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main.tf
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/*
Name: Kubernetes Cluster
Description: Terraform to create a Jenkins Server on AWS.
Updated Date: 2022-01-01
*/
resource "aws_security_group" "KubernetesMasterNodeSG" {
name = "KubernetesMasterNodeSG"
description = "Security Group for Kubernetes Master Node"
vpc_id = data.aws_vpc.default.id
ingress {
description = "SSH to Master Node Server"
from_port = 22
to_port = 22
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"] //FIXME: Do not hardcode your IP and do not have it open to the world.
}
ingress {
description = "Kubernetes API Server"
from_port = 6443
to_port = 6443
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
ingress {
description = "ETCD Server Client API"
from_port = 2379
to_port = 2380
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
ingress {
description = "Kubelet API"
from_port = 10250
to_port = 10250
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
ingress {
description = "Kube-Scheduler"
from_port = 10259
to_port = 10259
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
ingress {
description = "Kube-Controller-Manager"
from_port = 10257
to_port = 10257
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
egress {
from_port = 0
to_port = 0
protocol = "-1"
cidr_blocks = ["0.0.0.0/0"]
description = "Allow All Traffic"
}
tags = {
Name = "Master Node Security Group"
}
}
resource "aws_security_group" "KubernetesWorkerNodeSG" {
name = "KubernetesWorkerNodeSG"
description = "Security Group for Kubernetes Worker Node"
vpc_id = data.aws_vpc.default.id
ingress {
description = "SSH to Worker Node Server"
from_port = 22
to_port = 22
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"] //FIXME: Do not hardcode your IP and do not have it open to the world.
}
ingress {
description = "Kubelet API"
from_port = 10250
to_port = 10250
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
ingress {
description = "NodePort Services"
from_port = 30000
to_port = 32767
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
egress {
from_port = 0
to_port = 0
protocol = "-1"
cidr_blocks = ["0.0.0.0/0"]
description = "Allow All Traffic"
}
tags = {
Name = "Worker Node Security Group"
}
}
resource "aws_instance" "WorkerNode" {
count = var.num_of_workers
ami = data.aws_ami.latest_ubuntu_ami.id
# instance_type = var.instance_type_env["${var.instance_type}"]
instance_type = "t2.micro"
key_name = "terraform-key"
vpc_security_group_ids = [aws_security_group.KubernetesWorkerNodeSG.id]
provisioner "remote-exec" {
script = "./scripts/install-components.sh"
}
connection {
type = "ssh"
host = self.public_ip
user = "ubuntu"
private_key = file("~/Desktop/ssh-keys/terraform-key.pem")
}
tags = {
Name = "Worker Node ${count.index}"
}
}
resource "aws_instance" "MasterNode" {
ami = data.aws_ami.latest_ubuntu_ami.id
# instance_type = var.instance_type_env["${var.instance_type}"]
instance_type = "t2.medium"
key_name = "terraform-key"
vpc_security_group_ids = [aws_security_group.KubernetesMasterNodeSG.id]
provisioner "remote-exec" {
scripts = ["./scripts/install-components.sh", "./scripts/kube-init.sh"]
}
connection {
type = "ssh"
host = self.public_ip
user = "ubuntu"
private_key = file("~/Desktop/ssh-keys/terraform-key.pem")
}
tags = {
Name = "Master Node"
}
}