/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-01: 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 Derak Cloud
deSEC.io Designate DNSaaS for Openstack Digital Ocean 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 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 Linode (v4) Liquid Web
Loopia LuaDNS Manual Metaname
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 Servercow
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.