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05-ingress-controller.tf
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05-ingress-controller.tf
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#
# Setup k8s ingress controller and ELB/NLB
#
resource "aws_iam_role_policy" "nginx-ingress" {
name = "${var.cluster_id}-node-ingress"
role = var.worker_iam_role_name
policy = <<EOF
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"acm:ListCertificates",
"acm:DescribeCertificate",
"autoscaling:DescribeAutoScalingGroups",
"autoscaling:AttachLoadBalancers",
"autoscaling:DetachLoadBalancers",
"autoscaling:DetachLoadBalancerTargetGroups",
"autoscaling:AttachLoadBalancerTargetGroups",
"autoscaling:DescribeLoadBalancerTargetGroups",
"elasticloadbalancing:*",
"ec2:Describe*",
"iam:GetServerCertificate",
"iam:ListServerCertificates"
],
"Resource": [
"*"
]
}]
}
EOF
}
data "aws_acm_certificate" "eks-acm" {
domain = var.eks_extra_config["domain"]
statuses = ["ISSUED"]
types = ["AMAZON_ISSUED"]
most_recent = true
}
locals {
acm_certificate_arn = coalesce(lookup(var.eks_extra_config, "acm_certificate_arn", ""), data.aws_acm_certificate.eks-acm.arn)
}
resource "kubernetes_config_map" "tcp-services" {
metadata {
name = "tcp-services"
namespace = "kube-system"
}
}
resource "kubernetes_config_map" "udp-services" {
metadata {
name = "udp-services"
namespace = "kube-system"
}
}
data "template_file" "nginx-ingress-values" {
template = <<EOF
controller:
service:
targetPorts:
https: 80
annotations:
service.beta.kubernetes.io/aws-load-balancer-backend-protocol: http
service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: "60"
service.beta.kubernetes.io/aws-load-balancer-internal: 0.0.0.0/0
service.beta.kubernetes.io/aws-load-balancer-ssl-cert: ${local.acm_certificate_arn}
service.beta.kubernetes.io/aws-load-balancer-ssl-negotiation-policy: ELBSecurityPolicy-TLS-1-2-2017-01
service.beta.kubernetes.io/aws-load-balancer-ssl-ports: https
service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled: "true"
config:
server-tokens: "false"
ssl-redirect: "true"
use-forwarded-headers: "true"
use-proxy-protocol: "false"
enable-vts-status: "true"
proxy-real-ip-cidr: 0.0.0.0/0
proxy-body-size: 5G
extraArgs:
tcp-services-configmap: $(POD_NAMESPACE)/tcp-services
udp-services-configmap: $(POD_NAMESPACE)/udp-services
annotations-prefix: nginx.ingress.kubernetes.io
publishService:
enabled: true
replicaCount: ${length(data.aws_availability_zones.current.names)}
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- weight: 100
podAffinityTerm:
topologyKey: kubernetes.io/hostname
labelSelector:
matchExpressions:
- key: release
operator: In
values:
- nginx-ingress
defaultBackend:
enabled: false
metrics:
enabled: true
EOF
}
resource "helm_release" "nginx-ingress" {
name = "nginx-ingress"
namespace = "kube-system"
repository = "https://kubernetes.github.io/ingress-nginx"
chart = "ingress-nginx"
version = var.helm_release["ingress-nginx"]
values = [data.template_file.nginx-ingress-values.rendered]
# wait = false
depends_on = [kubernetes_config_map.tcp-services, kubernetes_config_map.udp-services]
}
data "template_file" "nginx-ingress-external-values" {
template = <<EOF
controller:
service:
targetPorts:
https: 80
annotations:
service.beta.kubernetes.io/aws-load-balancer-backend-protocol: http
service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: "60"
service.beta.kubernetes.io/aws-load-balancer-ssl-cert: ${local.acm_certificate_arn}
service.beta.kubernetes.io/aws-load-balancer-ssl-negotiation-policy: ELBSecurityPolicy-TLS-1-2-2017-01
service.beta.kubernetes.io/aws-load-balancer-ssl-ports: https
service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled: "true"
config:
server-tokens: "false"
ssl-redirect: "true"
use-forwarded-headers: "true"
use-proxy-protocol: "false"
enable-vts-status: "true"
proxy-real-ip-cidr: 0.0.0.0/0
proxy-body-size: 5G
ingressClass: nginx-external
extraArgs:
tcp-services-configmap: $(POD_NAMESPACE)/tcp-services
udp-services-configmap: $(POD_NAMESPACE)/udp-services
annotations-prefix: nginx.ingress.kubernetes.io
publishService:
enabled: true
replicaCount: ${length(data.aws_availability_zones.current.names)}
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- weight: 100
podAffinityTerm:
topologyKey: kubernetes.io/hostname
labelSelector:
matchExpressions:
- key: release
operator: In
values:
- nginx-ingress-external
defaultBackend:
enabled: false
metrics:
enabled: true
EOF
}
resource "helm_release" "nginx-ingress-external" {
name = "nginx-ingress-external"
namespace = "kube-system"
repository = "https://kubernetes.github.io/ingress-nginx"
chart = "ingress-nginx"
version = var.helm_release["ingress-nginx"]
values = [data.template_file.nginx-ingress-external-values.rendered]
# wait = false
depends_on = [kubernetes_config_map.tcp-services, kubernetes_config_map.udp-services]
}