Connect a node.js application to a fly.io rabbit mq server?

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I have a project that I am trying to get connected to a rabbit mq broker that I have set up on fly.io with a node.js API, but I cannot figure out how to do this.

What I have tried:

I tried various ways of re-writing the url for the amqp connection, but none of these worked. Here is my environment variable:

#----Service Dependency Variables----
RABIT_MQ_URL=amqp://rabbit-mq-fly-dep.fly.dev:5672
#----Service Dependency Variables----

I also tried this format:

<pre>#----Service Dependency Variables----
RABIT_MQ_URL=amqp://USERNAME:PASSWORD@rabbit-mq-fly-dep.fly.dev:5672/VHOST_NAME
#----Service Dependency Variables----

however, the error that I got in my node.js app is still the same:

ERR {
  success: false,
  message: Error: getaddrinfo ENOTFOUND rabbit-mq-fly-dep.fly.dev
      at GetAddrInfoReqWrap.onlookupall [as oncomplete] (node:dns:120:26) {
    errno: -3008,
    code: 'ENOTFOUND',
    syscall: 'getaddrinfo',
    hostname: 'rabbit-mq-fly-dep.fly.dev'
  }
}

I have been looking online at other resources, but I can't find anything that could help me. The docs didn't seem to be much help either unless you want to connect to a local host which is easy:

<pre>#----Service Dependency Variables----
RABIT_MQ_URL=amqp://locahost
#----Service Dependency Variables----

This works every time if I run a rabbit MQ instance locally, of course xD

Any help on how to get this working would be much appreciated. Thanks!

Posted 26-Sep-24 4:07am

Baraiboapex

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Pete O'Hanlon · Answer 1 · 2024-09-26T04:21:00

Solution 1

You could always try to connect via the IP address. In your dashboard, use fly ips list to get the valid IP addresses you can use. Also, if you require SSL/TLS, use amqps rather than amqp.

Posted 26-Sep-24 4:21am

Pete O'Hanlon

Comments

Baraiboapex 26-Sep-24 12:37pm

@Pete O'Hanlon Nope, I'm affraid that this didn't work. If it helps any, here is the docker file and toml file for the rabbit mq instance:

docker file:

FROM rabbitmq:3-management-alpine
COPY ./prod.conf /etc/rabbitmq/rabbitmq.conf
RUN rabbitmq-plugins enable rabbitmq_management

fly toml:

# fly.toml app configuration file generated for rabbit-mq-fly-dep on 2024-09-25T14:16:38-04:00
#
# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
#

app = 'rabbit-mq-fly-dep'
primary_region = 'mia'

[build]

[[services]]
  protocol = "tcp"
  internal_port = 5672

  [[services.tcp_checks]]
    interval = "15s"
    timeout = "1m0s"
    grace_period = "1s"

  [[services.ports]]
    port = 5673
    handlers = ["tls"]

[[services]]
  protocol = "tcp"
  internal_port = 15672

  [[services.ports]]
    port = 15672
    handlers = ["tls", "http"]

  [[services.tcp_checks]]
    interval = "15s"
    timeout = "1m0s"
    grace_period = "1s"

Baraiboapex 26-Sep-24 12:38pm

Oh, and the .config file if that helps too:

listeners.tcp.default=5672
default_user=admin
default_pass=admin
management.tcp.ip=::

Baraiboapex 26-Sep-24 12:42pm

I do apologize if this comment is too long for this forum xD. Please let me know and I can send you this information via email or something.

Pete O'Hanlon 27-Sep-24 7:18am

Have you created your fly proxy yet? If not, you won't be able to see this outside the cluster:

fly proxy -a rabbit-mq-fly-dep 15672

Baraiboapex 27-Sep-24 10:35am

Oooooh xD duh! Let me try that!

Baraiboapex 27-Sep-24 11:44am

Hmmm, I tried running the proxy generation on my docker file, but I guess this isn't working. I did run it locally though, but again, this needs to run on an actual server, not my local machine. Here is my current docker file:

FROM rabbitmq:3-management-alpine
FROM flyio/flyctl:latest as flyio

COPY --from=flyio /flyctl /usr/bin
COPY ./prod.conf /etc/rabbitmq/rabbitmq.conf

RUN rabbitmq-plugins enable rabbitmq_management
RUN flyio proxy -a rabbit-mq-fly-dep 15672

Baraiboapex 27-Sep-24 11:45am

I'm new to docker so bear with me xD.