/lego

Let's Encrypt/ACME client and library written in Go

Primary LanguageGoMIT LicenseMIT

lego logo

Automatic Certificates and HTTPS for everyone.

Lego

Let's Encrypt client and ACME library written in Go.

Go Reference Build Status Docker Pulls

Features

  • ACME v2 RFC 8555
    • Support RFC 8737: TLS Application‑Layer Protocol Negotiation (ALPN) Challenge Extension
    • Support RFC 8738: certificates for IP addresses
    • Support draft-ietf-acme-ari-03: Renewal Information (ARI) Extension
  • Register with CA
  • Obtain certificates, both from scratch or with an existing CSR
  • Renew certificates
  • Revoke certificates
  • Robust implementation of all ACME challenges
    • HTTP (http-01)
    • DNS (dns-01)
    • TLS (tls-alpn-01)
  • SAN certificate support
  • CNAME support by default
  • Comes with multiple optional DNS providers
  • Custom challenge solvers
  • Certificate bundling
  • OCSP helper function

Installation

How to install.

Usage

Documentation

Documentation is hosted live at https://go-acme.github.io/lego/.

DNS providers

Detailed documentation is available here.
Akamai EdgeDNS Alibaba Cloud DNS all-inkl Amazon Lightsail
Amazon Route 53 ArvanCloud Aurora DNS Autodns
Azure (deprecated) Azure DNS Bindman Bluecat
Brandit Bunny Checkdomain Civo
Cloud.ru CloudDNS Cloudflare ClouDNS
CloudXNS ConoHa Constellix CPanel/WHM
Derak Cloud deSEC.io Designate DNSaaS for Openstack Digital Ocean
DirectAdmin DNS Made Easy dnsHome.de DNSimple
DNSPod (deprecated) Domain Offensive (do.de) Domeneshop DreamHost
Duck DNS Dyn Dynu EasyDNS
Efficient IP Epik Exoscale External program
freemyip.com G-Core Gandi Live DNS (v5) Gandi
Glesys Go Daddy Google Cloud Google Domains
Hetzner Hosting.de Hosttech HTTP request
http.net Huawei Cloud Hurricane Electric DNS HyperOne
IBM Cloud (SoftLayer) IIJ DNS Platform Service Infoblox Infomaniak
Internet Initiative Japan Internet.bs INWX Ionos
IPv64 iwantmyname Joker Joohoi's ACME-DNS
Liara Lima-City Linode (v4) Liquid Web
Loopia LuaDNS Mail-in-a-Box Manual
Metaname mijn.host Mittwald MyDNS.jp
MythicBeasts Name.com Namecheap Namesilo
NearlyFreeSpeech.NET Netcup Netlify Nicmanager
NIFCloud Njalla Nodion NS1
Open Telekom Cloud Oracle Cloud OVH plesk.com
Porkbun PowerDNS Rackspace RcodeZero
reg.ru RFC2136 RimuHosting Sakura Cloud
Scaleway Selectel v2 Selectel Servercow
Shellrent Simply.com Sonic Stackpath
Tencent Cloud DNS TransIP UKFast SafeDNS Ultradns
Variomedia VegaDNS Vercel Versio.[nl/eu/uk]
VinylDNS VK Cloud Vscale Vultr
Webnames Websupport WEDOS Yandex 360
Yandex Cloud Yandex PDD Zone.ee Zonomi

If your DNS provider is not supported, please open an issue.