Railway Domain Issue

a month ago

I created a new Next.js project and it was given a domain automatically (domain.up.railway.app). After deployment, I changed the domain to newdomain.up.railway.app. It updated the settings UI and the app is accessible on the internet via the new domain, but the deployment ui still shows the old one and the PUBLIC_URL environmental variable still hasn't updated.

I've already redeployed.

Project ID: bd0601f5-0970-407b-b42b-da5f6fad7cf4

27 Replies

a month ago

Feel free to ping me if you reply.


a month ago

did you remove the old domain after creating the new domain?


a month ago

I replaced it. The networking tab in settings only displays one domain.

Screenshot_2026-04-28_at_4.54.34_PM.png

Attachments


a month ago

fcsbeta.up.railway.app is the new domain


a month ago

For the service variable PUBLIC_DOMAIN you need to redeploy, did you redeploy since provisioning the new domain?


a month ago

yes


a month ago

this is the deploy ui for the same service as the previous screenshot

Screenshot_2026-04-28_at_5.00.35_PM.png

Attachments


a month ago

as you can see, it shows the same unchanged domain


a month ago

alright let me see if I can reproduce


a month ago

I created a next.js service, added a postgres database (at which point the next.js service disappeared from the ui completely until i reloaded -- im assuming a bug), added environmental variables to the next.js service, then deployed all changes and the services started deploying for the first time (the postgresql db was provisioned when I added the service -- but not deployed).

After both services were deployed, I modified the given public url and redeployed. It updated in the settings/networking UI but not in the deployment UI or the ${{RAILWAY_PUBLIC_DOMAIN}} env var


a month ago

I deployed a service, with a default domain provisioned, and then I visited that domain

after I changed the domain name to something else, and deployed changes, which resulted in both the variable and the domain on the ui changing

meaning to say I can't reproduce this

can you check if the site is still running on the old domain / not running on the new domain? trying to see if this is a UI issue or not


a month ago

The site is successfully running on the new domain.

When I visit the old domain (as displayed in the deployment ui), I am met with this page:

Screenshot_2026-04-28_at_5.08.50_PM.png

Attachments


a month ago

interesting, so it's just a UI bug then, weird


a month ago

what browser are you using?


a month ago

I'm using Zen - a firefox based browser. I'll check in a different browser


a month ago

alright, sounds good, thank you for checking


a month ago

I just tried in Arc and its still showing the wrong URL


a month ago

I don't believe that its solely ui as the ${{RAILWAY_PUBLIC_DOMAIN}} environmental variable resolves to the incorrect domain.


a month ago

even in the running deployment?


a month ago

yes


a month ago

meaning the deployment sees it as being the old domain and not the new domain?


a month ago

I believe so. I'll double check


a month ago

thank you 🙏


a month ago

Yes. I just confirmed.


a month ago

I'm stepping away from my laptop and won't be able to respond for a while. Let me know if theres anything I can do to help.


a month ago

Alright, I'll share this thread around and see if we're maybe overlooking something, otherwise I'll inform the team of this issue


a month ago

when you're back, can you try changing the domain again? maybe the previous change didn't propagate or something


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