Terraform

This project uses terraform workspaces https://app.terraform.io/.

User terraform cli to setup locally.

terraform init
# terraform workspace list
# terraform workspace select prod|stage

terraform plan | apply # to make changes

EKS Cluster

To configure kubectl, you need both kubectl and AWS IAM Authenticator.

The following command will get the access credentials for your cluster and automatically configure kubectl.

$ aws eks --region us-west-2 update-kubeconfig

You can view these outputs again by running:

$ terraform output

kubectl apply -f kube2iam/serviceaccount.yaml
kubectl apply -f kube2iam/clusterrole.yaml
kubectl apply -f kube2iam/daemonset.yaml

The Kubernetes Metrics Server, used to gather metrics such as cluster CPU and memory usage over time, is not deployed by default in EKS clusters.

Download and unzip the metrics server by running the following command.

helm install metrics-server stable/metrics-server \
  --namespace kube-system \
  -f metrics-server/values.yaml

kubectl apply -f kube2iam/serviceaccount.yaml
kubectl apply -f kube2iam/clusterrole.yaml
kubectl apply -f kube2iam/daemonset.yaml

helm install cluster-autoscaler --namespace kube-system autoscaler/cluster-autoscaler-chart --values=misc/cluster-autoscaler-chart-values.yaml

More info on scaling down