Kubernetes Node Pool Management and Cloud-Specific Scaling Patterns

# GKE Node Pool
resource "google_container_node_pool" "general_purpose" {
  name       = "general-purpose"
  cluster    = google_container_cluster.primary.name
  location   = "us-central1"
  
  autoscaling {
    min_node_count = 1
    max_node_count = 10
    location_policy = "BALANCED"
  }
  
  node_config {
    machine_type = "n2-standard-4"
    disk_size_gb = 100
    disk_type    = "pd-ssd"
    
    labels = {
      role = "general"
      env  = "production"
    }
    
    taint {
      key    = "specialty"
      value  = "gpu"
      effect = "NO_SCHEDULE"
    }
  }
  
  management {
    auto_repair  = true
    auto_upgrade = true
  }
}

# EKS Node Group
resource "aws_eks_node_group" "compute_optimized" {
  cluster_name    = aws_eks_cluster.main.name
  node_group_name = "compute-optimized"
  node_role_arn   = aws_iam_role.eks_node.arn
  subnet_ids      = aws_subnet.private[*].id
  
  scaling_config {
    desired_size = 2
    max_size     = 10
    min_size     = 1
  }
  
  instance_types = ["c5.2xlarge"]
  capacity_type  = "SPOT"
  
  labels = {
    workload = "compute"
    cost     = "spot"
  }
  
  taint {
    key    = "workload"
    value  = "compute"
    effect = "NO_SCHEDULE"
  }
}

# AKS Node Pool
resource "azurerm_kubernetes_cluster_node_pool" "memory_optimized" {
  name                  = "memopt"
  kubernetes_cluster_id = azurerm_kubernetes_cluster.main.id
  vm_size              = "Standard_E4s_v3"
  
  enable_auto_scaling = true
  min_count          = 1
  max_count          = 5
  
  node_labels = {
    workload = "memory-intensive"
  }
  
  node_taints = [
    "workload=memory:NoSchedule"
  ]
  
  zones = [1, 2, 3]
}

# GKE-specific features
resource "google_container_cluster" "advanced" {
  # Autopilot mode
  enable_autopilot = true
  
  # Vertical Pod Autoscaling
  vertical_pod_autoscaling {
    enabled = true
  }
  
  # Binary Authorization
  enable_binary_authorization = true
  
  # Workload Identity
  workload_identity_config {
    workload_pool = "${project_id}.svc.id.goog"
  }
}

# EKS-specific features
resource "aws_eks_cluster" "advanced" {
  # Fargate Profiles
  fargate_profile {
    name = "serverless"
    selectors {
      namespace = "serverless"
    }
  }
  
  # IPv6 Support
  kubernetes_network_config {
    ip_family = "ipv6"
  }
  
  # Secrets Encryption
  encryption_config {
    provider {
      key_arn = aws_kms_key.eks.arn
    }
    resources = ["secrets"]
  }
}

# AKS-specific features
resource "azurerm_kubernetes_cluster" "advanced" {
  # Azure CNI Overlay
  network_profile {
    network_plugin = "azure"
    network_policy = "calico"
    network_mode   = "overlay"
  }
  
  # Azure AD Integration
  azure_active_directory_role_based_access_control {
    managed = true
    azure_rbac_enabled = true
  }
  
  # Azure Key Vault Integration
  key_vault_secrets_provider {
    secret_rotation_enabled = true
  }
}