removing unused variable, assuming existing VPC is already peered

Author: slorello89

grafana_v2/kickstart_v2/terraform/gcp/README.md

@@ -5,7 +5,7 @@ The Redis Cloud Grafana Kickstarter automates the deployment of a complete obser
 ## What This Kickstarter Does
 
 - **Network Infrastructure**: Creates a new VPC and subnet in GCP (or uses existing ones if provided)
-- **VPC Peering**: Establishes secure peering between your GCP VPC and Redis Cloud Pro subscription
+- **VPC Peering**: Establishes secure peering between your GCP VPC and Redis Cloud Pro subscription (If you bring your own VCP it's assumed it's already peered)
 - **Monitoring Stack**: Deploys a VM with Prometheus and Grafana pre-configured for Redis monitoring
 - **Dashboard Integration**: Automatically installs Redis Cloud dashboards from this repository
 - **SSL & Domain Setup**: Configures nginx reverse proxy with Let's Encrypt SSL certificates

grafana_v2/kickstart_v2/terraform/gcp/main.tf

@@ -121,16 +121,18 @@ resource "google_compute_firewall" "redispeer_allow_egress" {
 
 
 resource "rediscloud_subscription_peering" "redispeer-sub-vpc-peering" {
+    count   = var.existing_vpc_id == null ? 1 : 0
     subscription_id = var.subscription_id
     provider_name="GCP"
     gcp_project_id = var.gcp_project
     gcp_network_name = local.vpc_name
 }
 
 resource "google_compute_network_peering" "redispeer-gcp-vpc-peering" {
+    count   = var.existing_vpc_id == null ? 1 : 0
     name = "redispeer-gcp-vpc-peering"
     network = local.vpc_id
-    peer_network = "https://www.googleapis.com/compute/v1/projects/${rediscloud_subscription_peering.redispeer-sub-vpc-peering.gcp_redis_project_id}/global/networks/${rediscloud_subscription_peering.redispeer-sub-vpc-peering.gcp_redis_network_name}"
+    peer_network = "https://www.googleapis.com/compute/v1/projects/${rediscloud_subscription_peering.redispeer-sub-vpc-peering[0].gcp_redis_project_id}/global/networks/${rediscloud_subscription_peering.redispeer-sub-vpc-peering[0].gcp_redis_network_name}"
 }
 
 resource "google_compute_instance" "redispeerr-vm"{

grafana_v2/kickstart_v2/terraform/gcp/variables.tf

@@ -28,11 +28,6 @@ variable "redis_cloud_api_key" {
   description = "The Redis Cloud API key"
 }
 
-variable "sub_name" {
-    type      = string
-    description = "The name of the subscription"
-}
-
 variable "db_name" {
     type      = string
     description = "The name of the database"