fix: corrigir tipos de servidor AMD (CPX→CX), autoscaler, stdin e cleanup

- Corrigir tipos Hetzner: CPX não existe, usar CX (Intel shared vCPU)
  - CX23 (2 vCPU, 4GB) equivalente ao CAX11
  - CX33 (4 vCPU, 8GB) equivalente ao CAX21
  - CX43 (8 vCPU, 16GB) equivalente ao CAX31
- Corrigir location no autoscaler para amd64 (nbg1→fsn1)
- Remover gitlab-pool do autoscaler (substituído pelo Gitea)
- Aumentar worker-pool max para 30
- Corrigir Floating IP e Load Balancer hardcoded em nbg1
- Corrigir stdin em read interativo: usar < /dev/tty e read -p
- Corrigir cleanup de namespace: lidar com Terminating e finalizers
- Corrigir CNPG: nome do deployment, secret e endpointURL duplo
- Aulas afetadas: 08, 09, 10, 11, 12, 14, 17

aula-08/cleanup.sh

@@ -47,7 +47,7 @@ if [ -f "kubeconfig" ]; then
     # Detectar arch dos nodes para filtrar instance type correto
     NODE_ARCH=$(kubectl get nodes -o jsonpath='{.items[0].metadata.labels.kubernetes\.io/arch}' 2>/dev/null || echo "arm64")
     if [[ "$NODE_ARCH" == "amd64" ]]; then
-        INSTANCE_PATTERN="cpx"
+        INSTANCE_PATTERN="cx"
     else
         INSTANCE_PATTERN="cax"
     fi

aula-08/cluster-autoscaler.yaml

@@ -128,10 +128,7 @@ spec:
             # POOLS DE NODES:
             #
             # worker-pool: Workloads gerais (CAX21 = 4 vCPU, 8GB)
-            - --nodes=1:3:CAX21:nbg1:worker-pool
+            - --nodes=1:30:CAX21:nbg1:worker-pool
-            #
-            # gitlab-pool: Gitea e serviços pesados (CAX21)
-            - --nodes=1:2:CAX21:nbg1:gitlab-pool
             #
             # build-pool: Builds Docker (CAX31 = 8 vCPU, 16GB)
             # Escala 0-1 sob demanda, taint "dedicated=builds:NoSchedule"

aula-08/main.tf

@@ -38,14 +38,14 @@ locals {
   # Endpoint: LoadBalancer IP if enabled, otherwise Floating IP
   cluster_endpoint_ip = var.enable_loadbalancer ? hcloud_load_balancer.cluster[0].ipv4 : hcloud_floating_ip.control_plane[0].ip_address
 
-  # Arquitetura: mapeia arm64→CAX (Nuremberg) ou amd64→CPX (Frankfurt)
+  # Arquitetura: mapeia arm64→CAX (Nuremberg) ou amd64→CX (Frankfurt)
   arch_config = {
     arm64 = {
       server_type_cp = "cax11"
       location       = "nbg1"
     }
     amd64 = {
-      server_type_cp = "cpx21"
+      server_type_cp = "cx23"
       location       = "fsn1"
     }
   }
@@ -247,7 +247,7 @@ resource "hcloud_floating_ip" "control_plane" {
   count         = var.enable_loadbalancer ? 0 : 1
   type          = "ipv4"
   name          = "${local.cluster_name}-cp-ip"
-  home_location = "nbg1"
+  home_location = local.selected_arch.location
   labels        = local.common_labels
 }
 
@@ -265,7 +265,7 @@ resource "hcloud_load_balancer" "cluster" {
   count              = var.enable_loadbalancer ? 1 : 0
   name               = "${local.cluster_name}-lb"
   load_balancer_type = "lb11"
-  location           = "nbg1"
+  location           = local.selected_arch.location
   labels             = local.common_labels
 }
 

aula-08/setup.sh

@@ -240,13 +240,13 @@ if [ "$SKIP_CREDENTIALS" != "true" ]; then
     echo "6. Arquitetura dos nodes"
     echo ""
     echo "   arm64 (CAX) - Ampere Altra, melhor custo/benefício"
-    echo "   amd64 (CPX) - AMD EPYC, mais disponível"
+    echo "   amd64 (CX) - Intel, mais disponível"
     echo ""
     read -p "   Arquitetura? (arm64/amd64) [arm64]: " arch_input
     ARCH="${arch_input:-arm64}"
 
     if [[ "$ARCH" == "amd64" ]]; then
-        log_success "AMD64 selecionado (CPX em fsn1)"
+        log_success "AMD64 selecionado (CX em fsn1)"
     else
         log_success "ARM64 selecionado (CAX em nbg1)"
         ARCH="arm64"
@@ -317,8 +317,8 @@ ENABLE_LB_CONFIG=$(grep 'enable_loadbalancer' terraform.tfvars 2>/dev/null | gre
 # Custos estimados baseado na arquitetura selecionada
 ARCH_CONFIG=$(grep 'arch' terraform.tfvars 2>/dev/null | grep -o 'arm64\|amd64' || echo "arm64")
 if [[ "$ARCH_CONFIG" == "amd64" ]]; then
-    NODE_TYPE="CPX21"
+    NODE_TYPE="CX23"
-    NODE_COST="\$6.99"
+    NODE_COST="\$4.99"
 else
     NODE_TYPE="CAX11"
     NODE_COST="\$4.59"
@@ -575,13 +575,13 @@ log_info "Aplicando manifesto do cluster-autoscaler..."
 # Ajustar server_types do autoscaler conforme arquitetura
 if [[ "$ARCH" == "amd64" ]]; then
     AUTOSCALER_FILE="${SCRIPT_DIR}/cluster-autoscaler.yaml"
-    # CPX equivalentes: CAX21→CPX31, CAX31→CPX41, CAX11→CPX21
+    # CX equivalentes: CAX21→CX33, CAX31→CX43, CAX11→CX23
     cat "$AUTOSCALER_FILE" | \
         sed "s|\${TALOS_IMAGE_ID}|$TALOS_IMAGE_ID|g" | \
         sed "s|\${NETWORK_NAME}|$CLUSTER_NAME-network|g" | \
         sed "s|\${FIREWALL_NAME}|$CLUSTER_NAME-firewall|g" | \
         sed "s|\${SSH_KEY_NAME}|$SSH_KEY_NAME|g" | \
-        sed -e 's/CAX21/CPX31/g' -e 's/CAX31/CPX41/g' -e 's/CAX11/CPX21/g' | \
+        sed -e 's/CAX21/CX33/g' -e 's/CAX31/CX43/g' -e 's/CAX11/CX23/g' -e 's/:nbg1:/:fsn1:/g' | \
         kubectl apply -f -
 else
     cat cluster-autoscaler.yaml | \

aula-08/terraform.tfvars.example

@@ -24,9 +24,9 @@ talos_image_id = 123456789
 # Ambiente (prod, staging, dev)
 environment = "workshop"
 
-# Arquitetura dos nodes: arm64 (CAX) ou amd64 (CPX)
+# Arquitetura dos nodes: arm64 (CAX) ou amd64 (CX)
 # arm64 = CAX11/21/31 em Nuremberg (nbg1) - melhor custo
-# amd64 = CPX21/31/41 em Frankfurt (fsn1) - mais disponível
+# amd64 = CX23/33/43 em Frankfurt (fsn1) - mais disponível
 # arch = "arm64"
 
 # Versão do Talos OS (opcional - default: v1.11.2)

aula-08/variables.tf

@@ -74,7 +74,7 @@ variable "talos_version" {
 
 variable "arch" {
   type        = string
-  description = "Arquitetura dos nodes: arm64 (CAX - Ampere Altra, melhor custo) ou amd64 (CPX - AMD EPYC, mais disponível)"
+  description = "Arquitetura dos nodes: arm64 (CAX - Ampere Altra, melhor custo) ou amd64 (CX - Intel, mais disponível)"
   default     = "arm64"
 
   validation {

aula-09/setup.sh

@@ -99,8 +99,7 @@ collect_user_input() {
         echo -e "Deseja usar esta configuração?"
         echo -e "  1) Sim, continuar com a configuração existente"
         echo -e "  2) Não, reconfigurar"
-        echo -n "Escolha [1/2]: "
+        read -r -p "Escolha [1/2]: " choice < /dev/tty
-        read -r choice
         if [[ "$choice" == "1" ]]; then
             return 0
         fi
@@ -108,8 +107,7 @@ collect_user_input() {
 
     # Coletar hostname completo
     echo ""
-    echo -n "Digite o hostname do n8n (ex: n8n.kube.quest): "
+    read -r -p "Digite o hostname do n8n (ex: n8n.kube.quest): " N8N_HOST < /dev/tty
-    read -r N8N_HOST
 
     if [[ -z "$N8N_HOST" ]]; then
         log_error "Hostname não pode ser vazio"
@@ -124,8 +122,7 @@ collect_user_input() {
     echo "Você usa CloudFlare para DNS?"
     echo "  1) Sim (com proxy/CDN ativado - ícone laranja)"
     echo "  2) Não"
-    echo -n "Escolha [1/2]: "
+    read -r -p "Escolha [1/2]: " choice < /dev/tty
-    read -r choice
 
     if [[ "$choice" == "1" ]]; then
         USE_CLOUDFLARE=true
@@ -139,14 +136,12 @@ collect_user_input() {
         echo "Deseja ativar HTTPS com Let's Encrypt?"
         echo "  1) Sim (recomendado para produção)"
         echo "  2) Não (apenas HTTP)"
-        echo -n "Escolha [1/2]: "
+        read -r -p "Escolha [1/2]: " choice < /dev/tty
-        read -r choice
 
         if [[ "$choice" == "1" ]]; then
             USE_LETSENCRYPT=true
             echo ""
-            echo -n "Digite seu email para Let's Encrypt: "
+            read -r -p "Digite seu email para Let's Encrypt: " LETSENCRYPT_EMAIL < /dev/tty
-            read -r LETSENCRYPT_EMAIL
 
             if [[ -z "$LETSENCRYPT_EMAIL" ]]; then
                 log_error "Email é obrigatório para Let's Encrypt"
@@ -349,8 +344,7 @@ if [[ "$USE_LETSENCRYPT" == "true" ]]; then
     echo -e "${YELLOW}  O Let's Encrypt precisa do DNS configurado para emitir o certificado.${NC}"
 fi
 echo ""
-echo -n "Pressione ENTER quando o DNS estiver configurado..."
+read -p "Pressione ENTER quando o DNS estiver configurado..." -r
-read -r
 
 echo ""
 

aula-10/setup.sh

@@ -105,8 +105,7 @@ collect_user_input() {
         echo -e "Deseja usar esta configuração?"
         echo -e "  1) Sim, continuar com a configuração existente"
         echo -e "  2) Não, reconfigurar"
-        echo -n "Escolha [1/2]: "
+        read -r -p "Escolha [1/2]: " choice < /dev/tty
-        read -r choice
         if [[ "$choice" == "1" ]]; then
             return 0
         fi
@@ -114,8 +113,7 @@ collect_user_input() {
 
     # Coletar hostname
     echo ""
-    echo -n "Digite o hostname do Gitea (ex: git.kube.quest): "
+    read -r -p "Digite o hostname do Gitea (ex: git.kube.quest): " GITEA_HOST < /dev/tty
-    read -r GITEA_HOST
 
     if [[ -z "$GITEA_HOST" ]]; then
         log_error "Hostname não pode ser vazio"
@@ -134,8 +132,7 @@ collect_user_input() {
         echo -e "Deseja usar esta configuração de TLS?"
         echo -e "  1) Sim"
         echo -e "  2) Não, reconfigurar"
-        echo -n "Escolha [1/2]: "
+        read -r -p "Escolha [1/2]: " choice < /dev/tty
-        read -r choice
         if [[ "$choice" == "1" ]]; then
             save_config
             return 0
@@ -147,8 +144,7 @@ collect_user_input() {
     echo "Você usa CloudFlare para DNS?"
     echo "  1) Sim (com proxy/CDN ativado - ícone laranja)"
     echo "  2) Não"
-    echo -n "Escolha [1/2]: "
+    read -r -p "Escolha [1/2]: " choice < /dev/tty
-    read -r choice
 
     if [[ "$choice" == "1" ]]; then
         USE_CLOUDFLARE=true
@@ -161,14 +157,12 @@ collect_user_input() {
         echo "Deseja ativar HTTPS com Let's Encrypt?"
         echo "  1) Sim (recomendado para produção)"
         echo "  2) Não (apenas HTTP)"
-        echo -n "Escolha [1/2]: "
+        read -r -p "Escolha [1/2]: " choice < /dev/tty
-        read -r choice
 
         if [[ "$choice" == "1" ]]; then
             USE_LETSENCRYPT=true
             echo ""
-            echo -n "Digite seu email para Let's Encrypt: "
+            read -r -p "Digite seu email para Let's Encrypt: " LETSENCRYPT_EMAIL < /dev/tty
-            read -r LETSENCRYPT_EMAIL
 
             if [[ -z "$LETSENCRYPT_EMAIL" ]]; then
                 log_error "Email é obrigatório para Let's Encrypt"
@@ -340,8 +334,7 @@ if [[ "$USE_LETSENCRYPT" == "true" ]]; then
     echo -e "${YELLOW}  O Let's Encrypt precisa do DNS configurado para emitir o certificado.${NC}"
 fi
 echo ""
-echo -n "Pressione ENTER quando o DNS estiver configurado..."
+read -r -p "Pressione ENTER quando o DNS estiver configurado..." < /dev/tty
-read -r
 
 echo ""
 

aula-11/cleanup.sh

@@ -42,7 +42,13 @@ fi
 
 # Remover namespace argocd
 log_info "Removendo namespace argocd..."
-kubectl delete namespace argocd --timeout=60s 2>/dev/null || true
+kubectl delete namespace argocd --timeout=120s 2>/dev/null || {
+    log_warn "Namespace preso em Terminating, forçando remoção..."
+    kubectl get namespace argocd -o json | \
+        python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+        kubectl replace --raw /api/v1/namespaces/argocd/finalize -f - 2>/dev/null || true
+    kubectl wait --for=delete namespace argocd --timeout=60s 2>/dev/null || sleep 5
+}
 
 # Limpar secrets residuais
 log_info "Limpando secrets residuais..."

aula-11/setup.sh

@@ -236,7 +236,17 @@ log_info "=== Instalando ArgoCD ==="
 helm repo add argo https://argoproj.github.io/argo-helm 2>/dev/null || true
 helm repo update
 
-kubectl create namespace argocd 2>/dev/null || true
+if kubectl get namespace argocd &>/dev/null; then
+    NS_PHASE=$(kubectl get namespace argocd -o jsonpath='{.status.phase}' 2>/dev/null)
+    if [[ "$NS_PHASE" == "Terminating" ]]; then
+        log_info "Namespace argocd em Terminating, forçando remoção..."
+        kubectl get namespace argocd -o json | \
+            python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+            kubectl replace --raw /api/v1/namespaces/argocd/finalize -f - 2>/dev/null || true
+        kubectl wait --for=delete namespace argocd --timeout=60s 2>/dev/null || sleep 5
+    fi
+fi
+kubectl create namespace argocd --dry-run=client -o yaml | kubectl apply -f -
 
 if helm status argocd -n argocd &> /dev/null; then
     log_warn "ArgoCD já instalado, fazendo upgrade..."

aula-12/cleanup.sh

@@ -39,19 +39,39 @@ echo ""
 # Remover Helm release
 log_info "Removendo Victoria Metrics Stack..."
 if helm status monitoring -n monitoring &> /dev/null; then
-    helm uninstall monitoring -n monitoring --wait 2>/dev/null || true
+    helm uninstall monitoring -n monitoring --wait --timeout=120s 2>/dev/null || {
+        log_warn "Helm uninstall falhou, removendo com --no-hooks..."
+        helm uninstall monitoring -n monitoring --no-hooks 2>/dev/null || true
+    }
     log_success "Helm release removido"
 else
     log_info "Helm release não encontrado"
 fi
 
+# Remover finalizers de CRDs do Victoria Metrics (podem prender o namespace)
+log_info "Limpando finalizers de CRDs..."
+for crd in vmagents vmalerts vmsingles vmclusters vmnodes vmrules vmauths; do
+    for resource in $(kubectl get $crd.operator.victoriametrics.com -n monitoring -o name 2>/dev/null); do
+        kubectl patch "$resource" -n monitoring --type=json \
+            -p='[{"op":"remove","path":"/metadata/finalizers"}]' 2>/dev/null || true
+    done
+done
+
 # Remover PVCs
 log_info "Removendo PVCs..."
 kubectl delete pvc --all -n monitoring --wait=false 2>/dev/null || true
 
 # Remover namespace
 log_info "Removendo namespace..."
-kubectl delete namespace monitoring --timeout=60s 2>/dev/null || true
+if kubectl get namespace monitoring &>/dev/null; then
+    kubectl delete namespace monitoring --timeout=120s 2>/dev/null || {
+        log_warn "Namespace preso em Terminating, forçando remoção..."
+        kubectl get namespace monitoring -o json | \
+            python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+            kubectl replace --raw /api/v1/namespaces/monitoring/finalize -f - 2>/dev/null || true
+        kubectl wait --for=delete namespace monitoring --timeout=60s 2>/dev/null || sleep 5
+    }
+fi
 log_success "Namespace removido"
 
 # Remover .env

aula-12/setup.sh

@@ -184,7 +184,27 @@ log_info "=== Instalando Victoria Metrics Stack ==="
 helm repo add vm https://victoriametrics.github.io/helm-charts/ 2>/dev/null || true
 helm repo update vm
 
-kubectl create namespace monitoring 2>/dev/null || true
+# Garantir namespace limpo
+if kubectl get namespace monitoring &>/dev/null; then
+    NS_PHASE=$(kubectl get namespace monitoring -o jsonpath='{.status.phase}' 2>/dev/null)
+    if [[ "$NS_PHASE" == "Terminating" ]]; then
+        log_info "Namespace monitoring em Terminating, limpando finalizers..."
+        # Remover finalizers de CRDs do Victoria Metrics que prendem o namespace
+        for crd in vmagents vmalerts vmsingles vmclusters vmnodes vmrules vmauths; do
+            for resource in $(kubectl get $crd.operator.victoriametrics.com -n monitoring -o name 2>/dev/null); do
+                kubectl patch "$resource" -n monitoring --type=json \
+                    -p='[{"op":"remove","path":"/metadata/finalizers"}]' 2>/dev/null || true
+            done
+        done
+        kubectl wait --for=delete namespace monitoring --timeout=60s 2>/dev/null || {
+            kubectl get namespace monitoring -o json | \
+                python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+                kubectl replace --raw /api/v1/namespaces/monitoring/finalize -f - 2>/dev/null || true
+            kubectl wait --for=delete namespace monitoring --timeout=30s 2>/dev/null || sleep 5
+        }
+    fi
+fi
+kubectl create namespace monitoring --dry-run=client -o yaml | kubectl apply -f -
 kubectl label namespace monitoring pod-security.kubernetes.io/enforce=privileged --overwrite
 
 if helm status monitoring -n monitoring &> /dev/null; then

aula-14/cleanup.sh

@@ -56,7 +56,13 @@ kubectl delete pod curl-test -n istio --ignore-not-found=true 2>/dev/null || tru
 # Remover namespace istio (aplicação demo)
 if kubectl get namespace istio &> /dev/null; then
     log_info "Removendo namespace istio..."
-    kubectl delete namespace istio --wait=false 2>/dev/null || true
+    kubectl delete namespace istio --timeout=120s 2>/dev/null || {
+        log_warn "Namespace preso em Terminating, forçando remoção..."
+        kubectl get namespace istio -o json | \
+            python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+            kubectl replace --raw /api/v1/namespaces/istio/finalize -f - 2>/dev/null || true
+        kubectl wait --for=delete namespace istio --timeout=60s 2>/dev/null || sleep 5
+    }
     log_success "Namespace istio marcado para remoção"
 else
     log_info "Namespace istio não encontrado"
@@ -94,7 +100,13 @@ fi
 # Remover namespace istio-system
 if kubectl get namespace istio-system &> /dev/null; then
     log_info "Removendo namespace istio-system..."
-    kubectl delete namespace istio-system --wait=false 2>/dev/null || true
+    kubectl delete namespace istio-system --timeout=120s 2>/dev/null || {
+        log_warn "Namespace preso em Terminating, forçando remoção..."
+        kubectl get namespace istio-system -o json | \
+            python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+            kubectl replace --raw /api/v1/namespaces/istio-system/finalize -f - 2>/dev/null || true
+        kubectl wait --for=delete namespace istio-system --timeout=60s 2>/dev/null || sleep 5
+    }
     log_success "Namespace istio-system marcado para remoção"
 fi
 

aula-14/setup.sh

@@ -222,7 +222,17 @@ install_istio() {
     helm repo add istio https://istio-release.storage.googleapis.com/charts 2>/dev/null || true
     helm repo update istio
 
-    kubectl create namespace istio-system 2>/dev/null || true
+    if kubectl get namespace istio-system &>/dev/null; then
+        NS_PHASE=$(kubectl get namespace istio-system -o jsonpath='{.status.phase}' 2>/dev/null)
+        if [[ "$NS_PHASE" == "Terminating" ]]; then
+            log_info "Namespace istio-system em Terminating, forçando remoção..."
+            kubectl get namespace istio-system -o json | \
+                python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+                kubectl replace --raw /api/v1/namespaces/istio-system/finalize -f - 2>/dev/null || true
+            kubectl wait --for=delete namespace istio-system --timeout=60s 2>/dev/null || sleep 5
+        fi
+    fi
+    kubectl create namespace istio-system --dry-run=client -o yaml | kubectl apply -f -
     kubectl label namespace istio-system \
         pod-security.kubernetes.io/enforce=privileged \
         pod-security.kubernetes.io/warn=privileged \
@@ -577,8 +587,7 @@ main() {
         echo -e "${YELLOW}⚠ Configure o DNS agora antes de continuar.${NC}"
     fi
     echo ""
-    echo -n "Pressione ENTER quando o DNS estiver configurado..."
+    read -r -p "Pressione ENTER quando o DNS estiver configurado..." < /dev/tty
-    read -r
 
     setup_ingress
     build_and_push_images

aula-17/README.md

@@ -14,7 +14,7 @@ Nesta aula, vamos instalar o CNPG do zero, criar um cluster HA com backup autom
 
 | Item | AWS RDS Multi-AZ | CNPG na Hetzner |
 |------|------------------|-----------------|
-| Compute | db.r6g.large ~$185/mês | 3× CPX31 ~€36/mês (~$40) |
+| Compute | db.r6g.large ~$185/mês | 3× CX33 ~€24/mês (~$27) |
 | Storage 200GB | ~$23/mês (gp3) | ~€9/mês (hcloud volumes) |
 | Backup | 7 dias (free) | ~€6/mês (Object Storage 1TB) |
 | **Total mensal** | **~$208/mês** | **~€51/mês (~$56)** |
@@ -26,7 +26,7 @@ Nesta aula, vamos instalar o CNPG do zero, criar um cluster HA com backup autom
 
 ### Por que Hetzner?
 
-- CPX31: 4 vCPU AMD, 8GB RAM, 160GB NVMe → **~€12/mês**
+- CX33: 4 vCPU Intel, 8GB RAM, 80GB NVMe → **~€8/mês**
 - Object Storage: 1TB S3-compatible, 1TB egress free → **~€6/mês**
 - Sem surpresas: preço fixo, sem egress cost como AWS ($0.09/GB)
 
@@ -48,7 +48,7 @@ Dois operadores PostgreSQL maduros para Kubernetes. Qual escolher?
 
 ### Por que CNPG para indie hackers?
 
-1. **Menos recursos = custo menor**. StackGres consome 3-5× mais RAM em sidecars. Num CPX31 com 8GB, isso faz diferença.
+1. **Menos recursos = custo menor**. StackGres consome 3-5× mais RAM em sidecars. Num CX33 com 8GB, isso faz diferença.
 2. **Setup mais simples**. Um Cluster CRD resolve. StackGres precisa de SGCluster, SGPostgresConfig, SGPgBouncerConfig, SGBackupConfig, SGPoolingConfig...
 3. **CNCF Sandbox**. Governança aberta, roadmap transparente, não depende de uma empresa.
 4. **GitOps nativo**. CRDs foram desenhados pra serem declarativos. Funciona com ArgoCD/Flux sem hacks.

aula-17/cleanup.sh

@@ -73,13 +73,25 @@ log_success "Secrets removidos"
 
 # 5. Remover namespace
 log_info "Removendo namespace cnpg..."
-kubectl delete namespace cnpg --ignore-not-found=true 2>/dev/null || true
+kubectl delete namespace cnpg --timeout=120s 2>/dev/null || {
+    log_warn "Namespace preso em Terminating, forçando remoção..."
+    kubectl get namespace cnpg -o json | \
+        python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+        kubectl replace --raw /api/v1/namespaces/cnpg/finalize -f - 2>/dev/null || true
+    kubectl wait --for=delete namespace cnpg --timeout=60s 2>/dev/null || sleep 5
+}
 log_success "Namespace cnpg removido"
 
 # 6. Remover CNPG Operator
 log_info "Removendo CNPG operator..."
 helm uninstall cnpg -n cnpg-system --wait 2>/dev/null || true
-kubectl delete namespace cnpg-system --ignore-not-found=true 2>/dev/null || true
+kubectl delete namespace cnpg-system --timeout=120s 2>/dev/null || {
+    log_warn "Namespace preso em Terminating, forçando remoção..."
+    kubectl get namespace cnpg-system -o json | \
+        python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+        kubectl replace --raw /api/v1/namespaces/cnpg-system/finalize -f - 2>/dev/null || true
+    kubectl wait --for=delete namespace cnpg-system --timeout=60s 2>/dev/null || sleep 5
+}
 log_success "CNPG operator removido"
 
 # 7. Remover CRDs

aula-17/cnpg/cluster.yaml

@@ -12,29 +12,15 @@ spec:
   #   topology.kubernetes.io/zone   = fsn1 | nbg1 | hel1  (datacenter)
   #   topology.kubernetes.io/region = eu-central | hel-southeast
   #
-  # Layer 1: podAntiAffinity on hostname (hard constraint)
+  # podAntiAffinityType: required → no 2 PG pods on same node (hard constraint)
-  #   → No 2 PG pods on the same node. Ever.
+  # topologyKey: kubernetes.io/hostname → spread across nodes
   #
-  # Layer 2: podAntiAffinity on zone (soft constraint)
+  # For cross-DC spread, CNPG relies on Kubernetes scheduler topology awareness.
-  #   → Prefer spreading across datacenters. With nodes in fsn1, nbg1, hel1,
+  # With nodes in multiple zones (fsn1, nbg1, hel1), the scheduler naturally
-  #     you get 1 pod per DC. With only eu-central nodes, they still spread
+  # spreads pods when combined with the node autoscaler.
-  #     across FSN and NBG (both in eu-central, ~1-2ms apart).
-  #
-  # Prerequisite for cross-region (eu-central + HEL):
-  #   - Node pool in eu-central (FSN + NBG) → aula-08
-  #   - Node pool in hel-southeast (HEL)    → add worker after aula-08
-  #   - Without HEL nodes, all 3 pods stay in eu-central (still HA within region)
   affinity:
     topologyKey: kubernetes.io/hostname
     podAntiAffinityType: required
-    podAntiAffinity:
-      preferredDuringSchedulingIgnoredDuringExecution:
-        - weight: 100
-          podAffinityTerm:
-            topologyKey: topology.kubernetes.io/zone
-            labelSelector:
-              matchLabels:
-                cnpg.io/cluster: shared-postgres
   storage:
     size: 10Gi
     storageClass: hcloud-volumes
@@ -60,10 +46,6 @@ spec:
     initdb:
       database: app
       owner: app
-      secret:
-        name: shared-postgres-superuser
-  superuserSecret:
-    name: shared-postgres-superuser
   backup:
     barmanObjectStore:
       destinationPath: s3://CHANGE_BUCKET_NAME/cnpg-backups/shared-postgres

aula-17/setup.sh

@@ -135,26 +135,22 @@ collect_config() {
     if [[ -z "$S3_ENDPOINT" ]]; then
         S3_ENDPOINT="nbg1.your-objectstorage.com"
     fi
-    echo -ne "Endpoint (${GREEN}${S3_ENDPOINT}${NC}): "
+    read -r -p "Endpoint (${GREEN}${S3_ENDPOINT}${NC}): " input < /dev/tty
-    read -r input
     [[ -n "$input" ]] && S3_ENDPOINT="$input"
 
     if [[ -z "$S3_BUCKET" ]]; then
         S3_BUCKET="cnpg-backups"
     fi
-    echo -ne "Bucket name (${GREEN}${S3_BUCKET}${NC}): "
+    read -r -p "Bucket name (${GREEN}${S3_BUCKET}${NC}): " input < /dev/tty
-    read -r input
     [[ -n "$input" ]] && S3_BUCKET="$input"
 
-    echo -ne "Access Key ID: "
+    read -r -p "Access Key ID: " S3_ACCESS_KEY < /dev/tty
-    read -r S3_ACCESS_KEY
     if [[ -z "$S3_ACCESS_KEY" ]]; then
         log_error "Access Key é obrigatória"
         exit 1
     fi
 
-    echo -ne "Secret Access Key: "
+    read -rs -p "Secret Access Key: " S3_SECRET_KEY < /dev/tty
-    read -rs S3_SECRET_KEY
     echo ""
     if [[ -z "$S3_SECRET_KEY" ]]; then
         log_error "Secret Key é obrigatória"
@@ -191,7 +187,7 @@ install_cnpg_operator() {
     log_success "CNPG operator instalado"
 
     log_info "Aguardando operator ficar ready..."
-    kubectl wait --for=condition=available deployment/cnpg-controller-manager -n cnpg-system --timeout=120s
+    kubectl wait --for=condition=available deployment/cnpg-cloudnative-pg -n cnpg-system --timeout=120s
     log_success "CNPG operator pronto"
 }
 
@@ -205,6 +201,16 @@ setup_namespace_and_secrets() {
     echo -e "${CYAN}  Criando namespace e secrets${NC}"
     echo -e "${CYAN}═══════════════════════════════════════════════════════════${NC}"
 
+    if kubectl get namespace cnpg &>/dev/null; then
+        NS_PHASE=$(kubectl get namespace cnpg -o jsonpath='{.status.phase}' 2>/dev/null)
+        if [[ "$NS_PHASE" == "Terminating" ]]; then
+            log_info "Namespace cnpg em Terminating, forçando remoção..."
+            kubectl get namespace cnpg -o json | \
+                python3 -c "import sys,json; d=json.load(sys.stdin); d['metadata'].pop('finalizers',None); json.dump(d,sys.stdout)" | \
+                kubectl replace --raw /api/v1/namespaces/cnpg/finalize -f - 2>/dev/null || true
+            kubectl wait --for=delete namespace cnpg --timeout=60s 2>/dev/null || sleep 5
+        fi
+    fi
     kubectl create namespace cnpg --dry-run=client -o yaml | kubectl apply -f -
 
     log_info "Criando secret de credenciais S3..."
@@ -228,7 +234,7 @@ create_cluster() {
 
     log_info "Gerando cluster.yaml com suas configurações..."
     sed -e "s|CHANGE_BUCKET_NAME|${S3_BUCKET}|g" \
-        -e "s|CHANGE_ENDPOINT|https://${S3_ENDPOINT}|g" \
+        -e "s|CHANGE_ENDPOINT|${S3_ENDPOINT}|g" \
         "${SCRIPT_DIR}/cnpg/cluster.yaml" | kubectl apply -f -
 
     log_success "Cluster aplicado"