Multicluster networking

As explained in Google Anthos in Action

Multicluster networking is networking that enables communication among services or workloads in multiple Kubernetes clusters.

Multicluster networking connects services and workloads across multiple Kubernetes clusters, whether those clusters share one infrastructure environment or span public cloud, on-premises, and multiple clouds. It forms the cluster-to-cluster layer within a broader Anthos networking architecture. section 10.0

Choose the connectivity model according to cluster placement:

• Use a flat network with a single or shared VPC for VPC-native GKE clusters on GCP; Pod-to-Pod connectivity can work across regions without additional configuration. section 10.5
• Configure additional networking for multiple-VPC GCP architectures, using special gateways or an Ingress model to connect Pods and Services. section 10.5
• Use gateways or Ingress for non-GCP clusters, whose cluster networks and address ranges are isolated by default. section 10.5
• Deploy Anthos Service Mesh east-west gateways across participating clusters when multicluster service discovery and cross-cluster communication are required. section 10.5

Figure 10.1 Four layers of Anthos networking

Use the four-layer networking diagram to distinguish cloud or hybrid connectivity, cluster networking, multicluster networking, and service or client connectivity. section 10.0

How Google Anthos in Action covers it

How deep it goes

Distinguishes flat VPC, multiple-VPC, and gateway-based designs, but does not detail gateway configuration.

Examples

Uses GKE clusters across regions, GCP multiple-VPC deployments, and clusters spanning GCP, on-premises, AWS, and Azure.

What it assumes

Assumes familiarity with Kubernetes clusters, Services, Pods, VPCs, and hybrid or multicloud infrastructure.

What you can do after

Evaluate connectivity designs for services distributed across GKE, Anthos, and conformant Kubernetes clusters.

How it connects

Connects Anthos networking with hybrid connectivity, Ingress, service discovery, routing, VPC networking, and Anthos Service Mesh.

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Related concepts

• Kubernetes clusteruses · A Kubernetes cluster is a set of control-plane and worker machines managed by Kubernetes to run and coordinate workloads and services.
• serviceuses · A Kubernetes Service is an API resource that provides stable network access and service discovery for a changing set of Pods or other specified destinations.
• anthos networkingpart of · Anthos networking is the set of networking capabilities for connecting Anthos environments, clusters, services, and clients.
• Google Clouduses · Google Cloud is Google's public cloud computing platform, providing infrastructure, platform, and managed services for building and operating applications.
• multi-cluster setuppart of · A multi-cluster setup is an architecture that distributes workloads, services, or platform capabilities across multiple Kubernetes clusters.

This explainer was generated by Manning's knowledge graph from the text of Google Anthos in Action. The section links point to the parts of the book it draws on.