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lego

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

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Features

  • 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
  • Comes with multiple optional DNS providers
  • Custom challenge solvers
  • Certificate bundling
  • OCSP helper function

lego introduced support for ACME v2 in v1.0.0. If you still need to utilize ACME v1, you can do so by using the v0.5.0 version.

Installation

How to install.

Usage

Documentation

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

DNS providers

Detailed documentation is available here.

Alibaba Cloud DNS Amazon Lightsail Amazon Route 53 Aurora DNS
Autodns Azure Bindman Bluecat
Checkdomain CloudDNS Cloudflare ClouDNS
CloudXNS ConoHa Constellix Designate DNSaaS for Openstack
Digital Ocean DNS Made Easy DNSimple DNSPod
Domain Offensive (do.de) DreamHost Duck DNS Dyn
Dynu EasyDNS Exoscale External program
FastDNS Gandi Live DNS (v5) Gandi Glesys
Go Daddy Google Cloud Hosting.de HTTP request
Internet Initiative Japan INWX Joker Joohoi's ACME-DNS
Linode (deprecated) Linode (v4) Liquid Web Manual
MyDNS.jp Name.com Namecheap Namesilo
Netcup NIFCloud NS1 Open Telekom Cloud
Oracle Cloud OVH PowerDNS Rackspace
reg.ru RFC2136 RimuHosting Sakura Cloud
Scaleway Selectel Servercow Stackpath
TransIP VegaDNS Versio.[nl/eu/uk] Vscale
Vultr Zone.ee Zonomi