EDIT: Well, it took me 18 hours, but it seems that defining DISCOURSE_CDN_URL keeps (at least) this site from rebuilding and/or functioning after a restore. I guess the next thing to test is doing a build without DISCOURSE_CDN_URL and then cranking up the container with the ENV var set. What I knew…

@pfaffman I’ve just stumbled across this exact same issue after battling through my other problems when trying to set up S3. Did you ever find out what was causing this?

Fixed it. Make sure you prepend your CDN url with http:// :facepalm: So instead of DISCOURSE_CDN_URL=your-cdn-url.com it should be DISCOURSE_CDN_URL=http://your-cdn-url.com. Only 2 hours wasted debugging it :smiley:

Hmm can we add some kind of warning here @eviltrout so people don’t run into this in the future?

This will pop up a warning if you don’t add a protocol: https://github.com/discourse/discourse/commit/9ab2a15691de4c280e234be8d50b0526b657db83

GlobalSetting is the object that takes your ENV variables into Discourse, so if you do it that way the warning should also appear.

[image] pfaffman: But bozos (like me) who do this with ENV variables I too feel pretty silly for falling into this trap! :laughing:

If I’m remembering correctly, I lost 18 hours on it during what was supposed to be a Christmas break. :frowning_face:

DISCOURSE_CDN_URL breaks rebuild/restore

Product Support

pfaffman (Jay Pfaffman) March 5, 2020, 8:41pm 6

But bozos (like me) who do this with ENV variables will still have trouble. Is there a downside to printing the warning and prepending https://?

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Aborting! CDN must have a protocol specified Product Support	6	1083	May 20, 2019
Assets not serving from CDN in latest update Product Support	16	2039	February 7, 2020
Remove DISCOURSE_CDN_URL Self-hosting cdn	2	544	April 15, 2020
Cannot rebake after setting up CDN Self-hosting unsupported-install	17	1707	March 19, 2021
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DISCOURSE_CDN_URL breaks rebuild/restore

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