Cilium

Hubble API

The Hubble API is a gRPC-based observability API built on top of Cilium and eBPF that provides deep visibility into network flows, DNS queries, HTTP requests, and service communication within Kubernetes clusters. It exposes Observer and Peer gRPC services for querying flows, nodes, namespaces, and server status across single nodes or entire clusters via Hubble Relay.

GitHub

Documentation

📖
Documentation
https://docs.cilium.io/en/stable/observability/hubble/index.html

Specifications

⚙
AsyncAPI
https://raw.githubusercontent.com/api-evangelist/cilium/refs/heads/main/asyncapi/cilium-hubble-asyncapi.yml

SDKs

📦
GitHubRepository
https://github.com/cilium/hubble

Other Resources

🔗
Reference
https://docs.cilium.io/en/stable/internals/hubble/
🔗
Change Log
https://github.com/cilium/hubble/releases