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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 ApplicationLayer 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
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 Mail-in-a-Box
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 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.