helm.tf

# helm.tf
# Helm provider 설정 및 helm_release 리소스 정의

provider "helm" {
  kubernetes {
    config_path = "~/.kube/config"
  }
}

# Prometheus Stack Helm Release
resource "helm_release" "prometheus" {
  name             = "prometheus"
  repository       = "https://prometheus-community.github.io/helm-charts"
  chart            = "kube-prometheus-stack"
  namespace        = "monitoring"
  create_namespace = true

  set {
    name  = "grafana.adminPassword"
    value = "admin123"
  }

  # Grafana 서비스 타입 설정 (선택사항)
  set {
    name  = "grafana.service.type"
    value = "ClusterIP"
  }

  # Prometheus 리소스 제한 설정 (선택사항)
  set {
    name  = "prometheus.prometheusSpec.resources.requests.memory"
    value = "512Mi"
  }

  set {
    name  = "prometheus.prometheusSpec.resources.limits.memory"
    value = "2Gi"
  }
}

# FastAPI Helm Release (기존 my-fastapi-chart 사용)
resource "helm_release" "fastapi" {
  name             = "my-fastapi-terraform"
  chart            = "../helm-charts/my-fastapi-chart"
  namespace        = "apps"
  create_namespace = true

  # values.yaml 오버라이드
  set {
    name  = "replicaCount"
    value = "3"
  }

  set {
    name  = "image.tag"
    value = "python3.11-slim"
  }

  set {
    name  = "config.greeting"
    value = "Hello from Terraform Helm!"
  }

  set {
    name  = "config.environment"
    value = "terraform"
  }

  # 리소스 설정
  set {
    name  = "resources.requests.cpu"
    value = "100m"
  }

  set {
    name  = "resources.requests.memory"
    value = "256Mi"
  }

  set {
    name  = "resources.limits.cpu"
    value = "500m"
  }

  set {
    name  = "resources.limits.memory"
    value = "512Mi"
  }

  # Ingress 설정
  set {
    name  = "ingress.enabled"
    value = "true"
  }

  set {
    name  = "ingress.host"
    value = "fastapi-terraform.local"
  }

  # HPA 활성화 (선택사항)
  set {
    name  = "autoscaling.enabled"
    value = "false"
  }

  depends_on = [helm_release.prometheus]
}

# ============================================
# Local Chart 예시: Day 3의 my-fastapi-chart 활용
# ============================================

# Local Chart - 간단한 버전 (Ingress 없이)
resource "helm_release" "fastapi_local" {
  name             = "fastapi-app"
  chart            = "../helm-charts/my-fastapi-chart"
  namespace        = "apps"
  create_namespace = true

  set {
    name  = "replicaCount"
    value = "2"
  }

  set {
    name  = "ingress.enabled"
    value = "false"
  }

  set {
    name  = "config.greeting"
    value = "Hello from Local Chart!"
  }

  set {
    name  = "config.environment"
    value = "local-chart"
  }

  # 리소스 제한
  set {
    name  = "resources.requests.cpu"
    value = "100m"
  }

  set {
    name  = "resources.requests.memory"
    value = "128Mi"
  }

  set {
    name  = "resources.limits.cpu"
    value = "200m"
  }

  set {
    name  = "resources.limits.memory"
    value = "256Mi"
  }
}

# Output으로 배포된 정보 확인
output "prometheus_status" {
  value = {
    name      = helm_release.prometheus.name
    namespace = helm_release.prometheus.namespace
    chart     = helm_release.prometheus.chart
    version   = helm_release.prometheus.version
  }
  description = "Prometheus Helm Release 정보"
}

output "fastapi_status" {
  value = {
    name      = helm_release.fastapi.name
    namespace = helm_release.fastapi.namespace
    chart     = helm_release.fastapi.chart
  }
  description = "FastAPI Helm Release 정보"
}

output "fastapi_local_status" {
  value = {
    name      = helm_release.fastapi_local.name
    namespace = helm_release.fastapi_local.namespace
    chart     = helm_release.fastapi_local.chart
  }
  description = "FastAPI Local Chart Release 정보"
}