Railway•11mo ago

Unable to deploy a Node application

Hi, I've been trying to deploy a simple Medusa.js app to Railway for quite some time. I wasn't successful. Another dev working with me unfortunately met the same fate. There's very little documentation on Railway, and none for mounts for using Dockerfile. [Region: us-west1] Cache mount ID is not prefixed with cache key I'm an experienced developer. I usually host on AWS, but I wanted to try something new. What is cache mount id prefix? What's cache key? Thank you

108 Replies

Percy•11mo ago

Project ID: 26dc4f5f-e728-4eb9-aaf6-126e6e687fed

hexrwOP•11mo ago

26dc4f5f-e728-4eb9-aaf6-126e6e687fed

Brody•11mo ago

i take it you are deploying from a Dockerfile?

hexrwOP•11mo ago

Yes I also tried deploying using NIX but I don't have the skillset necessary Also I'm sorry for my tone I'm just very tired

Brody•11mo ago

send your Dockerfile please thank you for that, but please going forward try to keep a cool tone

hexrwOP•11mo ago

Dockerfile for the app: https://pastebin.com/rz8CuwBM

Pastebin

syntax=docker/dockerfile:1# Comments are provided throughout this...

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Brody•11mo ago

first off, where you able to deploy your app without any of the cache mount stuff?

hexrwOP•11mo ago

I used https://docs.medusajs.com/create-medusa-app to create the project and docker init (Docker desktop) to create the Dockerfile template. I'm using PNPM. The project build locally, the container also builds locally from the Dockerfile. I can verify it runs fine outside of Railway

Install Medusa with create-medusa-app | Medusa

Learn how to create a composable commerce platform using Medusa. This quickstart guide will help you set up your Medusa backend and the admin dashboard.

hexrwOP•11mo ago

No it resulted in package.json missing despite being present I would very much like to keep the cache mounts But I can switch to just copying all the project files and try that. I tried modyfing the code and running it without the mounts, tried a couple variants. But I'm not a docker expert Railway returns very concise error messages or doesn't return any at all. When I try just copying the files instead of cache mounts, it doesn't say anything just build failed

Brody•11mo ago

railway does not support the bind mount type, i know that its sometimes recommended to do that vs copying in the file, but the gains are negligible at best

hexrwOP•11mo ago

I found a discussion saying that it does, that's what confused me the most https://www.answeroverflow.com/m/1104400912149123152

Cache mount ID is not prefixed with cache key when deploying test i...

Hello all, today I tried to boot up my test instance but every attempt at doing so lead the deploys to fail immediately with the error Cache mount ID is not prefixed with cache key (no further information are present in build logs). The Dockerfile used to build the project is the following (as copied from GitHub https://github.com/Stickerifie...

hexrwOP•11mo ago

<1104400912149123152/1108081571665281085>

Brody•11mo ago

im sorry but im not seeing where its mentioned that the bind mount type is supported, im only seeing talk about the cache mount type

hexrwOP•11mo ago

Alright. What is confusing me is that it only complains about Cache ID When I remove cache mounts and keep bind mounts still says Cache mount ID is not prefixed with cache key

Brody•11mo ago

bind mounts are not supported, lets get this dockerfile working without any mounts first please one step at a time instead of bind mounts, copy the file in with COPY COPY package.json pnpm-lock.yaml ./

hexrwOP•11mo ago

Is it possible to run railway up using local code not the github repository? I have like 20 commits just for today

Brody•11mo ago

yep thats exactly what its for

hexrwOP•11mo ago

I though so but it only seems to redeploy once I push the changes to the repository?

Brody•11mo ago

and just for a future question to get it out of the way, in your Dockerfile you have <service-id> but you are replacing that with your actual service id right?

hexrwOP•11mo ago

I may have possibly misconfigured the environments but still Yes I tried both in case railway had some magic regex replacement

Brody•11mo ago

railway up will deploy the code from your local project that you are running railway up from they dont, though i have asked long ago for it

hexrwOP•11mo ago

At least it should be in an environment variable Or passed as an argument

Brody•11mo ago

there is a service id environment variable, but theres no way to dynamically replace it within the dockerfile

hexrwOP•11mo ago

Oh okay, good to know though Possibly NIX would be able to pass the value to the Dockerfile and then build it

Brody•11mo ago

thats what it does do

hexrwOP•11mo ago

Why can't I use it then ${SERVICE_ID}

Brody•11mo ago

you arent using nixpacks, you are using a dockerfile

hexrwOP•11mo ago

How does Railway build the dockerfile

Brody•11mo ago

buildx is what i think they use

hexrwOP•11mo ago

oh okay

Brody•11mo ago

nixpacks is not involved when a dockerfile is used

hexrwOP•11mo ago

Okay Maybe they could release the config somewhere so I could test locally For docker build

Brody•11mo ago

but nixpacks does generate an intermediary dockerfile with the correct cache id automatically

hexrwOP•11mo ago

Oh okay that sounds interesting at least

Brody•11mo ago

but you said you didnt have any luck with nixpacks

hexrwOP•11mo ago

I removed the bind mounts

Brody•11mo ago

did you remove all mount types?

hexrwOP•11mo ago

Yes because I have no experience with it. Also Medusa is kind off specific

Brody•11mo ago

can you send your new dockerfile?

hexrwOP•11mo ago

Okay so I was able to build including the cache mounts now

hexrwOP•11mo ago

Updated Dockerfile https://pastebin.com/KrAhE25e

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Brody•11mo ago

some of your stages are missing a WORKDIR, but otherwise looks fine

hexrwOP•11mo ago

Damn. I was using the Dockefile generated by docker init didn't bother to review those parts properly Still the deploy failed Build succeeded Do you think you could help me with binding ports please

Brody•11mo ago

i assume you are getting a 503 error?

hexrwOP•11mo ago

My app runs on 9000 and the port is exposed. I am using a custom domain and I have it configured correctly No because it failed right after it deployed

Brody•11mo ago

logs please https://bookmarklets.up.railway.app/log-downloader/

hexrwOP•11mo ago

I've set up a health check, medusa has a health check on base-url/health Here's the Railway config for reference

[build]
builder = "DOCKERFILE"
nixpacksPlan = {"repo":"webspen/lafat"}
watchPatterns = ["packages/medusa/**/*"]
dockerfilePath = "packages/medusa/Dockerfile"

[deploy]
region = "us-west1"
numReplicas = 1
startCommand = "medusa migrations run && npm run start:server"
healthcheckPath = "/health"
sleepApplication = false
restartPolicyType = "ALWAYS"
healthcheckTimeout = 10

[build]
builder = "DOCKERFILE"
nixpacksPlan = {"repo":"webspen/lafat"}
watchPatterns = ["packages/medusa/**/*"]
dockerfilePath = "packages/medusa/Dockerfile"

[deploy]
region = "us-west1"
numReplicas = 1
startCommand = "medusa migrations run && npm run start:server"
healthcheckPath = "/health"
sleepApplication = false
restartPolicyType = "ALWAYS"
healthcheckTimeout = 10

Brody•11mo ago

some of that isnt valid syntax but please send the logs

hexrwOP•11mo ago

Build and deploy logs here https://pastebin.com/P5DyPb9r

Pastebin

[Region: us-west1]=========================Using Detected Dockerfil...

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Brody•11mo ago

can you please configure your app to listen on the PORT environment variable that is automatically generated by railway

hexrwOP•11mo ago

Networking config Can I use that in the Dockerfile though? So that I could EXPOSE it

Brody•11mo ago

there no need to

hexrwOP•11mo ago

Okay I suppose it will expose it automatically?

Brody•11mo ago

quite a misleading name EXPOSE does nothing to expose the port, it is purely informative

hexrwOP•11mo ago

Oh okay then hm weird

const port = process.env.PORT ?? configModule.projectConfig.port ?? 9000

const port = process.env.PORT ?? configModule.projectConfig.port ?? 9000

The app should already use the env PORT variable But it seems it falls back to 9000

Brody•11mo ago

maybe thats evacuated during build when no PORT env exists, you can just set a PORT service variable in that case

hexrwOP•11mo ago

Wdym PORT service var? Most probably yes

Brody•11mo ago

a service variable, named PORT https://docs.railway.app/guides/variables#service-variables

hexrwOP•11mo ago

Yes but what value should I use. 9000?

Brody•11mo ago

yes

hexrwOP•11mo ago

Deploying now Still the same issue Health check failed

Brody•11mo ago

is your app listening on 0.0.0.0?

hexrwOP•11mo ago

No it's listening on the custom domain It's using a config variable for that

Brody•11mo ago

it needs to listen on 0.0.0.0

hexrwOP•11mo ago

Alright. I hope it won't complain Is it possible to disable those automatic redeployments everytime I change the service variables

Brody•11mo ago

click cancel on the popup

hexrwOP•11mo ago

Damn okay Also the health checks are running too soon, before the app fully loads But they have a timeout long enough I will disable them for now But I would like to somehow delay them

Brody•11mo ago

i dont see a point in delaying them, they will run for 5 minutes

hexrwOP•11mo ago

okay

Brody•11mo ago

if a few checks fail before your app is live thats totally fine

hexrwOP•11mo ago

I may have another issue With CORS I don't know how Railway proxies the traffic To the container I will set all CORS to * for now But it is a security risk

Brody•11mo ago

railway sets the host header likey any proxy would https://utilities.up.railway.app/raw

Host: utilities.up.railway.app

hexrwOP•11mo ago

Okay I hope so X-Forwarded-For present that's a good sign I had configured nginx this way and it worked so it should work just fine now

Brody•11mo ago

yep, standard proxy stuff, nothing special

hexrwOP•11mo ago

Also the app is running with express, thought I should mention that Standard config nothing too special

Brody•11mo ago

https://docs.railway.app/guides/fixing-common-errors#node--express

hexrwOP•11mo ago

deploying with 0.0.0.0 Still no luck damn

Publish time: 28.32 seconds
====================
Starting Healthcheck
Path: /health
Retry window: 10s

Attempt #1 failed with service unavailable. Continuing to retry for 9s
[FATAL tini (7)] exec medusa failed: No such file or directory
[FATAL tini (7)] exec medusa failed: No such file or directory
[FATAL tini (6)] exec medusa failed: No such file or directory
[FATAL tini (7)] exec medusa failed: No such file or directory
Attempt #2 failed with service unavailable. Continuing to retry for 8s
[FATAL tini (7)] exec medusa failed: No such file or directory
Attempt #3 failed with service unavailable. Continuing to retry for 3s

1/1 replicas never became healthy!
Healthcheck failed!
[FATAL tini (7)] exec medusa failed: No such file or directory
Build failed

Publish time: 28.32 seconds
====================
Starting Healthcheck
Path: /health
Retry window: 10s

Attempt #1 failed with service unavailable. Continuing to retry for 9s
[FATAL tini (7)] exec medusa failed: No such file or directory
[FATAL tini (7)] exec medusa failed: No such file or directory
[FATAL tini (6)] exec medusa failed: No such file or directory
[FATAL tini (7)] exec medusa failed: No such file or directory
Attempt #2 failed with service unavailable. Continuing to retry for 8s
[FATAL tini (7)] exec medusa failed: No such file or directory
Attempt #3 failed with service unavailable. Continuing to retry for 3s

1/1 replicas never became healthy!
Healthcheck failed!
[FATAL tini (7)] exec medusa failed: No such file or directory
Build failed

Brody•11mo ago

healthcheck is removed?

hexrwOP•11mo ago

No I will remove it now

Brody•11mo ago

medusa failed: No such file or directory

hexrwOP•11mo ago

Originates from project config medusa migrations run && npm run start:server

Brody•11mo ago

are you installing medusa?

hexrwOP•11mo ago

I just need to add it to the path it is installed by pnpm Or prefix it with pnpm

Brody•11mo ago

yeah whatever the equivalent to npx is for pnpm

hexrwOP•11mo ago

Weird though because locally it worked, I probably don't need a start command at all pnpx but that behaves weird

Brody•11mo ago

you may have it installed globally locally?

hexrwOP•11mo ago

No only as a dev dep in the project pnpm maybe does some unseen magic

# Dockerfile
CMD pnpm start

# Dockerfile
CMD pnpm start

# Config
[deploy]
startCommand = ...

# Config
[deploy]
startCommand = ...

this is the issue When not using NIX I don't probably need a start command right? This is probably why it fails before a health check is sucessfull even

Brody•11mo ago

the start command you set in your config file does overwrite the CMD in the dockerfile

hexrwOP•11mo ago

oh okay weird though simplified the start command "start": "NODE_ENV=production && node dist/main.js", pnpm start should all work now

Brody•11mo ago

famous last words

hexrwOP•11mo ago

removed the health checks for now too debugging is removing stuff until it's just a skeleton and then even that breaks

Brody•11mo ago

process of elimination works wonders, most of the time lol

hexrwOP•11mo ago

"all that's left now is to push" "I will just merge this PR and I'm done" "wow this script will really set everything up for me and definitely not break anything" "I just refactored a simple function" those are all my last words "let me just run this migration" I removed the start command and somehow it came back? oh okay the redeploy used code from the repo it seems to work now I will test it

Brody•11mo ago

sounds good

hexrwOP•11mo ago

Okay now it fails but Railway doesn't know that :D I am unable to load the env variables inside the app

Brody•11mo ago

have you set the appropriate service variables?

hexrwOP•11mo ago

Yes

Brody•11mo ago

I don't see a jwt service variable?

hexrwOP•11mo ago

okay my bad but the db didn't seem to load either I need to review the config

Brody•11mo ago

what makes you think that? from my perspective it exited before any database related stuff happened

hexrwOP•11mo ago

I have a Vercel integration and vercel has those vars but it doesn't sync both ways probably only to vercel

Brody•11mo ago

yeah it's only railway to vercel, not bidirectional

hexrwOP•11mo ago

Is it possible to make the deployment fail if the app throws errors like this?

Brody•11mo ago

you would need it to exit with an error code of 1. yes I see the logs that say it did, but if the status is complete then it did not exit with 1

hexrwOP•11mo ago

Okay I will make it exit with 1 ON any errors Alright it works now Thank you very much for your time

Brody•11mo ago

no problem!

hexrwOP•11mo ago

If you need help with Vue or TypeScript or SST, AWS feel free to reach out to me

Brody•11mo ago

and if you need help with railway, you know where to find me oh and next time, don't wait 2 days!

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Unable to deploy a Node application