Hi all,
After adding libcluster to my phoenix app with two instances, node() returns nonode@nohost and List.node() returns [].
[1] states that Render creates nodes with names like elixir-cluster-demo@10.200.30.4, but I don’t know if I have to do anything to set up that.
The documentation [1] is for phoenix 1.4 and I use 1.6 so something could be missing.
I added libcluster to deps in mix.exs — I tried both 3.1 and the last version 3.3.1:
defp deps do
[ ...,
{:libcluster, "~> 3.1"}
]
Then I added the strategy that [1] recommends — Kubernetes.DNS — to runtime.exs:
dns_name = System.get_env("RENDER_DISCOVERY_SERVICE")
app_name = System.get_env("RENDER_SERVICE_NAME")
config :libcluster,
topologies: [
render: [
strategy: Cluster.Strategy.Kubernetes.DNS,
config: [
service: dns_name,
application_name: app_name
]
]
]
And in application.ex:
def start(_type, _args) do
topologies = Application.get_env(:libcluster, :topologies) || []
children = [
{Cluster.Supervisor, [topologies, [name: MyApp.ClusterSupervisor]]},
...
]
opts = [strategy: :one_for_one, name: MyApp.Supervisor]
Supervisor.start_link(children, opts)
end
Am I missing something? Why node() does return nonode@nohost? Thank you!
