justinbkay
I currently have an Elixir App running in EC2. It runs on 3 Intel Instances and it is a Phoenix App fwiw.
I’m attempting to add a 4th server which is ARM based and the newer AL2023 distribution. The issue is that the new server cannot connect to the existing cluster. The AWS guy says that all ports are open between the 4 servers, so I need some assistance troubleshooting this problem in case there are networking issues I need to have the admin address.
I’ve run the cluster locally between an Intel Macbook and an ARM based Macbook and the 2 machines were able to cluster just fine, so I don’t think it’s an Architecture issue. I’m not sure how to troubleshoot this beyond trying a Node.ping(:app@server) which yields a :pang response or a Node.connect(:app@server) which yields a false response.
Using telnet, it appears that port 4369 is open between the servers.
Any help is appreciated 
Where Next?
Trending in Questions
Other Trending Topics
Latest on Elixir Forum
Sponsor Spotlight
Deploy Phoenix to your own VPS with PaaS ease: push-to-deploy, zero downtime, auto SSL, managed Postgres. 14-day free trial at potions.io
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
- #ai
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #blog-post
- #ecto-query
- #elixirconf-us
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #elixirconf-eu
- #api
- #forms
- #security
- #hex
Our Sponsors
Build Elixir applications with speed and confidence.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Producing high quality Elixir screencasts since 2017.
**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)
computerfoo
Is the cookie on the new machine set to the same value as on the cluster?
What kind of strategy are you using for libcluster? Epmd?
justinbkay
It was the cookie. I was releasing in two steps, so two cookies were being generated, one for the Intel instances and one for the ARM instance.
Thanks!