Every server, container, and database in your infrastructure needs to talk to something else. Networking is the "plumbing" of the internet.
What is Networking?
Networking is the practice of connecting computers together to share resources. In DevOps, this means ensuring your web server can talk to your database, your load balancer can talk to your pods, and your users can talk to your load balancer.
Key Concepts
- Host: Any device on the network (Server, PC, Phone).
- IP Address: The unique "mailing address" of a host.
- Protocol: The "language" hosts use to speak (e.g., HTTP for web, SSH for remote access).
- Port: The specific "doorway" on a host for a specific service (e.g., 80 for web).