ktanev

ktanev

I’m still learning Elixir, Phoenix and Mnesia, so probably it is a newbie question.

What I am trying to achieve is running 3 nodes on different IPs and connect them. I am executing on three terminals
PORT=4001 iex --name n1@127.0.0.1 --cookie secret_cookie -S mix phx.server
PORT=4002 iex --name n2@127.0.0.5 --cookie secret_cookie -S mix phx.server
PORT=4003 iex --name n3@127.0.0.8 --cookie secret_cookie -S mix phx.server.

The problem is that the second and third node do not connect to each other and giving me a warning
[warn] global: :"n2@127.0.0.5" failed to connect to :"n3@127.0.0.8". Running Node.ping returns :pang on both, the second and third one.

I have tried running it on the same IPs and it works, so I suppose there should be something more to do in order for them to connect to each other.

Marked As Solved

hauleth

hauleth

On macOS all other addresses in 127.0.0.0/8 are unbound and you need to manually bound them to the lo0.

Also Liked

benwilson512

benwilson512

Author of Craft GraphQL APIs in Elixir with Absinthe

I’m on OS X so perhaps it’s an OS X thing? Regardless, the OP should make sure that the IPs they’re using are addressable in the general sense. If they are not, that’s probably the issue. If they are, then we know to look elsewhere for a solution to their problem.

benwilson512

benwilson512

Author of Craft GraphQL APIs in Elixir with Absinthe

Unless regular ping 127.0.0.5 works and routes to your local computer, you probably want all of those nodes to be on 127.0.0.1.

Where Next? Top

Trending in Questions Top

katta
I having some trouble figuring out if I have set myself too strict of standards for my production server. Currently I can handle 75% of r...
New
peck
Hi everyone. My team and I have been working on a fairly modest app based around video streaming and chat, but we’ve landed a customer t...
New
achenet
Hello, I’m trying to build a basic Phoenix web-app, and I’d like to use Tailwind. However, when I launch mix phx.server, I get an error...
New
bradley
I really like the adapter patterns that ecto, nebulex, waffle, etc. use and would love find something similar for a key management servic...
New
unaware8150
Hello folks! So at work, we are seeing some situations where we have to define some “fixed” strings that are used across the codebase in...
New
Cxx-mlr
I’m working on a small exercise involving update_in/3, and I came up with this solution: data = %{ name: "Periodic Table", category:...
New
Alvinkariuki
How Can I Optimise Compile Time Dependencies I have been building an elixir application for about 2 years now. Many modules and files ha...
New

Other Trending Topics Top

GenericJam
Edit: 2026 May 15 - This post is archived. Mob is alive!! Main docs: mob v0.7.11 — Documentation A bit of explanation for the slightly c...
New
budgie
A little off-topic, but I feel like people here have a good head on their shoulders. I used to be quite good at making software. Was luc...
New
KristerV
Hey. Is there anyone here who creates agents in their apps? Not talking about using agents, but creating them. I’m finding it pretty diff...
New
mudasobwa
I fully migrated to my own harness from Anthropic/Gemini and I think it’s time to share it. Welcome DSH, the DeepSeek Harness, fully writ...
New
jimsynz
Beam Bots (or just BB for short) is a framework for building fault-tolerant robotics applications in Elixir using familiar OTP patterns. ...
New
juhalehtonen
There has been a thread to discuss the Stack Overflow Developer Survey on this forum every year since 2018, so here’s yet another one for...
New

We're in Beta

About us Mission Statement

Options

Thread Display Mode




Thread Preview

Skip Thread Previews