Include OTEL to Elixir releases

elixir/config/runtime.exs

@@ -121,7 +121,10 @@ if config_env() == :prod do
   ###############################
 
   if System.get_env("OTLP_ENDPOINT") do
+    config :opentelemetry, resource_detectors: [:otel_resource_env_var, :otel_resource_app_env]
+
     config :opentelemetry,
+      span_processor: :batch,
       traces_exporter: :otlp
 
     config :opentelemetry_exporter,

elixir/mix.exs

@@ -72,14 +72,18 @@ defmodule Firezone.MixProject do
         include_executables_for: [:unix],
         validate_compile_env: true,
         applications: [
-          web: :permanent
+          web: :permanent,
+          opentelemetry: :temporary,
+          opentelemetry_exporter: :permanent
         ]
       ],
       api: [
         include_executables_for: [:unix],
         validate_compile_env: true,
         applications: [
-          api: :permanent
+          api: :permanent,
+          opentelemetry: :temporary,
+          opentelemetry_exporter: :permanent
         ]
       ]
     ]

terraform/environments/staging/main.tf

@@ -338,11 +338,6 @@ locals {
       name  = "TELEMETRY_ENABLED"
       value = "false"
     },
-    # OpenTelemetry requires an exporter to be set on every node
-    # {
-    #   name  = "OTLP_ENDPOINT"
-    #   value = "http://0.0.0.0:55680",
-    # },
     # Emails
     {
       name  = "OUTBOUND_EMAIL_ADAPTER"

terraform/modules/elixir-app/main.tf

@@ -31,7 +31,11 @@ locals {
     },
     {
       name  = "OTLP_ENDPOINT",
-      value = "127.0.0.1:4318"
+      value = "http://127.0.0.1:4318"
+    },
+    {
+      name  = "OTEL_RESOURCE_ATTRIBUTES"
+      value = "application.name=${local.application_name}"
     }
   ], var.application_environment_variables)