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ExternalDNS

Synchronize Kubernetes services with DNS providers

Reverse Proxy & Gateways ★ 9.1k stars Medium setup Apache-2.0

ExternalDNS is an open-source Kubernetes controller that synchronizes exposed services and ingresses with external DNS providers. It automates DNS record management for self-hosted clusters.

Official siteSource code

Key features

  • Automatic DNS records
  • Many provider integrations
  • Ingress and service sync
  • Kubernetes native

Strengths

  • Released under the Apache-2.0 license
  • Kubernetes-ready with Helm charts available
  • Mature project with 9.1k GitHub stars
  • Written in Go

Is ExternalDNS secure?

OSV.dev has no published security advisories for ExternalDNS's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

ExternalDNS replaces

Self-hosted Route 53 manual records alternatives

Health badge

Maintain ExternalDNS? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 92 · excellent

Markdown
[![SelfHostIndex health score for ExternalDNS](https://selfhostindex.com/badge/external-dns.svg)](https://selfhostindex.com/app/external-dns/)
HTML
<a href="https://selfhostindex.com/app/external-dns/"><img src="https://selfhostindex.com/badge/external-dns.svg" alt="SelfHostIndex health score for ExternalDNS"></a>
reStructuredText
.. image:: https://selfhostindex.com/badge/external-dns.svg
   :alt: SelfHostIndex health score for ExternalDNS
   :target: https://selfhostindex.com/app/external-dns/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

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