eBPF Observability eBPF (extended Berkeley Packet Filter) allows you to run sandboxed programs in the Linux kernel without modifying kernel source code or loading kernel modules. This skill covers using eBPF for deep observability, network monitoring, and security enforcement across cloud-native infrastructure. --- 1. When to Use Use eBPF-based observability when you need: - Deep performance debugging -- trace kernel-level latency, syscall overhead, and scheduling delays that application-level metrics cannot reveal. - Network observability without sidecars -- capture L3/L4/L7 flows, DNS queri…