# 既存のDiscourseインストールにセカンドドメインでLet's Encryptを設定

**URL:** https://meta.discourse.org/t/set-up-lets-encrypt-with-second-domain-for-existing-discourse-install/356661
**Category:** Support
**Tags:** letsencrypt
**Created:** [2025 年 3 月 10 日午後 5:14 UTC](https://meta.discourse.org/t/set-up-lets-encrypt-with-second-domain-for-existing-discourse-install/356661 "2025-03-10T17:14:41Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![NateDhaliwal](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/natedhaliwal/32/313494_2.png) [@NateDhaliwal](https://meta.discourse.org/u/NateDhaliwal)
#### Post date: [2025 年 3 月 10 日午後 11:15 UTC](https://meta.discourse.org/t/set-up-lets-encrypt-with-second-domain-for-existing-discourse-install/356661/3 "2025-03-10T23:15:02Z")

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これらのガイドをご覧ください。

> [@Change the domain name or rename your Discourse](https://meta.discourse.org/t/change-the-domain-name-or-rename-your-discourse/16098):
>
> bookmark This guide explains how-to change the domain name of your Discourse site, and includes information about setting up DNS changes, editing configuration files, updating site settings, and correcting social logins and post content to reflect your new domain name. warning This guide is for self-hosted Discourse instances that were installed using our [installation guide on GitHub](https://github.com/discourse/discourse/blob/master/docs/INSTALL-cloud.md). If you are [hosted by Discourse](https://www.discourse.org/pricing), please see [Configure your domain name for hosted Discourse](https://meta.discourse.org/t/configure-your-domain-name-for-hosted-discourse/21827) for specific …

> [@Set up HTTPS support with Let's Encrypt](https://meta.discourse.org/t/set-up-https-support-with-lets-encrypt/40709):
>
> bookmark This is a guide for enabling HTTPS on an existing Discourse installation using Let’s Encrypt. It assumes prior installation without HTTPS enabled. person_raising_hand Required user level: System Administrator exclamation This guide is only for existing installs where HTTPS is not enabled. Following the [official setup guide](https://github.com/discourse/discourse/blob/master/docs/INSTALL-cloud.md) automatically enables HTTPS by default. So you’d like to add https to your Discourse absolutely free, courtesy of our friends at [Let’s Encrypt?](https://letsencrypt.org/)bell I…

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