: An agent that runs on every node, ensuring containers in a pod are running and healthy.
The cluster firewall. Defines which pods can talk to which other pods. By default, Kubernetes allows all traffic (every pod can see every pod). NP enforces "Zero Trust" networks. : An agent that runs on every node,
: A secondary container in a Pod that enhances the primary container (e.g., a logging proxy). Init Container : Runs and completes before the main app container starts. Roadmap.sh Networking and Service Discovery How applications talk to each other and the outside world. Service (ClusterIP) : Internal-only IP for communication within the cluster. Service (NodePort) : Exposes the service on a static port on each Node’s IP. Service (LoadBalancer) : Provisions a cloud provider's external load balancer. By default, Kubernetes allows all traffic (every pod