feat: Add deployment scripts and hard node affinity for nginx-load-balancer example
This commit is contained in:
mik-tf
202
examples/nginx-load-balancer/clean-deploy.sh
Executable file
202
examples/nginx-load-balancer/clean-deploy.sh
Executable file
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#!/bin/bash
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# Clean deploy script for nginx-load-balancer
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# Removes existing resources and deploys with fixes applied
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set -e
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echo "🧹 Clean Deploy nginx-load-balancer"
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echo "==================================="
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echo ""
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# Colors
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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RED='\033[0;31m'
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NC='\033[0m' # No Color
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echo "🗑️ Step 1: Cleaning up existing resources..."
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echo ""
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# Delete existing resources if they exist
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echo "Removing existing nginx-load-balancer resources..."
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if kubectl get deployment nginx-load-balancer &> /dev/null; then
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echo "• Deleting deployment..."
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kubectl delete deployment nginx-load-balancer --ignore-not-found=true
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fi
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if kubectl get service nginx-load-balancer-service &> /dev/null; then
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echo "• Deleting service..."
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kubectl delete service nginx-load-balancer-service --ignore-not-found=true
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fi
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if kubectl get configmap nginx-load-balancer-content &> /dev/null; then
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echo "• Deleting configmaps..."
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kubectl delete configmap nginx-load-balancer-content --ignore-not-found=true
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fi
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if kubectl get configmap nginx-load-balancer-nginx-config &> /dev/null; then
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kubectl delete configmap nginx-load-balancer-nginx-config --ignore-not-found=true
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fi
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echo -e "${GREEN}✅ Cleanup complete${NC}"
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echo ""
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# Wait a moment for resources to be fully cleaned up
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echo "⏳ Waiting for cleanup to complete (5 seconds)..."
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sleep 5
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echo ""
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echo "🚀 Step 2: Deploying with fixes applied..."
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echo ""
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# Deploy ConfigMaps
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echo "📦 Deploying ConfigMaps..."
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if kubectl apply -f nginx-load-balancer-configmaps.yaml; then
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echo -e "${GREEN}✅ ConfigMaps deployed successfully${NC}"
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else
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echo -e "${RED}❌ Failed to deploy ConfigMaps${NC}"
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exit 1
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fi
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echo ""
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# Deploy Deployment (with hard node affinity)
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echo "📦 Deploying nginx application (3 replicas, worker-only)..."
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if kubectl apply -f nginx-load-balancer-deployment.yaml; then
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echo -e "${GREEN}✅ Deployment created successfully${NC}"
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echo " • Hard node affinity: Worker nodes only"
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echo " • Replicas: 3"
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echo " • Image: nginx:alpine"
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else
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echo -e "${RED}❌ Failed to create deployment${NC}"
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exit 1
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fi
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echo ""
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# Deploy Service (without externalTrafficPolicy: Local)
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echo "📦 Creating LoadBalancer service..."
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if kubectl apply -f nginx-load-balancer-service.yaml; then
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echo -e "${GREEN}✅ LoadBalancer service created successfully${NC}"
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echo " • Type: LoadBalancer"
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echo " • ExternalTrafficPolicy: None (optimized for Mycelium)"
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echo " • Dual-stack: IPv4 + IPv6"
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else
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echo -e "${RED}❌ Failed to create service${NC}"
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exit 1
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fi
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echo ""
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echo "⏳ Step 3: Waiting for deployment to be ready..."
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echo " This may take up to 60 seconds..."
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echo ""
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# Wait for deployment to be ready
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if kubectl wait --for=condition=available deployment/nginx-load-balancer --timeout=120s; then
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echo -e "${GREEN}✅ Deployment is ready${NC}"
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else
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echo -e "${YELLOW}⚠️ Deployment not fully ready yet (pods may still be starting)${NC}"
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fi
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echo ""
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# Check pod status
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echo "🔍 Step 4: Checking pod distribution..."
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PODS=$(kubectl get pods -l app=nginx-load-balancer -o wide)
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if echo "$PODS" | grep -q "master"; then
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echo -e "${RED}❌ ISSUE: Pods found on master nodes (this shouldn't happen with hard affinity)${NC}"
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echo "$PODS"
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else
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echo -e "${GREEN}✅ EXCELLENT: No pods on master nodes (hard affinity working)${NC}"
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fi
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echo "$PODS"
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echo ""
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# Count pods
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TOTAL_PODS=$(echo "$PODS" | grep -v "NAME" | wc -l)
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echo "Total pods running: $TOTAL_PODS"
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if [ "$TOTAL_PODS" -eq 3 ]; then
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echo -e "${GREEN}✅ Perfect: 3/3 pods running${NC}"
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elif [ "$TOTAL_PODS" -lt 3 ]; then
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echo -e "${YELLOW}⚠️ Partial: $TOTAL_PODS/3 pods running (pods may still be starting)${NC}"
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else
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echo -e "${YELLOW}⚠️ Unexpected: $TOTAL_PODS pods running (expected 3)${NC}"
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fi
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echo ""
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# Check LoadBalancer service
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echo "🌐 Step 5: Checking LoadBalancer service..."
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SERVICE=$(kubectl get svc nginx-load-balancer-service)
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echo "$SERVICE"
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echo ""
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SERVICE_IP=$(kubectl get svc nginx-load-balancer-service -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
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SERVICE_PORT=$(kubectl get svc nginx-load-balancer-service -o jsonpath='{.spec.ports[0].port}')
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if [ -n "$SERVICE_IP" ]; then
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echo -e "${GREEN}✅ LoadBalancer IP assigned: $SERVICE_IP${NC}"
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echo " Service URL: http://$SERVICE_IP:$SERVICE_PORT"
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# Test LoadBalancer access
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echo ""
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echo "🧪 Testing LoadBalancer IP access..."
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if timeout 10 curl -s -f "http://$SERVICE_IP:$SERVICE_PORT" > /dev/null 2>&1; then
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echo -e "${GREEN}✅ LoadBalancer IP is accessible!${NC}"
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echo " Test command: curl -6 'http://$SERVICE_IP:$SERVICE_PORT'"
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else
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echo -e "${YELLOW}⚠️ LoadBalancer IP not yet accessible (may take time to propagate)${NC}"
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echo " Try: curl -6 'http://$SERVICE_IP:$SERVICE_PORT'"
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fi
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else
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echo -e "${YELLOW}⚠️ LoadBalancer IP not yet assigned (may take time)${NC}"
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fi
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echo ""
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# Test direct node access
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echo "🔗 Step 6: Testing direct node access..."
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NODE_IPS=$(kubectl get nodes -o jsonpath='{range .items[*]}{.status.addresses[?@.type=="InternalIP"].address}{"\n"}{end}' | head -3)
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for node_ip in $NODE_IPS; do
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echo "Testing node: $node_ip"
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if timeout 5 curl -s -f "http://$node_ip:8080" > /dev/null 2>&1; then
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echo -e "${GREEN} ✅ Direct node access works${NC}"
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break
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else
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echo -e "${YELLOW} ⚠️ Direct node access failed (no pod on this node)${NC}"
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fi
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done
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echo ""
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# Final summary
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echo "==================================="
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echo "🎉 CLEAN DEPLOY COMPLETE!"
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echo "==================================="
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echo ""
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echo -e "${BLUE}📊 Deployment Summary:${NC}"
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echo "• ✅ Clean deployment with fixes applied"
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echo "• ✅ Hard node affinity (worker nodes only)"
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echo "• ✅ LoadBalancer service (no externalTrafficPolicy)"
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echo "• ✅ 3 nginx replicas"
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echo ""
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if [ -n "$SERVICE_IP" ]; then
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echo -e "${BLUE}🌐 Access Information:${NC}"
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echo "• LoadBalancer URL: http://$SERVICE_IP:$SERVICE_PORT"
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echo " (This should do real load balancing across pods)"
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echo ""
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echo "• Direct node access: Get node IPs with 'kubectl get nodes -o wide'"
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echo " (This bypasses load balancer, goes directly to pods)"
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echo ""
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echo -e "${BLUE}🧪 Test Commands:${NC}"
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echo "• LoadBalancer (load balancing): curl -6 'http://$SERVICE_IP:$SERVICE_PORT'"
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echo "• Node access: Get node IP and curl -6 'http://[node-ip]:8080'"
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echo "• Monitor pods: kubectl get pods -l app=nginx-load-balancer -o wide"
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echo "• Check service: kubectl get svc nginx-load-balancer-service"
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fi
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echo ""
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echo -e "${GREEN}✅ Clean deploy with fixes completed successfully!${NC}"
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