polypush135
I’m trying to stand up a very basic example of distributed elixir using docker and epmd.
I chose to use libcluster and followed the readme with the example of the two nodes a@127.0.0.1 and b@127.0.0.1
Heres the app in github here https://github.com/joshchernoff/cluster_example
In short, everything works besides libcluster.
I can manually connect the nodes via Node.connect and list the nodes by hand but when running libcluster I get
Any ideas?
If I had to guess I would think its related to something running too soon. IE maybe I need to wait to boot the other container first before the other? 
I’m hoping I just overlooked something basic.
Where Next?
Trending in Questions
Other Trending Topics
Latest Phoenix Threads
Latest on Elixir Forum
Sponsor Spotlight
Courses that'll move you from confusion to "Aha, now I get it!"
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #library
- #deployment
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #podcasts
- #javascript
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ai
- #ecto-query
- #elixirconf-us
- #blog-post
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #elixirconf-eu
- #api
- #forms
- #metaprogramming
- #hex
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Master modern tools, write cleaner code, and tackle real-world challenges.
**Building the future of software with AI, trust, and human connection.**
The deployment platform built for Elixir: PaaS ease, VPS control.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Showing Posts 1 to 2- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
polypush135
I was mistaken I can’t
Node.connectby hand after all. I was connecting the node to the same app thus is was saying true, I didn’t notice I was giving the wrong node name to connect to. When trying to use the correct node name I found it would return false thus the prob here is likely epmd is not able to connect because of docker.Exadra37
See this other topic to see if addresses your issue: