Added Instace with Prometheus and Grafana (As a docker), Configured D…

instance.tf

@@ -2,7 +2,7 @@ resource "google_compute_instance" "app" {
   count = var.app_enabled ? 1 : 0
 
   name         = "${var.yourname}-${var.env}-app"
-  machine_type = "n2-highcpu-16" // for memtier/TLS we need a highcpu machine
+  machine_type = "n2-highcpu-32" // for memtier/TLS we need a highcpu machine
   //machine_type = var.machine_type
   zone         = "${var.region_name}-${var.region_zones[0]}"
   tags         = ["ssh", "http"]
@@ -31,6 +31,39 @@ resource "google_compute_instance" "app" {
   }
 }
 
+resource "google_compute_instance" "monitor" {
+  count = var.monitor_enabled ? 1 : 0
+
+  name         = "${var.yourname}-${var.env}-monitor"
+  machine_type = "e2-standard-4" // for memtier/TLS we need a highcpu machine
+  //machine_type = var.machine_type
+  zone         = "${var.region_name}-${var.region_zones[0]}"
+  tags         = ["ssh", "http"]
+  boot_disk {
+    initialize_params {
+      image = "ubuntu-minimal-2204-jammy-v20250311" //"ubuntu-minimal-2004-lts"
+      size = 30 //GB
+    }
+  }
+  labels = {
+    owner = var.yourname
+    skip_deletion = "yes"
+  }
+  metadata = {
+    ssh-keys = "ubuntu:${file("~/.ssh/google_compute_engine.pub")}"
+    startup-script = templatefile("${path.module}/scripts/monitor.sh", {
+      cluster_dns_suffix = "${var.yourname}-${var.env}.${var.dns_zone_dns_name}",
+      RS_CLUSTER_DNS     = "cluster.${var.yourname}-${var.env}.${var.dns_zone_dns_name}"
+    })
+  }
+  network_interface {
+    subnetwork = google_compute_subnetwork.public_subnet.name
+    access_config {
+      // Ephemeral IP
+    }
+  }
+}
+
 resource "google_compute_instance" "node1" {
   name         = "${var.yourname}-${var.env}-1"
   machine_type = var.machine_type
@@ -134,6 +167,18 @@ resource "google_dns_record_set" "app" {
 
   rrdatas = [google_compute_instance.app.0.network_interface.0.access_config.0.nat_ip]
 }
+
+resource "google_dns_record_set" "monitor" {
+  count = var.monitor_enabled ? 1 : 0
+
+  name = "monitor.${var.yourname}-${var.env}.${var.dns_zone_dns_name}."
+  type = "A"
+  ttl  = 300
+  managed_zone = var.dns_managed_zone
+
+  rrdatas = [google_compute_instance.monitor.0.network_interface.0.access_config.0.nat_ip]
+}
+
 resource "google_dns_record_set" "node1" {
   name = "node1.${var.yourname}-${var.env}.${var.dns_zone_dns_name}."
   type = "A"

main.tf

@@ -7,6 +7,17 @@ output "rs_ui_dns" {
 	value = ["https://node1.${var.yourname}-${var.env}.${var.dns_zone_dns_name}:8443",
           "https://cluster.${var.yourname}-${var.env}.${var.dns_zone_dns_name}:8443"]
 }
+
+output "monitor_grafana" {
+	value = ["http://monitor.${var.yourname}-${var.env}.${var.dns_zone_dns_name}:3000",
+    "user = admin , password = secret", "monitor IP:${google_compute_instance.monitor.0.network_interface.0.access_config.0.nat_ip}"]
+}
+
+output "monitor_prometheus" {
+	value = ["http://monitor.${var.yourname}-${var.env}.${var.dns_zone_dns_name}:9090",
+   "monitor IP:${google_compute_instance.monitor.0.network_interface.0.access_config.0.nat_ip}"]
+}
+
 output "rs_ui_ip" {
 	value = "https://${google_compute_instance.node1.network_interface.0.access_config.0.nat_ip}:8443"
 }

scripts/monitor.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+
+set -e
+
+echo "Fetching Redis Enterprise DNS from Terraform outputs..."
+
+echo "Installing Docker and Docker Compose..."
+sudo apt-get update
+sudo apt-get install -y docker.io docker-compose
+sudo systemctl start docker
+sudo systemctl enable docker
+
+echo "Creating Prometheus configuration directory..."
+mkdir prometheus
+
+echo "Creating prometheus.yml with cluster DNS: $RS_CLUSTER_DNS"
+
+cat > prometheus/prometheus.yml <<EOF
+global:
+  scrape_interval: 15s
+  evaluation_interval: 15s
+
+  external_labels:
+    monitor: "prometheus-stack-monitor"
+
+scrape_configs:
+  - job_name: prometheus
+    scrape_interval: 10s
+    scrape_timeout: 5s
+    static_configs:
+      - targets: ["localhost:9090"]
+
+  - job_name: redis-enterprise
+    scrape_interval: 30s
+    scrape_timeout: 30s
+    metrics_path: /
+    scheme: https
+    tls_config:
+      insecure_skip_verify: true
+    static_configs:
+      - targets: ["${RS_CLUSTER_DNS}:8070"]
+EOF
+
+echo "Creating docker-compose.yml..."
+cat > docker-compose.yml <<EOF
+version: '3'
+
+services:
+  prometheus-server:
+    image: prom/prometheus
+    ports:
+      - "9090:9090"
+    volumes:
+      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+
+
+  grafana-ui:
+      image: grafana/grafana
+      ports:
+          - 3000:3000
+      environment:
+         - GF_SECURITY_ADMIN_PASSWORD=secret
+      links:
+         - prometheus-server:prometheus
+EOF
+
+echo "Starting Prometheus and Grafana using Docker Compose..."
+sudo docker-compose up -d
+
+echo "Done!"
+echo "Prometheus: http://<YOUR_VM_PUBLIC_IP>:9090"
+echo "Grafana: http://<YOUR_VM_PUBLIC_IP>:3000 (login: admin / admin)"
+echo "Metrics are scraped from: https://${RS_CLUSTER_DNS}:8070"

variable.tf

@@ -67,6 +67,10 @@ variable "app_enabled" {
   default = false
 }
 
+variable "monitor_enabled" {
+  default = false
+}
+
 // other possible edits ************************************* Kubernetes KGE
 // GKE K8s is optional
 variable "gke_enabled" {