Database Connection Error

ghoui
PROOP

2 months ago

Just tried to self host n8n with workers and when looking at my database.
I am getting this error
Database Connection

We are unable to connect to the database over the public network.

getaddrinfo ENOTFOUND postgres.railway.internal

how to resolve?

Solved$10 Bounty

0 Replies

Can you confirm that the service named postgres is up and running?


ghoui
PROOP

a month ago

1423379789032718600


We are unable to connect to the database over the public network

Actually, this implies it's trying over public with the private domain


Have you modified the template's variables? I'll have to look at what the potential variables are


a month ago

what does the red box say below the "Database Connection" ?


ghoui
PROOP

a month ago

1423380107975721000


a month ago

oh okay


a month ago

In this context, the n8n template sets up the variables on the Postgres database slightly incorrectly, and then it inadvertently results in this error.


ghoui
PROOP

a month ago

DATABASE_URL="postgres://${{POSTGRES_USER}}:${{POSTGRES_PASSWORD}}@${{PGHOST}}:${{PGPORT}}/${{POSTGRES_DB}}"
PGDATA="/var/lib/postgresql/data/pgdata"
PGDATABASE="${{POSTGRES_DB}}"
PGHOST="${{RAILWAY_PRIVATE_DOMAIN}}"
PGPASSWORD="${{POSTGRES_PASSWORD}}"
PGPORT="5432"
PGUSER="${{POSTGRES_USER}}"
POSTGRES_DB="railway"
POSTGRES_PASSWORD="YbgRNWjKDhMOKrF5HsS5zSAwBssSPwl~"
POSTGRES_USER="railway"
SSL_CERT_DAYS="820"

Ooop please don't share your postgres password :P


ghoui
PROOP

a month ago

my bad sorry this is my first time when it comes to hosting


ghoui
PROOP

a month ago

not really experienced in devops


a month ago

That password is now permanently public.


ghoui
PROOP

a month ago

🤦 sorry.


ghoui
PROOP

a month ago

Do i have to redoploy the templates again?


I'm deploying the template myself to see if I can find the issue


ghoui
PROOP

a month ago

I see.


You're seeing these logs in the worker container? Or in the interface?


ghoui
PROOP

a month ago

Railway interface I am seeing that error.


ghoui
PROOP

a month ago

For example

1423381667761881000


ghoui
PROOP

a month ago

even on my redis I have this issue.


Works fine for me with no modifications <:hmm_noted:1383623507509903420>

Are you using the first template that shows up when you search n8n?

Redis shouldn't even have the REDIS_PASSWORD with my deployment.

1423381890487812400



ghoui
PROOP

a month ago

The only modification as you can see I followed that required variable to put it in redis. I have put in a random string


ghoui
PROOP

a month ago

That is correct that is the one.


a month ago

Who's in your PFP


ghoui
PROOP

a month ago

uhh not to be rude


ghoui
PROOP

a month ago

but how does this help resolve our current issue. <:AE_confused:864885656638980117>


I see your issue now. 1 sec.


a month ago

I was curious 🙁


Your issue won't actually cause issues with N8N I believe, just the built in UI


ghoui
PROOP

a month ago

Oh I see.


ghoui
PROOP

a month ago

In my n8n flows I do plan on using the DB itself. Should it work if I provided the correct connection string?


a month ago

Please don't use N8N's own database in your flows, the database the template deploys with is for N8N to use internally.


ghoui
PROOP

a month ago

Oh make sense.


But just in case you do want to view it:

DATABASE_PUBLIC_URL="postgresql://${{PGUSER}}:${{POSTGRES_PASSWORD}}@${{RAILWAY_TCP_PROXY_DOMAIN}}:${{RAILWAY_TCP_PROXY_PORT}}/${{PGDATABASE}}"

You can create that variable and the UI will work.


ghoui
PROOP

a month ago

Amazing!


ghoui
PROOP

a month ago

Thank you Gentlemen.


Out of curiosity, why does Railway even try the internal domain? Is DATABASE_URL the backup to DATABASE_PUBLIC_URL?

-# Wow I really cannot spell today


a month ago

Correct.


a month ago

Historical context would be that DATABASE_URL used to be the public url


a month ago

So for very old database deploys, the data tab will still work.


ghoui
PROOP

a month ago

Before I close this thread. Buckets are currently out but for Feature Flags. Does that mean there some techinical bugs to be fixed before full deployment or is just looking feedback from the community?


I believe both of those but Brody will have a better response


It's fairly stable but I wouldn't recommend putting any production apps on it (yet) because it's technically "subject to change"


a month ago

Besides having to use path style syntax, and there not being any billing for it yet, there are no known technical issues.


a month ago

But of course, beta is beta, so what Sam said.


ghoui
PROOP

a month ago

Great.
Thank you both Sam and Brody. I hope you guys have a great evening/night.


a month ago

So who is the PFP? 🙂


ghoui
PROOP

a month ago

The Eminence in Shadow - Beta Season 2 Episode 09 14:02.


a month ago

Knew it looks familiar.


a month ago

All the best devs have an anime PFP


Status changed to Solved brody about 2 months ago


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Database Connection Error - Railway Help Station