Key metrics for monitoring Cilium

Cilium is a Container Network Interface (CNI) that enhances security and load-balancing in Kubernetes environments by extending existing network capabilities. It allows teams to build advanced identity and application-aware network policies, replacing traditional firewalls and enabling cross-cluster communication. Cilium leverages Extended Berkeley Packet Filter (eBPF) to apply network and security logic in the Linux kernel without modifying application code or container configurations. Monitoring Cilium ensures that Kubernetes applications are processing requests as expected, making it a critical part of securing overall environments and supporting distributed applications.