Back2Basics: Working With Amazon Elastic Kubernetes Service (EKS)

Read the series here: Back2Basics: Amazon EKS

Installation

Depending on your OS, select the installation method here: https://opentofu.org/docs/intro/install/

Provision the infrastructure

1. Make necessary adjustment on the variables.
2. Run tofu init to initialize the modules and other necessary resources.
3. Run tofu plan to check what will be created/deleted.
4. Run tofu apply to apply the changes. Type yes when asked to proceed.

Fetch kubeconfig to access the cluster

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

Check what's inside the cluster

# List all pods in all namespaces
kubectl get pods -A

# List all deployments in kube-system
kubectl get deployment -n kube-system

# List all daemonsets in kube-system
kubectl get daemonset -n kube-system

# List all nodes
kubectl get nodes

Let's try to deploy a simple app

# Create a deployment
kubectl create deployment my-app --image nginx

# Scale the replicas of my-app deployment
kubectl scale deployment/my-app --replicas 2

# Check the pods
kubectl get pods

# Delete the deployment
kubectl delete deployment my-app