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Terraform template for AWS EKS with Fargate profile

This terraform template can be used to setup the AWS infrastructure for a dockerized application running on EKS with a Fargate profile.

Ingress is based on https://docs.aws.amazon.com/eks/latest/userguide/alb-ingress.html and https://medium.com/@marcincuber/amazon-eks-with-oidc-provider-iam-roles-for-kubernetes-services-accounts-59015d15cb0c.

Due to the fact that EKS with Fargate profiles is not yet supported in all regions (https://docs.aws.amazon.com/eks/latest/userguide/fargate.html) this template uses the eu-west-1 (Ireland)region.

Prerequisites

This template requires aws-iam-authenticator and openssl to be installed

Known limitations

  • Although the namespace default is set in the fargate profile (meaning pods will be executed on managed nodes), CoreDNS can currently only run on a fargate profile if the CoreDNS deployment is patched after the cluster is created (see hashicorp/terraform-provider-aws#11327 or https://docs.aws.amazon.com/eks/latest/userguide/fargate-getting-started.html#fargate-gs-coredns for instructions). Therefore this template also creates a node-group for the kube-system namespace, which is also used for the Ingress controller.

  • By default the config file for kubectl is created in ~/.kube directory. If any configuration already exists there, it will be overwritten! To preserve any pre-existing configuration, change the kubeconfig_path variable.