Networking

Networking

Kubernetes dictates the following requirements on any networking implementation:

  • All Pods can communicate with all other Pods without using network address translation (NAT).
  • All Nodes can communicate with all Pods without NAT.
  • The IP that a Pod sees itself as is the same IP that others see it as.
Four distinct Network problems to address:

  1. Highly-coupled container-to-container communications

  2. Pod-to-Pod communications

  3. Pod-to-Service communications

  4. External-to-Service communications