feat: Support setting a static ip for the bastion (#197)

Author: marcusramberg

README.md

@@ -91,6 +91,7 @@ If the user does not share the same domain as the org the bastion is in, you wil
 | name | Name of the Bastion instance | `string` | `"bastion-vm"` | no |
 | name\_prefix | Name prefix for instance template | `string` | `"bastion-instance-template"` | no |
 | network | Self link for the network on which the Bastion should live | `string` | n/a | yes |
+| network\_ip | Private IP address for the bastion host | `string` | `""` | no |
 | preemptible | Allow the instance to be preempted | `bool` | `false` | no |
 | project | The project ID to deploy to | `string` | n/a | yes |
 | random\_role\_id | Enables role random id generation. | `bool` | `true` | no |

main.tf

@@ -91,6 +91,7 @@ resource "google_compute_instance_from_template" "bastion_vm" {
     subnetwork         = var.subnet
     subnetwork_project = var.host_project != "" ? var.host_project : var.project
     access_config      = var.external_ip ? var.access_config : []
+    network_ip         = var.network_ip
   }
 
   source_instance_template = module.instance_template.self_link

variables.tf

@@ -88,6 +88,12 @@ variable "network" {
   description = "Self link for the network on which the Bastion should live"
 }
 
+variable "network_ip" {
+  type        = string
+  description = "Private IP address for the bastion host"
+  default     = ""
+}
+
 variable "project" {
   type = string
 
@@ -281,4 +287,3 @@ variable "can_ip_forward" {
   description = "Whether the bastion should allow IP forwarding."
   default     = false
 }
-