uis-cloud-computing/7project/tofu/modules/prometheus/main.tf

terraform {
  required_providers {
    kubectl = {
      source  = "gavinbunney/kubectl"
      version = "1.19.0"
    }
    helm = {
      source  = "hashicorp/helm"
      version = "3.0.2"
    }
    kubernetes = {
      source  = "hashicorp/kubernetes"
      version = "2.38.0"
    }
    kustomization = {
      source  = "kbst/kustomization"
      version = "0.9.6"
    }
    time = {
      source  = "hashicorp/time"
      version = "0.13.1"
    }
  }
}

# Create namespace for monitoring
resource "kubernetes_namespace" "monitoring" {
  metadata {
    name = "monitoring"
    labels = {
      "pod-security.kubernetes.io/enforce" = "privileged"
    }
  }
}

# Deploy kube-prometheus-stack
resource "helm_release" "kube_prometheus_stack" {
  name       = "kube-prometheus-stack"
  repository = "https://prometheus-community.github.io/helm-charts"
  chart      = "kube-prometheus-stack"
  namespace  = kubernetes_namespace.monitoring.metadata[0].name
  version    = "67.2.1" # Check for latest version

  # Wait for CRDs to be created
  wait          = true
  timeout       = 600
  force_update  = false
  recreate_pods = false

  # Reference the values file
  values = [
    file("${path.module}/values.yaml")
  ]

  depends_on = [
    kubernetes_namespace.monitoring
  ]
}

resource "kubectl_manifest" "argocd-tunnel-bind" {
  depends_on = [helm_release.kube_prometheus_stack]

  yaml_body = templatefile("${path.module}/grafana-ui.yaml", {
    base_domain = var.cloudflare_domain
  })
}

resource "helm_release" "loki_stack" {
  name       = "loki-stack"
  repository = "https://grafana.github.io/helm-charts"
  chart      = "loki-stack"
  namespace  = kubernetes_namespace.monitoring.metadata[0].name
  version = "2.9.12"

  set = [{
    name  = "grafana.enabled"
    value = "false"
  }]


  depends_on = [
    helm_release.kube_prometheus_stack
  ]
}