dimitarvp
As per title, I found this in my supervision tree after generating a Phoenix 1.7 project:
{DNSCluster, query: Application.get_env(:my_app, :dns_cluster_query) || :ignore},
The description on hexdocs – “Simple DNS based cluster discovery.” – does not tell me anything that explains why does a Phoenix project needs it.
Does anybody know?
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LostKobrakai
It’s there to set people up with dns based clustering out of the box, which is a common way of connecting nodes, like on fly.io, but also for things like kubernetes afaik. When disabled is simply does nothing. You can remove it if you don’t need it.
dimitarvp
Yep I’ve noticed that the
:ignoreparameter to it simply prevents it from starting but I still don’t want thedns_clusterin my dependencies.Thanks, I am removing it then.
kokolegorille
There is this video where @chrismccord talks about dns_cluster…
…in the distributed Elixir chapter