Post-Tyranny-Tech-Infrastru.../tofu/network.tf

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# Private Network Configuration
# Enables client servers to communicate without public IPs
# Private Network
resource "hcloud_network" "private" {
name = "client-private-network"
ip_range = "10.0.0.0/16"
labels = {
managed = "terraform"
purpose = "client-internal"
}
}
# Subnet for client servers
resource "hcloud_network_subnet" "clients" {
network_id = hcloud_network.private.id
type = "cloud"
network_zone = "eu-central"
ip_range = "10.0.0.0/24"
}
# Note: Client servers attach to private network via main.tf dynamic block
# Edge Server Configuration
# Single public-facing reverse proxy for all clients
# SSH key for edge server
resource "hcloud_ssh_key" "edge" {
name = "edge-server-deploy-key"
public_key = file("${path.module}/../keys/ssh/edge.pub")
}
# Edge server (public IP + private network)
resource "hcloud_server" "edge" {
name = "edge"
server_type = var.edge_server_type
image = "ubuntu-24.04"
location = var.edge_location
ssh_keys = [hcloud_ssh_key.edge.id]
firewall_ids = [hcloud_firewall.client_firewall.id]
labels = {
role = "edge-proxy"
managed = "terraform"
}
# Enable backups
backups = var.enable_snapshots
# User data for initial setup
user_data = <<-EOF
#cloud-config
package_update: true
package_upgrade: true
packages:
- curl
- wget
- git
- python3
- python3-pip
runcmd:
- hostnamectl set-hostname edge
EOF
# Ensure public network is enabled
public_net {
ipv4_enabled = true
ipv6_enabled = true
}
}
# Attach edge server to private network
resource "hcloud_server_network" "edge" {
server_id = hcloud_server.edge.id
network_id = hcloud_network.private.id
ip = "10.0.0.2" # Fixed IP for edge server (10.0.0.1 is gateway)
}
# NAT Gateway Route
# Routes all internet-bound traffic from private network through edge server
resource "hcloud_network_route" "nat_gateway" {
network_id = hcloud_network.private.id
destination = "0.0.0.0/0"
gateway = "10.0.0.2" # Edge server acts as NAT gateway
}