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Extended simple-nva module to manage BGP service running on FR routing docker container (#1195)

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simonebruzzechesse
2023-03-08 09:43:13 +01:00
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modules/cloud-config-container/simple-nva/README.md
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@@ -62,16 +62,88 @@ module "vm" {
}
# tftest modules=1 resources=1
```
### Example with advanced routing capabilities
Find below a sample terraform example for bootstrapping a simple NVA powered by [COS](https://cloud.google.com/container-optimized-os/docs) and running [FRRouting](https://frrouting.org/) container.
Please find below a sample frr.conf file based on the documentation available [here](https://docs.frrouting.org/en/latest/basic.html) for hosting a BGP service with ASN 65001 on FRR container establishing a BGP session with a remote neighbor with IP address 10.128.0.2 and ASN 65002.
```
# tftest-file id=frr_conf path=./frr.conf
# Example frr.conmf file
log syslog informational
no ipv6 forwarding
router bgp 65001
neighbor 10.128.0.2 remote-as 65002
line vty
```
Following code assumes a file in the same folder named frr.conf exists.
```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"
enable_masquerading = true
non_masq_cidrs = ["10.0.0.0/8"]
},
{
addresses = null
name = "prod"
nat = false
network = "prod_vpc_self_link"
routes = ["10.0.0.0/9"]
subnetwork = "prod_vpc_nva_subnet_self_link"
}
]
}
module "cos-nva" {
source = "./fabric/modules/cloud-config-container/simple-nva"
enable_health_checks = true
network_interfaces = local.network_interfaces
frr_config = { config_file = "./frr.conf", daemons_enabled = ["bgpd"] }
optional_run_cmds = ["ls -l"]
}
module "vm" {
source = "./fabric/modules/compute-vm"
project_id = "my-project"
zone = "europe-west8-b"
name = "cos-nva"
network_interfaces = local.network_interfaces
metadata = {
user-data = module.cos-nva.cloud_config
google-logging-enabled = true
}
boot_disk = {
image = "projects/cos-cloud/global/images/family/cos-stable"
type = "pd-ssd"
size = 10
}
tags = ["nva", "ssh"]
}
# tftest modules=1 resources=1 files=frr_conf
```
<!-- BEGIN TFDOC -->
## Variables
| name | description | type | required | default |
|---|---|:---:|:---:|:---:|
| [network_interfaces](variables.tf#L39) | Network interfaces configuration. | <code title="list&#40;object&#40;&#123;&#10; routes &#61; optional&#40;list&#40;string&#41;&#41;&#10;&#125;&#41;&#41;">list&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> | ✓ | |
| [network_interfaces](variables.tf#L75) | Network interfaces configuration. | <code title="list&#40;object&#40;&#123;&#10; routes &#61; optional&#40;list&#40;string&#41;&#41;&#10; enable_masquerading &#61; optional&#40;bool, false&#41;&#10; non_masq_cidrs &#61; optional&#40;list&#40;string&#41;&#41;&#10;&#125;&#41;&#41;">list&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> | ✓ | |
| [cloud_config](variables.tf#L17) | Cloud config template path. If null default will be used. | <code>string</code> | | <code>null</code> |
| [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&#40;object&#40;&#123;&#10; content &#61; string&#10; owner &#61; string&#10; permissions &#61; string&#10;&#125;&#41;&#41;">map&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> | | <code>&#123;&#125;</code> |
| [frr_config](variables.tf#L39) | FRR configuration for container running on the NVA. | <code title="object&#40;&#123;&#10; daemons_enabled &#61; optional&#40;list&#40;string&#41;&#41;&#10; config_file &#61; string&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code>null</code> |
| [optional_run_cmds](variables.tf#L84) | Optional Cloud Init run commands to execute. | <code>list&#40;string&#41;</code> | | <code>&#91;&#93;</code> |
## Outputs