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go-acme/lego - Automated ACME/Let's Encrypt Client and Library in Go
A feature-rich and extensible ACME client library and command-line tool written in Go, automating the process of obtaining and renewing TLS/SSL certificates from ACME providers like Let's Encrypt.
Go
Added on 2025年5月12日8,549
Stars1,067
ForksGo
LanguageProject Introduction
Summary
lego is a powerful and easy-to-use client and library for the ACME protocol, implemented in Go. It's designed to automate the interaction with ACME certificate authorities like Let's Encrypt to secure your websites and services with minimal effort.
Problem Solved
Managing TLS/SSL certificates manually is a time-consuming and error-prone process. lego automates certificate issuance and renewal via the ACME protocol, simplifying server administration and improving security by ensuring certificates are always up-to-date.
Core Features
Wide Provider Support
Supports numerous DNS, HTTP, and TLS-ALPN challenge providers out-of-the-box, making it compatible with diverse hosting environments.
Flexible Usage (CLI/Library)
Can be used as a standalone command-line tool for easy automation or integrated as a Go library into your own applications.
Automated Certificate Management
Handles the entire certificate lifecycle, including obtaining, renewing, and revoking certificates.
Tech Stack
Go
ACME Protocol
TLS/SSL
DNS
HTTP
Use Cases
lego is versatile and can be applied in various scenarios where automated certificate management is beneficial:
Automating Web Server Certificates
Details
Automate obtaining and renewing SSL certificates for web servers (like Caddy, Nginx, Apache) hosting multiple domains.
User Value
Ensures websites remain secure with up-to-date certificates without manual intervention, preventing expiration outages.
Integrating into Custom Applications/Platforms
Details
Integrate lego as a library into custom services or platforms that provision domains or host content, automatically securing newly added sites.
User Value
Adds automated SSL capabilities to your own software, providing a seamless experience for users or internal operations.
Containerized and Scripted Environments
Details
Use the CLI tool in scripts or container orchestration systems (like Kubernetes, Docker Swarm) to manage certificates for dynamic environments.
User Value
Simplifies certificate management in ephemeral or dynamically scaled infrastructures.
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