EKS NLB — 3 Availability Zones (top-down + cost)
Clients → Route53 → NLB → ENI theo từng AZ, annotation chi phí và hai chế độ IP / instance.
IP modeRecommendedAWS LBC required
Traffic path: Client → Route53 → NLB → NLB ENI (AZ) → Pod IP trực tiếp
Cost breakdown:
• DNS query: $0
• NLB processing: ~$0.006/LCU-hr
• Client → NLB ENI cùng AZ: $0 (cần bật Zonal Affinity)
• Client → NLB ENI khác AZ: $0.02/GB (nếu không bật Zonal Affinity)
• NLB ENI → Pod cùng AZ: $0 (cần tắt Cross-Zone LB)
• NLB ENI → Pod khác AZ: $0.02/GB (nếu Cross-Zone LB bật)
Config tối ưu (AZI):
Traffic path: Client → Route53 → NLB → NLB ENI (AZ) → Pod IP trực tiếp
Cost breakdown:
• DNS query: $0
• NLB processing: ~$0.006/LCU-hr
• Client → NLB ENI cùng AZ: $0 (cần bật Zonal Affinity)
• Client → NLB ENI khác AZ: $0.02/GB (nếu không bật Zonal Affinity)
• NLB ENI → Pod cùng AZ: $0 (cần tắt Cross-Zone LB)
• NLB ENI → Pod khác AZ: $0.02/GB (nếu Cross-Zone LB bật)
Config tối ưu (AZI):
dns_record.client_routing_policy: availability_zone_affinityload_balancing.cross_zone.enabled: falsenlb-target-type: "ip"