? 1 : 0
repository = local.cert-manager["repository"]
name = local.cert-manager["name"]
chart = local.cert-manager["chart"]
version = local.cert-manager["chart_version"]
timeout = local.cert-manager["timeout"]
force_update = local.cert-manager["force_update"]
recreate_pods = local.cert-manager["recreate_pods"]
wait = local.cert-manager["wait"]
atomic = local.cert-manager["atomic"]
cleanup_on_fail = local.cert-manager["cleanup_on_fail"]
dependency_update = local.cert-manager["dependency_update"]
disable_crd_hooks = local.cert-manager["disable_crd_hooks"]
disable_webhooks = local.cert-manager["disable_webhooks"]
render_subchart_notes = local.cert-manager["render_subchart_notes"]
replace = local.cert-manager["replace"]
reset_values = local.cert-manager["reset_values"]
reuse_values = local.cert-manager["reuse_values"]
skip_crds = local.cert-manager["skip_crds"]
verify = local.cert-manager["verify"]
values = [
local.values_cert-manager,
local.cert-manager["extra_values"]
]
namespace = kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]
depends_on = [
kubectl_manifest.prometheus-operator_crds
]
}
data "kubectl_path_documents" "cert-manager_cluster_issuers" {
pattern = "${path.module}/templates/cert-manager-cluster-issuers.yaml.tpl"
vars = {
aws_region = data.aws_region.current.name
acme_email = local.cert-manager["acme_email"]
acme_http01_enabled = local.cert-manager["acme_http01_enabled"]
acme_http01_ingress_class = local.cert-manager["acme_http01_ingress_class"]
acme_dns01_enabled = local.cert-manager["acme_dns01_enabled"]
}
}
resource "time_sleep" "cert-manager_sleep" {
count = local.cert-manager["enabled"] && (local.cert-manager["acme_http01_enabled"] || local.cert-manager["acme_dns01_enabled"]) ? 1 : 0
depends_on = [helm_release.cert-manager]
create_duration = "120s"
}
resource "kubectl_manifest" "cert-manager_cluster_issuers" {
count = local.cert-manager["enabled"] && (local.cert-manager["acme_http01_enabled"] || local.cert-manager["acme_dns01_enabled"]) ? length(data.kubectl_path_documents.cert-manager_cluster_issuers.documents) : 0
yaml_body = element(data.kubectl_path_documents.cert-manager_cluster_issuers.documents, count.index)
depends_on = [
helm_release.cert-manager,
kubernetes_namespace.cert-manager,
time_sleep.cert-manager_sleep
]
}
resource "kubernetes_network_policy" "cert-manager_default_deny" {
count = local.cert-manager["enabled"] && local.cert-manager["default_network_policy"] ? 1 : 0
metadata {
name = "${kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]}-default-deny"
namespace = kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]
}
spec {
pod_selector {
}
policy_types = ["Ingress"]
}
}
resource "kubernetes_network_policy" "cert-manager_allow_namespace" {
count = local.cert-manager["enabled"] && local.cert-manager["default_network_policy"] ? 1 : 0
metadata {
name = "${kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]}-allow-namespace"
namespace = kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]
}
spec {
pod_selector {
}
ingress {
from {
namespace_selector {
match_labels = {
name = kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]
}
}
}
}
policy_types = ["Ingress"]
}
}
resource "kubernetes_network_policy" "cert-manager_allow_monitoring" {
count = local.cert-manager["enabled"] && local.cert-manager["default_network_policy"] ? 1 : 0
metadata {
name = "${kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]}-allow-monitoring"
namespace = kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]
}
spec {
pod_selector {
}
ingress {
ports {
port = "9402"
protocol = "TCP"
}
from {
namespace_selector {
match_labels = {
"${local.labels_prefix}/component" = "monitoring"
}
}
}
}
policy_types = ["Ingress"]
}
}
resource "kubernetes_network_policy" "cert-manager_allow_control_plane" {
count = local.cert-manager["enabled"] && local.cert-manager["default_network_policy"] ? 1 : 0
metadata {
name = "${kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]}-allow-control-plane"
namespace = kubernetes_namespace.cert-manager.*.metadata.0.name[count.index]
}
spec {
pod_selector {
match_expressions {
key = "app.kubernetes.io/name"
operator = "In"
values = ["webhook"]
}
}
ingress {
ports {
port = "10250"
protocol = "TCP"
}
dynamic "from" {
for_each = local.cert-manager["allowed_cidrs"]
content {
ip_block {
cidr = from.value
}
}
}
}
policy_types = ["Ingress"]
}
}