When migrating (via backup) a Discourse from one hostname to another, an admin might want to keep the old hostname but have the web server rewrite requests to use the new canonical name, e.g.: https://old.example.org/t/my-great-topic/12345 :arrow_heading_down: https://new.example.org/t/my-great-to…

Update: Successfully configured the secondary domain name on the standalone installation, and issued a Let’s Encrypt certificate to handle both old and new names. Precondition: I did not yet change DNS to point folks over to the new site; I wanted things to be sure to work ahead of time. So I was u…

Not Discourse-specific, but when I need to redirect over HTTPS I just redirect everything. Meaning having a server doing the redirect from the old address to the new. Some hosting options take care of this in the background, sometimes called a “domain redirect” or “forwarding” service. I don’t even…

[afbeelding] downey: However, the Discourse configuration passes the Discourse hostname (only) to Let’s Encrypt, and there is no concept that I can see in the Discourse configuration for aliases. Discourse will only answer to one hostname. If you want more than one hostname - where your use c…

[afbeelding] michaeld: Discourse will only answer to one hostname. Actually if you’re using a single-instance-per-server Docker-based installation, it will answer fine to any number of DNS entries (nginx is listening on port 80 and 443 for all hostnames), and correctly rewrite the URL to the …

[afbeelding] downey: I would rather not have to maintain a separate web server just to do a rewrite rule, if possible You don’t need to, you just need an extra server section in your config.

This is a perfect application for a Cloudflare rule - zero server configuration. Just throw the same URL parameters at the new domain. The orange cloud will need to be enabled for the old domain name.

[afbeelding] Stephen: This is a perfect application for a Cloudflare rule - zero server configuration. Just throw the same URL parameters at the new domain. Yeah, a reverse proxy situation like Cloudflare (or I suppose your own reverse proxy of choice in front of your Discourse site) could wo…

Discourse + Let's Encrypt w/ multiple hostnames

Ondersteuning

pfaffman (Jay Pfaffman) 17 januari 2020 om 23:06 6

Maybe have a look at Setting up Let’s Encrypt with Multiple Domains

Topic		Antwoorden	Weergaven
Multiple hostnames for a single site for cut-over phase Self-hosting	3	540	31 augustus 2023
Making 'www' work with Discourse Support	30	2330	15 mei 2020
Set Up Let's Encrypt with Second Domain for Existing Discourse Install Support letsencrypt	5	231	11 maart 2025
LetsEncrypt working without www, not with www Support	12	1890	18 februari 2020
Set up Let’s Encrypt with multiple domains / redirects Sysadmins letsencrypt , how-to	112	20037	16 december 2025

Discourse + Let's Encrypt w/ multiple hostnames

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