Railway•13mo ago

New deploy crashing on pg_dump

I'm attempting to deploy a rails 6 app from GitLab into Railway. It's in api-only mode, and is backed with postgres. It also makes use of a structure.sql instead of the default schema.rb I keep getting this fatal error after the initial migrate task:

rake aborted!
failed to execute:
pg_dump --schema-only --no-privileges --no-owner --file /app/db/structure.sql railway
Please check the output above for any errors and make sure that `pg_dump` is installed in your PATH and has proper permissions.

rake aborted!
failed to execute:
pg_dump --schema-only --no-privileges --no-owner --file /app/db/structure.sql railway
Please check the output above for any errors and make sure that `pg_dump` is installed in your PATH and has proper permissions.

I'm also getting the following error directly below:

rake aborted!
ActiveRecord::NoDatabaseError: could not translate host name "postgres.railway.internal" to address: Name or service not known
...trace...
Caused by:
PG::ConnectionBad: could not translate host name "postgres.railway.internal" to address: Name or service not known

rake aborted!
ActiveRecord::NoDatabaseError: could not translate host name "postgres.railway.internal" to address: Name or service not known
...trace...
Caused by:
PG::ConnectionBad: could not translate host name "postgres.railway.internal" to address: Name or service not known

What I don't understand is that the initial table migration worked. All my tables have been built out in the postgres service. So the two services are talking to each other. Do I need to add a build command in the procfile to put pg_dump in the path? Am I missing anything simple? I'm happy to post the full traces - but they were turning my code blocks into attachments 🙃.

13 Replies

Percy•13mo ago

Project ID: 1e4b0651-0174-42a1-aac8-4081f16bb807

yrnsmthOP•13mo ago

1e4b0651-0174-42a1-aac8-4081f16bb807

Brody•13mo ago

are these errors coming from the build logs on railway?

yrnsmthOP•13mo ago

They're coming from the deploy logs, but yes, on railway

Brody•13mo ago

are you installing pg_dump?

yrnsmthOP•13mo ago

Not intentionally? I presumed it was a postgres extension? That's the impression I got trying to google the errors

Brody•13mo ago

haha railway isnt going to magically install pg_dump for you

yrnsmthOP•13mo ago

Right. Thing is, I don't recall installing into my local (though I could have - it was aaages ago that I switched to the schedule.sql) And I'm not sure how to install things into the environment - in Heroku I could access the dyno directly from my local terminal So do I do this as a build step?

Brody•13mo ago

add a nixpacks.toml to your project with this in it

[phases.setup]
  nixPkgs = ['...', 'postgresql']

[phases.setup]
  nixPkgs = ['...', 'postgresql']

yrnsmthOP•13mo ago

Oooh, righton. I'll lookup the documentation for nixpacks then. Thanks for your help!

Brody•13mo ago

https://nixpacks.com/docs/configuration/file but for now, just add that file as i have provided

yrnsmthOP•13mo ago

Thanks mate, much appreciated! Gotta get back to the day job (sorry, wasn't expecting a reply straight away 😆 )

Brody•13mo ago

haha no problem!

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New deploy crashing on pg_dump