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hyperdht-prometheus-bridge

v2.1.1

Published

Bridge to scrape Prometheus metrics fully peer to peer

Downloads

31

Vulnerabilities

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Links

Git

Maintainers

mafintoshmafintosh

Keywords

Prometheusdhthyperdhtpeer-to-peerp2p

Readme

hyperdht-prometheus-bridge

A bridge to scrape Prometheus metrics from self-registering services, all using direct, end-to-end encrypted peer-to-peer connections (not http).

Service discovery is done with a decentralised hash table (HyperDHT). This means that both this service and the clients it scrapes can live behind a firewall and need no reverse proy nor DNS entries.

An advantage is the small amount of configuration required. Clients register themselves with the hyperdht-prometheus-bridge service, so no manual list of targets needs to be maintained. All a client needs to register itself, is the hyperdht-prometheus-bridge service's public key, and a shared secret.

Deployment

hyperdht-prometheus-bridge is meant to be deployed alongside Prometheus. It manages a single targets.json file referenced from the main prometheus configuration (See prometheus/prometheus.yml for an example).

The hyperdht-prometheus-bridge service fulfils two complementary roles:

  • It maintains a targets.json file with aliases to all services which Prometheus should scrape.
  • It provides an HTTP server which receives Prometheus requests and forwards them to the instances of hyperdht-prometheus-client.

Run

Configuration is done through environment variables:

  • HYPERDHT_PROM_KEY_PAIR_SEED: 32-byte seed passed to HyperDHT.keyPair(), set as hex or z32. Set this to have a consistent public key (otherwise random, which is only useful for tests).
  • HYPERDHT_PROM_SHARED_SECRET: 32-byte secret key, set as hex or z32.
  • HYPERDHT_PROM_LOG_LEVEL: defaults to info
  • HYPERDHT_PROM_HTTP_PORT: port where the http server listens. Defaults to a random port.
  • HYPERDHT_PROM_HTTP_HOST: host where the http server listens. Defaults to 127.0.0.1

CLI

Install:

npm i -g hyperdht-prometheus-bridge

Run:

HYPERDHT_PROM_PROMETHEUS_TARGETS_LOC=path/to/prometheus/targets.json HYPERDHT_PROM_HTTP_PORT=30000 HYPERDHT_PROM_SHARED_SECRET=<A 64 character hex string> hyperdht-prometheus-bridge

Test

npm test

Integration tests are also included:

npm run integration

Note: the integration tests run ./prep-integration-test.sh, which downloads Prometheus and copies the executable to the ./prometheus directory.

Fork

Forked on 2026-06-17 from https://gitlab.com/dcent-tech/dht-prometheus/, licensed under Apache-2.0. See NOTICE.