Hello from a new hosted Discourse user. :wave: Problem statement: After install and setup, I changed the domain name after making all necessary changes. (Cloudflare DNS, app.yml, droplet hostname, new SSL certs, rebuilt docker, etc, etc, etc.) Everything worked fine Until: Activating S3 backups yields 500 error when visiting /admin/backups /admin/logs reports certificate verify mismatch (Hostname mismatch) Switching back to local backups and all works fine. Question: Where might the original hostname be hiding? I know you can’t tell me what I forgot so maybe you can enumerate where those settings reside. FYI: Seahorse::Client::NetworkingError (SSL_connect returned=1 errno=0 peeraddr=162.243.189.2:443 state=error: certificate verify failed (Hostname mismatch)) lib/s3_helper.rb:426:in `s3_bucket' lib/s3_helper.rb:240:in `list' lib/backup_restore/s3_backup_store.rb:122:in `unsorted_files' lib/backup_restore/backup_store.rb:23:in `files' app/controllers/admin/backups_controller.rb:24:in `block (2 levels) in index' app/controllers/admin/backups_controller.rb:13:in `index' app/controllers/application_controller.rb:412:in `block in with_resolved_locale' app/controllers/application_controller.rb:412:in `with_resolved_locale' lib/middleware/omniauth_bypass_middleware.rb:71:in `call' lib/content_security_policy/middleware.rb:12:in `call' lib/middleware/anonymous_cache.rb:368:in `call' config/initializers/100-quiet_logger.rb:23:in `call' config/initializers/100-silence_logger.rb:31:in `call' lib/middleware/enforce_hostname.rb:23:in `call' lib/middleware/request_tracker.rb:202:in `call' Domain change from bolderfounders.com to smarterfounders.com

Occams Razor Solved: At /admin/site_settings/category/files s3 endpoint should not include bucket name :person_facepalming: Pretty obvious in retrospect

Thank you Jay for the link. I hadn’t found that topic yet. :slight_smile: Based on your inputs and that linked topic, I have: Disabled Cloudflare and confirmed via DNSChecker.org my A records resolve to my DO droplet IP Doublechecked my app.yml (it was fine) Entered app container and ran discourse remap from old to new domain name and it made changes. To confirm, I ran it second time and it exited with no changes Used recursive grep looking inside and outside the app container for the old domain name and found nothing Rebuilt the app and studied the docker run command. Found no issues. Went into my admin and changed backup from local to S3 Continued to get the 500 error as before. :crying_cat_face: Changed back to local backup and everything was fine again. Enabled Cloudflare and confirmed it is proxying once again I am feeling stuck and am basically :man_shrugging:

Ghost hostname after hostname change

Product Support

pfaffman (Jay Pfaffman) October 9, 2022, 11:00am 2

See Change the domain name or rename your Discourse. Make sure cloudflare is dns only

Topic		Replies	Views
Our domain name changed, where do I edit the hostname? Product Support	7	5071	December 13, 2018
Create self-hosting clean Incomplete cleaning Self-hosting	2	165	November 24, 2025
We need help re-gaining access to our account Product Support	2	461	June 1, 2022
Can I upload discourse backup file to different domain address? Self-hosting backups	2	465	January 22, 2024
Configure your domain name for hosted Discourse Hosted Customers how-to	0	53305	November 4, 2014

Ghost hostname after hostname change

Related topics