cloud-foundation-fabric/modules/cloud-config-container/__need_fixing/onprem

Containerized on-premises infrastructure

This module manages a cloud-config configuration that starts an emulated on-premises infrastructure running in Docker Compose on a single instance, and connects it via static or dynamic VPN to a Google Cloud VPN gateway.

The emulated on-premises infrastructure is composed of:

• a Strongswan container managing the VPN tunnel to GCP
• an optional Bird container managing the BGP session
• a CoreDNS container servng local DNS and forwarding to GCP
• an Nginx container serving a simple static web page
• a generic Linux container used as a jump host inside the on-premises network

A complete scenario using this module is available in the networking blueprints.

The module renders the generated cloud config in the cloud_config output, to be used in instances or instance templates via the user-data metadata.

Examples

Static VPN

module "cloud-vpn" {
  source        = "./fabric/modules/net-vpn-static"
  project_id    = "my-project"
  region        = "europe-west1"
  network       = "my-vpc"
  name          = "to-on-prem"
  remote_ranges = ["192.168.192.0/24"]
  tunnels = {
    remote-0 = {
      peer_ip           = module.vm.external_ip
      traffic_selectors = { local = ["0.0.0.0/0"], remote = null }
    }
  }
}

module "on-prem" {
  source = "./fabric/modules/cloud-config-container/onprem"
  vpn_config = {
    type          = "static"
    peer_ip       = module.cloud-vpn.address
    shared_secret = module.cloud-vpn.random_secret
  }
}

module "vm" {
  source     = "./fabric/modules/compute-vm"
  project_id = "my-project"
  zone       = "europe-west8-b"
  name       = "cos-nginx-tls"
  network_interfaces = [{
    nat        = true
    network    = "default"
    subnetwork = "gce"
  }]
  metadata = {
    user-data              = module.on-prem.cloud_config
    google-logging-enabled = true
  }
  boot_disk = {
    initialize_params = {
      image = "projects/cos-cloud/global/images/family/cos-stable"
      type  = "pd-ssd"
      size  = 10
    }
  }
  tags = ["ssh"]
}
# tftest skip

Variables

name	description	type	required	default
vpn_config	VPN configuration, type must be one of 'dynamic' or 'static'.	object({…})	✓
config_variables	Additional variables used to render the cloud-config and CoreDNS templates.	map(any)		{}
coredns_config	CoreDNS configuration path, if null default will be used.	string		null
local_ip_cidr_range	IP CIDR range used for the Docker onprem network.	string		"192.168.192.0/24"
vpn_dynamic_config	BGP configuration for dynamic VPN, ignored if VPN type is 'static'.	object({…})		{…}
vpn_static_ranges	Remote CIDR ranges for static VPN, ignored if VPN type is 'dynamic'.	list(string)		["10.0.0.0/8"]

Outputs

name	description	sensitive
cloud_config	Rendered cloud-config file to be passed as user-data instance metadata.