Hubble

Spec sheet

Purpose

Hubble is a distributed networking and security observability platform built on Cilium and eBPF.Read 1 Oct 2026 · docs.cilium.io

Integrations

Cilium documentation describes metrics and alerting integration with Prometheus, Grafana, and other monitoring systems.Read 1 Oct 2026 · docs.cilium.io

Maker

Cilium was originally created by Isovalent.Read 1 Oct 2026 · cilium.io

CLI

The Hubble CLI can connect to Hubble Relay or a local server to retrieve flow events.Read 1 Oct 2026 · docs.cilium.io

Cluster visibility

Hubble Relay connects to Hubble instances to provide visibility across a cluster or across multiple clusters in a ClusterMesh scenario.Read 1 Oct 2026 · docs.cilium.io

Flow visibility

Hubble provides network flow visibility with identity and label metadata, DNS-aware filtering, and protocol-specific insights.Read 1 Oct 2026 · docs.cilium.io

Platform support

The Hubble CLI installation guide provides downloads for Linux, macOS, and Windows.Read 1 Oct 2026 · docs.cilium.io

Requirements

Hubble observability requires Cilium to be installed, and only pods managed by Cilium are observable by Hubble.Read 1 Oct 2026 · docs.cilium.io

Sensitive data

Layer 7 flow data is not redacted by default; Cilium provides options to redact HTTP query parameters, URL user information, and headers.Read 1 Oct 2026 · docs.cilium.io

Service maps

Hubble UI provides a graphical service map for viewing service dependencies and recent flow events.Read 1 Oct 2026 · docs.cilium.io

Transport security

When Hubble APIs are exposed over TCP, connections between Hubble instances and Relay are secured with mutual TLS by default.Read 1 Oct 2026 · docs.cilium.io

Troubleshooting

Hubble can help identify whether failed communication is caused by DNS, an application, or a network problem at Layer 4 or Layer 7.Read 1 Oct 2026 · docs.cilium.io

Plans and prices

Every Hubble plan and price →

Where Specifiction places it

• Distributed Tracing Tools#16 of 327.8