Export envoy metrics for services

services/service/main.tf

@@ -21,6 +21,7 @@ resource "nomad_job" "service" {
     templates    = var.templates
     host_volumes = var.host_volumes
 
+    connect   = anytrue([var.ingress, var.use_mysql, var.use_redis, var.use_ldap, length(var.upstreams) > 0])
     upstreams = var.upstreams
     use_mysql = var.use_mysql
     use_redis = var.use_redis

services/service/service_template.nomad

@@ -15,6 +15,11 @@ job "${name}" {
         to = ${service_port}
       }
       %{ endif }
+      %{ if connect }
+      port "envoy_metrics" {
+        to = 9123
+      }
+      %{~ endif }
     }
 
     %{ if length(group_meta) > 0 }
@@ -42,7 +47,7 @@ job "${name}" {
       name = "${replace(name, "_", "-")}"
       port = "main"
 
-      %{ if anytrue([ingress, use_mysql, use_redis, use_ldap, length(upstreams) > 0])  }
+      %{ if connect }
       connect {
         sidecar_service {
           proxy {
@@ -71,6 +76,10 @@ job "${name}" {
               local_bind_port = ${upstream.local_bind_port}
             }
             %{ endfor }
+
+            config {
+              envoy_prometheus_bind_addr = "0.0.0.0:9123"
+            }
           }
         }
 
@@ -93,13 +102,16 @@ job "${name}" {
         timeout = "10s"
       }
 
-      %{ endif ~}
+      %{~ endif }
-      %{ if metrics_port_name != null ~}
       meta {
+        %{ if metrics_port_name != null }
         metrics_addr = "$${NOMAD_ADDR_${metrics_port_name}}"
+        %{ endif }
+        %{ if connect }
+        envoy_metrics_addr = "$${NOMAD_ADDR_envoy_metrics}"
+        %{~ endif }
       }
 
-      %{ endif ~}
       tags = [
         %{ if ingress }
         "traefik.enable=true",