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gcp.tf
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gcp.tf
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data "google_project" "gcp_project" {
project_id = var.gcp_project_id
}
data "google_compute_network" "vpc" {
project = data.google_project.gcp_project.project_id
name = var.gcp_network_name
}
resource "google_compute_ha_vpn_gateway" "ha_gateway" {
name = "to-oci"
project = data.google_project.gcp_project.project_id
region = var.gcp_vpn_region
network = data.google_compute_network.vpc.name
}
resource "google_compute_external_vpn_gateway" "external_gateway" {
count = 2
name = "oci-${count.index + 1}"
project = data.google_project.gcp_project.project_id
redundancy_type = "TWO_IPS_REDUNDANCY"
interface {
id = "0"
ip_address = data.oci_core_ipsec_connection_tunnels.gcp[count.index].ip_sec_connection_tunnels[0].vpn_ip
}
interface {
id = "1"
ip_address = data.oci_core_ipsec_connection_tunnels.gcp[count.index].ip_sec_connection_tunnels[1].vpn_ip
}
}
resource "google_compute_router" "router" {
name = "vpn-to-oci"
project = data.google_project.gcp_project.project_id
region = var.gcp_vpn_region
network = data.google_compute_network.vpc.name
bgp {
advertise_mode = "CUSTOM"
advertised_groups = ["ALL_SUBNETS"]
advertised_ip_ranges {
range = "199.36.153.8/30"
description = "private.googleapis.com"
}
advertised_ip_ranges {
range = "199.36.153.4/30"
description = "restricted.googleapis.com"
}
asn = var.gcp_asn
}
}
resource "google_compute_vpn_tunnel" "tunnels_primary" {
depends_on = [
oci_core_ipsec_connection_tunnel_management.primary,
]
count = 2
project = data.google_project.gcp_project.project_id
region = var.gcp_vpn_region
name = "oci-primary-${count.index + 1}"
router = google_compute_router.router.id
peer_external_gateway = google_compute_external_vpn_gateway.external_gateway[count.index].id
peer_external_gateway_interface = 0
vpn_gateway_interface = count.index
ike_version = 2
shared_secret = local.shared_secret
vpn_gateway = google_compute_ha_vpn_gateway.ha_gateway.self_link
}
resource "google_compute_vpn_tunnel" "tunnels_secondary" {
depends_on = [
oci_core_ipsec_connection_tunnel_management.secondary,
]
count = var.four_tunnels_redundancy ? 2 : 0
project = data.google_project.gcp_project.project_id
region = var.gcp_vpn_region
name = "oci-secondary-${count.index + 1}"
router = google_compute_router.router.id
peer_external_gateway = google_compute_external_vpn_gateway.external_gateway[count.index].id
peer_external_gateway_interface = 1
vpn_gateway_interface = count.index
ike_version = 2
shared_secret = local.shared_secret
vpn_gateway = google_compute_ha_vpn_gateway.ha_gateway.self_link
}
resource "google_compute_router_interface" "router_interface_primary" {
count = 2
project = data.google_project.gcp_project.project_id
region = var.gcp_vpn_region
name = "oci-primary-${count.index + 1}"
router = google_compute_router.router.name
vpn_tunnel = google_compute_vpn_tunnel.tunnels_primary[count.index].name
}
resource "google_compute_router_interface" "router_interface_secondary" {
count = var.four_tunnels_redundancy ? 2 : 0
project = data.google_project.gcp_project.project_id
region = var.gcp_vpn_region
name = "oci-secondary-${count.index + 1}"
router = google_compute_router.router.name
vpn_tunnel = google_compute_vpn_tunnel.tunnels_secondary[count.index].name
}
resource "google_compute_router_peer" "bgp_peer_primary" {
count = 2
project = data.google_project.gcp_project.project_id
region = var.gcp_vpn_region
name = "oci-primary-${count.index + 1}"
router = google_compute_router.router.name
ip_address = "169.254.2${count.index + 1}.1" #oci_core_ipsec_connection_tunnel_management.primary[count.index].bgp_session_info[0].customer_interface_ip
peer_ip_address = "169.254.2${count.index + 1}.2" #oci_core_ipsec_connection_tunnel_management.primary[count.index].bgp_session_info[0].oracle_interface_ip
peer_asn = oci_core_ipsec_connection_tunnel_management.primary[count.index].bgp_session_info[0].oracle_bgp_asn
interface = google_compute_router_interface.router_interface_primary[count.index].name
}
resource "google_compute_router_peer" "bgp_peer_secondary" {
count = var.four_tunnels_redundancy ? 2 : 0
project = data.google_project.gcp_project.project_id
region = var.gcp_vpn_region
name = "oci-secondary-${count.index + 1}"
router = google_compute_router.router.name
ip_address = "169.254.3${count.index + 1}.1" #oci_core_ipsec_connection_tunnel_management.primary[count.index].bgp_session_info[0].customer_interface_ip
peer_ip_address = "169.254.3${count.index + 1}.2" #oci_core_ipsec_connection_tunnel_management.primary[count.index].bgp_session_info[0].oracle_interface_ip
peer_asn = oci_core_ipsec_connection_tunnel_management.secondary[count.index].bgp_session_info[0].oracle_bgp_asn
interface = google_compute_router_interface.router_interface_secondary[count.index].name
}