Hubble Observer

The Hubble Observer is a small observability component that monitors network flows within Cilium.

The Hubble Observer includes a Grafana dashboard for visualizing Cilium network flows. Here's a preview of the dashboard:

Prerequisites

Before installing the Hubble Observer, ensure you have the following components installed in your Kubernetes cluster:

1. Hubble Relay

   • Required to connect to all Cilium pods and export the flows.

2. Grafana Operator

   • Required for deploying the Grafana dashboard. (you can disable this: grafanaDashboard.enabled=false)
   • Installation instructions: Grafana Operator Documentation

3. Loki

   • Required for log aggregation and querying
   • The Grafana dashboard uses LogQL queries
   • Installation instructions: Loki Documentation

The way it works is very straightforward: it uses the hubble container image which connects to the hubble relay and sends all flows to the stdout. Thats why you need a log collector which ships the logs to Loki.

Installation

helm upgrade --install hubble-observer oci://ghcr.io/onzack/hubble-observer:<VERSION>

Configuration

See values.yaml for configuration options.