bundle exec anycable ...)? for context, i've been attempting to load test our current setup in heroku (one anycable dyno running bundle exec anycable --server-command="anycable-go", and one web server just running the normal rails server via puma) and once we hit about 2k connections we start to run into a situation where the actioncable server side of things cannot serve the /cable endpoint quickly enough (the initial requests to /cable don't receive a response). is there something i'm missing since it seems like this should not be remotely anywhere close to load that would cause the rpc server to fail
16 replies
Hi. I have a problem with docker configuration on production enviroment. I based on https://github.com/anycable/anycable_rails_demo/blob/master/docker-compose.yml and same config on my local machine is working but on other i get 2021-04-28T22:40:01.716Z context=ws Websocket session initialization failed: rpc error: code = Unavailable desc = last connection error: connection error: desc = "transport: Error while dialing dial tcp 172.30.0.7:50051: connect: connection refused. 172.30.0.7 is docker container address with rpc. I also checked rpc healt and i get 200, and these are mine enviroments
ANYCABLE_RPC_HOST=rpc:50051
ANYCABLE_HOST=0.0.0.0
ACTION_CABLE_ADAPTER=any_cable
ANYCABLE_DEBUG=1
ANYCABLE_REDIS_URL=redis://redis:6379/1
ANYCABLE_HEADERS=cookie,originand docker-compsose with anycable-go and rpc
anycable:
image: 'anycable/anycable-go:1.0'
restart: always
depends_on:
redis:
condition: service_healthy
ports:
- '90:8080'
env_file:
- .env
rpc:
build: .
command: bash -c "bundle exec anycable"
restart: always
depends_on:
anycable:
condition: service_started
volumes:
- bundle:/bundle
- ${APP_VOLUME}
env_file:
- .env
$ docker run --ulimit nofile=65536:65536 -p 8080:8080 -e "REDIS_URL=redis://docker.for.mac.host.internal:6379/0" -e "ANYCABLE_RPC_HOST=rpc:50051" anycable/anycable-go:latest
I 2021-05-12T10:56:44.061Z context=main Starting AnyCable 1.0.5-2b1cbd6 (pid: 1, open file limit: 65536)
I 2021-05-12T10:56:44.061Z context=main Handle WebSocket connections at http://localhost:8080/cable
I 2021-05-12T10:56:44.062Z context=main Handle health connections at http://localhost:8080/health
I 2021-05-12T10:56:44.063Z context=rpc RPC controller initialized: rpc:50051 (concurrency: 28, proto_versions: v0,v1)
I 2021-05-12T10:56:44.066Z context=pubsub Subscribed to Redis channel: __anycable__$ curl -v http://localhost:8080/health
* Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 8080 (#0)
> GET /health HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.64.1
> Accept: */*
>
* Empty reply from server
* Connection #0 to host localhost left intact
curl: (52) Empty reply from server
* Closing connection 0
We're preparing the v1.1 release; the first candidate is out, please, check it out!
6 replies
How check what's the max limit for a 1CPU 2GB RAM server with the following
Total channels: 13
Total Users: 50
If each user is subscribed to each channel: 50x13= 650 connections
Even if there are approx 50 different streams for each channel to which different or all users are listening (example each 'vote' component is realtime for each message in the chat): 650x50=32500
But I think the information of these streams are maintained in redis (not in memory), am I correct?
How many machines might be needed?
17 replies
Hi all, is there a specific reason why ActionCable.server.config.url is explicitly set on the demo app? https://github.com/anycable/anycable_rails_demo/blob/master/config/environments/development.rb#L6
But in the docs (https://docs.anycable.io/#/v1/rails/getting_started) it doesn't say anything about that. Thanks!
4 replies
Hi! I use the latest anycable version with Rails. In my anycable.yml config file I set redis_url and redis_sentinels but when I call AccountChannel.broadcast_to(...) I get Redis::CommandError (NOAUTH Authentication required.). Here my config:
development:
...
redis_url: 'redis://:my_pass@anycable_master:6379/0'
redis_sentinels: ':my_pass@sentinel_one:26379'What I'm doing wrong?
1 reply
Hi @palkan
Thank you for Anycable
I am struggling in running cable in production mode. Its working fine in development mode but just hangs when I start with RAILS_ENV=production
I upgraded to latest version of anycable-rails but problem is not resolved.
You can add a custom Dip command to enable debugging capabilities: https://github.com/anycable/anycable_rails_demo/blob/c0b8ad885ddbe67209d0bb78cd661ac53ce81cbb/dip.yml#L44-L47
And then you run AnyCable as dip anycable.
Hey! Looks like a reconnection feature of the Action Cable JS client: it assumes that a ping from server is received every 3s; if not it reconnects.
There is no way to change this interval in JS client.
You can try to tune the ping interval at the server side (make it smaller).
also, make sure you're using the latest version of AnyCable-go (at least 1.0.5)
2 replies
Hello Team,
I would like to connect anycable in my Rails application to my Redis cluster hosted on AWS. When I wanted anycable to connect to a single Redis instance, I used the below configuration:
development:
redis_url: <Redis instance URL>
Would it be enough if I just replace the instance URL with the cluster URL? Will anycable have the intelligence to gather the multiple nodes in the cluster and connect to them all?
Hope you all doing well, I just wanna say thank you for your work and contribution to the open-source and ruby community, may God bless you all.
also, I wanna share my experience deploying and using anycable, I had an issue deploying it at heroku (great doc by the way) saying "AnyCable server builder must be configured. Make sure you've required a gem (e.g.
grpc) or configured AnyCable.server_builder yourself" and to resolve it I had to add grpc gem to my gemfile which is not needed in other production deployments and locally .