Railway•10mo ago

Sidekiq worker repeatedly crashing after deploy with "Connection refused... for 127.0.0.1:6379"

Project ID: 2637570f-afaf-462c-887b-912303121dfd Service: 63bb6b2e-042f-443b-a46c-7d34958bd347 - Rails 7.0.7 app (using Jumpstart Pro) - Ruby 3.2.2 - App boots fine, but before long the Worker crashes with the following message:

Connection refused - connect(2) for 127.0.0.1:6379
/usr/local/lib/ruby/3.2.0/socket.rb:1217:in `__connect_nonblock'
/usr/local/lib/ruby/3.2.0/socket.rb:1217:in `connect_nonblock'
/usr/local/lib/ruby/3.2.0/socket.rb:60:in `connect_internal'
/usr/local/lib/ruby/3.2.0/socket.rb:141:in `connect'
/usr/local/lib/ruby/3.2.0/socket.rb:645:in `block in tcp'
/usr/local/lib/ruby/3.2.0/socket.rb:231:in `each'
/usr/local/lib/ruby/3.2.0/socket.rb:231:in `foreach'
/usr/local/lib/ruby/3.2.0/socket.rb:635:in `tcp'

Connection refused - connect(2) for 127.0.0.1:6379
/usr/local/lib/ruby/3.2.0/socket.rb:1217:in `__connect_nonblock'
/usr/local/lib/ruby/3.2.0/socket.rb:1217:in `connect_nonblock'
/usr/local/lib/ruby/3.2.0/socket.rb:60:in `connect_internal'
/usr/local/lib/ruby/3.2.0/socket.rb:141:in `connect'
/usr/local/lib/ruby/3.2.0/socket.rb:645:in `block in tcp'
/usr/local/lib/ruby/3.2.0/socket.rb:231:in `each'
/usr/local/lib/ruby/3.2.0/socket.rb:231:in `foreach'
/usr/local/lib/ruby/3.2.0/socket.rb:635:in `tcp'

- I have the REDIS_URL set on the Web service - I imported the repo from Github directly

20 Replies

Percy•10mo ago

Project ID: 2637570f-afaf-462c-887b-912303121dfd,63bb6b2e-042f-443b-a46c-7d34958bd347

Brody•10mo ago

looks like you are trying to connect to a local redis database, if you are wanting to connect to a redis database on railway make sure you have the reference variables setup on your service correctly https://docs.railway.app/develop/variables#reference-variables and make sure you are using those environment variables in code properly

Estafette•10mo ago

I have the REDIS_URL set on the worker but it doesn't seem to be picking it up.

Brody•10mo ago

show me your service variables please

Estafette•10mo ago

On the worker, I'm currrently trying this:

{"REDIS_URL":"${{web.REDIS_URL}}"}

{"REDIS_URL":"${{web.REDIS_URL}}"}

But I also tried redis.REDIS_URL (which was provided by the redis instance I'm running) The web.REDIS_URL is apparently an empty string

Brody•10mo ago

sorry i should have been a little more clear, so can get the best understanding of how you have things configured at the service level, please provide me with a screenshot of your service variables with the redis url variable visible

Estafette•10mo ago

I just re-deployed and tried adding the Postgres database URL - it's green in the screenshot, but it literally just crashed again

Estafette•10mo ago

Brody•10mo ago

your redis reference variable is incorrect, please take a look at this docs section https://docs.railway.app/develop/variables#reference-variables

Estafette•10mo ago

I'll try this one again

Brody•10mo ago

okay now show me the redis service variables please

Estafette•10mo ago

Brody•10mo ago

looks good show me how you are using the REDIS_URL environment variable in code

Estafette•10mo ago

Worker seems stable now

Brody•10mo ago

oh then all good

Estafette•10mo ago

There's a few places where we're using <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %> Thanks for your help @Brody !

Brody•10mo ago

no problem!

danielfriis•7mo ago

@Estafette How did you get a sidekiq worker up and running? It doesn't seem like worker is supported in the procfile

Estafette•7mo ago

I ended up just bailing on it entirely. It would reboot and be stable for a bit, then inevitably crash. My app isn’t using Sidekiq just yet, so I can live without it in the interim

Brody•7mo ago

quick little bit of info here, railway does not support worker processes defined in the Procfile, that is a heroku specific thing. instead you would want to deploy another railway service to run the worker processes, essentially that involves deploying a duplicate service and then setting the start command accordingly in the service settings

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Sidekiq worker repeatedly crashing after deploy with "Connection refused... for 127.0.0.1:6379"