Pod Networking Basics

What it is: How Pods communicate with each other and the outside network in Kubernetes/EKS.

What it’s for:

• Enable service-to-service communication in a microservices architecture.
• Control traffic using Kubernetes Services and network policies (when available).

Key ideas:

• Pods typically have their own IP address.
• A Kubernetes Service provides stable DNS/name and load balancing to Pods.
• Security groups protect nodes/ENIs; in-cluster traffic control can use NetworkPolicy (implementation-dependent).

Hard words:

• *DNS* /ˌdiː en ˈes/: hệ thống tên miền
• *load balancing* /loʊd ˈbælənsiŋ/: cân bằng tải
• *stable* /ˈsteɪbəl/: ổn định
• *policy* /ˈpɑːləsi/: chính sách