如何使用 Terraform 配置 AWS EKS 自动缩放器？

Question

我正在使用 AWS EKS 提供商 (github.com/terraform-aws-modules/terraform-aws-eks)。我正在使用https://learn.hashicorp.com/terraform/aws/eks-intro跟随教程

但是，这似乎没有启用自动缩放功能……似乎缺少cluster-autoscalerpod/守护进程？

Terraform 能否提供此功能？或者我是否需要按照以下指南进行设置：https : //eksworkshop.com/scaling/deploy_ca/

Answer 1

您可以使用 Terraform 部署 Kubernetes 资源。有一个 Kubernetes 提供者和一个 Helm 提供者。

data "aws_eks_cluster_auth" "authentication" {
  name = "${var.cluster_id}"
}

provider "kubernetes" {
  # Use the token generated by AWS iam authenticator to connect as the provider does not support exec auth
  # see: https://github.com/terraform-providers/terraform-provider-kubernetes/issues/161
  host = "${var.cluster_endpoint}"

  cluster_ca_certificate = "${base64decode(var.cluster_certificate_authority_data)}"
  token                  = "${data.aws_eks_cluster_auth.authentication.token}"
  load_config_file       = false
}

provider "helm" {
  install_tiller  = "true"
  tiller_image    = "gcr.io/kubernetes-helm/tiller:v2.12.3"
}

resource "helm_release" "cluster_autoscaler" {
  name       = "cluster-autoscaler"
  repository = "stable"
  chart      = "cluster-autoscaler"
  namespace  = "kube-system"
  version    = "0.12.2"

  set {
    name  = "autoDiscovery.enabled"
    value = "true"
  }

  set {
    name  = "autoDiscovery.clusterName"
    value = "${var.cluster_name}"
  }

  set {
    name  = "cloudProvider"
    value = "aws"
  }

  set {
    name  = "awsRegion"
    value = "${data.aws_region.current_region.name}"
  }

  set {
    name  = "rbac.create"
    value = "true"
  }

  set {
    name  = "sslCertPath"
    value = "/etc/ssl/certs/ca-bundle.crt"
  }
}