This Bash script manages the creation and destruction of an Amazon EKS cluster using eksctl. It supports deploying a new cluster with specific configurations like region, node type, and VPC CIDR. Additionally, it can install a cluster autoscaler and NGINX Ingress controller.

• AWS CLI installed and configured
• eksctl installed
• kubectl installed
• Helm installed (for NGINX Ingress)

• region: AWS region (default eu-central-1)
• version: EKS version (default '1.27')
• cidr: VPC CIDR (default '10.0.0.0/16')
• node_type: EC2 instance type for nodes (default 't2.small')

To create a cluster:

./cluster.sh -c [name of the cluster]

To destroy a cluster:

./cluster.sh -d [name of the cluster]

Example:

./cluster.sh -c eks-2023
./cluster.sh -d eks-2023

Functions

• create_cluster: Creates a new EKS cluster with the specified configurations.
• install_autoscaler: Installs the Kubernetes cluster autoscaler.
• install_ingress_nginx: Installs the NGINX Ingress controller using Helm.
• destroy_ingress_nginx: Uninstalls the NGINX Ingress controller.
• delete_cluster: Deletes the specified EKS cluster and associated resources.

The script includes additional helper functions and error handling to streamline the process of managing EKS clusters.