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:
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.
For convenience during development or for simple use cases, the module can optionally manage a single instance via the `test_instance` variable. If the instance is not needed the `instance*tf` files can be safely removed. Refer to the [top-level README](../README.md) for more details on the included instance.
## Examples
### Static VPN
The test instance is optional, as described above.
```hcl
module "cloud-vpn" {
source = "./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 = {
ike_version = 2
peer_ip = module.on-prem.external_address
shared_secret = ""
traffic_selectors = { local = ["0.0.0.0/0"], remote = null }
| vpn_config | VPN configuration, type must be one of 'dynamic' or 'static'. | <codetitle="object({ peer_ip = string shared_secret = string type = string peer_ip2 = string shared_secret2 = string })">object({…})</code> | ✓ | |
| config_variables | Additional variables used to render the cloud-config and CoreDNS templates. | <code>map(any)</code> | | <code>{}</code> |
| coredns_config | CoreDNS configuration path, if null default will be used. | <code>string</code> | | <code>null</code> |
| local_ip_cidr_range | IP CIDR range used for the Docker onprem network. | <code>string</code> | | <code>"192.168.192.0/24"</code> |