Pod-to-pod communication
While pods can communicate with each other using direct IP addresses, it is not the recommended way of communicating. Pods are ephemeral and are meant to be replaced, rather than managed directly.
There are a few different ways that pods can communicate with each other in Kubernetes:
- Within the same node: Pods can communicate with each other using localhost or their own IP addresses, just as processes on a regular host can.
- Across nodes: Pods can communicate with each other across nodes using their own IP addresses, just as processes on different hosts can. However, this can be difficult to set up and manage, so it is usually easier to use a service to facilitate communication between pods.
- Using a service: A Kubernetes service is a logical abstraction over a group of pods, and it provides a stable IP address and DNS name for those pods. Pods can communicate with each other using the DNS name of the service, rather than the IP addresses of...
