# Configuring AWS provider
provider "aws" {
region = var.region
access_key = var.AWS_ACCESS_KEY_ID
secret_key = var.AWS_SECRET_ACCESS_KEY
}
# Storing the state in the S3 bucket
terraform {
backend "s3" {
bucket = "venturenox"
key = "eks-cluster/terraform.tfstate"
region = "eu-north-1"
encrypt = true
}
}
# Create VPC
resource "aws_vpc" "default" {
cidr_block = var.vpc_cidr
}
# Create Subnets
data "aws_availability_zones" "available" {}
resource "aws_subnet" "subnet" {
count = 2
vpc_id = aws_vpc.default.id
cidr_block = cidrsubnet(var.vpc_cidr, 8, count.index)
availability_zone = element(data.aws_availability_zones.available.names, count.index)
}
# Create IAM Role for EKS Cluster
resource "aws_iam_role" "eks_cluster_role" {
name = "my-eks-cluster-role"
assume_role_policy = jsonencode({
Version = "2012-10-17",
Statement = [
{
Action = "sts:AssumeRole",
Effect = "Allow",
Principal = {
Service = "eks.amazonaws.com"
}
}
]
})
}
# Attach Policies to IAM Role
resource "aws_iam_role_policy_attachment" "eks_cluster_policy" {
role = aws_iam_role.eks_cluster_role.name
policy_arn = "arn:aws:iam::aws:policy/AmazonEKSClusterPolicy"
}
resource "aws_iam_role_policy_attachment" "eks_vpc_policy" {
role = aws_iam_role.eks_cluster_role.name
policy_arn = "arn:aws:iam::aws:policy/AmazonEKSVPCResourceController"
}
# Create EKS Cluster
resource "aws_eks_cluster" "eks" {
name = var.cluster_name
role_arn = aws_iam_role.eks_cluster_role.arn
vpc_config {
subnet_ids = aws_subnet.subnet[*].id
}
}
# Create IAM Role for EKS Node Group
resource "aws_iam_role" "eks_node_group_role" {
name = "my-eks-node-group-role"
assume_role_policy = jsonencode({
Version = "2012-10-17",
Statement = [
{
Action = "sts:AssumeRole",
Effect = "Allow",
Principal = {
Service = "ec2.amazonaws.com"
}
}
]
})
}
# Attach Policies to Node Group IAM Role
resource "aws_iam_role_policy_attachment" "eks_worker_node_policy" {
role = aws_iam_role.eks_node_group_role.name
policy_arn = "arn:aws:iam::aws:policy/AmazonEKSWorkerNodePolicy"
}
resource "aws_iam_role_policy_attachment" "eks_cni_policy" {
role = aws_iam_role.eks_node_group_role.name
policy_arn = "arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy"
}
resource "aws_iam_role_policy_attachment" "eks_ec2_container_policy" {
role = aws_iam_role.eks_node_group_role.name
policy_arn = "arn:aws:iam::aws:policy/AmazonEC2ContainerRegistryReadOnly"
}
# Create EKS Node Group
resource "aws_eks_node_group" "node_group" {
cluster_name = aws_eks_cluster.eks.name
node_group_name = var.node_group_name
node_role_arn = aws_iam_role.eks_node_group_role.arn
subnet_ids = aws_subnet.subnet[*].id
scaling_config {
desired_size = 1
max_size = 2
min_size = 1
}
instance_types = ["t3.micro"]
remote_access {
ec2_ssh_key = var.ssh_key
}
}
# Define Outputs
output "vpc_id" {
value = aws_vpc.default.id
sensitive = true
}
output "subnet_ids" {
value = aws_subnet.subnet[*].id
}
output "eks_cluster_name" {
value = aws_eks_cluster.eks.name
}
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