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Deep dive into cluster networking for Amazon EKS Hybrid Nodes

Containers Blog



This article provides a comprehensive guide to cluster networking for Amazon EKS Hybrid Nodes, exploring various networking configurations and load balancing solutions for integrating on-premises infrastructure with EKS clusters.

  • Key networking requirements include:
    • Private network connectivity between EKS control plane and hybrid nodes
    • Reliable network with 100 Mbps bandwidth and max 200ms latency
    • IPv4 RFC-1918 CIDR blocks for nodes and pods
  • CNI Considerations:
  • Amazon VPC CNI is not compatible with Hybrid Nodes
  • Compatible CNIs include Calico and Cilium
  • Requires configuring routing for pod CIDRs
  • Load Balancing Options:
  • MetalLB for on-premises local traffic
  • AWS Load Balancer Controller for external access
  • Routing Methods Demonstrated:
  • BGP Routing with Cilium
  • Static Routing with Calico

The article provides detailed walkthrough steps for implementing these networking strategies, helping organizations modernize infrastructure while maintaining operational consistency.



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