2 months ago
Our backend service (AppGAS) in project 9c333718-e401-40e9-8021-562677dfe6b6d9 is returning 502 Bad Gateway errors.
The container deploys successfully, the server is listening on 0.0.0.0:8080, and all internal services (database, sync jobs) are operational. However, ZERO HTTP requests reach the application.
Evidence:
- Added request logging middleware at the first Express middleware layer
- When curling the endpoint, we get 502 but NO [HTTP] log entries appear
- Response header shows: x-railway-fallback: true
- Frontend service in same project/region works fine
We've tried:
- Switching from Nixpacks to Dockerfile
- Removing healthcheck config
- Verifying PORT=8080 binding
- Multiple redeploys
- All environment variables are correct
This appears to be a Railway edge proxy routing issue. The container is healthy but Railway's edge layer cannot route external traffic to it.
Pinned Solution
2 months ago
try checking your domain's target port setting. go to service settings → networking → public networking, click the edit icon next to your domain. make sure the target port matches 8080 (what your app is actually listening on)
3 Replies
2 months ago
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Status changed to Open brody • 2 months ago
2 months ago
try checking your domain's target port setting. go to service settings → networking → public networking, click the edit icon next to your domain. make sure the target port matches 8080 (what your app is actually listening on)
Status changed to Solved brody • 2 months ago
ilyassbreth
try checking your domain's target port setting. go to service settings → networking → public networking, click the edit icon next to your domain. make sure the target port matches 8080 (what your app is actually listening on)
2 months ago
You outperformed opus 4.5. Thank you sir.
Status changed to Awaiting Railway Response Railway • 2 months ago
Status changed to Solved brody • 2 months ago