Elastic Kubernetes Service

Set up a managed kubernetes cluster on AWS (EKS) using Hashicorp Terraform Infrastructure as Code tool.

Note

This is a work in progress. Feel free to open PRs if you want to contribute to the project.

Working with Terraform

In order to setup the infrastructure for a managed Kubernetes cluster on AWS (EKS), we will use Hashicorp Terraform to install the required resources on the AWS cloud. You will need to follow the examples.tfvars located here in order to successfully deploy the infrastructure on AWS.

Important

Please note that you will need to configure the AWS_PROFILE environment variable to match your specified local AWS CLI profile in order to successfully deploy the infrastructure on AWS. You can do so by running export AWS_PROFILE=<profile-name> to set the variable locally on your terminal.

• Initialize Terraform

  terraform init

• Plan the infrastructure installation

  terraform plan -var-file="prod.tfvars"

• Apply the infrastructure changes

  terraform apply --auto-approve -var-file="prod.tfvars"

Configure KUBECONFIG

To access the cluster from the command line, we need to set some variables beforehand.

• REGION: This should be set to the AWS region in which we have deployed our EKS cluster.

  export REGION="us-east-1"

• CLUSTER_NAME: This should be set to the cluster name we have provided in our IaC using Terraform.

  export CLUSTER_NAME="pwncorp-dev-eks-39htbsdk"

Note

You need to configure your AWS_PROFILE environment variable before you can run the below command to get the AWS EKS cluster credentials

In order to update the kubeconfig on your local workstation, we need to run the following command:

aws eks update-kubeconfig --region $REGION --name $CLUSTER_NAME

You should now be able to access the cluster via your local terminal.

Important

Since this is still a WIP, we are planning to provide access to the cluster via a bastion host instead of direct access to the cluster after running the above command. Feel free to open a PR in case you want to contribute and help us out in setting up a bastion host to access the AWS EKS cluster.

Working with ArgoCD

• To setup and install AgoCD on the cluster, run the command:

kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

• To access the ArgoCD dashboard, we need to port-forward and expose the port for ArgoCD:

# remember to open the port forward in another terminal window
# the port should always be open to access the ArgoCD dashboard
kubectl port-forward svc/argocd-server 8080:443 -n argocd

• To get the initial admin password to access the ArgoCD dashboard, we need to get the base64 encoded password from the secrets resource in the argocd namespace and display the value using -o yaml parameter. Once done, we can then decode the base64 value:

echo "<base64-encoded-pwd> | base64 -d"
# ignore the % at the end of the decoded string

You can now access the ArgoCD dashboard via https://localhost:8080 and login using the username admin and password retrieved from the previous step.

LICENSE

This project is licensed under the MIT open-source license.

Authors

Siddharth Rawat