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main.tf
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# Fetch AWS subnet data
data "aws_subnet" "main" {
id = var.subnet_id
}
# NGINX Controller
resource "aws_instance" "nginx_controller" {
ami = var.ami_id
instance_type = var.instance_type
key_name = var.key_name
associate_public_ip_address = true
vpc_security_group_ids = [
aws_security_group.nginx_controller.id,
]
subnet_id = var.subnet_id
root_block_device {
volume_size = 130
}
tags = {
Name = var.name_prefix != "" ? "${var.name_prefix}_nginx_controller" : "nginx_controller"
Owner = var.owner != "" ? var.owner : "Terraform"
}
}
# Fetch NGINX Controller's EIP allocation ID
data "dns_a_record_set" "nginx_controller" {
host = var.nginx_controller_fqdn
}
data "aws_eip" "nginx_controller_public_ip" {
public_ip = data.dns_a_record_set.nginx_controller.addrs[0]
}
# Associate NGINX Controller's EIP
resource "aws_eip_association" "nginx_controller" {
instance_id = aws_instance.nginx_controller.id
allocation_id = data.aws_eip.nginx_controller_public_ip.id
}
# NGINX Controller security group
resource "aws_security_group" "nginx_controller" {
name = var.name_prefix != "" ? "${var.name_prefix}_nginx_controller_sg" : "nginx_controller_sg"
description = "Security group for NGINX Controller instance"
vpc_id = data.aws_subnet.main.vpc_id
tags = {
Name = var.name_prefix != "" ? "${var.name_prefix}_nginx_controller_sg" : "nginx_controller_sg"
Owner = var.owner != "" ? var.owner : "Terraform"
}
}
resource "aws_security_group_rule" "nginx_controller_ingress_ssh" {
type = "ingress"
from_port = 22
to_port = 22
protocol = "tcp"
security_group_id = aws_security_group.nginx_controller.id
cidr_blocks = [
"0.0.0.0/0",
]
}
resource "aws_security_group_rule" "nginx_controller_ingress_https" {
type = "ingress"
from_port = 443
to_port = 443
protocol = "tcp"
security_group_id = aws_security_group.nginx_controller.id
cidr_blocks = [
"0.0.0.0/0",
]
}
resource "aws_security_group_rule" "nginx_controller_ingress_agent" {
type = "ingress"
from_port = 8443
to_port = 8443
protocol = "tcp"
security_group_id = aws_security_group.nginx_controller.id
cidr_blocks = [
"0.0.0.0/0",
]
}
resource "aws_security_group_rule" "nginx_controller_egress_smtp" {
type = "egress"
from_port = 25
to_port = 25
protocol = "tcp"
security_group_id = aws_security_group.nginx_controller.id
cidr_blocks = [
data.aws_subnet.main.cidr_block,
]
}
resource "aws_security_group_rule" "nginx_controller_egress_http" {
type = "egress"
from_port = 80
to_port = 80
protocol = "tcp"
security_group_id = aws_security_group.nginx_controller.id
cidr_blocks = [
"0.0.0.0/0",
]
}
resource "aws_security_group_rule" "nginx_controller_egress_https" {
type = "egress"
from_port = 443
to_port = 443
protocol = "tcp"
security_group_id = aws_security_group.nginx_controller.id
cidr_blocks = [
"0.0.0.0/0",
]
}
resource "aws_security_group_rule" "nginx_controller_egress_postgresql" {
type = "egress"
from_port = 5432
to_port = 5432
protocol = "tcp"
security_group_id = aws_security_group.nginx_controller.id
cidr_blocks = [
data.aws_subnet.main.cidr_block,
]
}