Monitor Cilium and Kubernetes performance with Hubble

This text discusses Hubble, a tool that enables visualization of network traffic in Cilium-managed Kubernetes clusters and networks. It explains how Hubble collects and aggregates network data from every pod to provide visibility into request throughput, status, errors, and more. The text also describes the two primary components of Hubble: servers and the Hubble Relay, which are used for monitoring multiple levels of network traffic such as TCP connections, DNS queries, and HTTP requests across clusters or cluster meshes. Furthermore, it provides instructions on enabling Hubble and using its CLI and UI to monitor network traffic, investigate issues, and troubleshoot problems in the Kubernetes environment.