Fuck it. Environment variable hack.

buildscripts/build/build.sh

@@ -151,6 +151,7 @@ function build_server() {
     
     cp "${build_dir}/.env" $temp_file
     printf "\nNODE_ID=$node_conn\nRELEASE_NODE=chessh@192.168.100.${node_id}\nRELEASE_DISTRIBUTION=name\nRELEASE_COOKIE=chessh\n" >> $temp_file
+    printf "CLUSTER_NODES=$(printf "chessh@192.168.100.%s," ${server_node_ids[@]})\n" >> $temp_file
     scp $ssh_opts $temp_file $node_conn:~/.env
 
     cp "${build_dir}/chessh.service" $temp_file

config/dev.exs

@@ -12,11 +12,3 @@ config :hammer,
       {Hammer.Backend.ETS, [expiry_ms: 60_000 * 60 * 4, cleanup_interval_ms: 60_000 * 10]},
     redis: {Hammer.Backend.ETS, [expiry_ms: 60_000 * 60 * 4, cleanup_interval_ms: 60_000 * 10]}
   ]
-
-config :libcluster,
-  topologies: [
-    chessh_dev: [
-      strategy: Elixir.Cluster.Strategy.ErlangHosts,
-      config: [timeout: 30_000]
-    ]
-  ]

config/prod.exs

@@ -10,20 +10,3 @@ config :chessh, RateLimits,
   max_concurrent_user_sessions: 5,
   player_session_message_burst_ms: 750,
   player_session_message_burst_rate: 8
-
-config :libcluster,
-  topologies: [
-    chessh: [
-      strategy: Elixir.Cluster.Strategy.Gossip,
-      config: [
-        port: 45892,
-        if_addr: "0.0.0.0",
-        multicast_if: "192.168.1.1",
-        multicast_addr: "233.252.255.255",
-        multicast_ttl: 1
-      ]
-    ]
-  ]
-
-config :libcluster,
-  debug: true

config/runtime.exs

@@ -13,6 +13,23 @@ config :chessh, Web,
     System.get_env("SERVER_REDIRECT_URI", "http://127.0.0.1:3000/api/oauth/redirect"),
   port: String.to_integer(System.get_env("WEB_PORT", "8080"))
 
+config :libcluster,
+  topologies: [
+    chessh: [
+      strategy: Cluster.Strategy.Epmd,
+      config: [
+        hosts:
+          String.split(System.get_env("CLUSTER_NODES", ""), ",")
+          |> Enum.filter(fn x -> String.length(x) > 0 end)
+          |> Enum.map(&String.to_atom/1)
+      ],
+      connect: {:net_kernel, :connect, []},
+      disconnect: {:net_kernel, :disconnect, []},
+      list_nodes: {:erlang, :nodes, [:connected]},
+      child_spec: [restart: :transient]
+    ]
+  ]
+
 config :joken,
   default_signer: System.get_env("JWT_SECRET")
 

config/test.exs

@@ -18,14 +18,6 @@ config :hammer,
     redis: {Hammer.Backend.ETS, [expiry_ms: 60_000 * 60 * 4, cleanup_interval_ms: 60_000 * 10]}
   ]
 
-config :libcluster,
-  topologies: [
-    chessh_test: [
-      strategy: Elixir.Cluster.Strategy.Epmd
-    ]
-  ]
-
-
 config :chessh,
   ssh_port: 42_069,
   key_dir: Path.join(Path.dirname(__DIR__), "priv/test_keys")