Services, Load Balancing, and Networking

Concepts and resources behind networking in Kubernetes.

Kubernetes networking addresses four concerns:

  • Containers within a Pod use networking to communicate via loopback.
  • Cluster networking provides communication between different Pods.
  • The Service resource lets you expose an application running in Pods to be reachable from outside your cluster.
  • You can also use Services to publish services only for consumption inside your cluster.
Service
Topology-aware traffic routing with topology keys
DNS for Services and Pods
Connecting Applications with Services
Ingress
Ingress Controllers
EndpointSlices
Service Internal Traffic Policy
Topology Aware Hints
Network Policies
IPv4/IPv6 dual-stack