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# Google Simple NVA Module
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This module allows for the creation of a NVA (Network Virtual Appliance) to be used for experiments and as a stub for future appliances deployment.
This NVA can be used to interconnect up to 8 VPCs.
## Examples
### Simple example
```hcl
locals {
network_interfaces = [
{
addresses = null
name = "dev"
nat = false
network = "dev_vpc_self_link"
routes = ["10.128.0.0/9"]
subnetwork = "dev_vpc_nva_subnet_self_link"
},
{
addresses = null
name = "prod"
nat = false
network = "prod_vpc_self_link"
routes = ["10.0.0.0/9"]
subnetwork = "prod_vpc_nva_subnet_self_link"
}
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]
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}
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module "cos-nva" {
source = "./fabric/modules/cloud-config-container/simple-nva"
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enable_health_checks = true
network_interfaces = local.network_interfaces
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# files = {
# "/var/lib/cloud/scripts/per-boot/firewall-rules.sh" = {
# content = file("./your_path/to/firewall-rules.sh")
# owner = "root"
# permissions = 0700
# }
# }
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}
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module "vm" {
source = "./fabric/modules/compute-vm"
project_id = "my-project"
zone = "europe-west8-b"
name = "cos-nva"
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network_interfaces = local.network_interfaces
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metadata = {
user-data = module.cos-nva.cloud_config
google-logging-enabled = true
}
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boot_disk = {
image = "projects/cos-cloud/global/images/family/cos-stable"
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type = "pd-ssd"
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size = 10
}
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tags = ["nva", "ssh"]
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}
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# tftest modules=1 resources=1
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```
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## Variables
| name | description | type | required | default |
|---|---|:---:|:---:|:---:|
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| [network_interfaces ](variables.tf#L39 ) | Network interfaces configuration. | < code title = "list(object({ routes = optional(list(string)) }))" > list( object({…})) </ code > | ✓ | |
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| [cloud_config ](variables.tf#L17 ) | Cloud config template path. If null default will be used. | < code > string</ code > | | < code > null</ code > |
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| [enable_health_checks ](variables.tf#L23 ) | Configures routing to enable responses to health check probes. | < code > bool</ code > | | < code > false</ code > |
| [files ](variables.tf#L29 ) | Map of extra files to create on the instance, path as key. Owner and permissions will use defaults if null. | < code title = "map(object({ content = string owner = string permissions = string }))" > map( object({…})) </ code > | | < code > {} </ code > |
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## Outputs
| name | description | sensitive |
|---|---|:---:|
| [cloud_config ](outputs.tf#L17 ) | Rendered cloud-config file to be passed as user-data instance metadata. | |
<!-- END TFDOC -->