The diagram below illustrates the basic architecture of Submariner:
Submariner consists of several main components that work in conjunction to securely connect workloads across multiple Kubernetes clusters,
both on-premises and on public clouds:
- Gateway Engine: manages the secure tunnels to other clusters.
- Route Agent: routes cross-cluster traffic from nodes to the active Gateway Engine.
- Broker: facilitates the exchange of metadata between Gateway Engines enabling them to discover one another.
- Service Discovery: provides DNS discovery of Services across clusters.
Submariner has optional components that provide additional functionality: