Hubble Relay API

The Hubble Relay API is a gRPC service that aggregates and relays network flow data from multiple Hubble agents running across Kubernetes cluster nodes. It provides a single cluster-wide endpoint for the Hubble Observer service, enabling centralized queries of flow data, DNS events, and HTTP metrics from all nodes through Hubble Relay without connecting to each node individually.

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API entry from apis.yml

apis.yml Raw ↑
aid: cilium:hubble-relay-api
name: Hubble Relay API
tags:
- gRPC
- Kubernetes
- Networking
- Observability
humanURL: https://docs.cilium.io/en/stable/observability/hubble/index.html
properties:
- url: https://docs.cilium.io/en/stable/observability/hubble/index.html
  type: Documentation
- url: https://github.com/cilium/cilium/tree/main/api/v1/relay
  type: Reference
- url: https://github.com/cilium/cilium
  type: GitHubRepository
- url: https://github.com/cilium/cilium/releases
  type: ChangeLog
description: The Hubble Relay API is a gRPC service that aggregates and relays network flow data from
  multiple Hubble agents running across Kubernetes cluster nodes. It provides a single cluster-wide endpoint
  for the Hubble Observer service, enabling centralized queries of flow data, DNS events, and HTTP metrics
  from all nodes through Hubble Relay without connecting to each node individually.