Add Libcluster.

lib/cluster_demo/application.ex

@@ -0,0 +1,30 @@
+defmodule ClusterDemo.Application do
+  # See https://hexdocs.pm/elixir/Application.html
+  # for more information on OTP Applications
+  @moduledoc false
+
+  use Application
+
+  def start(_type, _args) do
+    # List all child processes to be supervised
+    children = [
+      # Starts a worker by calling: ClusterDemo.Worker.start_link(arg)
+      # {ClusterDemo.Worker, arg}
+      {Cluster.Supervisor,
+       [
+         [
+           swarm_dns_poll: [
+             strategy: Cluster.Strategy.DNSPoll,
+             config: [query: "tasks.t_cluster_demo", node_basename: "cluster_demo"]
+           ]
+         ]
+       ]
+      }
+    ]
+
+    # See https://hexdocs.pm/elixir/Supervisor.html
+    # for other strategies and supported options
+    opts = [strategy: :one_for_one, name: ClusterDemo.Supervisor]
+    Supervisor.start_link(children, opts)
+  end
+end

mix.exs

@@ -14,14 +14,16 @@ defmodule ClusterDemo.MixProject do
   # Run "mix help compile.app" to learn about applications.
   def application do
     [
-      extra_applications: [:logger]
+      extra_applications: [:logger],
+      mod: {ClusterDemo.Application, []}
     ]
   end
 
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      {:distillery, "~> 2.0"}
+      {:distillery, "~> 2.0"},
+      {:libcluster, "~> 3.1"}
     ]
   end
 end

mix.lock

@@ -1,4 +1,6 @@
 %{
   "artificery": {:hex, :artificery, "0.4.2", "3ded6e29e13113af52811c72f414d1e88f711410cac1b619ab3a2666bbd7efd4", [:mix], [], "hexpm"},
   "distillery": {:hex, :distillery, "2.1.0", "5f31c7771923c12dbb79dcd8d01c5913b07222f134c327e7ab026acdabae985b", [:mix], [{:artificery, "~> 0.2", [hex: :artificery, repo: "hexpm", optional: false]}], "hexpm"},
+  "jason": {:hex, :jason, "1.1.2", "b03dedea67a99223a2eaf9f1264ce37154564de899fd3d8b9a21b1a6fd64afe7", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
+  "libcluster": {:hex, :libcluster, "3.1.0", "461083b6c05ad117fadebb5e8986445d3045dbd1183b20d4865190aeb7873781", [:mix], [{:jason, "~> 1.1.2", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm"},
 }