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Let's Encrypt/ACME client and library written in Go https://go-acme.github.io/lego/
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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 Application‑Layer Protocol Negotiation (ALPN) Challenge Extension
    • Support RFC 8738: certificates for IP addresses
    • Support draft-ietf-acme-ari-02: 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 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.