my-app-sandbox/main.tf

variable "app_version" {
  type    = string
  default = "latest"
}

terraform {
  required_providers {
    kubernetes = {
      source  = "hashicorp/kubernetes"
      version = "~> 2.26"
    }
    helm = {
      source  = "hashicorp/helm"
      version = "~> 2.12"
    }
  }
}

provider "kubernetes" {
  config_path = "./kind_kubeconfig"
  host        = "https://local-k3s-platform:6443"
  # ERZWINGT DEN DURCHBRUCH: Ignoriert den Hostnamen-Zertifikatskonflikt
  insecure    = true
}

provider "helm" {
  kubernetes {
    config_path = "./kind_kubeconfig"
    host        = "https://local-k3s-platform:6443"
    # Auch für Helm die Zertifikatsprüfung für den Container-Namen abschalten
    insecure    = true
  }
}

resource "helm_release" "nginx_ingress" {
  name       = "ingress-nginx"
  repository = "https://kubernetes.github.io/ingress-nginx"
  chart      = "ingress-nginx"
  namespace  = "kube-system"
  set {
    name  = "controller.service.type"
    value = "ClusterIP"
  }
  set {
    name  = "controller.hostNetwork"
    value = "true"
  }
}

resource "kubernetes_deployment" "webapp" {
  metadata {
    name = "webapp"
    labels = { app = "webapp" }
  }
  spec {
    replicas = 1
    selector { match_labels = { app = "webapp" } }
    template {
      metadata { labels = { app = "webapp" } }
      spec {
        container {
          name  = "web"
          image = "nginx/${github.repository}:latest"
          port { container_port = 80 }
        }
      }
    }
  }
}

resource "kubernetes_service" "webapp_service" {
  metadata { name = "webapp-service" }
  spec {
    selector = { app = "webapp" }
    port {
      port        = 80
      target_port = 80
    }
  }
}

resource "kubernetes_ingress_v1" "app_ingress" {
  depends_on = [helm_release.nginx_ingress]
  metadata {
    name = "app-ingress"
    annotations = {
      "kubernetes.io/ingress.class" = "nginx"
    }
  }
  spec {
    rule {
      http {
        path {
          path      = "/"
          path_type = "Prefix"
          backend {
            service {
              name = kubernetes_service.webapp_service.metadata[0].name
              port { number = 80 }
            }
          }
        }
      }
    }
  }
}